|
Exoplanet Name : |
GJ 3222 Ab |
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Alternate Name : |
"HD 21175 b, HD 21175 Ab" |
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Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.2028 |
(Rjup) |
2.2728 |
(Rearth) |
|
Mass (Mjup / Me): |
0.0360 |
(Mjup) |
11.4458 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
0.0910 |
(AU) |
0.0910 |
(AU Est.) |
|
Eccentricity : |
0.9290 |
|
Orbital Period(Yrs) |
0.0293 |
|
Orbital Period(Observed/Estimated) |
10.70 |
(Days Obs.) |
10.81 |
(Days Est.) |
|
Surface Gravity (G Earth) |
2.2158 |
|
Star Radiation at Atmospheric Boundary: |
68725.6 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
722.6 |
(K) |
|
Blackbody T 0.3(K) |
678.6 |
(K) |
|
Blackbody T 0.7(K) |
549.1 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
859.4 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
807.0 |
(K) |
|
Size Class: |
sub-Neptune-size |
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Mass Class: |
|
|
Detection Type : |
Radial Velocity |
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Mass Detection : |
Radial Velocity |
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Radius Detection : |
|
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
|
Habitability by Kopparapu: |
Not habitable |
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Star Name : |
GJ 3222 A |
|
Alternate Name : |
"HD 21175, HD 21175 A, HIP 15799" |
|
Star Distance(LY) : |
57.7 |
|
Stellar Radius(Rsun) : |
0.8 |
(Rsun Estimated) |
|
Stellar Mass(Msun) : |
0.9 |
(Msun Measured) |
0.9 |
(Msun Estimated) |
|
Star Age : |
3.7 |
(GY) |
|
Temperature : |
5257 |
(K) |
|
Spectral type : |
K0V |
|
UV portion[%]: |
5.5 |
|
Visible portion[%]: |
40.9 |
|
IR portion[%]: |
53.6 |
|
Metalicity : |
0.2 |
|
Absolute Magnitude: |
5.7 |
|
Apparent Magnitude: |
6.9 |
|
Right Ascension(RA) |
50.8969 |
|
Declination (DEC) |
-40.0764 |
|
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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GJ 3222 Ab
GJ 3222 Ab
GJ 3222 Ab is an exoplanet orbiting the star GJ 3222 A, located about 57.7 light-years (17.7 pc) away from Solar System. Its discovery was publicly announced on 2022.
The host star GJ 3222 A has apparent magnitude of 6.9, with absolute magnitude of 5.7. It is 0.9 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5257 with its spectral types of K0V
In this planetary system, the extrasolar planet GJ 3222 Ab orbits around the star GJ 3222 A every 10.7 days with its orbital distance of 0.09 AU ( 13613406.2 km)
(Projected orbit of GJ 3222 Ab around its host star GJ 3222 A)
The Star GJ 3222 A 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.467 AU ( 69816207.8 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.645 AU ( 96504244.4 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 0.983 AU ( 147051112.1 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 1.446 AU ( 216392153.3 km)
Radiation at Planetary Boundary of GJ 3222 Ab : 68725.56 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star GJ 3222 A)
Kopparapu Recent Venus for Star GJ 3222 A distance : 0.498 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star GJ 3222 A distance : 0.631 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star GJ 3222 A distance : 0.609 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star GJ 3222 A distance : 0.669 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 3222 A distance : 1.133 AU
Kopparapu Outer Boundary for Early Mars for Star GJ 3222 A distance : 1.195 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star GJ 3222 A)
Original Kopparapu Recent Venus for Star GJ 3222 A distance : 0.495 AU
Original Kopparapu Runaway Greenhouse for Star GJ 3222 A distance : 0.650 AU
Original Kopparapu Moist Greenhouse for Star GJ 3222 A distance : 0.654 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 3222 A distance : 1.152 AU
Original Kopparapu Outer Boundary for Early Mars for Star GJ 3222 A distance : 1.198 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star GJ 3222 A)
(Position in Stellar Map of star GJ 3222 A and its Exoplanet GJ 3222 Ab)
(Zoomed position in Stellar Map of star GJ 3222 A and its Exoplanet GJ 3222 Ab (zoom level 3))
(Synthetic Spectrum of star GJ 3222 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
