This page summarises the information held within TEPCat for the transiting planetary system TOI-789d. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | arXiv:2609.22945 | |
| Date of discovery paper | 2026 / 9 / 22 | y / m / d |
| Data/telescope used for discovery | TESS | |
| Right ascension | 07 41 04.85 | h m s |
| Declination | −71 18 13.6 | d m s |
| Right ascension (decimal) | 115.27021 | degrees |
| Declination (decimal) | -71.30378 | degrees |
| V-band apparent magnitude | 14.23 | mag |
| K-band apparent magnitude | 8.70 | mag |
| Transit duration | 0.08 ( 1.9 ) | day hour |
| Transit depth | 0.12 | % |
| Time of mid-transit | 2458334.7672 ± 0.0025 | HJD or BJD |
| Orbital period | 12.970689 ± 0.000015 | days |
| Reference for orbital ephemeris | arXiv:2609.22945 |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 3471 ± 64 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.0 ± 0.5 | dex |
| Stellar mass | 0.358 ± 0.009 | Msun |
| Stellar radius | 0.371 ± 0.011 | Rsun |
| Stellar logarithmic surface gravity | 4.85 ± 0.03 | c.g.s. |
| Stellar mean density | 7.2 ± 0.6 ( 10.16 ± 0.85 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 | |
| Orbital semimajor axis | 0.077 ± 0.002 | AU |
| Planetary mass | Mjup Mearth | |
| Planetary radius | 0.1249 ± 0.0053 ( 1.400 ± 0.059 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 | |
| Planetary mean density | ρjup g cm-3 | |
| Planetary equilibrium temperature | 336 ± 8 | K |
| Reference of detailed study | arXiv:2609.22945 |
TOI-789d does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2026/10/04 John Southworth (Keele University, UK)