|
Exoplanet Name : |
G 204-39 b |
|
Alternate Name : |
"GJ 4040 b, LHS 3343 b, BDK 9 b" |
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.9078 |
(Rjup) |
10.1759 |
(Rearth) |
|
Mass (Mjup / Me): |
29.0000 |
(Mjup) |
9220.2020 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
2685.0000 |
(AU) |
2685.0000 |
(AU Est.) |
|
Eccentricity : |
0.0000 |
|
Orbital Period(Yrs) |
0.0000 |
|
Orbital Period(Observed/Estimated) |
0.00 |
(Days Obs.) |
84694539.16 |
(Days Est.) |
|
Surface Gravity (G Earth) |
89.0426 |
|
Star Radiation at Atmospheric Boundary: |
0.0 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
1.9 |
(K) |
|
Blackbody T 0.3(K) |
1.8 |
(K) |
|
Blackbody T 0.7(K) |
1.5 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
2.3 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
2.1 |
(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 : |
G 204-39 |
|
Alternate Name : |
"HIP 87938, 2MASS J17575096+4635182, GJ 4040, LHS 3343, BDK 9" |
|
Star Distance(LY) : |
45.6 |
|
Stellar Radius(Rsun) : |
0.4 |
(Rsun Estimated) |
|
Stellar Mass(Msun) : |
0.4 |
(Msun Measured) |
0.0 |
(Msun Estimated) |
|
Star Age : |
1.0 |
(GY) |
|
Temperature : |
3500 |
(K) |
|
Spectral type : |
M3V |
|
UV portion[%]: |
0.2 |
|
Visible portion[%]: |
10.4 |
|
IR portion[%]: |
89.3 |
|
Metalicity : |
0.0 |
|
Absolute Magnitude: |
10.9 |
|
Apparent Magnitude: |
11.6 |
|
Right Ascension(RA) |
269.4624 |
|
Declination (DEC) |
46.5886 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
|
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Discovered by |
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|
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 204-39 b
G 204-39 b
G 204-39 b is an exoplanet orbiting the star G 204-39, located about 45.6 light-years (14.0 pc) away from Solar System. Its discovery was publicly announced on 2010.
The host star G 204-39 has apparent magnitude of 11.6, with absolute magnitude of 10.9. It is 0.4 times more massive and 0.4 times bigger compared with our Sun. The surface temperature is 3500 with its spectral types of M3V
(Projected orbit of G 204-39 b around its host star G 204-39)
The Star G 204-39 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.097 AU ( 14567487.6 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.135 AU ( 20136074.7 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 0.205 AU ( 30682921.8 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 0.302 AU ( 45151263.6 km)
Radiation at Planetary Boundary of G 204-39 b : 0.00 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star G 204-39)
Kopparapu Recent Venus for Star G 204-39 distance : 0.110 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star G 204-39 distance : 0.139 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star G 204-39 distance : 0.134 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star G 204-39 distance : 0.148 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star G 204-39 distance : 0.271 AU
Kopparapu Outer Boundary for Early Mars for Star G 204-39 distance : 0.286 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star G 204-39)
Original Kopparapu Recent Venus for Star G 204-39 distance : 0.109 AU
Original Kopparapu Runaway Greenhouse for Star G 204-39 distance : 0.144 AU
Original Kopparapu Moist Greenhouse for Star G 204-39 distance : 0.144 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star G 204-39 distance : 0.275 AU
Original Kopparapu Outer Boundary for Early Mars for Star G 204-39 distance : 0.286 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star G 204-39)
(Position in Stellar Map of star G 204-39 and its Exoplanet G 204-39 b)
(Zoomed position in Stellar Map of star G 204-39 and its Exoplanet G 204-39 b (zoom level 3))
(Synthetic Spectrum of star G 204-39*)
*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
