This page summarises the information held within TEPCat for the transiting planetary system K2-137. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2018MNRAS.474.5523S | |
| Date of discovery paper | 2017 / 7 / 17 | y / m / d |
| Data/telescope used for discovery | K2 | |
| Right ascension | 12 27 28.97 | h m s |
| Declination | −06 11 42.8 | d m s |
| Right ascension (decimal) | 186.87071 | degrees |
| Declination (decimal) | -6.19522 | degrees |
| V-band apparent magnitude | 15.50 | mag |
| K-band apparent magnitude | 10.88 | mag |
| Transit duration | 0.0262 ( 0.629 ) | day hour |
| Transit depth | 0.035 | % |
| Time of mid-transit | 2457583.0242 ± 0.0004 | HJD or BJD |
| Orbital period | 0.179715 ± 0.000001 | days |
| Reference for orbital ephemeris | 2018MNRAS.474.5523S |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 3492 ± 70 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.08 ± 0.12 | dex |
| Stellar mass | 0.463 ± 0.052 | Msun |
| Stellar radius | 0.442 ± 0.044 | Rsun |
| Stellar logarithmic surface gravity | 4.815 ± 0.043 | c.g.s. |
| Stellar mean density | ρsun g cm-3 | |
| Orbital eccentricity | 0.0 | |
| Orbital semimajor axis | 0.0058 ± 0.0006 | AU |
| Planetary mass | 0.0 +0.7 −0.0 ( 0 +222 −0 ) | Mjup Mearth |
| Planetary radius | 0.079 ± 0.008 ( 0.886 ± 0.090 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | ρjup g cm-3 | |
| Planetary equilibrium temperature | 1471 ± 47 | K |
| Reference of detailed study | 2018MNRAS.474.5523S |
K2-137 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/03/24 John Southworth (Keele University, UK)