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 | 0.08421 ( 2.0210 ) | day hour |
| Transit depth | 0.4 | % |
| Time of mid-transit | 2459396.41168 ± 0.00065 | HJD or BJD |
| Orbital period | 7.44628 ± 0.000009 | days |
| Reference for orbital ephemeris | 2024A+A...685A.147G |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 3422 ± 81 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.19 ± 0.05 | dex |
| Stellar mass | 0.368 ± 0.021 | Msun |
| Stellar radius | 0.372 ± 0.018 | Rsun |
| Stellar logarithmic surface gravity | 4.68 ± 0.04 | c.g.s. |
| Stellar mean density | 7.1 ± 1.1 ( 10.0 ± 1.6 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.14 ± 0.09 | |
| Orbital semimajor axis | 0.0534 ± 0.0037 | AU |
| Planetary mass | 0.0170 ± 0.0035 ( 5.4 ± 1.1 ) | Mjup Mearth |
| Planetary radius | 0.225 ± 0.012 ( 2.52 ± 0.13 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 1.39 +0.38 −0.33 ( 1.84 +0.50 −0.44 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 435 ± 15 | K |
| Reference of detailed study | 2024A+A...685A.147G |
TOI-4438 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/08/27 John Southworth (Keele University, UK)