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Table 2

Value and 1σ errors derived for the WASP-103 star+planet system from our analysis.

Stellar parameters Value Unit

RA (J2000) 16 37 15.57 HH:MM:SS.SS
Dec (J2000) +07 11 00.07 DD:MM:SS.SS
V-magnitudeb 12.1 ± 0.01 mag
K-magnitudec 10.8 ± 0.02 mag
Spectral type F8V
Effective temperature Teff 6110 ± 160 K
Metallicity [Fe/H] 0.06 ± 0.13 dex
Lithium abundance log A(Li) 2.23 ± 0.13 dex
Aged 3–5 Gyr
Projected rotation velocity VsinI 10.6 ± 0.9 km s-1
Microturbulence Vr 1.1 ± 0.2 km s-1
Surface gravity log g cgs
Systemic RV −42.001 ± 0.005 km s-1
Density ρ ρ
Mass M M
Radius R R
Luminosity L L
Distance d 470 ± 35 parsec

Planet parameters Value Unit

RV semi-amplitude K 271 ± 15 m s-1
Planet-to-star area ratio (Rp/R)2 %
Planet-to-star radius ratio Rp/R
Transit impact parameter b 0.19 ± 0.13 R
Transit duration W 2.593 ± 0.024 hours
Time of inferior conjunction T0 2   456   459.59957 ± 0.00075 BJDTDB
Orbital period P 0.925542 ± 0.000019 d
Orbital inclination ip 86.3 ± 2.7 deg
Orbital semi-major axis a 0.01985 ± 0.00021 AU
Orbit scale factor a/R
Mass Mp 1.490 ± 0.088 MJup
Radius Rp RJup
Surface gravity log gp cgs
Density ρp g cm-3
Equilibrium temperatureeTeq K
Irradiation 109 erg s-1 cm-2
Roche limit aRf AU
a/aR

Notes.

(a)

2MASS.

(b)

Egret et al. (1992).

(c)

Skrutskie et al. (2006).

(d)

From lithium abundance and stellar evolution modeling.

(e)

Assuming a null Bond albedo (AB = 0) and isotropic reradiation (f = 1) (Seager et al. 2005).

(f)

Using aR = 2.46Rp(M/Mp)1/3 (Chandrasekar 1987).

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