Parameters of the H|$ _{2}$| O maser features identified by the proper motion toward IRAS 18286|$-$|0959.
| Feature* . | Offset . | Proper motion† . | Radial motion‡ . | Detection at . | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| . | (mas) . | (mas yr|$ ^{-1}$| ) . | (km s|$ ^{-1}$| ) . | individual epochs . | |||||||||||||
| . | |$ \Delta$| RA . | |$ \Delta$| Dec . | |$ \mu_{x}$| . | |$ \sigma \mu_{x}$| . | |$ \mu_{y}$| . | |$ \sigma \mu_{y}$| . | |$ V_{z}$| . | |$ \Delta V_{z}$| § . | 1 . | 2 . | 3 . | 4 . | 5 . | 6 . | 7 . | 8 . | 9 . |
| Maser motions identified in 2007-2008 (9 epochs) . | |||||||||||||||||
| 1 | 7.20 | 83.39 | |$-$| 0.95 | 0.48 | |$-$| 0.68 | 0.35 | |$-$| 42.84 | 2.53 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \circ$| |
| 2 | 9.42 | 75.00 | |$-$| 3.38 | 0.33 | 7.05 | 0.22 | |$-$| 30.99 | 1.19 | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 3 | |$-$| 1.66 | 87.27 | |$-$| 2.17 | 0.33 | 3.76 | 0.43 | |$-$| 25.55 | 1.83 | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 4 | 3.91 | 66.01 | |$-$| 2.92 | 0.14 | 4.02 | 0.17 | |$-$| 14.68 | 1.69 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| |
| 5 | 23.54 | 110.70 | 0.38 | 0.24 | 4.19 | 0.31 | 22.11 | 0.94 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 6 | 22.33 | 112.97 | 0.45 | 0.23 | 4.64 | 0.27 | 25.23 | 2.53 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 7 | 20.18 | 124.11 | 1.58 | 0.40 | 4.19 | 0.55 | 29.46 | 0.77 | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 8 | 21.35 | 115.60 | 0.96 | 0.75 | 3.84 | 0.62 | 32.78 | 1.12 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 9 | 22.26 | 109.60 | 0.19 | 0.48 | 4.22 | 0.64 | 38.72 | 2.95 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 10 | 6.18 | 35.69 | |$-$| 0.75 | 0.22 | 0.14 | 0.23 | 46.69 | 2.11 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| |
| 11 | 12.59 | 27.09 | |$-$| 0.47 | 0.08 | 0.34 | 0.07 | 48.07 | 1.75 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 12 | 45.96 | 34.43 | 1.26 | 0.08 | 0.06 | 0.11 | 51.31 | 1.09 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| |
| 13 | 4.49 | 49.52 | |$-$| 0.68 | 0.35 | 0.52 | 0.40 | 53.00 | 0.63 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 14 | 0.00 | 0.00 | 0.00 | 0.23 | 0.00 | 0.36 | 53.33 | 1.69 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| |
| 15 | 12.64 | 28.14 | 66 |$-$| 1.11 | 0.47 | 0.77 | 0.44 | 56.00 | 0.84 | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 16 | 47.95 | 0.35 | 1.34 | 0.17 | 0.12 | 0.26 | 60.18 | 0.84 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| |
| 17 | 48.45 | |$-$| 0.94 | 1.80 | 0.21 | 0.24 | 0.29 | 62.69 | 1.82 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \times$| |
| 18 | 53.54 | |$-$| 17.53 | 3.53 | 0.31 | |$-$| 4.82 | 0.47 | 67.34 | 1.06 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 19 | 54.81 | |$-$| 11.57 | 2.43 | 0.60 | |$-$| 1.16 | 0.81 | 70.98 | 0.63 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 20 | 44.67 | |$-$| 86.43 | 1.21 | 0.10 | |$-$| 4.51 | 0.14 | 71.11 | 4.47 | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 21 | 41.99 | |$-$| 87.67 | 0.28 | 0.48 | |$-$| 4.38 | 0.54 | 79.20 | 2.95 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| |
| 22 | 51.93 | |$-$| 15.20 | 3.36 | 0.09 | |$-$| 0.61 | 0.13 | 80.25 | 2.11 | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 23 | 53.07 | |$-$| 21.86 | 6.51 | 0.24 | |$-$| 1.41 | 0.20 | 84.80 | 0.28 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| |
| 24 | 55.07 | |$-$| 16.65 | 2.40 | 0.26 | |$-$| 2.21 | 0.22 | 85.88 | 2.95 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| |
