This page summarises the information held within TEPCat for the transiting planetary system Kepler-138c. Please see here for descriptions of the quantities given below.
Quantity | Value | Unit |
---|---|---|
Reference of discovery paper | 2014ApJ...784...28K | |
Date of discovery paper | 2014 / 1 / 7 | y / m / d |
Right ascension | 19 21 31.56 | h m s |
Declination | +43 17 34.8 | d m s |
V-band apparent magnitude | 13.34 | mag |
K-band apparent magnitude | 9.51 | mag |
Transit duration | 0.08 ( 1.9 ) | day hour |
Transit depth | 0.07 | % |
Time of mid-transit | 2454955.72666 ± 0.00049 | HJD or BJD |
Orbital period | 13.7811977 ± 0.0000075 | days |
Reference for orbital ephemeris | 2017AJ....153..267M |
Quantity | Value | Unit |
---|---|---|
Stellar effective temperature | 3933 ± 37 | K |
Stellar metal abundance ([Fe/H] or [M/H]) | −0.127 ± 0.086 | dex |
Stellar mass | 0.551 ± 0.068 | Msun |
Stellar radius | 0.582 ± 0.045 | Rsun |
Stellar logarithmic surface gravity | 4.647 ± 0.059 | c.g.s. |
Stellar mean density | 2.78 +0.57 −0.47 ( 3.92 +0.80 −0.66 ) | ρsun g cm-3 |
Orbital eccentricity | 0.0110 +0.0069 −0.0036 | |
Orbital semimajor axis | 0.0922 ± 0.0040 | AU |
Planetary mass | 0.0164 ± 0.0038 ( 5.2 ± 1.2 ) | Mjup Mearth |
Planetary radius | 0.149 ± 0.013 ( 1.67 ± 0.15 ) | Rjup Rearth |
Planetary surface gravity | 18.4 +4.3 −4.1 3.26 +0.09 −0.11 | m/s2 log(cgs) |
Planetary mean density | 4.6 +1.4 −1.1 ( 6.1 +1.9 −1.5 ) | ρjup g cm-3 |
Planetary equilibrium temperature | K | |
Reference of detailed study | arXiv:1805.12520 |
Kepler-138c does not have an entry in the catalogue of orbital obliquity measurements.
Kepler-138c has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.
Page generated on 2021/01/04 John Southworth (Keele University, UK)