This page summarises the information held within TEPCat for the transiting planetary system K2-140. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2018MNRAS.475.1809G | |
| Date of discovery paper | 2017 / 6 / 22 | y / m / d |
| Data/telescope used for discovery | K2 | |
| Right ascension | 12 32 32.96 | h m s |
| Declination | −09 36 27.5 | d m s |
| Right ascension (decimal) | 188.13733 | degrees |
| Declination (decimal) | -9.60764 | degrees |
| V-band apparent magnitude | 12.62 | mag |
| K-band apparent magnitude | 11.00 | mag |
| Transit duration | 0.190 ( 4.56 ) | day hour |
| Transit depth | 1.3 | % |
| Time of mid-transit | 2457621.13089 ± 0.00010 | HJD or BJD |
| Orbital period | 6.569228 ± 0.000010 | days |
| Reference for orbital ephemeris | 2018RNAAS...2a..22M |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5654 ± 55 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.12 ± 0.045 | dex |
| Stellar mass | 1.005 +0.021 −0.020 | Msun |
| Stellar radius | 0.987 ± 0.011 | Rsun |
| Stellar logarithmic surface gravity | 4.452 +0.010 −0.009 | c.g.s. |
| Stellar mean density | 1.048 ± 0.041 ( 1.479 ± 0.058 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.120 +0.056 −0.046 | |
| Orbital semimajor axis | 0.0591 ± 0.0034 | AU |
| Planetary mass | 1.019 ± 0.070 ( 323 ± 22 ) | Mjup Mearth |
| Planetary radius | 1.095 ± 0.018 ( 12.27 ± 0.20 ) | Rjup Rearth |
| Planetary surface gravity | 21.1 +1.7 −1.5 3.32 +0.03 −0.03 | m/s2 log(cgs) |
| Planetary mean density | 0.726 ± 0.062 ( 0.963 ± 0.082 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1114 ± 34 | K |
| Reference of detailed study | 2018MNRAS.475.1809G |
| Reference | λ (degrees) |
|---|---|
| Rice et al. (2021) | 0.5 ± 9.7 |
Page generated on 2026/01/29 John Southworth (Keele University, UK)