Table 3. Open in new tab Magnitudes of...

Table 3.

Magnitudes of Visorsat, STARLINK-1113, and reference stars.

Date	Reference star	Vega magnitude	Vega magnitude	Normalized magnitude*
		(reference star)	(satellite)	(satellite)
Target: Visorsat, telescope/instrument: 105 cm Murikabushi telescope/MITSuME^†
2021 Feb 14	HD 163080	g^′: 10.96	6.51 ± 0.05	6.00 ± 0.06
		R_C: 9.58	6.15 ± 0.04	5.64 ± 0.05
		I_C: 8.91	5.70 ± 0.05	5.20 ± 0.05
	TYC 421-1373-1	g^′: 10.91	6.41 ± 0.05	5.91 ± 0.06
		R_C: 10.06	6.10 ± 0.04	5.59 ± 0.05
		I_C: 9.62	5.73 ± 0.05	5.22 ± 0.06
		Average (g^′):	6.46 ± 0.05	5.96 ± 0.06
		Average (R_C):	6.12 ± 0.04	5.62 ± 0.05
		Average (I_C):	5.72 ± 0.05	5.21 ± 0.06
2021 Feb 15	TYC 1475-739-1	g^′: 10.74	7.61 ± 0.06	7.51 ± 0.06
		R_C: 9.93	6.92 ± 0.03	6.82 ± 0.03
		I_C: 9.43	6.15 ± 0.07	6.05 ± 0.07
	UCAC4 558-053934	g^′: 13.46	7.43 ± 0.17	7.33 ± 0.17
		R_C: 12.11	6.83 ± 0.08	6.74 ± 0.08
		I_C: 11.49	6.20 ± 0.12	6.10 ± 0.12
		Average (g^′):	7.52 ± 0.13	7.42 ± 0.13
		Average (R_C):	6.88 ± 0.06	6.78 ± 0.06
		Average (I_C):	6.18 ± 0.10	6.08 ± 0.10
2021 Mar 14	UCAC4 623-007922	g^′: 11.90	7.77 ± 0.15	6.09 ± 0.15
		R_C: 10.93	7.16 ± 0.04	5.48 ± 0.04
		I_C: 10.40	6.69 ± 0.06	5.01 ± 0.07
	TYC 2332-522-1	g^′: 11.36	7.72 ± 0.09	6.05 ± 0.09
		R_C: 10.77	6.85 ± 0.03	5.17 ± 0.04
		I_C: 10.38	6.53 ± 0.06	4.86 ± 0.07
		Average (g^′):	7.74 ± 0.12	6.07 ± 0.12
		Average (R_C):	7.00 ± 0.03	5.33 ± 0.04
		Average (I_C):	6.61 ± 0.06	4.94 ± 0.07
Target: STARLINK-1113, telescope/instrument: 105 cm Murikabushi telescope/MITSuME^†
2021 Feb 5	UCAC4 370-003115	g^′: 12.76	5.77 ± 0.11	5.00 ± 0.11
		R_C: 12.01	5.23 ± 0.04	4.47 ± 0.05
		I_C: 11.60	4.82 ± 0.09	4.06 ± 0.10
	UCAC4 370-003114	g^′: 13.91	6.00 ± 0.20	5.24 ± 0.21
		R_C: 13.07	5.09 ± 0.09	4.33 ± 0.10
		I_C: 12.59	4.78 ± 0.13	4.02 ± 0.13
		Average (g^′):	5.89 ± 0.17	5.12 ± 0.17
		Average (R_C):	5.16 ± 0.07	4.40 ± 0.08
		Average (I_C):	4.80 ± 0.11	4.04 ± 0.12
Target: Visorsat, telescope/instrument: Akeno 50 cm/MITSuME^†
2021 Nov 11	BD −20 6624	g^′: 11.22	6.89 ± 0.09	5.61 ± 0.09
		R_C: 10.69	5.79 ± 0.05	4.51 ± 0.05
		I_C: 10.37	5.21 ± 0.12	3.93 ± 0.12
	BD −20 6621	g^′: 11.14	6.83 ± 0.11	5.55 ± 0.11
		R_C: 10.67	5.71 ± 0.06	4.43 ± 0.06
		I_C: 10.33	5.05 ± 0.14	3.77 ± 0.14
		Average (g^′)	6.86 ± 0.10	5.58 ± 0.10
		Average (R_C)	5.75 ± 0.06	4.46 ± 0.06
		Average (I_C)	5.13 ± 0.13	3.85 ± 0.12
Target: Visorsat, telescope/instrument: Akeno 50 cm/MITSuME^†
2022 Jan 17	UCAC4 399-000139	g^′: 12.73	7.69 ± 0.34	6.61 ± 0.34
		R_C: 12.16	7.35 ± 0.15	6.27 ± 0.15
		I_C: 11.80	6.96 ± 0.28	5.88 ± 0.28
	UCAC4 399-000135	g^′: 12.38	7.70 ± 0.19	6.61 ± 0.19
		R_C: 11.89	7.34 ± 0.13	6.25 ± 0.14
		I_C: 11.72	6.94 ± 0.21	5.86 ± 0.21
		Average (g^′)	7.69 ± 0.28	6.61 ± 0.28
		Average (R_C)	7.35 ± 0.14	6.26 ± 0.15
		Average (I_C)	6.95 ± 0.24	5.87 ± 0.25
Target: STARLINK-1113, telescope/instrument: Akeno 50 cm/MITSuME^†
2021 Mar 17	BD −02 4622	g^′: 11.66	6.93 ± 0.08	6.28 ± 0.08
		R_C: 10.65	6.02 ± 0.04	5.37 ± 0.04
		I_C: 9.97	5.41 ± 0.09	4.77 ± 0.09
	BD −02 4617	g^′: 11.28	6.86 ± 0.07	6.21 ± 0.08
		R_C: 10.58	6.01 ± 0.06	5.37 ± 0.06
		I_C: 10.11	5.43 ± 0.12	4.78 ± 0.12
		Average (g^′)	6.90 ± 0.08	6.25 ± 0.08
		Average (R_C)	6.02 ± 0.05	5.37 ± 0.05
		Average (I_C)	5.42 ± 0.11	4.77 ± 0.10
2021 Mar 18	IRAS 17251+1347	g^′: 11.52	6.01 ± 0.10	5.83 ± 0.10
		R_C: 9.45	4.95 ± 0.02	4.78 ± 0.02
		I_C: 7.72	4.45 ± 0.04	4.27 ± 0.04
	BD +13 3376	g^′: 10.00	5.87 ± 0.04	5.70 ± 0.04
		R_C: 9.45	5.10 ± 0.03	4.93 ± 0.03
		I_C: 8.95	4.59 ± 0.04	4.41 ± 0.04
		Average (g^′)	5.94 ± 0.08	5.77 ± 0.08
		Average (R_C)	5.03 ± 0.02	4.85 ± 0.03
		Average (I_C)	4.52 ± 0.04	4.34 ± 0.04
2021 Mar 22	TYC 4151-615-1	g^′: 10.57	6.23 ± 0.01	5.06 ± 0.02
		R_C: 9.91	5.15 ± 0.01	3.97 ± 0.01
		I_C: 9.56	4.64 ± 0.04	3.49 ± 0.04
	TYC 4151-677-1	g^′: 11.71	6.21 ± 0.03	5.03 ± 0.03
		R_C: 10.80	5.15 ± 0.02	3.98 ± 0.02
		I_C: 10.31	4.61 ± 0.09	3.44 ± 0.09
		Average (g^′)	6.22 ± 0.03	5.05 ± 0.03
		Average (R_C)	5.15 ± 0.02	3.98 ± 0.02
		Average (I_C)	4.63 ± 0.07	3.45 ± 0.07
Median magnitude of Visorsat and STARLINK-1113 in g^′, R_C, and I_C bands
		Visorsat (g^′)	7.52 ± 0.10	6.07 ± 0.10
		Visorsat (R_C)	6.84 ± 0.04	5.61 ± 0.05
		Visorsat (I_C)	6.18 ± 0.09	5.21 ± 0.09
		STARLINK-1113 (g^′)	6.11 ± 0.07	5.47 ± 0.08
		STARLINK-1113 (R_C)	5.15 ± 0.03	4.63 ± 0.04
		STARLINK-1113 (I_C)	4.71 ± 0.09	4.17 ± 0.09
Target: Visorsat, telescope/instrument: Kanata/HONIR^†
2021 Mar 15	TYC 4805-96-1	V: 10.64	7.06 ± 0.12	6.61 ± 0.13
		H: 9.86	4.66 ± 0.06	4.21 ± 0.07
