This page summarises the information held within TEPCat for the transiting planetary system K2-38b. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2016ApJ...827...78S | |
| Date of discovery paper | 2015 / 12 / 1 | y / m / d |
| Data/telescope used for discovery | K2 | |
| Right ascension | 16 00 08.06 | h m s |
| Declination | −23 11 21.4 | d m s |
| Right ascension (decimal) | 240.03358 | degrees |
| Declination (decimal) | -23.18928 | degrees |
| V-band apparent magnitude | 11.39 | mag |
| K-band apparent magnitude | 9.47 | mag |
| Transit duration | 0.12 ( 2.9 ) | day hour |
| Transit depth | 0.2 | % |
| Time of mid-transit | 2456896.8786 ± 0.0054 | HJD or BJD |
| Orbital period | 4.01593 ± 0.00050 | days |
| Reference for orbital ephemeris | 2016ApJ...827...78S |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5757 ± 60 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.28 ± 0.04 | dex |
| Stellar mass | 1.03 +0.04 −0.02 | Msun |
| Stellar radius | 1.06 +0.09 −0.06 | Rsun |
| Stellar logarithmic surface gravity | 4.38 ± 0.11 | c.g.s. |
| Stellar mean density | ρsun g cm-3 | |
| Orbital eccentricity | 0.197 +0.061 −0.060 | |
| Orbital semimajor axis | 0.04994 +0.00048 −0.00049 | AU |
| Planetary mass | 0.0230 +0.0035 −0.0031 ( 7.31 +1.11 −0.99 ) | Mjup Mearth |
| Planetary radius | 0.137 ± 0.012 ( 1.54 ± 0.13 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 8.3 +3.1 −2.1 ( 11.0 + 4.1 − 2.8 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1266 +44 −50 | K |
| Reference of detailed study | 2020A+A...641A..92T |
K2-38b does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/01/01 John Southworth (Keele University, UK)