| 25 | 41.72 | |$-$| 86.20 | |$-$| 4.91 | 0.55 | 0.40 | 0.49 | 89.71 | 1.54 | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 26 | 55.42 | |$-$| 27.10 | 2.02 | 0.18 | |$-$| 2.18 | 0.12 | 96.92 | 1.85 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| |
| 27 | 53.28 | |$-$| 23.88 | 3.16 | 0.57 | |$-$| 1.89 | 0.46 | 96.94 | 4.00 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 28 | 36.23 | |$-$| 85.48 | 6.83 | 0.19 | |$-$| 2.07 | 0.26 | 99.64 | 0.92 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 29 | 39.85 | |$-$| 87.57 | 2.09 | 0.57 | |$-$| 6.12 | 0.80 | 113.63 | 1.40 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| |
| 30 | 44.25 | |$-$| 86.89 | 0.60 | 0.23 | |$-$| 7.47 | 0.25 | 115.88 | 3.05 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 31 | 60.12 | |$-$| 69.93 | 3.94 | 0.27 | |$-$| 7.25 | 0.42 | 139.65 | 2.63 | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 32 | 59.92 | |$-$| 69.14 | 3.59 | 1.24 | |$-$| 6.36 | 1.12 | 144.29 | 4.21 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| Maser motions identified in 2009 (5 epochs) | |||||||||||||||||
| 33 | 3.69 | 30.62 | 0.13 | 0.13 | 2.74 | 0.15 | |$-$| 48.16 | 3.37 | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | ||||
| 34 | 0.45 | 0.42 | |$-$| 0.34 | 0.33 | |$-$| 2.39 | 0.41 | |$-$| 30.30 | 1.83 | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| | ||||
| 35 | |$-$| 5.78 | 21.67 | |$-$| 5.08 | 0.77 | |$-$| 5.64 | 1.27 | |$-$| 29.06 | 2.11 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | ||||
| 36 | 0.00 | 0.00 | 0.00 | 0.24 | 0.00 | 0.33 | |$-$| 22.84 | 3.67 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | ||||
| 37 | 0.40 | 1.00 | |$-$| 2.50 | 0.39 | |$-$| 0.93 | 0.32 | |$-$| 16.36 | 3.93 | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \circ$| | ||||
| 38 | |$-$| 5.71 | 10.39 | |$-$| 6.21 | 0.70 | |$-$| 7.63 | 1.11 | |$-$| 9.38 | 2.18 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | ||||
| 39 | 12.68 | 53.80 | 1.19 | 0.35 | 0.53 | 0.47 | 7.42 | 2.32 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | ||||
| 40 | 41.29 | |$-$| 27.17 | 1.91 | 0.56 | |$-$| 11.46 | 0.44 | 50.99 | 1.96 | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| | ||||
| 41 | 44.96 | |$-$| 66.61 | 1.19 | 0.33 | 0.42 | 0.38 | 57.01 | 0.84 | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | ||||
| 42 | 0.64 | |$-$| 18.83 | |$-$| 0.89 | 0.29 | |$-$| 4.94 | 0.28 | 66.95 | 0.94 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | ||||
| 43 | 50.84 | |$-$| 82.26 | 5.88 | 0.33 | |$-$| 6.38 | 0.38 | 70.56 | 2.68 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | ||||
| 44 | 34.87 | |$-$| 150.80 | 3.10 | 0.47 | |$-$| 10.59 | 0.51 | 94.26 | 3.93 | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | ||||
| 45 | 38.98 | |$-$| 157.15 | 4.18 | 0.37 | |$-$| 10.30 | 0.42 | 105.74 | 5.20 | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | ||||
| 46 | 34.95 | |$-$| 152.89 | 14.90 | 0.57 | |$-$| 12.15 | 0.58 | 116.29 | 1.55 | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| | ||||
| 47 | 52.36 | |$-$| 175.06 | |$-$| 1.21 | 0.64 | |$-$| 20.59 | 0.90 | 125.55 | 1.82 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | ||||
| 48 | 52.37 | |$-$| 175.07 | |$-$| 1.49 | 1.26 | |$-$| 20.26 | 1.72 | 128.17 | 1.96 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | ||||
| 49 | 52.06 | |$-$| 175.05 | 0.43 | 1.38 | |$-$| 17.51 | 1.22 | 133.98 | 3.51 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | ||||
| 50 | 52.15 | |$-$| 175.06 | 5.19 | 0.26 | |$-$| 14.23 | 0.30 | 135.91 | 3.58 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | ||||
| Feature* . | Offset . | Proper motion† . | Radial motion‡ . | Detection at . | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| . | (mas) . | (mas yr|$ ^{-1}$| ) . | (km s|$ ^{-1}$| ) . | individual epochs . | |||||||||||||
