This page summarises the information held within TEPCat for the transiting planetary system GJ 1214. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2009Natur.462..891C | |
| Date of discovery paper | 2009 / 12 / 17 | y / m / d |
| Data/telescope used for discovery | MEarth | |
| Right ascension | 17 15 18.94 | h m s |
| Declination | +04 57 49.7 | d m s |
| Right ascension (decimal) | 258.82892 | degrees |
| Declination (decimal) | 4.96381 | degrees |
| V-band apparent magnitude | 14.67 | mag |
| K-band apparent magnitude | 8.78 | mag |
| Transit duration | 0.03624 ( 0.8698 ) | day hour |
| Transit depth | 1.7 | % |
| Time of mid-transit | 2459639.781262 ± 0.000009 | HJD or BJD |
| Orbital period | 1.580404531 ± 0.000000018 | days |
| Reference for orbital ephemeris | 2024ApJ...963L..37M |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 3101 ± 43 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.24 ± 0.11 | dex |
| Stellar mass | 0.1820 +0.0042 −0.0041 | Msun |
| Stellar radius | 0.2162 +0.0025 −0.0024 | Rsun |
| Stellar logarithmic surface gravity | 5.0286 +0.0078 −0.0088 | c.g.s. |
| Stellar mean density | 18.00 +0.44 −0.50 ( 25.40 + 0.62 − 0.71 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0062 +0.0079 −0.0044 | |
| Orbital semimajor axis | 0.01505 ± 0.00011 | AU |
| Planetary mass | 0.0265 ± 0.0011 ( 8.42 ± 0.35 ) | Mjup Mearth |
| Planetary radius | 0.2438 +0.0029 −0.0028 ( 2.733 +0.033 −0.031 ) | Rjup Rearth |
| Planetary surface gravity | 11.04 +0.49 −0.47 3.04 +0.02 −0.02 | m/s2 log(cgs) |
| Planetary mean density | 1.70 ± 0.08 ( 2.26 ± 0.11 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 567 ± 8 | K |
| Reference of detailed study | 2024ApJ...963L..37M |
GJ 1214 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2024/09/04 John Southworth (Keele University, UK)