This page summarises the information held within TEPCat for the transiting planetary system TOI-178g. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2021A+A...649A..26L | |
| Date of discovery paper | 2021 / 1 / 25 | y / m / d |
| Data/telescope used for discovery | TESS | |
| Right ascension | 00 29 12.30 | h m s |
| Declination | −30 27 13.5 | d m s |
| Right ascension (decimal) | 7.30125 | degrees |
| Declination (decimal) | -30.45375 | degrees |
| V-band apparent magnitude | 11.95 | mag |
| K-band apparent magnitude | 8.76 | mag |
| Transit duration | 0.0924 ( 2.218 ) | day hour |
| Transit depth | 0.16 | % |
| Time of mid-transit | 2458748.0302 ± 0.0020 | HJD or BJD |
| Orbital period | 20.71663 ± 0.00031 | days |
| Reference for orbital ephemeris | 2024A+A...688A.211L |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 4316 ± 70 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.23 ± 0.05 | dex |
| Stellar mass | 0.647 +0.030 −0.029 | Msun |
| Stellar radius | 0.662 ± 0.010 | Rsun |
| Stellar logarithmic surface gravity | 4.45 ± 0.15 | c.g.s. |
| Stellar mean density | 2.23 ± 0.14 ( 3.15 ± 0.20 ) | ρsun g cm-3 |
| Orbital eccentricity | ||
| Orbital semimajor axis | 0.1276 +0.0015 −0.0017 | AU |
| Planetary mass | 0.0139 ± 0.0012 ( 4.42 ± 0.38 ) | Mjup Mearth |
| Planetary radius | 0.2622 +0.0051 −0.0049 ( 2.939 +0.057 −0.055 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 0.69 +0.27 −0.28 ( 0.92 +0.36 −0.37 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 470 ± 10 | K |
| Reference of detailed study | 2024A+A...688A.211L |
TOI-178g does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/05/13 John Southworth (Keele University, UK)