This page summarises the information held within TEPCat for the transiting planetary system K2-31. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2016AJ....152..132G | |
| Date of discovery paper | 2015 / 11 / 2 | y / m / d |
| Data/telescope used for discovery | K2 | |
| Right ascension | 16 21 45.78 | h m s |
| Declination | −23 32 52.3 | d m s |
| Right ascension (decimal) | 245.44075 | degrees |
| Declination (decimal) | -23.54786 | degrees |
| V-band apparent magnitude | 10.80 | mag |
| K-band apparent magnitude | 8.87 | mag |
| Transit duration | 0.0409 ( 0.982 ) | day hour |
| Transit depth | 0.6 | % |
| Time of mid-transit | 2457191.70889 ± 0.00024 | HJD or BJD |
| Orbital period | 1.257850 ± 0.000002 | days |
| Reference for orbital ephemeris | 2016AJ....152..132G |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5412 ± 34 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.20 ± 0.03 | dex |
| Stellar mass | 1.000 ± 0.064 | Msun |
| Stellar radius | 0.986 ± 0.070 | Rsun |
| Stellar logarithmic surface gravity | 4.44 ± 0.05 | c.g.s. |
| Stellar mean density | ρsun g cm-3 | |
| Orbital eccentricity | 0.0 +0.029 −0.0 | |
| Orbital semimajor axis | 0.0220 ± 0.0018 | AU |
| Planetary mass | 1.856 ± 0.081 ( 590 ± 25 ) | Mjup Mearth |
| Planetary radius | 1.06 ± 0.35 ( 11.9 ± 3.9 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | ρjup g cm-3 | |
| Planetary equilibrium temperature | K | |
| Reference of detailed study | 2016ApJ...823..115D |
K2-31 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2024/09/04 John Southworth (Keele University, UK)