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 | 0.0365 ( 0.876 ) | day hour |
| Transit depth | 1.4 | % |
| Time of mid-transit | 2455701.413328 ± 0.000063 | HJD or BJD |
| Orbital period | 1.58040433 ± 0.00000013 | days |
| Reference for orbital ephemeris | 2021AJ....162..174C |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 3250 ± 100 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.29 ± 0.12 | dex |
| Stellar mass | 0.178 ± 0.010 | Msun |
| Stellar radius | 0.215 ± 0.008 | Rsun |
| Stellar logarithmic surface gravity | 5.026 ± 0.040 | c.g.s. |
| Stellar mean density | 18.0 +2.5 −2.1 ( 25.4 + 3.5 − 3.0 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 +0.063 −0.0 | |
| Orbital semimajor axis | 0.01411 ± 0.00032 | AU |
| Planetary mass | 0.0257 ± 0.0014 ( 8.17 ± 0.45 ) | Mjup Mearth |
| Planetary radius | 0.2446 +0.0045 −0.0047 ( 2.742 +0.050 −0.053 ) | Rjup Rearth |
| Planetary surface gravity | 10.65 +0.71 −0.67 3.03 +0.03 −0.03 | m/s2 log(cgs) |
| Planetary mean density | 1.66 +0.13 −0.12 ( 2.20 +0.17 −0.16 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 596 ± 19 | K |
| Reference of detailed study | 2021AJ....162..174C |
GJ 1214 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2023/09/01 John Southworth (Keele University, UK)