|
Exoplanet Name : |
GJ 1214 b |
|
Alternate Name : |
|
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.2446 |
(Rjup) |
2.7421 |
(Rearth) |
|
Mass (Mjup / Me): |
0.0257 |
(Mjup) |
8.1742 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
0.0141 |
(AU) |
0.0141 |
(AU Est.) |
|
Eccentricity : |
0.2700 |
|
Orbital Period(Yrs) |
0.0043 |
|
Orbital Period(Observed/Estimated) |
1.58 |
(Days Obs.) |
1.58 |
(Days Est.) |
|
Surface Gravity (G Earth) |
1.0872 |
|
Star Radiation at Atmospheric Boundary: |
24095.4 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
556.1 |
(K) |
|
Blackbody T 0.3(K) |
522.2 |
(K) |
|
Blackbody T 0.7(K) |
422.5 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
661.3 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
621.0 |
(K) |
|
Size Class: |
sub-Neptune-size |
|
Mass Class: |
|
|
Detection Type : |
Primary Transit |
|
Mass Detection : |
Radial Velocity |
|
Radius Detection : |
Primary Transit |
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
|
Habitability by Kopparapu: |
Not habitable |
|
Star Name : |
GJ 1214 |
|
Alternate Name : |
|
|
Star Distance(LY) : |
47.8 |
|
Stellar Radius(Rsun) : |
0.2 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
0.1 |
(Msun Measured) |
0.2 |
(Msun Estimated) |
|
Star Age : |
6.0 |
(GY) |
|
Temperature : |
3026 |
(K) |
|
Spectral type : |
M |
|
UV portion[%]: |
0.1 |
|
Visible portion[%]: |
4.9 |
|
IR portion[%]: |
95.0 |
|
Metalicity : |
0.4 |
|
Absolute Magnitude: |
13.9 |
|
Apparent Magnitude: |
14.7 |
|
Right Ascension(RA) |
258.8289 |
|
Declination (DEC) |
4.9639 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
|
|
Discovered by |
|
|
Discovery Paper - Authors |
|
|
Discovery Paper - Title |
|
|
Discovery Paper - Journal |
|
|
Discovery Paper - URL |
|
|
SIMBAD LINK |
http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=GJ+1214+&submit=SIMBAD+search |
|
Open Exoplanet Database Link |
|
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/
GJ 1214 b
GJ 1214 b
GJ 1214 b is an exoplanet orbiting the star GJ 1214, located about 47.8 light-years (14.6 pc) away from Solar System. Its discovery was publicly announced on 2009.
The host star GJ 1214 has apparent magnitude of 14.7, with absolute magnitude of 13.9. It is 0.1 times more massive and 0.2 times bigger compared with our Sun. The surface temperature is 3026 with its spectral types of M
In this planetary system, the extrasolar planet GJ 1214 b orbits around the star GJ 1214 every 1.6 days with its orbital distance of 0.01 AU ( 2110826.0 km)
(Projected orbit of GJ 1214 b around its host star GJ 1214)
The Star GJ 1214 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.043 AU ( 6409877.2 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.059 AU ( 8860125.4 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 0.090 AU ( 13500870.4 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 0.133 AU ( 19867122.2 km)
Radiation at Planetary Boundary of GJ 1214 b : 24095.39 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star GJ 1214)
Kopparapu Recent Venus for Star GJ 1214 distance : 0.049 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star GJ 1214 distance : 0.062 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star GJ 1214 distance : 0.059 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star GJ 1214 distance : 0.065 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 1214 distance : 0.123 AU
Kopparapu Outer Boundary for Early Mars for Star GJ 1214 distance : 0.129 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star GJ 1214)
Original Kopparapu Recent Venus for Star GJ 1214 distance : 0.048 AU
Original Kopparapu Runaway Greenhouse for Star GJ 1214 distance : 0.064 AU
Original Kopparapu Moist Greenhouse for Star GJ 1214 distance : 0.064 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 1214 distance : 0.125 AU
Original Kopparapu Outer Boundary for Early Mars for Star GJ 1214 distance : 0.130 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star GJ 1214)
(Position in Stellar Map of star GJ 1214 and its Exoplanet GJ 1214 b)
(Zoomed position in Stellar Map of star GJ 1214 and its Exoplanet GJ 1214 b (zoom level 3))
(Synthetic Spectrum of star GJ 1214*)
*Yamashiki YA et al. 2019 ApJ 881 114
MUSCLES Paper I - France et al. 2016 ApJ 820 89
MUSCLES Paper II- Youngblood et al. 2016 ApJ 824 101
MUSCLES Paper III- Loyd et al. 2016 ApJ 824 102