| . | |$ \Delta$| RA . | |$ \Delta$| Dec . | |$ \mu_{x}$| . | |$ \sigma \mu_{x}$| . | |$ \mu_{y}$| . | |$ \sigma \mu_{y}$| . | |$ V_{z}$| . | |$ \Delta V_{z}$| § . | 1 . | 2 . | 3 . | 4 . | 5 . | 6 . | 7 . | 8 . | 9 . |
| Maser motions identified in 2007-2008 (9 epochs) . | |||||||||||||||||
| 1 | 7.20 | 83.39 | |$-$| 0.95 | 0.48 | |$-$| 0.68 | 0.35 | |$-$| 42.84 | 2.53 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \circ$| |
| 2 | 9.42 | 75.00 | |$-$| 3.38 | 0.33 | 7.05 | 0.22 | |$-$| 30.99 | 1.19 | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 3 | |$-$| 1.66 | 87.27 | |$-$| 2.17 | 0.33 | 3.76 | 0.43 | |$-$| 25.55 | 1.83 | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 4 | 3.91 | 66.01 | |$-$| 2.92 | 0.14 | 4.02 | 0.17 | |$-$| 14.68 | 1.69 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| |
| 5 | 23.54 | 110.70 | 0.38 | 0.24 | 4.19 | 0.31 | 22.11 | 0.94 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 6 | 22.33 | 112.97 | 0.45 | 0.23 | 4.64 | 0.27 | 25.23 | 2.53 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 7 | 20.18 | 124.11 | 1.58 | 0.40 | 4.19 | 0.55 | 29.46 | 0.77 | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 8 | 21.35 | 115.60 | 0.96 | 0.75 | 3.84 | 0.62 | 32.78 | 1.12 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 9 | 22.26 | 109.60 | 0.19 | 0.48 | 4.22 | 0.64 | 38.72 | 2.95 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 10 | 6.18 | 35.69 | |$-$| 0.75 | 0.22 | 0.14 | 0.23 | 46.69 | 2.11 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| |
| 11 | 12.59 | 27.09 | |$-$| 0.47 | 0.08 | 0.34 | 0.07 | 48.07 | 1.75 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 12 | 45.96 | 34.43 | 1.26 | 0.08 | 0.06 | 0.11 | 51.31 | 1.09 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| |
| 13 | 4.49 | 49.52 | |$-$| 0.68 | 0.35 | 0.52 | 0.40 | 53.00 | 0.63 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 14 | 0.00 | 0.00 | 0.00 | 0.23 | 0.00 | 0.36 | 53.33 | 1.69 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| |
| 15 | 12.64 | 28.14 | 66 |$-$| 1.11 | 0.47 | 0.77 | 0.44 | 56.00 | 0.84 | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 16 | 47.95 | 0.35 | 1.34 | 0.17 | 0.12 | 0.26 | 60.18 | 0.84 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| |
| 17 | 48.45 | |$-$| 0.94 | 1.80 | 0.21 | 0.24 | 0.29 | 62.69 | 1.82 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \times$| |
| 18 | 53.54 | |$-$| 17.53 | 3.53 | 0.31 | |$-$| 4.82 | 0.47 | 67.34 | 1.06 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 19 | 54.81 | |$-$| 11.57 | 2.43 | 0.60 | |$-$| 1.16 | 0.81 | 70.98 | 0.63 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 20 | 44.67 | |$-$| 86.43 | 1.21 | 0.10 | |$-$| 4.51 | 0.14 | 71.11 | 4.47 | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 21 | 41.99 | |$-$| 87.67 | 0.28 | 0.48 | |$-$| 4.38 | 0.54 | 79.20 | 2.95 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| |
| 22 | 51.93 | |$-$| 15.20 | 3.36 | 0.09 | |$-$| 0.61 | 0.13 | 80.25 | 2.11 | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 23 | 53.07 | |$-$| 21.86 | 6.51 | 0.24 | |$-$| 1.41 | 0.20 | 84.80 | 0.28 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| |
| 24 | 55.07 | |$-$| 16.65 | 2.40 | 0.26 | |$-$| 2.21 | 0.22 | 85.88 | 2.95 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| |
| 25 | 41.72 | |$-$| 86.20 | |$-$| 4.91 | 0.55 | 0.40 | 0.49 | 89.71 | 1.54 | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 26 | 55.42 | |$-$| 27.10 | 2.02 | 0.18 | |$-$| 2.18 | 0.12 | 96.92 | 1.85 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| |
