This page summarises the information held within TEPCat for the transiting planetary system TOI-4138. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2022MNRAS.509.2908M | |
| Date of discovery paper | 2021 / 10 / 4 | y / m / d |
| Data/telescope used for discovery | TESS | |
| Right ascension | 15 10 07.67 | h m s |
| Declination | +72 42 37.2 | d m s |
| Right ascension (decimal) | 227.53196 | degrees |
| Declination (decimal) | 72.71033 | degrees |
| V-band apparent magnitude | 11.81 | mag |
| K-band apparent magnitude | 10.39 | mag |
| Transit duration | 0.1976 ( 4.742 ) | day hour |
| Transit depth | 0.8 | % |
| Time of mid-transit | 2459660.60712 ± 0.00017 | HJD or BJD |
| Orbital period | 3.66003639 ± 0.00000099 | days |
| Reference for orbital ephemeris | 2025MNRAS.543..292S |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5993 +89 −83 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.054 +0.078 −0.070 | dex |
| Stellar mass | 1.187 +0.110 −0.058 | Msun |
| Stellar radius | 1.863 +0.050 −0.054 | Rsun |
| Stellar logarithmic surface gravity | 3.972 +0.044 −0.029 | c.g.s. |
| Stellar mean density | 0.184 +0.023 −0.016 ( 0.260 +0.032 −0.023 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.039 +0.038 −0.023 | |
| Orbital semimajor axis | 0.04922 +0.00140 −0.00081 | AU |
| Planetary mass | 0.634 +0.041 −0.033 ( 201 +13 −10 ) | Mjup Mearth |
| Planetary radius | 1.540 +0.043 −0.045 ( 17.26 + 0.48 − 0.50 ) | Rjup Rearth |
| Planetary surface gravity | 6.62 +0.59 −0.47 2.82 +0.04 −0.03 | m/s2 log(cgs) |
| Planetary mean density | 0.162 +0.018 −0.014 ( 0.215 +0.024 −0.019 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1775 +22 −25 | K |
| Reference of detailed study | 2025MNRAS.543..292S |
TOI-4138 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2026/01/29 John Southworth (Keele University, UK)