This page summarises the information held within TEPCat for the transiting planetary system GJ 238. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2024AJ....167..283T | |
| Date of discovery paper | 2024 / 6 / 24 | y / m / d |
| Data/telescope used for discovery | TESS | |
| Right ascension | 06 33 49.15 | h m s |
| Declination | −58 31 29.7 | d m s |
| Right ascension (decimal) | 98.45479 | degrees |
| Declination (decimal) | -58.52492 | degrees |
| V-band apparent magnitude | 11.57 | mag |
| K-band apparent magnitude | 7.03 | mag |
| Transit duration | 0.0516 ( 1.238 ) | day hour |
| Transit depth | 0.1 | % |
| Time of mid-transit | 2458326.98222 ± 0.00067 | HJD or BJD |
| Orbital period | 1.7446999 ± 0.0000019 | days |
| Reference for orbital ephemeris | 2024AJ....167..283T |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 3485 ± 140 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.15 ± 0.10 | dex |
| Stellar mass | 0.4193 +0.0095 −0.0098 | Msun |
| Stellar radius | 0.4314 +0.0075 −0.0071 | Rsun |
| Stellar logarithmic surface gravity | c.g.s. | |
| Stellar mean density | ρsun g cm-3 | |
| Orbital eccentricity | ||
| Orbital semimajor axis | 0.02123 +0.00016 −0.00017 | AU |
| Planetary mass | Mjup Mearth | |
| Planetary radius | 0.0505 ± 0.0012 ( 0.566 ± 0.013 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | ρjup g cm-3 | |
| Planetary equilibrium temperature | 758 +16 −15 | K |
| Reference of detailed study | 2024AJ....167..283T |
GJ 238 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/03/17 John Southworth (Keele University, UK)