This page summarises the information held within TEPCat for the transiting planetary system WASP-31. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2011A+A...531A..60A | |
| Date of discovery paper | 2010 / 11 / 25 | y / m / d |
| Data/telescope used for discovery | WASP | |
| Right ascension | 11 17 45.35 | h m s |
| Declination | −19 03 17.3 | d m s |
| Right ascension (decimal) | 169.43896 | degrees |
| Declination (decimal) | -19.05481 | degrees |
| V-band apparent magnitude | 11.94 | mag |
| K-band apparent magnitude | 10.65 | mag |
| Transit duration | 0.1103 ( 2.647 ) | day hour |
| Transit depth | 1.6 | % |
| Time of mid-transit | 2456088.4374 ± 0.0001 | HJD or BJD |
| Orbital period | 3.4058853 ± 0.0000005 | days |
| Reference for orbital ephemeris | 2022ExA....53..547K |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 6175 ± 70 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.20 ± 0.09 | dex |
| Stellar mass | 1.163 ± 0.026 | Msun |
| Stellar radius | 1.252 ± 0.033 | Rsun |
| Stellar logarithmic surface gravity | 4.308 ± 0.020 | c.g.s. |
| Stellar mean density | 0.592 ± 0.042 ( 0.835 ± 0.059 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 | |
| Orbital semimajor axis | 0.04659 ± 0.00035 | AU |
| Planetary mass | 0.478 ± 0.029 ( 151.95 ± 9.22 ) | Mjup Mearth |
| Planetary radius | 1.549 ± 0.050 ( 17.36 ± 0.56 ) | Rjup Rearth |
| Planetary surface gravity | 4.56 ± 0.38 2.66 ± 0.03 | m/s2 log(cgs) |
| Planetary mean density | 0.129 ± 0.014 ( 0.171 ± 0.019 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1575 ± 32 | K |
| Reference of detailed study | 2011A+A...531A..60A |
| Reference | λ (degrees) |
|---|---|
| Brown et al. (2012) | 2.8 ± 3.1 |
| Albrecht et al. (2012) | −6 ± 6 |
Page generated on 2025/03/24 John Southworth (Keele University, UK)