Table 3.
Open in new tab

K2-263 system parameters from combined fit.

Stellar parameters
Kepler limb-darkening coefficient q1|$0.35_{-0.15}^{+0.19}$|
Kepler limb-darkening coefficient q20.51 ± 0.34
Kepler limb-darkening coefficient u10.57 ± 0.39
Kepler limb-darkening coefficient u2|$-0.01_{-0.36}^{+0.41}$|
Systemic velocity γ (⁠|$\rm km\, s^{-1}$|⁠)29.999 84± 0.000 59
Linear term |$\dot{\gamma }(\rm m s^{-1}\, d^{-1})$|a|$7{\rm{\small E}-04} \pm 1.9{\rm{\small E}-03}$|
Quadratic term |$\ddot{\gamma }(\rm m s^{-1}\, d^{-2})$|a|$-5.40{\rm{\small E}-05} \pm 1.68{\rm{\small E}-05}$|
RV jitter sj|$1.11_{-0.64}^{+0.58} (\lt\! 1.39)$|
Transit and orbital parameters
Orbital period P (d)50.818 947± 0.000 094
Transit epoch |$T_{ \rm c} (\rm BJD_{TDB}-2450000$|⁠)8111.1274 ± 0.0012
Transit duration T14 (d)0.1453 ± 0.0038
Radius ratio Rp/R*|$0.0260_{-0.0010}^{+0.0013}$|
Inclination i (deg)|$89.24_{-0.07}^{+0.05}$|
a/R*|$64.7_{-2.5}^{+2.4}$|
Impact parameter b|$0.84_{-0.06}^{+0.03}$|
|$\sqrt{e} \cos {\omega }$||$0.03_{-0.23}^{+0.21}$|
|$\sqrt{e} \sin {\omega }$|0.08 ± 0.28
Orbital eccentricity e<0.14
Radial-velocity semi-amplitude K (⁠|$\rm m\, s^{-1}$|⁠)2.82 ± 0.58
Planetary parameters
Planet mass |$M_{\rm p}\, (\rm M_\oplus )$|14.8 ± 3.1
Planet radius |$R_{\rm p}\, (\rm R_\oplus )$|2.41 ± 0.12
Planet density ρp (⁠|$\rm g\,\,cm^{-3}$|⁠)|$5.7_{-1.4}^{+1.6}$|
Planet surface gravity log gp (cgs)|$3.4_{-0.11}^{+0.10}$|
Orbital semimajor axis a (au)0.2573 ± 0.0029
Equilibrium temperature Teq (K)b470 ± 10
Stellar parameters
Kepler limb-darkening coefficient q1|$0.35_{-0.15}^{+0.19}$|
Kepler limb-darkening coefficient q20.51 ± 0.34
Kepler limb-darkening coefficient u10.57 ± 0.39
Kepler limb-darkening coefficient u2|$-0.01_{-0.36}^{+0.41}$|
Systemic velocity γ (⁠|$\rm km\, s^{-1}$|⁠)29.999 84± 0.000 59
Linear term |$\dot{\gamma }(\rm m s^{-1}\, d^{-1})$|a|$7{\rm{\small E}-04} \pm 1.9{\rm{\small E}-03}$|
Quadratic term |$\ddot{\gamma }(\rm m s^{-1}\, d^{-2})$|a|$-5.40{\rm{\small E}-05} \pm 1.68{\rm{\small E}-05}$|
RV jitter sj|$1.11_{-0.64}^{+0.58} (\lt\! 1.39)$|
Transit and orbital parameters
Orbital period P (d)50.818 947± 0.000 094
Transit epoch |$T_{ \rm c} (\rm BJD_{TDB}-2450000$|⁠)8111.1274 ± 0.0012
Transit duration T14 (d)0.1453 ± 0.0038
Radius ratio Rp/R*|$0.0260_{-0.0010}^{+0.0013}$|
Inclination i (deg)|$89.24_{-0.07}^{+0.05}$|
a/R*|$64.7_{-2.5}^{+2.4}$|
Impact parameter b|$0.84_{-0.06}^{+0.03}$|
|$\sqrt{e} \cos {\omega }$||$0.03_{-0.23}^{+0.21}$|
|$\sqrt{e} \sin {\omega }$|0.08 ± 0.28
Orbital eccentricity e<0.14
Radial-velocity semi-amplitude K (⁠|$\rm m\, s^{-1}$|⁠)2.82 ± 0.58
Planetary parameters
Planet mass |$M_{\rm p}\, (\rm M_\oplus )$|14.8 ± 3.1
Planet radius |$R_{\rm p}\, (\rm R_\oplus )$|2.41 ± 0.12
Planet density ρp (⁠|$\rm g\,\,cm^{-3}$|⁠)|$5.7_{-1.4}^{+1.6}$|
Planet surface gravity log gp (cgs)|$3.4_{-0.11}^{+0.10}$|
Orbital semimajor axis a (au)0.2573 ± 0.0029
Equilibrium temperature Teq (K)b470 ± 10

aReference time is the average of the RV epochs.

bBlackbody equilibrium temperature assuming a null Bond albedo and uniform heat redistribution to the night-side.

