|
Exoplanet Name : |
gamma 1 Leo b |
|
Alternate Name : |
|
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.9078 |
(Rjup) |
10.1759 |
(Rearth) |
|
Mass (Mjup / Me): |
63.9000 |
(Mjup) |
20316.2382 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
1.1900 |
(AU) |
1.1900 |
(AU Est.) |
|
Eccentricity : |
0.1440 |
|
Orbital Period(Yrs) |
1.1731 |
|
Orbital Period(Observed/Estimated) |
428.50 |
(Days Obs.) |
427.52 |
(Days Est.) |
|
Surface Gravity (G Earth) |
196.2007 |
|
Star Radiation at Atmospheric Boundary: |
309384.9 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
1052.6 |
(K) |
|
Blackbody T 0.3(K) |
988.5 |
(K) |
|
Blackbody T 0.7(K) |
799.8 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
1251.8 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
1175.5 |
(K) |
|
Size Class: |
Jupiter-size |
|
Mass Class: |
|
|
Detection Type : |
Radial Velocity |
|
Mass Detection : |
|
|
Radius Detection : |
|
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
|
Habitability by Kopparapu: |
Not habitable |
|
Star Name : |
gamma 1 Leo |
|
Alternate Name : |
|
|
Star Distance(LY) : |
125.6 |
|
Stellar Radius(Rsun) : |
31.9 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
1.2 |
(Msun Measured) |
1.2 |
(Msun Estimated) |
|
Star Age : |
0.0 |
(GY) |
|
Temperature : |
4330 |
(K) |
|
Spectral type : |
K0III |
|
UV portion[%]: |
1.0 |
|
Visible portion[%]: |
28.0 |
|
IR portion[%]: |
71.0 |
|
Metalicity : |
-0.5 |
|
Absolute Magnitude: |
-0.9 |
|
Apparent Magnitude: |
2.0 |
|
Right Ascension(RA) |
154.9917 |
|
Declination (DEC) |
19.8414 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
|
|
Discovered by |
|
|
Discovery Paper - Authors |
"Han,nwoo; Lee,..; Kim,..; Mkrtichian,..; Hatzes,..; Valyavin,." |
|
Discovery Paper - Title |
Detection of a planetary companion around the giant star ¥¹¥ò¥»1 Leonis |
|
Discovery Paper - Journal |
0 |
|
Discovery Paper - URL |
0 |
|
SIMBAD LINK |
|
|
Open Exoplanet Database Link |
http://www.openexoplanetcatalogue.com/planet/Gamma%20Leonis%20b/ |
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gamma 1 Leo b
gamma 1 Leo b
gamma 1 Leo b is an exoplanet orbiting the star gamma 1 Leo, located about 125.6 light-years (38.5 pc) away from Solar System. Its discovery was publicly announced on 2009.
The host star gamma 1 Leo has apparent magnitude of 2.0, with absolute magnitude of -0.9. It is 1.2 times more massive and 31.9 times bigger compared with our Sun. The surface temperature is 4330 with its spectral types of K0III
In this planetary system, the extrasolar planet gamma 1 Leo b orbits around the star gamma 1 Leo every 428.5 days with its orbital distance of 1.19 AU ( 178021466.1 km)
(Projected orbit of gamma 1 Leo b around its host star gamma 1 Leo)
The Star gamma 1 Leo 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 12.949 AU ( 1937100788.5 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 17.899 AU ( 2677579514.6 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 27.273 AU ( 4080038633.2 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 40.134 AU ( 6003955583.7 km)
Radiation at Planetary Boundary of gamma 1 Leo b : 309384.89 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star gamma 1 Leo)
Kopparapu Recent Venus for Star gamma 1 Leo distance : 14.382 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star gamma 1 Leo distance : 18.205 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star gamma 1 Leo distance : 17.583 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star gamma 1 Leo distance : 19.317 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star gamma 1 Leo distance : 33.993 AU
Kopparapu Outer Boundary for Early Mars for Star gamma 1 Leo distance : 35.859 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star gamma 1 Leo)
Original Kopparapu Recent Venus for Star gamma 1 Leo distance : 14.190 AU
Original Kopparapu Runaway Greenhouse for Star gamma 1 Leo distance : 18.805 AU
Original Kopparapu Moist Greenhouse for Star gamma 1 Leo distance : 18.776 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star gamma 1 Leo distance : 34.543 AU
Original Kopparapu Outer Boundary for Early Mars for Star gamma 1 Leo distance : 35.924 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star gamma 1 Leo)
(Position in Stellar Map of star gamma 1 Leo and its Exoplanet gamma 1 Leo b)
(Zoomed position in Stellar Map of star gamma 1 Leo and its Exoplanet gamma 1 Leo b (zoom level 3))
(Synthetic Spectrum of star gamma 1 Leo*)
*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
