|
Exoplanet Name : |
LHS 2397a B |
|
Alternate Name : |
2MASS J11214924-1313084 B |
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.9078 |
(Rjup) |
10.1759 |
(Rearth) |
|
Mass (Mjup / Me): |
64.0000 |
(Mjup) |
20348.0320 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
3.0900 |
(AU) |
3.0900 |
(AU Est.) |
|
Eccentricity : |
0.3500 |
|
Orbital Period(Yrs) |
14.2200 |
|
Orbital Period(Observed/Estimated) |
5194.00 |
(Days Obs.) |
6849.31 |
(Days Est.) |
|
Surface Gravity (G Earth) |
196.5077 |
|
Star Radiation at Atmospheric Boundary: |
0.0 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
20.0 |
(K) |
|
Blackbody T 0.3(K) |
18.8 |
(K) |
|
Blackbody T 0.7(K) |
15.2 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
23.7 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
22.3 |
(K) |
|
Size Class: |
Jupiter-size |
|
Mass Class: |
|
|
Detection Type : |
Imaging |
|
Mass Detection : |
Spectrum |
|
Radius Detection : |
|
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
|
Habitability by Kopparapu: |
Not habitable |
|
Star Name : |
LHS 2397a A |
|
Alternate Name : |
2MASS J11214924-1313084 |
|
Star Distance(LY) : |
46.9 |
|
Stellar Radius(Rsun) : |
0.1 |
(Rsun Estimated) |
|
Stellar Mass(Msun) : |
0.1 |
(Msun Measured) |
0.1 |
(Msun Estimated) |
|
Star Age : |
1.5 |
(GY) |
|
Temperature : |
2580 |
(K) |
|
Spectral type : |
M8V |
|
UV portion[%]: |
0.4 |
|
Visible portion[%]: |
2.0 |
|
IR portion[%]: |
97.6 |
|
Metalicity : |
0.0 |
|
Absolute Magnitude: |
18.8 |
|
Apparent Magnitude: |
19.6 |
|
Right Ascension(RA) |
170.4549 |
|
Declination (DEC) |
-13.2191 |
|
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=LHS+2397a+&submit=SIMBAD+search |
|
Open Exoplanet Database Link |
|
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LHS 2397a B
LHS 2397a B
LHS 2397a B is an exoplanet orbiting the star LHS 2397a A, located about 46.9 light-years (14.4 pc) away from Solar System. Its discovery was publicly announced on 2009.
The host star LHS 2397a A has apparent magnitude of 19.6, with absolute magnitude of 18.8. It is 0.1 times more massive and 0.1 times bigger compared with our Sun. The surface temperature is 2580 with its spectral types of M8V
In this planetary system, the extrasolar planet LHS 2397a B orbits around the star LHS 2397a A every 5194.0 days with its orbital distance of 3.09 AU ( 462257420.5 km)
(Projected orbit of LHS 2397a B around its host star LHS 2397a A)
The Star LHS 2397a A 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.012 AU ( 1809920.4 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.017 AU ( 2501783.0 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 0.025 AU ( 3812163.7 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 0.037 AU ( 5609765.9 km)
Radiation at Planetary Boundary of LHS 2397a B : 0.04 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star LHS 2397a A)
Kopparapu Recent Venus for Star LHS 2397a A distance : 0.014 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star LHS 2397a A distance : 0.017 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star LHS 2397a A distance : 0.017 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star LHS 2397a A distance : 0.019 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star LHS 2397a A distance : 0.035 AU
Kopparapu Outer Boundary for Early Mars for Star LHS 2397a A distance : 0.037 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star LHS 2397a A)
Original Kopparapu Recent Venus for Star LHS 2397a A distance : 0.014 AU
Original Kopparapu Runaway Greenhouse for Star LHS 2397a A distance : 0.018 AU
Original Kopparapu Moist Greenhouse for Star LHS 2397a A distance : 0.018 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star LHS 2397a A distance : 0.036 AU
Original Kopparapu Outer Boundary for Early Mars for Star LHS 2397a A distance : 0.038 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star LHS 2397a A)
(Position in Stellar Map of star LHS 2397a A and its Exoplanet LHS 2397a B)
(Zoomed position in Stellar Map of star LHS 2397a A and its Exoplanet LHS 2397a B (zoom level 3))
(Synthetic Spectrum of star LHS 2397a A*)
*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
