This page summarises the information held within TEPCat for the transiting planetary system TOI-238b. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2024PASA...41...30M | |
| Date of discovery paper | 2023 / 11 / 2 | y / m / d |
| Data/telescope used for discovery | TESS | |
| Right ascension | 23 16 55.46 | h m s |
| Declination | −18 36 23.9 | d m s |
| Right ascension (decimal) | 349.23108 | degrees |
| Declination (decimal) | -18.60664 | degrees |
| V-band apparent magnitude | 10.75 | mag |
| K-band apparent magnitude | 8.60 | mag |
| Transit duration | 0.06612 ( 1.5869 ) | day hour |
| Transit depth | 0.03 | % |
| Time of mid-transit | 2460205.7524 ± 0.0011 | HJD or BJD |
| Orbital period | 1.2730990 ± 0.0000016 | days |
| Reference for orbital ephemeris | xxx2502078875 |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5059 ± 89 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.114 ± 0.051 | dex |
| Stellar mass | 0.781 +0.040 −0.039 | Msun |
| Stellar radius | 0.756 ± 0.007 | Rsun |
| Stellar logarithmic surface gravity | 4.577 ± 0.021 | c.g.s. |
| Stellar mean density | ρsun g cm-3 | |
| Orbital eccentricity | 0.0 +0.18 −0.0 | |
| Orbital semimajor axis | 0.02120 ± 0.00038 | AU |
| Planetary mass | 0.0106 ± 0.0015 ( 3.37 ± 0.48 ) | Mjup Mearth |
| Planetary radius | 0.1391 ± 0.0042 ( 1.559 ± 0.047 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 5.1 ± 1.2 ( 6.8 ± 1.6 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1378 ± 30 | K |
| Reference of detailed study | arXiv:2502.07887 |
TOI-238b does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/03/12 John Southworth (Keele University, UK)