This page summarises the information held within TEPCat for the transiting planetary system GJ 1252. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2020ApJ...890L...7S | |
| Date of discovery paper | 2019 / 12 / 12 | y / m / d |
| Data/telescope used for discovery | TESS | |
| Right ascension | 20 27 42.08 | h m s |
| Declination | −56 27 25.2 | d m s |
| Right ascension (decimal) | 306.92533 | degrees |
| Declination (decimal) | -56.45700 | degrees |
| V-band apparent magnitude | 12.19 | mag |
| K-band apparent magnitude | 7.92 | mag |
| Transit duration | 0.0302 ( 0.725 ) | day hour |
| Transit depth | 0.08 | % |
| Time of mid-transit | 2458668.09748 ± 0.00032 | HJD or BJD |
| Orbital period | 0.51824160 ± 0.00000069 | days |
| Reference for orbital ephemeris | 2022ApJ...937L..17C |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 3458 +140 −133 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.1 ± 0.1 | dex |
| Stellar mass | 0.381 ± 0.019 | Msun |
| Stellar radius | 0.391 ± 0.020 | Rsun |
| Stellar logarithmic surface gravity | c.g.s. | |
| Stellar mean density | ρsun g cm-3 | |
| Orbital eccentricity | 0.0 | |
| Orbital semimajor axis | 0.00916 ± 0.00076 | AU |
| Planetary mass | 0.0042 ± 0.0009 ( 1.34 ± 0.29 ) | Mjup Mearth |
| Planetary radius | 0.1053 ± 0.0070 ( 1.180 ± 0.078 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | ρjup g cm-3 | |
| Planetary equilibrium temperature | 997 +53 −49 | K |
| Reference of detailed study | 2022ApJ...937L..17C |
GJ 1252 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/03/17 John Southworth (Keele University, UK)