	HD 295837	V: 11.15	7.06 ± 0.12	6.61 ± 0.12
		H: 10.65	4.56 ± 0.10	4.10 ± 0.10
		Average (V)	7.06 ± 0.12	6.61 ± 0.12
		Average (H)	4.61 ± 0.08	4.15 ± 0.09
2022 Jan 17	TYC 5853-116-1	V: 11.76	7.86 ± 0.16	6.82 ± 0.20
		H: 10.40	6.40 ± 0.10	5.27 ± 0.10
	UCAC4 350-001273	V: 11.01	7.95 ± 0.15	6.91 ± 0.20
	2MASS 01080945−2008310	H: 12.22	6.25 ± 0.41	5.12 ± 0.41
		Average (V)	7.90 ± 0.16	6.86 ± 0.20
		Average (H)	6.32 ± 0.30	5.20 ± 0.30
2022 Jan 19	UCAC4 529-148682	B: 12.82	7.10 ± 0.31	6.60 ± 0.34
		H: 9.56	4.94 ± 0.08	4.35 ± 0.09
	UCAC4 529-148667	B: 13.91	7.44 ± 0.57	6.94 ± 0.58
		H: 10.58	4.78 ± 0.10	4.20 ± 0.11
		Average (B)	7.27 ± 0.46	6.77 ± 0.48
		Average (H)	4.86 ± 0.09	4.27 ± 0.10
Target: STARLINK-1113, telescope/instrument: Kanata/HONIR^†
2021 Mar 19	BD +29 3349	V: 10.06	5.46 ± 0.09	5.16 ± 0.12
		H: 7.97	3.78 ± 0.03	3.48 ± 0.09
	TYC 2120-535-1	V: 11.86	5.64 ± 0.12	5.34 ± 0.15
		H: 10.09	3.93 ± 0.07	3.63 ± 0.11
		Average (V)	5.56 ± 0.11	5.25 ± 0.13
		Average (H)	3.85 ± 0.05	3.55 ± 0.10
2021 Mar 22	TYC 4619-103-1	V: 10.49	6.56 ± 0.09	5.32 ± 0.10
	TYC 4619-147-1	V: 11.23	6.60 ± 0.09	5.37 ± 0.10
		Average (V)	6.58 ± 0.09	5.34 ± 0.10
2022 Jan 24	BD +42 4606	B: 11.15	7.10 ± 0.13	6.27 ± 0.19
		H: 5.97	4.35 ± 0.04	3.42 ± 0.06
	TYC 3229-1917-1	B: 12.62	6.78 ± 0.40	5.95 ± 0.43
		H: 10.75	4.36 ± 0.09	3.43 ± 0.10
		Average (B)	6.94 ± 0.30	6.11 ± 0.33
		Average (H)	4.35 ± 0.07	3.43 ± 0.08
Median magnitude of Visorsat and STARLINK-1113 in V and H bands
		Visorsat (V)	7.46 ± 0.14	6.72 ± 0.16
		Visorsat (H)	4.86 ± 0.10	4.28 ± 0.10
		STARLINK-1113 (V)	6.10 ± 0.09	5.33 ± 0.11
		STARLINK-1113 (H)	4.14 ± 0.06	3.45 ± 0.09
Target: Visorsat, telescope/instrument: Nayuta/NIC^‡
2021 Feb 15	UCAC4 471-058903	J: 11.31	4.50 ± 0.24	3.80 ± 0.24
		H: 10.71	4.08 ± 0.05	3.38 ± 0.06
		K_s: 10.41	4.36 ± 0.10	3.65 ± 0.11
Target: STARLINK-1113, telescope/instrument: Nayuta/NIC^‡
2021 Nov 2	UCAC4 462-062055	J: 11.45	5.16 ± 0.08	3.88 ± 0.09
		H: 10.89	4.80 ± 0.04	3.52 ± 0.05
		K_s: 10.80	4.84 ± 0.07	3.56 ± 0.07
	UCAC4 462-062051	J: 10.55	4.80 ± 0.06	3.52 ± 0.07
		H: 9.78	4.70 ± 0.03	3.42 ± 0.04
		K_s: 9.60	4.81 ± 0.07	3.53 ± 0.07
		Average (J)	4.98 ± 0.07	3.70 ± 0.08
		Average (H)	4.75 ± 0.03	3.47 ± 0.05
		Average (K_s)	4.83 ± 0.07	3.55 ± 0.07
Target: Visorsat, telescope/instrument: 0.55 m SaCRA telescope/MuSaSHI^‡
2021 Mar 11	BD +61 273	r: 9.60	8.18 ± 0.07	7.03 ± 0.08
		i: 9.39	7.79 ± 0.05	6.64 ± 0.06
		\|$z$\|⁠: 9.28	7.47 ± 0.08	6.32 ± 0.09
	TYC 4031-453-1	r: 10.22	8.07 ± 0.07	6.91 ± 0.08
		i: 10.30	7.80 ± 0.05	6.65 ± 0.06
		\|$z$\|⁠: 10.35	7.59 ± 0.08	6.44 ± 0.09
		Average (r)	8.12 ± 0.07	6.97 ± 0.08
		Average (i)	7.80 ± 0.05	6.64 ± 0.06
		Average (⁠\|$z$\|⁠)	7.53 ± 0.08	6.38 ± 0.09
2021 Mar 15	TYC 5316-793-1	r: 11.27	7.87 ± 0.04	6.56 ± 0.04
		i: 11.08	7.63 ± 0.06	6.32 ± 0.06
		\|$z$\|⁠: 10.98	7.57 ± 0.11	6.26 ± 0.11
	TYC 5316-685-1	r: 11.71	7.87 ± 0.04	6.56 ± 0.04
		i: 11.53	7.55 ± 0.06	6.24 ± 0.06
		\|$z$\|⁠: 11.44	7.54 ± 0.11	6.23 ± 0.11
		Average (r)	7.87 ± 0.04	6.56 ± 0.04
		Average (i)	7.59 ± 0.06	6.28 ± 0.06
		Average (⁠\|$z$\|⁠)	7.55 ± 0.11	6.24 ± 0.11
2021 Nov 15	HD 348402	r: 9.58	5.64 ± 0.02	4.89 ± 0.02
		i: 9.27	5.50 ± 0.02	4.75 ± 0.02
		\|$z$\|⁠: 9.10	5.39 ± 0.02	4.64 ± 0.02
	HD 348403	r: 10.10	5.66 ± 0.02	4.91 ± 0.02
		i: 9.74	5.52 ± 0.02	4.77 ± 0.02
		\|$z$\|⁠: 9.55	5.41 ± 0.02	4.66 ± 0.02
		Average (r)	5.65 ± 0.02	4.90 ± 0.02
		Average (i)	5.51 ± 0.02	4.76 ± 0.02
		Average (⁠\|$z$\|⁠)	5.40 ± 0.02	4.65 ± 0.02
2021 Nov 17	TYC 3492-1641-1	r: 10.56	7.51 ± 0.12	6.31 ± 0.12
		i: 10.47	7.28 ± 0.12	6.08 ± 0.12
		\|$z$\|⁠: 10.42	7.09 ± 0.08	5.89 ± 0.08
	UCAC4 678-059331	r: 12.74	7.53 ± 0.13	6.33 ± 0.13
		i: 12.61	7.35 ± 0.12	6.14 ± 0.12
		\|$z$\|⁠: 12.54	7.16 ± 0.08	5.96 ± 0.08
		Average (r)	7.52 ± 0.12	6.32 ± 0.12
		Average (i)	7.31 ± 0.12	6.11 ± 0.12
		Average (⁠\|$z$\|⁠)	7.13 ± 0.08	5.92 ± 0.08
Median magnitude of Visorsat in r, i, and \|$z$\| bands
		Visorsat (r)	7.70 ± 0.06	6.44 ± 0.06
		Visorsat (i)	7.44 ± 0.06	6.19 ± 0.06
		Visorsat (⁠\|$z$\|⁠)	7.31 ± 0.08	6.09 ± 0.09
Target: STARLINK-1113, telescope/instrument: 0.55 m SaCRA telescope/MuSaSHI^‡
2022 Jan 26	BD +15 1039	r: 10.00	5.18 ± 0.02	4.25 ± 0.03
		i: 9.61	4.71 ± 0.02	3.78 ± 0.03
		\|$z$\|⁠: 9.39	4.47 ± 0.02	3.54 ± 0.02
	TYC 1313-716-1	r: 10.03	5.19 ± 0.02	4.26 ± 0.03
		i: 9.68	4.73 ± 0.02	3.80 ± 0.03
		\|$z$\|⁠: 9.49	4.52 ± 0.02	3.59 ± 0.02
		Average (r)	5.19 ± 0.02	4.26 ± 0.03
		Average (i)	4.72 ± 0.02	3.79 ± 0.03
		Average (⁠\|$z$\|⁠)	4.50 ± 0.02	3.57 ± 0.02

