TEPCat: GJ 1214


 

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.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2009Natur.462..891C  
Date of discovery paper 2009 / 12 / 17 y / m / d
Right ascension 17 15 18.94 h m s
Declination +04 57 49.7 d m s
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   arXiv:2107.14732  

 

Physical properties from the most recent detailed study:
 
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 arXiv:2107.14732  

 

GJ 1214 does not have an entry in the catalogue of orbital obliquity measurements.

 

GJ 1214 has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2021/11/15           John Southworth   (Keele University, UK)