| 27 | 53.28 | |$-$| 23.88 | 3.16 | 0.57 | |$-$| 1.89 | 0.46 | 96.94 | 4.00 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 28 | 36.23 | |$-$| 85.48 | 6.83 | 0.19 | |$-$| 2.07 | 0.26 | 99.64 | 0.92 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 29 | 39.85 | |$-$| 87.57 | 2.09 | 0.57 | |$-$| 6.12 | 0.80 | 113.63 | 1.40 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| |
| 30 | 44.25 | |$-$| 86.89 | 0.60 | 0.23 | |$-$| 7.47 | 0.25 | 115.88 | 3.05 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 31 | 60.12 | |$-$| 69.93 | 3.94 | 0.27 | |$-$| 7.25 | 0.42 | 139.65 | 2.63 | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 32 | 59.92 | |$-$| 69.14 | 3.59 | 1.24 | |$-$| 6.36 | 1.12 | 144.29 | 4.21 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| Maser motions identified in 2009 (5 epochs) | |||||||||||||||||
| 33 | 3.69 | 30.62 | 0.13 | 0.13 | 2.74 | 0.15 | |$-$| 48.16 | 3.37 | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | ||||
| 34 | 0.45 | 0.42 | |$-$| 0.34 | 0.33 | |$-$| 2.39 | 0.41 | |$-$| 30.30 | 1.83 | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| | ||||
| 35 | |$-$| 5.78 | 21.67 | |$-$| 5.08 | 0.77 | |$-$| 5.64 | 1.27 | |$-$| 29.06 | 2.11 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | ||||
| 36 | 0.00 | 0.00 | 0.00 | 0.24 | 0.00 | 0.33 | |$-$| 22.84 | 3.67 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | ||||
| 37 | 0.40 | 1.00 | |$-$| 2.50 | 0.39 | |$-$| 0.93 | 0.32 | |$-$| 16.36 | 3.93 | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \circ$| | ||||
| 38 | |$-$| 5.71 | 10.39 | |$-$| 6.21 | 0.70 | |$-$| 7.63 | 1.11 | |$-$| 9.38 | 2.18 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | ||||
| 39 | 12.68 | 53.80 | 1.19 | 0.35 | 0.53 | 0.47 | 7.42 | 2.32 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | ||||
| 40 | 41.29 | |$-$| 27.17 | 1.91 | 0.56 | |$-$| 11.46 | 0.44 | 50.99 | 1.96 | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| | ||||
| 41 | 44.96 | |$-$| 66.61 | 1.19 | 0.33 | 0.42 | 0.38 | 57.01 | 0.84 | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | ||||
| 42 | 0.64 | |$-$| 18.83 | |$-$| 0.89 | 0.29 | |$-$| 4.94 | 0.28 | 66.95 | 0.94 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | ||||
| 43 | 50.84 | |$-$| 82.26 | 5.88 | 0.33 | |$-$| 6.38 | 0.38 | 70.56 | 2.68 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | ||||
| 44 | 34.87 | |$-$| 150.80 | 3.10 | 0.47 | |$-$| 10.59 | 0.51 | 94.26 | 3.93 | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | ||||
| 45 | 38.98 | |$-$| 157.15 | 4.18 | 0.37 | |$-$| 10.30 | 0.42 | 105.74 | 5.20 | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | ||||
| 46 | 34.95 | |$-$| 152.89 | 14.90 | 0.57 | |$-$| 12.15 | 0.58 | 116.29 | 1.55 | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| | ||||
| 47 | 52.36 | |$-$| 175.06 | |$-$| 1.21 | 0.64 | |$-$| 20.59 | 0.90 | 125.55 | 1.82 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | ||||
| 48 | 52.37 | |$-$| 175.07 | |$-$| 1.49 | 1.26 | |$-$| 20.26 | 1.72 | 128.17 | 1.96 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | ||||
| 49 | 52.06 | |$-$| 175.05 | 0.43 | 1.38 | |$-$| 17.51 | 1.22 | 133.98 | 3.51 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | ||||
| 50 | 52.15 | |$-$| 175.06 | 5.19 | 0.26 | |$-$| 14.23 | 0.30 | 135.91 | 3.58 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | ||||
H|$ _{2}$| O maser features detected toward IRAS 18286|$-$| 0959. The feature is designated as IRAS 18286|$-$| 0959:I2013-N, where N is the ordinal source number given in this column (I2013 stands for sources found by Imai and listed in 2013).
Relative value with respect to the motion of the position-reference maser feature located at the map origin.
Relative value with respect to the local standard of rest.
Mean full velocity width of the maser feature at half intensity.