Date	Reference star	Vega magnitude	Vega magnitude	Normalized magnitude*
		(reference star)	(satellite)	(satellite)
Target: Visorsat, telescope/instrument: 105 cm Murikabushi telescope/MITSuME^†
2021 Feb 14	HD 163080	g^′: 10.96	6.51 ± 0.05	6.00 ± 0.06
		R_C: 9.58	6.15 ± 0.04	5.64 ± 0.05
		I_C: 8.91	5.70 ± 0.05	5.20 ± 0.05
	TYC 421-1373-1	g^′: 10.91	6.41 ± 0.05	5.91 ± 0.06
		R_C: 10.06	6.10 ± 0.04	5.59 ± 0.05
		I_C: 9.62	5.73 ± 0.05	5.22 ± 0.06
		Average (g^′):	6.46 ± 0.05	5.96 ± 0.06
		Average (R_C):	6.12 ± 0.04	5.62 ± 0.05
		Average (I_C):	5.72 ± 0.05	5.21 ± 0.06
2021 Feb 15	TYC 1475-739-1	g^′: 10.74	7.61 ± 0.06	7.51 ± 0.06
		R_C: 9.93	6.92 ± 0.03	6.82 ± 0.03
		I_C: 9.43	6.15 ± 0.07	6.05 ± 0.07
	UCAC4 558-053934	g^′: 13.46	7.43 ± 0.17	7.33 ± 0.17
		R_C: 12.11	6.83 ± 0.08	6.74 ± 0.08
		I_C: 11.49	6.20 ± 0.12	6.10 ± 0.12
		Average (g^′):	7.52 ± 0.13	7.42 ± 0.13
		Average (R_C):	6.88 ± 0.06	6.78 ± 0.06
		Average (I_C):	6.18 ± 0.10	6.08 ± 0.10
2021 Mar 14	UCAC4 623-007922	g^′: 11.90	7.77 ± 0.15	6.09 ± 0.15
		R_C: 10.93	7.16 ± 0.04	5.48 ± 0.04
		I_C: 10.40	6.69 ± 0.06	5.01 ± 0.07
	TYC 2332-522-1	g^′: 11.36	7.72 ± 0.09	6.05 ± 0.09
		R_C: 10.77	6.85 ± 0.03	5.17 ± 0.04
		I_C: 10.38	6.53 ± 0.06	4.86 ± 0.07
		Average (g^′):	7.74 ± 0.12	6.07 ± 0.12
		Average (R_C):	7.00 ± 0.03	5.33 ± 0.04
		Average (I_C):	6.61 ± 0.06	4.94 ± 0.07
Target: STARLINK-1113, telescope/instrument: 105 cm Murikabushi telescope/MITSuME^†
2021 Feb 5	UCAC4 370-003115	g^′: 12.76	5.77 ± 0.11	5.00 ± 0.11
		R_C: 12.01	5.23 ± 0.04	4.47 ± 0.05
		I_C: 11.60	4.82 ± 0.09	4.06 ± 0.10
	UCAC4 370-003114	g^′: 13.91	6.00 ± 0.20	5.24 ± 0.21
		R_C: 13.07	5.09 ± 0.09	4.33 ± 0.10
		I_C: 12.59	4.78 ± 0.13	4.02 ± 0.13
		Average (g^′):	5.89 ± 0.17	5.12 ± 0.17
		Average (R_C):	5.16 ± 0.07	4.40 ± 0.08
		Average (I_C):	4.80 ± 0.11	4.04 ± 0.12
Target: Visorsat, telescope/instrument: Akeno 50 cm/MITSuME^†
2021 Nov 11	BD −20 6624	g^′: 11.22	6.89 ± 0.09	5.61 ± 0.09
		R_C: 10.69	5.79 ± 0.05	4.51 ± 0.05
		I_C: 10.37	5.21 ± 0.12	3.93 ± 0.12
	BD −20 6621	g^′: 11.14	6.83 ± 0.11	5.55 ± 0.11
		R_C: 10.67	5.71 ± 0.06	4.43 ± 0.06
		I_C: 10.33	5.05 ± 0.14	3.77 ± 0.14
		Average (g^′)	6.86 ± 0.10	5.58 ± 0.10
		Average (R_C)	5.75 ± 0.06	4.46 ± 0.06
		Average (I_C)	5.13 ± 0.13	3.85 ± 0.12
Target: Visorsat, telescope/instrument: Akeno 50 cm/MITSuME^†
2022 Jan 17	UCAC4 399-000139	g^′: 12.73	7.69 ± 0.34	6.61 ± 0.34
		R_C: 12.16	7.35 ± 0.15	6.27 ± 0.15
		I_C: 11.80	6.96 ± 0.28	5.88 ± 0.28
	UCAC4 399-000135	g^′: 12.38	7.70 ± 0.19	6.61 ± 0.19
		R_C: 11.89	7.34 ± 0.13	6.25 ± 0.14
		I_C: 11.72	6.94 ± 0.21	5.86 ± 0.21
		Average (g^′)	7.69 ± 0.28	6.61 ± 0.28
		Average (R_C)	7.35 ± 0.14	6.26 ± 0.15
		Average (I_C)	6.95 ± 0.24	5.87 ± 0.25
Target: STARLINK-1113, telescope/instrument: Akeno 50 cm/MITSuME^†
2021 Mar 17	BD −02 4622	g^′: 11.66	6.93 ± 0.08	6.28 ± 0.08
		R_C: 10.65	6.02 ± 0.04	5.37 ± 0.04
		I_C: 9.97	5.41 ± 0.09	4.77 ± 0.09
	BD −02 4617	g^′: 11.28	6.86 ± 0.07	6.21 ± 0.08
		R_C: 10.58	6.01 ± 0.06	5.37 ± 0.06
		I_C: 10.11	5.43 ± 0.12	4.78 ± 0.12
		Average (g^′)	6.90 ± 0.08	6.25 ± 0.08
		Average (R_C)	6.02 ± 0.05	5.37 ± 0.05
		Average (I_C)	5.42 ± 0.11	4.77 ± 0.10
2021 Mar 18	IRAS 17251+1347	g^′: 11.52	6.01 ± 0.10	5.83 ± 0.10
		R_C: 9.45	4.95 ± 0.02	4.78 ± 0.02
		I_C: 7.72	4.45 ± 0.04	4.27 ± 0.04
	BD +13 3376	g^′: 10.00	5.87 ± 0.04	5.70 ± 0.04
		R_C: 9.45	5.10 ± 0.03	4.93 ± 0.03
		I_C: 8.95	4.59 ± 0.04	4.41 ± 0.04
		Average (g^′)	5.94 ± 0.08	5.77 ± 0.08
		Average (R_C)	5.03 ± 0.02	4.85 ± 0.03
		Average (I_C)	4.52 ± 0.04	4.34 ± 0.04
2021 Mar 22	TYC 4151-615-1	g^′: 10.57	6.23 ± 0.01	5.06 ± 0.02
		R_C: 9.91	5.15 ± 0.01	3.97 ± 0.01
		I_C: 9.56	4.64 ± 0.04	3.49 ± 0.04
	TYC 4151-677-1	g^′: 11.71	6.21 ± 0.03	5.03 ± 0.03
		R_C: 10.80	5.15 ± 0.02	3.98 ± 0.02
		I_C: 10.31	4.61 ± 0.09	3.44 ± 0.09
		Average (g^′)	6.22 ± 0.03	5.05 ± 0.03
		Average (R_C)	5.15 ± 0.02	3.98 ± 0.02
		Average (I_C)	4.63 ± 0.07	3.45 ± 0.07
Median magnitude of Visorsat and STARLINK-1113 in g^′, R_C, and I_C bands
		Visorsat (g^′)	7.52 ± 0.10	6.07 ± 0.10
		Visorsat (R_C)	6.84 ± 0.04	5.61 ± 0.05
		Visorsat (I_C)	6.18 ± 0.09	5.21 ± 0.09
		STARLINK-1113 (g^′)	6.11 ± 0.07	5.47 ± 0.08
		STARLINK-1113 (R_C)	5.15 ± 0.03	4.63 ± 0.04
		STARLINK-1113 (I_C)	4.71 ± 0.09	4.17 ± 0.09
Target: Visorsat, telescope/instrument: Kanata/HONIR^†
2021 Mar 15	TYC 4805-96-1	V: 10.64	7.06 ± 0.12	6.61 ± 0.13
		H: 9.86	4.66 ± 0.06	4.21 ± 0.07
	HD 295837	V: 11.15	7.06 ± 0.12	6.61 ± 0.12
