Planet GJ 1214 b

Name GJ 1214 b
Discovered in 2009
Mass 0.0203253311519 (± 0.00311487273071) MJ
Semi-major axis 0.01411 (± 0.00032) AU
Orbital period 1.58040482 (± 1.8e-07) day
Eccentricity 0.27 ( -0.27 +0.0 )
ω
Tperi
Radius 0.238201870286 (± 1.07057020353) RJ
Inclination 88.17 (± 0.54) deg;
Update May 21, 2014
Detection Method Primary Transit
Mass Detection Method
Radius Detection method
Molecules detected
Primary transit 2455391.65402 (± 2.8e-05) JD
Secondary transit
Anomaly angle
impact Parameter b
Time Vr=0
Velocity Semiamplitude K
Calculated temperature
Measured temperature
Hottest point longitute
Geometric albedo
Surface gravity log(g/gH)
Alternate Names

Observability Predictor

Remarks

3 Dec 2010: The planet may transit spots of the stellar surface (Berta et al. 2010)

Star

Name GJ 1214
Distance 13.0 pc
Spectral type M
Apparent magnitude V 14.71
Mass 0.15 (± 0.011) MSun
Age 6.0 ( -3.0 +3.0 ) Gyr
Effective temperature 3026.0 (± 150.0) K
Radius 0.216 (± 0.012) RSun
Metallicity [Fe/H] 0.39 (± 0.15)
Detected Disc
Magnetic Field
RA2000 17:15:19.0
Dec2000 +04:57:50
Alternate Names
Planetary system 1 planet

More data


Related publications

Transit spectroscopy with JWST: Systematics, starspots and stitching
2015 BARSTOW J., AIGRAIN S., IRWIN P., KENDREW S. & FLETCHER L.
MNRAS, accepted
arxiv  

Understanding the Mass-Radius Relation for Sub-Neptunes: Radius as a Proxy for Composition
2013 LOPEZ E. & FORTNEY J.
ApJ, 792, 1
arxiv   paper  

The Transiting System GJ1214: High-Precision Defocused Transit Observations and a Search for Evidence of Transit Timing Variation
2012 HARPSOE K., HARDIS S., HINSE T., JOERGENSEN U., MANCINI L. & 30 additional authors
Astron. & Astrophys., 549, A10
paper   arxiv

A super-Earth transiting a nearby low mass star
2009 CHARBONNEAU D., BERTA Z., IRWIN J., BURKE Ch., NUTZMAN Ph., BUCHHAVE L., LOVIS Ch., BONFILS X., LATHAM D., UDRY S., MURRAY-CLAY R., HOLMAN M., FALCO E., WINN J., QUELOZ D., PEPE F., MAYOR M., DELFOSSE X. & FORVEILLE Th.
Nature, 462, 891
paper   astro-ph