Parameters of the H|$ _{2}$| O maser features identified by the proper motion toward IRAS 18286|$-$|0959.
| Feature* . | Offset . | Proper motion† . | Radial motion‡ . | Detection at . | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| . | (mas) . | (mas yr|$ ^{-1}$| ) . | (km s|$ ^{-1}$| ) . | individual epochs . | |||||||||||||
| . | |$ \Delta$| RA . | |$ \Delta$| Dec . | |$ \mu_{x}$| . | |$ \sigma \mu_{x}$| . | |$ \mu_{y}$| . | |$ \sigma \mu_{y}$| . | |$ V_{z}$| . | |$ \Delta V_{z}$| § . | 1 . | 2 . | 3 . | 4 . | 5 . | 6 . | 7 . | 8 . | 9 . |
| Maser motions identified in 2007-2008 (9 epochs) . | |||||||||||||||||
| 1 | 7.20 | 83.39 | |$-$| 0.95 | 0.48 | |$-$| 0.68 | 0.35 | |$-$| 42.84 | 2.53 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \circ$| |
| 2 | 9.42 | 75.00 | |$-$| 3.38 | 0.33 | 7.05 | 0.22 | |$-$| 30.99 | 1.19 | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 3 | |$-$| 1.66 | 87.27 | |$-$| 2.17 | 0.33 | 3.76 | 0.43 | |$-$| 25.55 | 1.83 | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 4 | 3.91 | 66.01 | |$-$| 2.92 | 0.14 | 4.02 | 0.17 | |$-$| 14.68 | 1.69 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| |
| 5 | 23.54 | 110.70 | 0.38 | 0.24 | 4.19 | 0.31 | 22.11 | 0.94 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 6 | 22.33 | 112.97 | 0.45 | 0.23 | 4.64 | 0.27 | 25.23 | 2.53 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 7 | 20.18 | 124.11 | 1.58 | 0.40 | 4.19 | 0.55 | 29.46 | 0.77 | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 8 | 21.35 | 115.60 | 0.96 | 0.75 | 3.84 | 0.62 | 32.78 | 1.12 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 9 | 22.26 | 109.60 | 0.19 | 0.48 | 4.22 | 0.64 | 38.72 | 2.95 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 10 | 6.18 | 35.69 | |$-$| 0.75 | 0.22 | 0.14 | 0.23 | 46.69 | 2.11 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| |
| 11 | 12.59 | 27.09 | |$-$| 0.47 | 0.08 | 0.34 | 0.07 | 48.07 | 1.75 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 12 | 45.96 | 34.43 | 1.26 | 0.08 | 0.06 | 0.11 | 51.31 | 1.09 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| |
| 13 | 4.49 | 49.52 | |$-$| 0.68 | 0.35 | 0.52 | 0.40 | 53.00 | 0.63 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 14 | 0.00 | 0.00 | 0.00 | 0.23 | 0.00 | 0.36 | 53.33 | 1.69 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| |
| 15 | 12.64 | 28.14 | 66 |$-$| 1.11 | 0.47 | 0.77 | 0.44 | 56.00 | 0.84 | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 16 | 47.95 | 0.35 | 1.34 | 0.17 | 0.12 | 0.26 | 60.18 | 0.84 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| |
| 17 | 48.45 | |$-$| 0.94 | 1.80 | 0.21 | 0.24 | 0.29 | 62.69 | 1.82 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \times$| |
| 18 | 53.54 | |$-$| 17.53 | 3.53 | 0.31 | |$-$| 4.82 | 0.47 | 67.34 | 1.06 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 19 | 54.81 | |$-$| 11.57 | 2.43 | 0.60 | |$-$| 1.16 | 0.81 | 70.98 | 0.63 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 20 | 44.67 | |$-$| 86.43 | 1.21 | 0.10 | |$-$| 4.51 | 0.14 | 71.11 | 4.47 | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 21 | 41.99 | |$-$| 87.67 | 0.28 | 0.48 | |$-$| 4.38 | 0.54 | 79.20 | 2.95 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| |
| 22 | 51.93 | |$-$| 15.20 | 3.36 | 0.09 | |$-$| 0.61 | 0.13 | 80.25 | 2.11 | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 23 | 53.07 | |$-$| 21.86 | 6.51 | 0.24 | |$-$| 1.41 | 0.20 | 84.80 | 0.28 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| |
| 24 | 55.07 | |$-$| 16.65 | 2.40 | 0.26 | |$-$| 2.21 | 0.22 | 85.88 | 2.95 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| |
