This page summarises the information held within TEPCat for the transiting planetary system GJ 357. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2019A+A...628A..39L | |
| Date of discovery paper | 2019 / 4 / 30 | y / m / d |
| Data/telescope used for discovery | TESS | |
| Right ascension | 09 36 01.64 | h m s |
| Declination | −21 39 38.9 | d m s |
| Right ascension (decimal) | 144.00683 | degrees |
| Declination (decimal) | -21.66081 | degrees |
| V-band apparent magnitude | 10.91 | mag |
| K-band apparent magnitude | 6.48 | mag |
| Transit duration | 0.053 ( 1.27 ) | day hour |
| Transit depth | 0.1 | % |
| Time of mid-transit | 2458517.9994 ± 0.0001 | HJD or BJD |
| Orbital period | 3.93086 ± 0.00004 | days |
| Reference for orbital ephemeris | 2019MNRAS.490.5585J |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 3505 ± 51 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.12 ± 0.16 | dex |
| Stellar mass | 0.342 ± 0.011 | Msun |
| Stellar radius | 0.337 ± 0.015 | Rsun |
| Stellar logarithmic surface gravity | 4.94 ± 0.07 | c.g.s. |
| Stellar mean density | 9.2 ± 1.1 ( 13.0 ± 1.6 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 | |
| Orbital semimajor axis | 0.033 ± 0.001 | AU |
| Planetary mass | 0.0066 ± 0.0010 ( 2.10 ± 0.32 ) | Mjup Mearth |
| Planetary radius | 0.1041 +0.0033 −0.0032 ( 1.167 +0.037 −0.036 ) | Rjup Rearth |
| Planetary surface gravity | 11.7 +2.6 −2.3 3.07 +0.09 −0.10 | m/s2 log(cgs) |
| Planetary mean density | 1.81 +0.34 −0.31 ( 2.40 +0.45 −0.41 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 531 +12 −11 | K |
| Reference of detailed study | 2019MNRAS.490.5585J |
GJ 357 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/01/01 John Southworth (Keele University, UK)