		H: 10.65	4.56 ± 0.10	4.10 ± 0.10
		Average (V)	7.06 ± 0.12	6.61 ± 0.12
		Average (H)	4.61 ± 0.08	4.15 ± 0.09
2022 Jan 17	TYC 5853-116-1	V: 11.76	7.86 ± 0.16	6.82 ± 0.20
		H: 10.40	6.40 ± 0.10	5.27 ± 0.10
	UCAC4 350-001273	V: 11.01	7.95 ± 0.15	6.91 ± 0.20
	2MASS 01080945−2008310	H: 12.22	6.25 ± 0.41	5.12 ± 0.41
		Average (V)	7.90 ± 0.16	6.86 ± 0.20
		Average (H)	6.32 ± 0.30	5.20 ± 0.30
2022 Jan 19	UCAC4 529-148682	B: 12.82	7.10 ± 0.31	6.60 ± 0.34
		H: 9.56	4.94 ± 0.08	4.35 ± 0.09
	UCAC4 529-148667	B: 13.91	7.44 ± 0.57	6.94 ± 0.58
		H: 10.58	4.78 ± 0.10	4.20 ± 0.11
		Average (B)	7.27 ± 0.46	6.77 ± 0.48
		Average (H)	4.86 ± 0.09	4.27 ± 0.10
Target: STARLINK-1113, telescope/instrument: Kanata/HONIR^†
2021 Mar 19	BD +29 3349	V: 10.06	5.46 ± 0.09	5.16 ± 0.12
		H: 7.97	3.78 ± 0.03	3.48 ± 0.09
	TYC 2120-535-1	V: 11.86	5.64 ± 0.12	5.34 ± 0.15
		H: 10.09	3.93 ± 0.07	3.63 ± 0.11
		Average (V)	5.56 ± 0.11	5.25 ± 0.13
		Average (H)	3.85 ± 0.05	3.55 ± 0.10
2021 Mar 22	TYC 4619-103-1	V: 10.49	6.56 ± 0.09	5.32 ± 0.10
	TYC 4619-147-1	V: 11.23	6.60 ± 0.09	5.37 ± 0.10
		Average (V)	6.58 ± 0.09	5.34 ± 0.10
2022 Jan 24	BD +42 4606	B: 11.15	7.10 ± 0.13	6.27 ± 0.19
		H: 5.97	4.35 ± 0.04	3.42 ± 0.06
	TYC 3229-1917-1	B: 12.62	6.78 ± 0.40	5.95 ± 0.43
		H: 10.75	4.36 ± 0.09	3.43 ± 0.10
		Average (B)	6.94 ± 0.30	6.11 ± 0.33
		Average (H)	4.35 ± 0.07	3.43 ± 0.08
Median magnitude of Visorsat and STARLINK-1113 in V and H bands
		Visorsat (V)	7.46 ± 0.14	6.72 ± 0.16
		Visorsat (H)	4.86 ± 0.10	4.28 ± 0.10
		STARLINK-1113 (V)	6.10 ± 0.09	5.33 ± 0.11
		STARLINK-1113 (H)	4.14 ± 0.06	3.45 ± 0.09
Target: Visorsat, telescope/instrument: Nayuta/NIC^‡
2021 Feb 15	UCAC4 471-058903	J: 11.31	4.50 ± 0.24	3.80 ± 0.24
		H: 10.71	4.08 ± 0.05	3.38 ± 0.06
		K_s: 10.41	4.36 ± 0.10	3.65 ± 0.11
Target: STARLINK-1113, telescope/instrument: Nayuta/NIC^‡
2021 Nov 2	UCAC4 462-062055	J: 11.45	5.16 ± 0.08	3.88 ± 0.09
		H: 10.89	4.80 ± 0.04	3.52 ± 0.05
		K_s: 10.80	4.84 ± 0.07	3.56 ± 0.07
	UCAC4 462-062051	J: 10.55	4.80 ± 0.06	3.52 ± 0.07
		H: 9.78	4.70 ± 0.03	3.42 ± 0.04
		K_s: 9.60	4.81 ± 0.07	3.53 ± 0.07
		Average (J)	4.98 ± 0.07	3.70 ± 0.08
		Average (H)	4.75 ± 0.03	3.47 ± 0.05
		Average (K_s)	4.83 ± 0.07	3.55 ± 0.07
Target: Visorsat, telescope/instrument: 0.55 m SaCRA telescope/MuSaSHI^‡
2021 Mar 11	BD +61 273	r: 9.60	8.18 ± 0.07	7.03 ± 0.08
		i: 9.39	7.79 ± 0.05	6.64 ± 0.06
		\|$z$\|⁠: 9.28	7.47 ± 0.08	6.32 ± 0.09
	TYC 4031-453-1	r: 10.22	8.07 ± 0.07	6.91 ± 0.08
		i: 10.30	7.80 ± 0.05	6.65 ± 0.06
		\|$z$\|⁠: 10.35	7.59 ± 0.08	6.44 ± 0.09
		Average (r)	8.12 ± 0.07	6.97 ± 0.08
		Average (i)	7.80 ± 0.05	6.64 ± 0.06
		Average (⁠\|$z$\|⁠)	7.53 ± 0.08	6.38 ± 0.09
2021 Mar 15	TYC 5316-793-1	r: 11.27	7.87 ± 0.04	6.56 ± 0.04
		i: 11.08	7.63 ± 0.06	6.32 ± 0.06
		\|$z$\|⁠: 10.98	7.57 ± 0.11	6.26 ± 0.11
	TYC 5316-685-1	r: 11.71	7.87 ± 0.04	6.56 ± 0.04
		i: 11.53	7.55 ± 0.06	6.24 ± 0.06
		\|$z$\|⁠: 11.44	7.54 ± 0.11	6.23 ± 0.11
		Average (r)	7.87 ± 0.04	6.56 ± 0.04
		Average (i)	7.59 ± 0.06	6.28 ± 0.06
		Average (⁠\|$z$\|⁠)	7.55 ± 0.11	6.24 ± 0.11
2021 Nov 15	HD 348402	r: 9.58	5.64 ± 0.02	4.89 ± 0.02
		i: 9.27	5.50 ± 0.02	4.75 ± 0.02
		\|$z$\|⁠: 9.10	5.39 ± 0.02	4.64 ± 0.02
	HD 348403	r: 10.10	5.66 ± 0.02	4.91 ± 0.02
		i: 9.74	5.52 ± 0.02	4.77 ± 0.02
		\|$z$\|⁠: 9.55	5.41 ± 0.02	4.66 ± 0.02
		Average (r)	5.65 ± 0.02	4.90 ± 0.02
		Average (i)	5.51 ± 0.02	4.76 ± 0.02
		Average (⁠\|$z$\|⁠)	5.40 ± 0.02	4.65 ± 0.02
2021 Nov 17	TYC 3492-1641-1	r: 10.56	7.51 ± 0.12	6.31 ± 0.12
		i: 10.47	7.28 ± 0.12	6.08 ± 0.12
		\|$z$\|⁠: 10.42	7.09 ± 0.08	5.89 ± 0.08
	UCAC4 678-059331	r: 12.74	7.53 ± 0.13	6.33 ± 0.13
		i: 12.61	7.35 ± 0.12	6.14 ± 0.12
		\|$z$\|⁠: 12.54	7.16 ± 0.08	5.96 ± 0.08
		Average (r)	7.52 ± 0.12	6.32 ± 0.12
		Average (i)	7.31 ± 0.12	6.11 ± 0.12
		Average (⁠\|$z$\|⁠)	7.13 ± 0.08	5.92 ± 0.08
Median magnitude of Visorsat in r, i, and \|$z$\| bands
		Visorsat (r)	7.70 ± 0.06	6.44 ± 0.06
		Visorsat (i)	7.44 ± 0.06	6.19 ± 0.06
		Visorsat (⁠\|$z$\|⁠)	7.31 ± 0.08	6.09 ± 0.09
Target: STARLINK-1113, telescope/instrument: 0.55 m SaCRA telescope/MuSaSHI^‡
2022 Jan 26	BD +15 1039	r: 10.00	5.18 ± 0.02	4.25 ± 0.03
		i: 9.61	4.71 ± 0.02	3.78 ± 0.03
		\|$z$\|⁠: 9.39	4.47 ± 0.02	3.54 ± 0.02
	TYC 1313-716-1	r: 10.03	5.19 ± 0.02	4.26 ± 0.03
		i: 9.68	4.73 ± 0.02	3.80 ± 0.03
		\|$z$\|⁠: 9.49	4.52 ± 0.02	3.59 ± 0.02
		Average (r)	5.19 ± 0.02	4.26 ± 0.03
		Average (i)	4.72 ± 0.02	3.79 ± 0.03
		Average (⁠\|$z$\|⁠)	4.50 ± 0.02	3.57 ± 0.02

