This page summarises the information held within TEPCat for the transiting planetary system LP 791-18d. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2023Natur.617..701P | |
| Date of discovery paper | 2023 / 5 / 17 | y / m / d |
| Data/telescope used for discovery | TESS | |
| Right ascension | 11 02 45.96 | h m s |
| Declination | −16 24 22.3 | d m s |
| Right ascension (decimal) | 165.69150 | degrees |
| Declination (decimal) | -16.40619 | degrees |
| V-band apparent magnitude | 16.9 | mag |
| K-band apparent magnitude | 10.64 | mag |
| Transit duration | 0.0381 ( 0.914 ) | day hour |
| Transit depth | 0.3 | % |
| Time of mid-transit | 2458552.37773 ± 0.00067 | HJD or BJD |
| Orbital period | 2.75519 ± 0.00045 | days |
| Reference for orbital ephemeris | arXiv:2501.18700 |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 2960 ± 55 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.09 ± 0.19 | dex |
| Stellar mass | 0.139 ± 0.005 | Msun |
| Stellar radius | 0.171 ± 0.018 | Rsun |
| Stellar logarithmic surface gravity | 5.115 ± 0.094 | c.g.s. |
| Stellar mean density | ρsun g cm-3 | |
| Orbital eccentricity | 0.0011 +0.0010 −0.0008 | |
| Orbital semimajor axis | 0.01992 ± 0.00024 | AU |
| Planetary mass | 0.0029 ± 0.0006 ( 0.92 ± 0.19 ) | Mjup Mearth |
| Planetary radius | 0.0921 +0.0039 −0.0038 ( 1.032 +0.044 −0.043 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 3.44 ± 0.84 ( 4.6 ± 1.1 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | K | |
| Reference of detailed study | arXiv:2501.18700 |
LP 791-18d does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/08/27 John Southworth (Keele University, UK)