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Exoplanet Name : |
G 9-40 b |
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Alternate Name : |
"2MASS J08585232+2104344 b, EPIC 212048748 b, EPIC 212048748.01, K2-313 b, LSPM J0858+2104 b, TIC 203214081 b, WISE J085 |
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.1700 |
(Rjup) |
1.9055 |
(Rearth) |
|
Mass (Mjup / Me): |
0.0130 |
(Mjup) |
4.1332 |
(Mearth) |
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Semi Major Axis / Orbital Distance Calculated |
0.0418 |
(AU) |
0.0418 |
(AU Est.) |
|
Eccentricity : |
0.0000 |
|
Orbital Period(Yrs) |
0.0157 |
|
Orbital Period(Observed/Estimated) |
5.75 |
(Days Obs.) |
5.80 |
(Days Est.) |
|
Surface Gravity (G Earth) |
1.1383 |
|
Star Radiation at Atmospheric Boundary: |
8474.6 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
428.2 |
(K) |
|
Blackbody T 0.3(K) |
402.1 |
(K) |
|
Blackbody T 0.7(K) |
325.4 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
509.2 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
478.2 |
(K) |
|
Size Class: |
super-Earth-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 : |
G 9-40 |
|
Alternate Name : |
"2MASS J08585232+2104344, EPIC 212048748, K2-313, LSPM J0858+2104, TIC 203214081, WISE J085852.46+210430.8" |
|
Star Distance(LY) : |
91.1 |
|
Stellar Radius(Rsun) : |
0.3 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
0.3 |
(Msun Measured) |
0.3 |
(Msun Estimated) |
|
Star Age : |
9.9 |
(GY) |
|
Temperature : |
3348 |
(K) |
|
Spectral type : |
M2.5 V |
|
UV portion[%]: |
0.2 |
|
Visible portion[%]: |
10.9 |
|
IR portion[%]: |
88.9 |
|
Metalicity : |
0.0 |
|
Absolute Magnitude: |
11.6 |
|
Apparent Magnitude: |
13.8 |
|
Right Ascension(RA) |
134.7181 |
|
Declination (DEC) |
21.0760 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
|
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Discovered by |
|
|
Discovery Paper - Authors |
|
|
Discovery Paper - Title |
|
|
Discovery Paper - Journal |
|
|
Discovery Paper - URL |
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|
SIMBAD LINK |
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|
Open Exoplanet Database Link |
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G 9-40 b
G 9-40 b
G 9-40 b is an exoplanet orbiting the star G 9-40, located about 91.1 light-years (27.9 pc) away from Solar System. Its discovery was publicly announced on 2019.
The host star G 9-40 has apparent magnitude of 13.8, with absolute magnitude of 11.6. It is 0.3 times more massive and 0.3 times bigger compared with our Sun. The surface temperature is 3348 with its spectral types of M2.5 V
In this planetary system, the extrasolar planet G 9-40 b orbits around the star G 9-40 every 5.7 days with its orbital distance of 0.04 AU ( 6253191.0 km)
(Projected orbit of G 9-40 b around its host star G 9-40)
The Star G 9-40 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.075 AU ( 11261356.4 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.104 AU ( 15566137.5 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 0.159 AU ( 23719348.8 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 0.233 AU ( 34904060.9 km)
Radiation at Planetary Boundary of G 9-40 b : 8474.57 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star G 9-40)
Kopparapu Recent Venus for Star G 9-40 distance : 0.085 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star G 9-40 distance : 0.108 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star G 9-40 distance : 0.104 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star G 9-40 distance : 0.115 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star G 9-40 distance : 0.211 AU
Kopparapu Outer Boundary for Early Mars for Star G 9-40 distance : 0.223 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star G 9-40)
Original Kopparapu Recent Venus for Star G 9-40 distance : 0.085 AU
Original Kopparapu Runaway Greenhouse for Star G 9-40 distance : 0.112 AU
Original Kopparapu Moist Greenhouse for Star G 9-40 distance : 0.112 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star G 9-40 distance : 0.215 AU
Original Kopparapu Outer Boundary for Early Mars for Star G 9-40 distance : 0.223 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star G 9-40)
(Position in Stellar Map of star G 9-40 and its Exoplanet G 9-40 b)
(Zoomed position in Stellar Map of star G 9-40 and its Exoplanet G 9-40 b (zoom level 3))
(Synthetic Spectrum of star G 9-40*)
*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