Magnitudes at a height of 550 km.

†

Magnitudes estimated by equation (1).

‡

Magnitudes estimated by equation (4).

Table 3.

Open in new tab

Magnitudes of Visorsat, STARLINK-1113, and reference stars.

Date	Reference star	Vega magnitude	Vega magnitude	Normalized magnitude*
		(reference star)	(satellite)	(satellite)
Target: Visorsat, telescope/instrument: 105 cm Murikabushi telescope/MITSuME^†
2021 Feb 14	HD 163080	g^′: 10.96	6.51 ± 0.05	6.00 ± 0.06
		R_C: 9.58	6.15 ± 0.04	5.64 ± 0.05
		I_C: 8.91	5.70 ± 0.05	5.20 ± 0.05
	TYC 421-1373-1	g^′: 10.91	6.41 ± 0.05	5.91 ± 0.06
		R_C: 10.06	6.10 ± 0.04	5.59 ± 0.05
		I_C: 9.62	5.73 ± 0.05	5.22 ± 0.06
		Average (g^′):	6.46 ± 0.05	5.96 ± 0.06
		Average (R_C):	6.12 ± 0.04	5.62 ± 0.05
		Average (I_C):	5.72 ± 0.05	5.21 ± 0.06
2021 Feb 15	TYC 1475-739-1	g^′: 10.74	7.61 ± 0.06	7.51 ± 0.06
		R_C: 9.93	6.92 ± 0.03	6.82 ± 0.03
		I_C: 9.43	6.15 ± 0.07	6.05 ± 0.07
	UCAC4 558-053934	g^′: 13.46	7.43 ± 0.17	7.33 ± 0.17
		R_C: 12.11	6.83 ± 0.08	6.74 ± 0.08
		I_C: 11.49	6.20 ± 0.12	6.10 ± 0.12
		Average (g^′):	7.52 ± 0.13	7.42 ± 0.13
		Average (R_C):	6.88 ± 0.06	6.78 ± 0.06
		Average (I_C):	6.18 ± 0.10	6.08 ± 0.10
2021 Mar 14	UCAC4 623-007922	g^′: 11.90	7.77 ± 0.15	6.09 ± 0.15
		R_C: 10.93	7.16 ± 0.04	5.48 ± 0.04
		I_C: 10.40	6.69 ± 0.06	5.01 ± 0.07
	TYC 2332-522-1	g^′: 11.36	7.72 ± 0.09	6.05 ± 0.09
		R_C: 10.77	6.85 ± 0.03	5.17 ± 0.04
		I_C: 10.38	6.53 ± 0.06	4.86 ± 0.07
		Average (g^′):	7.74 ± 0.12	6.07 ± 0.12
		Average (R_C):	7.00 ± 0.03	5.33 ± 0.04
		Average (I_C):	6.61 ± 0.06	4.94 ± 0.07
Target: STARLINK-1113, telescope/instrument: 105 cm Murikabushi telescope/MITSuME^†
2021 Feb 5	UCAC4 370-003115	g^′: 12.76	5.77 ± 0.11	5.00 ± 0.11
		R_C: 12.01	5.23 ± 0.04	4.47 ± 0.05
		I_C: 11.60	4.82 ± 0.09	4.06 ± 0.10
	UCAC4 370-003114	g^′: 13.91	6.00 ± 0.20	5.24 ± 0.21
		R_C: 13.07	5.09 ± 0.09	4.33 ± 0.10
		I_C: 12.59	4.78 ± 0.13	4.02 ± 0.13
		Average (g^′):	5.89 ± 0.17	5.12 ± 0.17
		Average (R_C):	5.16 ± 0.07	4.40 ± 0.08
		Average (I_C):	4.80 ± 0.11	4.04 ± 0.12
Target: Visorsat, telescope/instrument: Akeno 50 cm/MITSuME^†
2021 Nov 11	BD −20 6624	g^′: 11.22	6.89 ± 0.09	5.61 ± 0.09
		R_C: 10.69	5.79 ± 0.05	4.51 ± 0.05
		I_C: 10.37	5.21 ± 0.12	3.93 ± 0.12
	BD −20 6621	g^′: 11.14	6.83 ± 0.11	5.55 ± 0.11
		R_C: 10.67	5.71 ± 0.06	4.43 ± 0.06
		I_C: 10.33	5.05 ± 0.14	3.77 ± 0.14
		Average (g^′)	6.86 ± 0.10	5.58 ± 0.10
		Average (R_C)	5.75 ± 0.06	4.46 ± 0.06
		Average (I_C)	5.13 ± 0.13	3.85 ± 0.12
Target: Visorsat, telescope/instrument: Akeno 50 cm/MITSuME^†
2022 Jan 17	UCAC4 399-000139	g^′: 12.73	7.69 ± 0.34	6.61 ± 0.34
		R_C: 12.16	7.35 ± 0.15	6.27 ± 0.15
		I_C: 11.80	6.96 ± 0.28	5.88 ± 0.28
	UCAC4 399-000135	g^′: 12.38	7.70 ± 0.19	6.61 ± 0.19
		R_C: 11.89	7.34 ± 0.13	6.25 ± 0.14
		I_C: 11.72	6.94 ± 0.21	5.86 ± 0.21
		Average (g^′)	7.69 ± 0.28	6.61 ± 0.28
		Average (R_C)	7.35 ± 0.14	6.26 ± 0.15
		Average (I_C)	6.95 ± 0.24	5.87 ± 0.25
Target: STARLINK-1113, telescope/instrument: Akeno 50 cm/MITSuME^†
2021 Mar 17	BD −02 4622	g^′: 11.66	6.93 ± 0.08	6.28 ± 0.08
		R_C: 10.65	6.02 ± 0.04	5.37 ± 0.04
		I_C: 9.97	5.41 ± 0.09	4.77 ± 0.09
	BD −02 4617	g^′: 11.28	6.86 ± 0.07	6.21 ± 0.08
		R_C: 10.58	6.01 ± 0.06	5.37 ± 0.06
		I_C: 10.11	5.43 ± 0.12	4.78 ± 0.12
		Average (g^′)	6.90 ± 0.08	6.25 ± 0.08
		Average (R_C)	6.02 ± 0.05	5.37 ± 0.05
		Average (I_C)	5.42 ± 0.11	4.77 ± 0.10
2021 Mar 18	IRAS 17251+1347	g^′: 11.52	6.01 ± 0.10	5.83 ± 0.10
		R_C: 9.45	4.95 ± 0.02	4.78 ± 0.02
		I_C: 7.72	4.45 ± 0.04	4.27 ± 0.04
	BD +13 3376	g^′: 10.00	5.87 ± 0.04	5.70 ± 0.04
		R_C: 9.45	5.10 ± 0.03	4.93 ± 0.03
		I_C: 8.95	4.59 ± 0.04	4.41 ± 0.04
		Average (g^′)	5.94 ± 0.08	5.77 ± 0.08
		Average (R_C)	5.03 ± 0.02	4.85 ± 0.03
		Average (I_C)	4.52 ± 0.04	4.34 ± 0.04
2021 Mar 22	TYC 4151-615-1	g^′: 10.57	6.23 ± 0.01	5.06 ± 0.02
		R_C: 9.91	5.15 ± 0.01	3.97 ± 0.01
		I_C: 9.56	4.64 ± 0.04	3.49 ± 0.04
	TYC 4151-677-1	g^′: 11.71	6.21 ± 0.03	5.03 ± 0.03
		R_C: 10.80	5.15 ± 0.02	3.98 ± 0.02
		I_C: 10.31	4.61 ± 0.09	3.44 ± 0.09
		Average (g^′)	6.22 ± 0.03	5.05 ± 0.03
		Average (R_C)	5.15 ± 0.02	3.98 ± 0.02
		Average (I_C)	4.63 ± 0.07	3.45 ± 0.07
Median magnitude of Visorsat and STARLINK-1113 in g^′, R_C, and I_C bands
		Visorsat (g^′)	7.52 ± 0.10	6.07 ± 0.10
		Visorsat (R_C)	6.84 ± 0.04	5.61 ± 0.05
		Visorsat (I_C)	6.18 ± 0.09	5.21 ± 0.09
		STARLINK-1113 (g^′)	6.11 ± 0.07	5.47 ± 0.08
		STARLINK-1113 (R_C)	5.15 ± 0.03	4.63 ± 0.04
		STARLINK-1113 (I_C)	4.71 ± 0.09	4.17 ± 0.09
Target: Visorsat, telescope/instrument: Kanata/HONIR^†
2021 Mar 15	TYC 4805-96-1	V: 10.64	7.06 ± 0.12	6.61 ± 0.13