| 25 | 41.72 | |$-$| 86.20 | |$-$| 4.91 | 0.55 | 0.40 | 0.49 | 89.71 | 1.54 | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 26 | 55.42 | |$-$| 27.10 | 2.02 | 0.18 | |$-$| 2.18 | 0.12 | 96.92 | 1.85 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| |
| 27 | 53.28 | |$-$| 23.88 | 3.16 | 0.57 | |$-$| 1.89 | 0.46 | 96.94 | 4.00 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 28 | 36.23 | |$-$| 85.48 | 6.83 | 0.19 | |$-$| 2.07 | 0.26 | 99.64 | 0.92 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 29 | 39.85 | |$-$| 87.57 | 2.09 | 0.57 | |$-$| 6.12 | 0.80 | 113.63 | 1.40 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| |
| 30 | 44.25 | |$-$| 86.89 | 0.60 | 0.23 | |$-$| 7.47 | 0.25 | 115.88 | 3.05 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 31 | 60.12 | |$-$| 69.93 | 3.94 | 0.27 | |$-$| 7.25 | 0.42 | 139.65 | 2.63 | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 32 | 59.92 | |$-$| 69.14 | 3.59 | 1.24 | |$-$| 6.36 | 1.12 | 144.29 | 4.21 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| Maser motions identified in 2009 (5 epochs) | |||||||||||||||||
| 33 | 3.69 | 30.62 | 0.13 | 0.13 | 2.74 | 0.15 | |$-$| 48.16 | 3.37 | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | ||||
| 34 | 0.45 | 0.42 | |$-$| 0.34 | 0.33 | |$-$| 2.39 | 0.41 | |$-$| 30.30 | 1.83 | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| | ||||
| 35 | |$-$| 5.78 | 21.67 | |$-$| 5.08 | 0.77 | |$-$| 5.64 | 1.27 | |$-$| 29.06 | 2.11 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | ||||
| 36 | 0.00 | 0.00 | 0.00 | 0.24 | 0.00 | 0.33 | |$-$| 22.84 | 3.67 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | ||||
| 37 | 0.40 | 1.00 | |$-$| 2.50 | 0.39 | |$-$| 0.93 | 0.32 | |$-$| 16.36 | 3.93 | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \circ$| | ||||
| 38 | |$-$| 5.71 | 10.39 | |$-$| 6.21 | 0.70 | |$-$| 7.63 | 1.11 | |$-$| 9.38 | 2.18 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | ||||
| 39 | 12.68 | 53.80 | 1.19 | 0.35 | 0.53 | 0.47 | 7.42 | 2.32 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | ||||
| 40 | 41.29 | |$-$| 27.17 | 1.91 | 0.56 | |$-$| 11.46 | 0.44 | 50.99 | 1.96 | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| | ||||
| 41 | 44.96 | |$-$| 66.61 | 1.19 | 0.33 | 0.42 | 0.38 | 57.01 | 0.84 | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | ||||
| 42 | 0.64 | |$-$| 18.83 | |$-$| 0.89 | 0.29 | |$-$| 4.94 | 0.28 | 66.95 | 0.94 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | ||||
| 43 | 50.84 | |$-$| 82.26 | 5.88 | 0.33 | |$-$| 6.38 | 0.38 | 70.56 | 2.68 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | ||||
| 44 | 34.87 | |$-$| 150.80 | 3.10 | 0.47 | |$-$| 10.59 | 0.51 | 94.26 | 3.93 | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | ||||
| 45 | 38.98 | |$-$| 157.15 | 4.18 | 0.37 | |$-$| 10.30 | 0.42 | 105.74 | 5.20 | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | ||||
| 46 | 34.95 | |$-$| 152.89 | 14.90 | 0.57 | |$-$| 12.15 | 0.58 | 116.29 | 1.55 | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| | ||||
| 47 | 52.36 | |$-$| 175.06 | |$-$| 1.21 | 0.64 | |$-$| 20.59 | 0.90 | 125.55 | 1.82 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | ||||
| 48 | 52.37 | |$-$| 175.07 | |$-$| 1.49 | 1.26 | |$-$| 20.26 | 1.72 | 128.17 | 1.96 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | ||||
| 49 | 52.06 | |$-$| 175.05 | 0.43 | 1.38 | |$-$| 17.51 | 1.22 | 133.98 | 3.51 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | ||||
| 50 | 52.15 | |$-$| 175.06 | 5.19 | 0.26 | |$-$| 14.23 | 0.30 | 135.91 | 3.58 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | ||||
| Feature* . | Offset . | Proper motion† . | Radial motion‡ . | Detection at . | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| . | (mas) . | (mas yr|$ ^{-1}$| ) . | (km s|$ ^{-1}$| ) . | individual epochs . | |||||||||||||
