This page summarises the information held within TEPCat for the transiting planetary system LP 791-18c. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2019ApJ...883L..16C | |
| Date of discovery paper | 2019 / 6 / 25 | 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 | 0.0503 ( 1.207 ) | day hour |
| Transit depth | 0.4 | % |
| Time of mid-transit | 2458552.50935 ± 0.00011 | HJD or BJD |
| Orbital period | 4.98987 ± 0.00007 | 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 | 0.0001 ± 0.0001 | |
| Orbital semimajor axis | 0.02961 +0.00035 −0.00036 | AU |
| Planetary mass | 0.0225 ± 0.0020 ( 7.15 ± 0.64 ) | Mjup Mearth |
| Planetary radius | 0.222 ± 0.009 ( 2.49 ± 0.10 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 1.93 ± 0.29 ( 2.56 ± 0.38 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 370 ± 30 | K |
| Reference of detailed study | 2019ApJ...883L..16C |
LP 791-18c does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/08/27 John Southworth (Keele University, UK)