		H: 9.86	4.66 ± 0.06	4.21 ± 0.07
	HD 295837	V: 11.15	7.06 ± 0.12	6.61 ± 0.12
		H: 10.65	4.56 ± 0.10	4.10 ± 0.10
		Average (V)	7.06 ± 0.12	6.61 ± 0.12
		Average (H)	4.61 ± 0.08	4.15 ± 0.09
2022 Jan 17	TYC 5853-116-1	V: 11.76	7.86 ± 0.16	6.82 ± 0.20
		H: 10.40	6.40 ± 0.10	5.27 ± 0.10
	UCAC4 350-001273	V: 11.01	7.95 ± 0.15	6.91 ± 0.20
	2MASS 01080945−2008310	H: 12.22	6.25 ± 0.41	5.12 ± 0.41
		Average (V)	7.90 ± 0.16	6.86 ± 0.20
		Average (H)	6.32 ± 0.30	5.20 ± 0.30
2022 Jan 19	UCAC4 529-148682	B: 12.82	7.10 ± 0.31	6.60 ± 0.34
		H: 9.56	4.94 ± 0.08	4.35 ± 0.09
	UCAC4 529-148667	B: 13.91	7.44 ± 0.57	6.94 ± 0.58
		H: 10.58	4.78 ± 0.10	4.20 ± 0.11
		Average (B)	7.27 ± 0.46	6.77 ± 0.48
		Average (H)	4.86 ± 0.09	4.27 ± 0.10
Target: STARLINK-1113, telescope/instrument: Kanata/HONIR^†
2021 Mar 19	BD +29 3349	V: 10.06	5.46 ± 0.09	5.16 ± 0.12
		H: 7.97	3.78 ± 0.03	3.48 ± 0.09
	TYC 2120-535-1	V: 11.86	5.64 ± 0.12	5.34 ± 0.15
		H: 10.09	3.93 ± 0.07	3.63 ± 0.11
		Average (V)	5.56 ± 0.11	5.25 ± 0.13
		Average (H)	3.85 ± 0.05	3.55 ± 0.10
2021 Mar 22	TYC 4619-103-1	V: 10.49	6.56 ± 0.09	5.32 ± 0.10
	TYC 4619-147-1	V: 11.23	6.60 ± 0.09	5.37 ± 0.10
		Average (V)	6.58 ± 0.09	5.34 ± 0.10
2022 Jan 24	BD +42 4606	B: 11.15	7.10 ± 0.13	6.27 ± 0.19
		H: 5.97	4.35 ± 0.04	3.42 ± 0.06
	TYC 3229-1917-1	B: 12.62	6.78 ± 0.40	5.95 ± 0.43
		H: 10.75	4.36 ± 0.09	3.43 ± 0.10
		Average (B)	6.94 ± 0.30	6.11 ± 0.33
		Average (H)	4.35 ± 0.07	3.43 ± 0.08
Median magnitude of Visorsat and STARLINK-1113 in V and H bands
		Visorsat (V)	7.46 ± 0.14	6.72 ± 0.16
		Visorsat (H)	4.86 ± 0.10	4.28 ± 0.10
		STARLINK-1113 (V)	6.10 ± 0.09	5.33 ± 0.11
		STARLINK-1113 (H)	4.14 ± 0.06	3.45 ± 0.09
Target: Visorsat, telescope/instrument: Nayuta/NIC^‡
2021 Feb 15	UCAC4 471-058903	J: 11.31	4.50 ± 0.24	3.80 ± 0.24
		H: 10.71	4.08 ± 0.05	3.38 ± 0.06
		K_s: 10.41	4.36 ± 0.10	3.65 ± 0.11
Target: STARLINK-1113, telescope/instrument: Nayuta/NIC^‡
2021 Nov 2	UCAC4 462-062055	J: 11.45	5.16 ± 0.08	3.88 ± 0.09
		H: 10.89	4.80 ± 0.04	3.52 ± 0.05
		K_s: 10.80	4.84 ± 0.07	3.56 ± 0.07
	UCAC4 462-062051	J: 10.55	4.80 ± 0.06	3.52 ± 0.07
		H: 9.78	4.70 ± 0.03	3.42 ± 0.04
		K_s: 9.60	4.81 ± 0.07	3.53 ± 0.07
		Average (J)	4.98 ± 0.07	3.70 ± 0.08
		Average (H)	4.75 ± 0.03	3.47 ± 0.05
		Average (K_s)	4.83 ± 0.07	3.55 ± 0.07
Target: Visorsat, telescope/instrument: 0.55 m SaCRA telescope/MuSaSHI^‡
2021 Mar 11	BD +61 273	r: 9.60	8.18 ± 0.07	7.03 ± 0.08
		i: 9.39	7.79 ± 0.05	6.64 ± 0.06
		\|$z$\|⁠: 9.28	7.47 ± 0.08	6.32 ± 0.09
	TYC 4031-453-1	r: 10.22	8.07 ± 0.07	6.91 ± 0.08
		i: 10.30	7.80 ± 0.05	6.65 ± 0.06
		\|$z$\|⁠: 10.35	7.59 ± 0.08	6.44 ± 0.09
		Average (r)	8.12 ± 0.07	6.97 ± 0.08
		Average (i)	7.80 ± 0.05	6.64 ± 0.06
		Average (⁠\|$z$\|⁠)	7.53 ± 0.08	6.38 ± 0.09
2021 Mar 15	TYC 5316-793-1	r: 11.27	7.87 ± 0.04	6.56 ± 0.04
		i: 11.08	7.63 ± 0.06	6.32 ± 0.06
		\|$z$\|⁠: 10.98	7.57 ± 0.11	6.26 ± 0.11
	TYC 5316-685-1	r: 11.71	7.87 ± 0.04	6.56 ± 0.04
		i: 11.53	7.55 ± 0.06	6.24 ± 0.06
		\|$z$\|⁠: 11.44	7.54 ± 0.11	6.23 ± 0.11
		Average (r)	7.87 ± 0.04	6.56 ± 0.04
		Average (i)	7.59 ± 0.06	6.28 ± 0.06
		Average (⁠\|$z$\|⁠)	7.55 ± 0.11	6.24 ± 0.11
2021 Nov 15	HD 348402	r: 9.58	5.64 ± 0.02	4.89 ± 0.02
		i: 9.27	5.50 ± 0.02	4.75 ± 0.02
		\|$z$\|⁠: 9.10	5.39 ± 0.02	4.64 ± 0.02
	HD 348403	r: 10.10	5.66 ± 0.02	4.91 ± 0.02
		i: 9.74	5.52 ± 0.02	4.77 ± 0.02
		\|$z$\|⁠: 9.55	5.41 ± 0.02	4.66 ± 0.02
		Average (r)	5.65 ± 0.02	4.90 ± 0.02
		Average (i)	5.51 ± 0.02	4.76 ± 0.02
		Average (⁠\|$z$\|⁠)	5.40 ± 0.02	4.65 ± 0.02
2021 Nov 17	TYC 3492-1641-1	r: 10.56	7.51 ± 0.12	6.31 ± 0.12
		i: 10.47	7.28 ± 0.12	6.08 ± 0.12
		\|$z$\|⁠: 10.42	7.09 ± 0.08	5.89 ± 0.08
	UCAC4 678-059331	r: 12.74	7.53 ± 0.13	6.33 ± 0.13
		i: 12.61	7.35 ± 0.12	6.14 ± 0.12
		\|$z$\|⁠: 12.54	7.16 ± 0.08	5.96 ± 0.08
		Average (r)	7.52 ± 0.12	6.32 ± 0.12
		Average (i)	7.31 ± 0.12	6.11 ± 0.12
		Average (⁠\|$z$\|⁠)	7.13 ± 0.08	5.92 ± 0.08
Median magnitude of Visorsat in r, i, and \|$z$\| bands
		Visorsat (r)	7.70 ± 0.06	6.44 ± 0.06
		Visorsat (i)	7.44 ± 0.06	6.19 ± 0.06
		Visorsat (⁠\|$z$\|⁠)	7.31 ± 0.08	6.09 ± 0.09
Target: STARLINK-1113, telescope/instrument: 0.55 m SaCRA telescope/MuSaSHI^‡
2022 Jan 26	BD +15 1039	r: 10.00	5.18 ± 0.02	4.25 ± 0.03
		i: 9.61	4.71 ± 0.02	3.78 ± 0.03
		\|$z$\|⁠: 9.39	4.47 ± 0.02	3.54 ± 0.02
	TYC 1313-716-1	r: 10.03	5.19 ± 0.02	4.26 ± 0.03
		i: 9.68	4.73 ± 0.02	3.80 ± 0.03
		\|$z$\|⁠: 9.49	4.52 ± 0.02	3.59 ± 0.02
		Average (r)	5.19 ± 0.02	4.26 ± 0.03
		Average (i)	4.72 ± 0.02	3.79 ± 0.03
		Average (⁠\|$z$\|⁠)	4.50 ± 0.02	3.57 ± 0.02

