This page summarises the information held within TEPCat for the transiting planetary system TOI-4438. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2024A+A...685A.147G | |
| Date of discovery paper | 2024 / 3 / 18 | y / m / d |
| Data/telescope used for discovery | TESS | |
| Right ascension | 18 01 16.14 | h m s |
| Declination | +35 35 41.6 | d m s |
| Right ascension (decimal) | 270.31725 | degrees |
| Declination (decimal) | 35.59489 | degrees |
| V-band apparent magnitude | 13.69 | mag |
| K-band apparent magnitude | 8.87 | mag |
| Transit duration | 0.08000 ( 1.9200 ) | day hour |
| Transit depth | 0.4 | % |
| Time of mid-transit | 2459396.41168 ± 0.00065 | HJD or BJD |
| Orbital period | 7.446295 ± 0.0000006 | days |
| Reference for orbital ephemeris | arXiv:2607.13333 |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 3501 ± 70 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.07 ± 0.10 | dex |
| Stellar mass | 0.350 ± 0.018 | Msun |
| Stellar radius | 0.355 ± 0.014 | Rsun |
| Stellar logarithmic surface gravity | 4.67 ± 0.11 | c.g.s. |
| Stellar mean density | ρsun g cm-3 | |
| Orbital eccentricity | 0.07 +0.07 −0.05 | |
| Orbital semimajor axis | 0.0523 ± 0.0009 | AU |
| Planetary mass | 0.0129 +0.0013 −0.0012 ( 4.10 +0.41 −0.38 ) | Mjup Mearth |
| Planetary radius | 0.214 ± 0.008 ( 2.399 ± 0.090 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 1.24 +0.20 −0.17 ( 1.64 +0.27 −0.23 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 446 +8 −9 | K |
| Reference of detailed study | arXiv:2607.13333 |
TOI-4438 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2026/07/16 John Southworth (Keele University, UK)