Table 3.
Open in new tab

K2-263 system parameters from combined fit.

Stellar parameters
Kepler limb-darkening coefficient q1|$0.35_{-0.15}^{+0.19}$|
Kepler limb-darkening coefficient q20.51 ± 0.34
Kepler limb-darkening coefficient u10.57 ± 0.39
Kepler limb-darkening coefficient u2|$-0.01_{-0.36}^{+0.41}$|
Systemic velocity γ (⁠|$\rm km\, s^{-1}$|⁠)29.999 84± 0.000 59
Linear term |$\dot{\gamma }(\rm m s^{-1}\, d^{-1})$|a|$7{\rm{\small E}-04} \pm 1.9{\rm{\small E}-03}$|
Quadratic term |$\ddot{\gamma }(\rm m s^{-1}\, d^{-2})$|a|$-5.40{\rm{\small E}-05} \pm 1.68{\rm{\small E}-05}$|
RV jitter sj|$1.11_{-0.64}^{+0.58} (\lt\! 1.39)$|
Transit and orbital parameters
Orbital period P (d)50.818 947± 0.000 094
Transit epoch |$T_{ \rm c} (\rm BJD_{TDB}-2450000$|⁠)8111.1274 ± 0.0012
Transit duration T14 (d)0.1453 ± 0.0038
Radius ratio Rp/R*|$0.0260_{-0.0010}^{+0.0013}$|
Inclination i (deg)|$89.24_{-0.07}^{+0.05}$|
a/R*|$64.7_{-2.5}^{+2.4}$|
Impact parameter b|$0.84_{-0.06}^{+0.03}$|
|$\sqrt{e} \cos {\omega }$||$0.03_{-0.23}^{+0.21}$|
|$\sqrt{e} \sin {\omega }$|0.08 ± 0.28
Orbital eccentricity e<0.14
Radial-velocity semi-amplitude K (⁠|$\rm m\, s^{-1}$|⁠)2.82 ± 0.58
Planetary parameters
Planet mass |$M_{\rm p}\, (\rm M_\oplus )$|14.8 ± 3.1
Planet radius |$R_{\rm p}\, (\rm R_\oplus )$|2.41 ± 0.12
Planet density ρp (⁠|$\rm g\,\,cm^{-3}$|⁠)|$5.7_{-1.4}^{+1.6}$|
Planet surface gravity log gp (cgs)|$3.4_{-0.11}^{+0.10}$|
Orbital semimajor axis a (au)0.2573 ± 0.0029
Equilibrium temperature Teq (K)b470 ± 10
Stellar parameters
Kepler limb-darkening coefficient q1|$0.35_{-0.15}^{+0.19}$|
Kepler limb-darkening coefficient q20.51 ± 0.34
Kepler limb-darkening coefficient u10.57 ± 0.39
Kepler limb-darkening coefficient u2|$-0.01_{-0.36}^{+0.41}$|
Systemic velocity γ (⁠|$\rm km\, s^{-1}$|⁠)29.999 84± 0.000 59
Linear term |$\dot{\gamma }(\rm m s^{-1}\, d^{-1})$|a|$7{\rm{\small E}-04} \pm 1.9{\rm{\small E}-03}$|
Quadratic term |$\ddot{\gamma }(\rm m s^{-1}\, d^{-2})$|a|$-5.40{\rm{\small E}-05} \pm 1.68{\rm{\small E}-05}$|
RV jitter sj|$1.11_{-0.64}^{+0.58} (\lt\! 1.39)$|
Transit and orbital parameters
Orbital period P (d)50.818 947± 0.000 094
Transit epoch |$T_{ \rm c} (\rm BJD_{TDB}-2450000$|⁠)8111.1274 ± 0.0012
Transit duration T14 (d)0.1453 ± 0.0038
Radius ratio Rp/R*|$0.0260_{-0.0010}^{+0.0013}$|
Inclination i (deg)|$89.24_{-0.07}^{+0.05}$|
a/R*|$64.7_{-2.5}^{+2.4}$|
Impact parameter b|$0.84_{-0.06}^{+0.03}$|
|$\sqrt{e} \cos {\omega }$||$0.03_{-0.23}^{+0.21}$|
|$\sqrt{e} \sin {\omega }$|0.08 ± 0.28
Orbital eccentricity e<0.14
Radial-velocity semi-amplitude K (⁠|$\rm m\, s^{-1}$|⁠)2.82 ± 0.58
Planetary parameters
Planet mass |$M_{\rm p}\, (\rm M_\oplus )$|14.8 ± 3.1
Planet radius |$R_{\rm p}\, (\rm R_\oplus )$|2.41 ± 0.12
Planet density ρp (⁠|$\rm g\,\,cm^{-3}$|⁠)|$5.7_{-1.4}^{+1.6}$|
Planet surface gravity log gp (cgs)|$3.4_{-0.11}^{+0.10}$|
Orbital semimajor axis a (au)0.2573 ± 0.0029
Equilibrium temperature Teq (K)b470 ± 10

aReference time is the average of the RV epochs.

bBlackbody equilibrium temperature assuming a null Bond albedo and uniform heat redistribution to the night-side.

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