Date	Reference star	Vega magnitude	Vega magnitude	Normalized magnitude*
		(reference star)	(satellite)	(satellite)
Target: Visorsat, telescope/instrument: 105 cm Murikabushi telescope/MITSuME^†
2021 Feb 14	HD 163080	g^′: 10.96	6.51 ± 0.05	6.00 ± 0.06
		R_C: 9.58	6.15 ± 0.04	5.64 ± 0.05
		I_C: 8.91	5.70 ± 0.05	5.20 ± 0.05
	TYC 421-1373-1	g^′: 10.91	6.41 ± 0.05	5.91 ± 0.06
		R_C: 10.06	6.10 ± 0.04	5.59 ± 0.05
		I_C: 9.62	5.73 ± 0.05	5.22 ± 0.06
		Average (g^′):	6.46 ± 0.05	5.96 ± 0.06
		Average (R_C):	6.12 ± 0.04	5.62 ± 0.05
		Average (I_C):	5.72 ± 0.05	5.21 ± 0.06
2021 Feb 15	TYC 1475-739-1	g^′: 10.74	7.61 ± 0.06	7.51 ± 0.06
		R_C: 9.93	6.92 ± 0.03	6.82 ± 0.03
		I_C: 9.43	6.15 ± 0.07	6.05 ± 0.07
	UCAC4 558-053934	g^′: 13.46	7.43 ± 0.17	7.33 ± 0.17
		R_C: 12.11	6.83 ± 0.08	6.74 ± 0.08
		I_C: 11.49	6.20 ± 0.12	6.10 ± 0.12
		Average (g^′):	7.52 ± 0.13	7.42 ± 0.13
		Average (R_C):	6.88 ± 0.06	6.78 ± 0.06
		Average (I_C):	6.18 ± 0.10	6.08 ± 0.10
2021 Mar 14	UCAC4 623-007922	g^′: 11.90	7.77 ± 0.15	6.09 ± 0.15
		R_C: 10.93	7.16 ± 0.04	5.48 ± 0.04
		I_C: 10.40	6.69 ± 0.06	5.01 ± 0.07
	TYC 2332-522-1	g^′: 11.36	7.72 ± 0.09	6.05 ± 0.09
		R_C: 10.77	6.85 ± 0.03	5.17 ± 0.04
		I_C: 10.38	6.53 ± 0.06	4.86 ± 0.07
		Average (g^′):	7.74 ± 0.12	6.07 ± 0.12
		Average (R_C):	7.00 ± 0.03	5.33 ± 0.04
		Average (I_C):	6.61 ± 0.06	4.94 ± 0.07
Target: STARLINK-1113, telescope/instrument: 105 cm Murikabushi telescope/MITSuME^†
2021 Feb 5	UCAC4 370-003115	g^′: 12.76	5.77 ± 0.11	5.00 ± 0.11
		R_C: 12.01	5.23 ± 0.04	4.47 ± 0.05
		I_C: 11.60	4.82 ± 0.09	4.06 ± 0.10
	UCAC4 370-003114	g^′: 13.91	6.00 ± 0.20	5.24 ± 0.21
		R_C: 13.07	5.09 ± 0.09	4.33 ± 0.10
		I_C: 12.59	4.78 ± 0.13	4.02 ± 0.13
		Average (g^′):	5.89 ± 0.17	5.12 ± 0.17
		Average (R_C):	5.16 ± 0.07	4.40 ± 0.08
		Average (I_C):	4.80 ± 0.11	4.04 ± 0.12
Target: Visorsat, telescope/instrument: Akeno 50 cm/MITSuME^†
2021 Nov 11	BD −20 6624	g^′: 11.22	6.89 ± 0.09	5.61 ± 0.09
		R_C: 10.69	5.79 ± 0.05	4.51 ± 0.05
		I_C: 10.37	5.21 ± 0.12	3.93 ± 0.12
	BD −20 6621	g^′: 11.14	6.83 ± 0.11	5.55 ± 0.11
		R_C: 10.67	5.71 ± 0.06	4.43 ± 0.06
		I_C: 10.33	5.05 ± 0.14	3.77 ± 0.14
		Average (g^′)	6.86 ± 0.10	5.58 ± 0.10
		Average (R_C)	5.75 ± 0.06	4.46 ± 0.06
		Average (I_C)	5.13 ± 0.13	3.85 ± 0.12
Target: Visorsat, telescope/instrument: Akeno 50 cm/MITSuME^†
2022 Jan 17	UCAC4 399-000139	g^′: 12.73	7.69 ± 0.34	6.61 ± 0.34
		R_C: 12.16	7.35 ± 0.15	6.27 ± 0.15
		I_C: 11.80	6.96 ± 0.28	5.88 ± 0.28
	UCAC4 399-000135	g^′: 12.38	7.70 ± 0.19	6.61 ± 0.19
		R_C: 11.89	7.34 ± 0.13	6.25 ± 0.14
		I_C: 11.72	6.94 ± 0.21	5.86 ± 0.21
		Average (g^′)	7.69 ± 0.28	6.61 ± 0.28
		Average (R_C)	7.35 ± 0.14	6.26 ± 0.15
		Average (I_C)	6.95 ± 0.24	5.87 ± 0.25
Target: STARLINK-1113, telescope/instrument: Akeno 50 cm/MITSuME^†
2021 Mar 17	BD −02 4622	g^′: 11.66	6.93 ± 0.08	6.28 ± 0.08
		R_C: 10.65	6.02 ± 0.04	5.37 ± 0.04
		I_C: 9.97	5.41 ± 0.09	4.77 ± 0.09
	BD −02 4617	g^′: 11.28	6.86 ± 0.07	6.21 ± 0.08
		R_C: 10.58	6.01 ± 0.06	5.37 ± 0.06
		I_C: 10.11	5.43 ± 0.12	4.78 ± 0.12
		Average (g^′)	6.90 ± 0.08	6.25 ± 0.08
		Average (R_C)	6.02 ± 0.05	5.37 ± 0.05
		Average (I_C)	5.42 ± 0.11	4.77 ± 0.10
2021 Mar 18	IRAS 17251+1347	g^′: 11.52	6.01 ± 0.10	5.83 ± 0.10
		R_C: 9.45	4.95 ± 0.02	4.78 ± 0.02
		I_C: 7.72	4.45 ± 0.04	4.27 ± 0.04
	BD +13 3376	g^′: 10.00	5.87 ± 0.04	5.70 ± 0.04
		R_C: 9.45	5.10 ± 0.03	4.93 ± 0.03
		I_C: 8.95	4.59 ± 0.04	4.41 ± 0.04
		Average (g^′)	5.94 ± 0.08	5.77 ± 0.08
		Average (R_C)	5.03 ± 0.02	4.85 ± 0.03
		Average (I_C)	4.52 ± 0.04	4.34 ± 0.04
2021 Mar 22	TYC 4151-615-1	g^′: 10.57	6.23 ± 0.01	5.06 ± 0.02
		R_C: 9.91	5.15 ± 0.01	3.97 ± 0.01
		I_C: 9.56	4.64 ± 0.04	3.49 ± 0.04
	TYC 4151-677-1	g^′: 11.71	6.21 ± 0.03	5.03 ± 0.03
		R_C: 10.80	5.15 ± 0.02	3.98 ± 0.02
		I_C: 10.31	4.61 ± 0.09	3.44 ± 0.09
		Average (g^′)	6.22 ± 0.03	5.05 ± 0.03
		Average (R_C)	5.15 ± 0.02	3.98 ± 0.02
		Average (I_C)	4.63 ± 0.07	3.45 ± 0.07
Median magnitude of Visorsat and STARLINK-1113 in g^′, R_C, and I_C bands
		Visorsat (g^′)	7.52 ± 0.10	6.07 ± 0.10
		Visorsat (R_C)	6.84 ± 0.04	5.61 ± 0.05
		Visorsat (I_C)	6.18 ± 0.09	5.21 ± 0.09
		STARLINK-1113 (g^′)	6.11 ± 0.07	5.47 ± 0.08
		STARLINK-1113 (R_C)	5.15 ± 0.03	4.63 ± 0.04
		STARLINK-1113 (I_C)	4.71 ± 0.09	4.17 ± 0.09
Target: Visorsat, telescope/instrument: Kanata/HONIR^†
2021 Mar 15	TYC 4805-96-1	V: 10.64	7.06 ± 0.12	6.61 ± 0.13
		H: 9.86	4.66 ± 0.06	4.21 ± 0.07
	HD 295837	V: 11.15	7.06 ± 0.12	6.61 ± 0.12
		H: 10.65	4.56 ± 0.10	4.10 ± 0.10
		Average (V)	7.06 ± 0.12	6.61 ± 0.12
		Average (H)	4.61 ± 0.08	4.15 ± 0.09