| . | |$ \Delta$| RA . | |$ \Delta$| Dec . | |$ \mu_{x}$| . | |$ \sigma \mu_{x}$| . | |$ \mu_{y}$| . | |$ \sigma \mu_{y}$| . | |$ V_{z}$| . | |$ \Delta V_{z}$| § . | 1 . | 2 . | 3 . | 4 . | 5 . | 6 . | 7 . | 8 . | 9 . |
| Maser motions identified in 2007-2008 (9 epochs) . | |||||||||||||||||
| 1 | 7.20 | 83.39 | |$-$| 0.95 | 0.48 | |$-$| 0.68 | 0.35 | |$-$| 42.84 | 2.53 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \circ$| |
| 2 | 9.42 | 75.00 | |$-$| 3.38 | 0.33 | 7.05 | 0.22 | |$-$| 30.99 | 1.19 | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 3 | |$-$| 1.66 | 87.27 | |$-$| 2.17 | 0.33 | 3.76 | 0.43 | |$-$| 25.55 | 1.83 | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 4 | 3.91 | 66.01 | |$-$| 2.92 | 0.14 | 4.02 | 0.17 | |$-$| 14.68 | 1.69 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| |
| 5 | 23.54 | 110.70 | 0.38 | 0.24 | 4.19 | 0.31 | 22.11 | 0.94 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 6 | 22.33 | 112.97 | 0.45 | 0.23 | 4.64 | 0.27 | 25.23 | 2.53 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 7 | 20.18 | 124.11 | 1.58 | 0.40 | 4.19 | 0.55 | 29.46 | 0.77 | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 8 | 21.35 | 115.60 | 0.96 | 0.75 | 3.84 | 0.62 | 32.78 | 1.12 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 9 | 22.26 | 109.60 | 0.19 | 0.48 | 4.22 | 0.64 | 38.72 | 2.95 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 10 | 6.18 | 35.69 | |$-$| 0.75 | 0.22 | 0.14 | 0.23 | 46.69 | 2.11 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| |
| 11 | 12.59 | 27.09 | |$-$| 0.47 | 0.08 | 0.34 | 0.07 | 48.07 | 1.75 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 12 | 45.96 | 34.43 | 1.26 | 0.08 | 0.06 | 0.11 | 51.31 | 1.09 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| |
| 13 | 4.49 | 49.52 | |$-$| 0.68 | 0.35 | 0.52 | 0.40 | 53.00 | 0.63 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 14 | 0.00 | 0.00 | 0.00 | 0.23 | 0.00 | 0.36 | 53.33 | 1.69 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| |
| 15 | 12.64 | 28.14 | 66 |$-$| 1.11 | 0.47 | 0.77 | 0.44 | 56.00 | 0.84 | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 16 | 47.95 | 0.35 | 1.34 | 0.17 | 0.12 | 0.26 | 60.18 | 0.84 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| |
| 17 | 48.45 | |$-$| 0.94 | 1.80 | 0.21 | 0.24 | 0.29 | 62.69 | 1.82 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \times$| |
| 18 | 53.54 | |$-$| 17.53 | 3.53 | 0.31 | |$-$| 4.82 | 0.47 | 67.34 | 1.06 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 19 | 54.81 | |$-$| 11.57 | 2.43 | 0.60 | |$-$| 1.16 | 0.81 | 70.98 | 0.63 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 20 | 44.67 | |$-$| 86.43 | 1.21 | 0.10 | |$-$| 4.51 | 0.14 | 71.11 | 4.47 | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 21 | 41.99 | |$-$| 87.67 | 0.28 | 0.48 | |$-$| 4.38 | 0.54 | 79.20 | 2.95 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| |
| 22 | 51.93 | |$-$| 15.20 | 3.36 | 0.09 | |$-$| 0.61 | 0.13 | 80.25 | 2.11 | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 23 | 53.07 | |$-$| 21.86 | 6.51 | 0.24 | |$-$| 1.41 | 0.20 | 84.80 | 0.28 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| |
| 24 | 55.07 | |$-$| 16.65 | 2.40 | 0.26 | |$-$| 2.21 | 0.22 | 85.88 | 2.95 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| |
| 25 | 41.72 | |$-$| 86.20 | |$-$| 4.91 | 0.55 | 0.40 | 0.49 | 89.71 | 1.54 | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 26 | 55.42 | |$-$| 27.10 | 2.02 | 0.18 | |$-$| 2.18 | 0.12 | 96.92 | 1.85 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| |
| 27 | 53.28 | |$-$| 23.88 | 3.16 | 0.57 | |$-$| 1.89 | 0.46 | 96.94 | 4.00 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 28 | 36.23 | |$-$| 85.48 | 6.83 | 0.19 | |$-$| 2.07 | 0.26 | 99.64 | 0.92 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 29 | 39.85 | |$-$| 87.57 | 2.09 | 0.57 | |$-$| 6.12 | 0.80 | 113.63 | 1.40 | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| |
| 30 | 44.25 | |$-$| 86.89 | 0.60 | 0.23 | |$-$| 7.47 | 0.25 | 115.88 | 3.05 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 31 | 60.12 | |$-$| 69.93 | 3.94 | 0.27 | |$-$| 7.25 | 0.42 | 139.65 | 2.63 | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| 32 | 59.92 | |$-$| 69.14 | 3.59 | 1.24 | |$-$| 6.36 | 1.12 | 144.29 | 4.21 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| | |$ \times$| |
| Maser motions identified in 2009 (5 epochs) | |||||||||||||||||
| 33 | 3.69 | 30.62 | 0.13 | 0.13 | 2.74 | 0.15 | |$-$| 48.16 | 3.37 | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | ||||
| 34 | 0.45 | 0.42 | |$-$| 0.34 | 0.33 | |$-$| 2.39 | 0.41 | |$-$| 30.30 | 1.83 | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| | ||||
| 35 | |$-$| 5.78 | 21.67 | |$-$| 5.08 | 0.77 | |$-$| 5.64 | 1.27 | |$-$| 29.06 | 2.11 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | ||||
| 36 | 0.00 | 0.00 | 0.00 | 0.24 | 0.00 | 0.33 | |$-$| 22.84 | 3.67 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | ||||
| 37 | 0.40 | 1.00 | |$-$| 2.50 | 0.39 | |$-$| 0.93 | 0.32 | |$-$| 16.36 | 3.93 | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \times$| | |$ \circ$| | ||||
| 38 | |$-$| 5.71 | 10.39 | |$-$| 6.21 | 0.70 | |$-$| 7.63 | 1.11 | |$-$| 9.38 | 2.18 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | ||||
| 39 | 12.68 | 53.80 | 1.19 | 0.35 | 0.53 | 0.47 | 7.42 | 2.32 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | ||||
| 40 | 41.29 | |$-$| 27.17 | 1.91 | 0.56 | |$-$| 11.46 | 0.44 | 50.99 | 1.96 | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| | ||||
| 41 | 44.96 | |$-$| 66.61 | 1.19 | 0.33 | 0.42 | 0.38 | 57.01 | 0.84 | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | ||||
| 42 | 0.64 | |$-$| 18.83 | |$-$| 0.89 | 0.29 | |$-$| 4.94 | 0.28 | 66.95 | 0.94 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | ||||
| 43 | 50.84 | |$-$| 82.26 | 5.88 | 0.33 | |$-$| 6.38 | 0.38 | 70.56 | 2.68 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | ||||
| 44 | 34.87 | |$-$| 150.80 | 3.10 | 0.47 | |$-$| 10.59 | 0.51 | 94.26 | 3.93 | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | ||||
| 45 | 38.98 | |$-$| 157.15 | 4.18 | 0.37 | |$-$| 10.30 | 0.42 | 105.74 | 5.20 | |$ \times$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | ||||
| 46 | 34.95 | |$-$| 152.89 | 14.90 | 0.57 | |$-$| 12.15 | 0.58 | 116.29 | 1.55 | |$ \circ$| | |$ \times$| | |$ \circ$| | |$ \circ$| | |$ \times$| | ||||
| 47 | 52.36 | |$-$| 175.06 | |$-$| 1.21 | 0.64 | |$-$| 20.59 | 0.90 | 125.55 | 1.82 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | ||||
| 48 | 52.37 | |$-$| 175.07 | |$-$| 1.49 | 1.26 | |$-$| 20.26 | 1.72 | 128.17 | 1.96 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | ||||
| 49 | 52.06 | |$-$| 175.05 | 0.43 | 1.38 | |$-$| 17.51 | 1.22 | 133.98 | 3.51 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | |$ \times$| | ||||
| 50 | 52.15 | |$-$| 175.06 | 5.19 | 0.26 | |$-$| 14.23 | 0.30 | 135.91 | 3.58 | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \circ$| | |$ \times$| | ||||
H|$ _{2}$| O maser features detected toward IRAS 18286|$-$| 0959. The feature is designated as IRAS 18286|$-$| 0959:I2013-N, where N is the ordinal source number given in this column (I2013 stands for sources found by Imai and listed in 2013).
Relative value with respect to the motion of the position-reference maser feature located at the map origin.
Relative value with respect to the local standard of rest.
Mean full velocity width of the maser feature at half intensity.
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