2022 Jan 17	TYC 5853-116-1	V: 11.76	7.86 ± 0.16	6.82 ± 0.20
		H: 10.40	6.40 ± 0.10	5.27 ± 0.10
	UCAC4 350-001273	V: 11.01	7.95 ± 0.15	6.91 ± 0.20
	2MASS 01080945−2008310	H: 12.22	6.25 ± 0.41	5.12 ± 0.41
		Average (V)	7.90 ± 0.16	6.86 ± 0.20
		Average (H)	6.32 ± 0.30	5.20 ± 0.30
2022 Jan 19	UCAC4 529-148682	B: 12.82	7.10 ± 0.31	6.60 ± 0.34
		H: 9.56	4.94 ± 0.08	4.35 ± 0.09
	UCAC4 529-148667	B: 13.91	7.44 ± 0.57	6.94 ± 0.58
		H: 10.58	4.78 ± 0.10	4.20 ± 0.11
		Average (B)	7.27 ± 0.46	6.77 ± 0.48
		Average (H)	4.86 ± 0.09	4.27 ± 0.10
Target: STARLINK-1113, telescope/instrument: Kanata/HONIR^†
2021 Mar 19	BD +29 3349	V: 10.06	5.46 ± 0.09	5.16 ± 0.12
		H: 7.97	3.78 ± 0.03	3.48 ± 0.09
	TYC 2120-535-1	V: 11.86	5.64 ± 0.12	5.34 ± 0.15
		H: 10.09	3.93 ± 0.07	3.63 ± 0.11
		Average (V)	5.56 ± 0.11	5.25 ± 0.13
		Average (H)	3.85 ± 0.05	3.55 ± 0.10
2021 Mar 22	TYC 4619-103-1	V: 10.49	6.56 ± 0.09	5.32 ± 0.10
	TYC 4619-147-1	V: 11.23	6.60 ± 0.09	5.37 ± 0.10
		Average (V)	6.58 ± 0.09	5.34 ± 0.10
2022 Jan 24	BD +42 4606	B: 11.15	7.10 ± 0.13	6.27 ± 0.19
		H: 5.97	4.35 ± 0.04	3.42 ± 0.06
	TYC 3229-1917-1	B: 12.62	6.78 ± 0.40	5.95 ± 0.43
		H: 10.75	4.36 ± 0.09	3.43 ± 0.10
		Average (B)	6.94 ± 0.30	6.11 ± 0.33
		Average (H)	4.35 ± 0.07	3.43 ± 0.08
Median magnitude of Visorsat and STARLINK-1113 in V and H bands
		Visorsat (V)	7.46 ± 0.14	6.72 ± 0.16
		Visorsat (H)	4.86 ± 0.10	4.28 ± 0.10
		STARLINK-1113 (V)	6.10 ± 0.09	5.33 ± 0.11
		STARLINK-1113 (H)	4.14 ± 0.06	3.45 ± 0.09
Target: Visorsat, telescope/instrument: Nayuta/NIC^‡
2021 Feb 15	UCAC4 471-058903	J: 11.31	4.50 ± 0.24	3.80 ± 0.24
		H: 10.71	4.08 ± 0.05	3.38 ± 0.06
		K_s: 10.41	4.36 ± 0.10	3.65 ± 0.11
Target: STARLINK-1113, telescope/instrument: Nayuta/NIC^‡
2021 Nov 2	UCAC4 462-062055	J: 11.45	5.16 ± 0.08	3.88 ± 0.09
		H: 10.89	4.80 ± 0.04	3.52 ± 0.05
		K_s: 10.80	4.84 ± 0.07	3.56 ± 0.07
	UCAC4 462-062051	J: 10.55	4.80 ± 0.06	3.52 ± 0.07
		H: 9.78	4.70 ± 0.03	3.42 ± 0.04
		K_s: 9.60	4.81 ± 0.07	3.53 ± 0.07
		Average (J)	4.98 ± 0.07	3.70 ± 0.08
		Average (H)	4.75 ± 0.03	3.47 ± 0.05
		Average (K_s)	4.83 ± 0.07	3.55 ± 0.07
Target: Visorsat, telescope/instrument: 0.55 m SaCRA telescope/MuSaSHI^‡
2021 Mar 11	BD +61 273	r: 9.60	8.18 ± 0.07	7.03 ± 0.08
		i: 9.39	7.79 ± 0.05	6.64 ± 0.06
		\|$z$\|⁠: 9.28	7.47 ± 0.08	6.32 ± 0.09
	TYC 4031-453-1	r: 10.22	8.07 ± 0.07	6.91 ± 0.08
		i: 10.30	7.80 ± 0.05	6.65 ± 0.06
		\|$z$\|⁠: 10.35	7.59 ± 0.08	6.44 ± 0.09
		Average (r)	8.12 ± 0.07	6.97 ± 0.08
		Average (i)	7.80 ± 0.05	6.64 ± 0.06
		Average (⁠\|$z$\|⁠)	7.53 ± 0.08	6.38 ± 0.09
2021 Mar 15	TYC 5316-793-1	r: 11.27	7.87 ± 0.04	6.56 ± 0.04
		i: 11.08	7.63 ± 0.06	6.32 ± 0.06
		\|$z$\|⁠: 10.98	7.57 ± 0.11	6.26 ± 0.11
	TYC 5316-685-1	r: 11.71	7.87 ± 0.04	6.56 ± 0.04
		i: 11.53	7.55 ± 0.06	6.24 ± 0.06
		\|$z$\|⁠: 11.44	7.54 ± 0.11	6.23 ± 0.11
		Average (r)	7.87 ± 0.04	6.56 ± 0.04
		Average (i)	7.59 ± 0.06	6.28 ± 0.06
		Average (⁠\|$z$\|⁠)	7.55 ± 0.11	6.24 ± 0.11
2021 Nov 15	HD 348402	r: 9.58	5.64 ± 0.02	4.89 ± 0.02
		i: 9.27	5.50 ± 0.02	4.75 ± 0.02
		\|$z$\|⁠: 9.10	5.39 ± 0.02	4.64 ± 0.02
	HD 348403	r: 10.10	5.66 ± 0.02	4.91 ± 0.02
		i: 9.74	5.52 ± 0.02	4.77 ± 0.02
		\|$z$\|⁠: 9.55	5.41 ± 0.02	4.66 ± 0.02
		Average (r)	5.65 ± 0.02	4.90 ± 0.02
		Average (i)	5.51 ± 0.02	4.76 ± 0.02
		Average (⁠\|$z$\|⁠)	5.40 ± 0.02	4.65 ± 0.02
2021 Nov 17	TYC 3492-1641-1	r: 10.56	7.51 ± 0.12	6.31 ± 0.12
		i: 10.47	7.28 ± 0.12	6.08 ± 0.12
		\|$z$\|⁠: 10.42	7.09 ± 0.08	5.89 ± 0.08
	UCAC4 678-059331	r: 12.74	7.53 ± 0.13	6.33 ± 0.13
		i: 12.61	7.35 ± 0.12	6.14 ± 0.12
		\|$z$\|⁠: 12.54	7.16 ± 0.08	5.96 ± 0.08
		Average (r)	7.52 ± 0.12	6.32 ± 0.12
		Average (i)	7.31 ± 0.12	6.11 ± 0.12
		Average (⁠\|$z$\|⁠)	7.13 ± 0.08	5.92 ± 0.08
Median magnitude of Visorsat in r, i, and \|$z$\| bands
		Visorsat (r)	7.70 ± 0.06	6.44 ± 0.06
		Visorsat (i)	7.44 ± 0.06	6.19 ± 0.06
		Visorsat (⁠\|$z$\|⁠)	7.31 ± 0.08	6.09 ± 0.09
Target: STARLINK-1113, telescope/instrument: 0.55 m SaCRA telescope/MuSaSHI^‡
2022 Jan 26	BD +15 1039	r: 10.00	5.18 ± 0.02	4.25 ± 0.03
		i: 9.61	4.71 ± 0.02	3.78 ± 0.03
		\|$z$\|⁠: 9.39	4.47 ± 0.02	3.54 ± 0.02
	TYC 1313-716-1	r: 10.03	5.19 ± 0.02	4.26 ± 0.03
		i: 9.68	4.73 ± 0.02	3.80 ± 0.03
		\|$z$\|⁠: 9.49	4.52 ± 0.02	3.59 ± 0.02
		Average (r)	5.19 ± 0.02	4.26 ± 0.03
		Average (i)	4.72 ± 0.02	3.79 ± 0.03
		Average (⁠\|$z$\|⁠)	4.50 ± 0.02	3.57 ± 0.02

Magnitudes at a height of 550 km.

†

Magnitudes estimated by equation (1).

‡

Magnitudes estimated by equation (4).

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