|
Exoplanet Name : |
HD 203771 b |
|
Alternate Name : |
|
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.9078 |
(Rjup) |
10.1759 |
(Rearth) |
|
Mass (Mjup / Me): |
56.2800 |
(Mjup) |
17893.5506 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
2.0060 |
(AU) |
2.0060 |
(AU Est.) |
|
Eccentricity : |
0.5830 |
|
Orbital Period(Yrs) |
3.0444 |
|
Orbital Period(Observed/Estimated) |
1112.00 |
(Days Obs.) |
1145.99 |
(Days Est.) |
|
Surface Gravity (G Earth) |
172.8040 |
|
Star Radiation at Atmospheric Boundary: |
122.5 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
148.5 |
(K) |
|
Blackbody T 0.3(K) |
139.4 |
(K) |
|
Blackbody T 0.7(K) |
112.8 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
176.6 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
165.8 |
(K) |
|
Size Class: |
Jupiter-size |
|
Mass Class: |
|
|
Detection Type : |
"Radial Velocity, Astrometry" |
|
Mass Detection : |
Astrometry |
|
Radius Detection : |
|
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
|
Habitability by Kopparapu: |
Not habitable |
|
Star Name : |
HD 203771 |
|
Alternate Name : |
|
|
Star Distance(LY) : |
182.1 |
|
Stellar Radius(Rsun) : |
0.8 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
0.8 |
(Msun Measured) |
0.9 |
(Msun Estimated) |
|
Star Age : |
0.0 |
(GY) |
|
Temperature : |
4963 |
(K) |
|
Spectral type : |
K1V |
|
UV portion[%]: |
3.1 |
|
Visible portion[%]: |
36.7 |
|
IR portion[%]: |
60.2 |
|
Metalicity : |
0.1 |
|
Absolute Magnitude: |
6.2 |
|
Apparent Magnitude: |
10.0 |
|
Right Ascension(RA) |
321.2576 |
|
Declination (DEC) |
-23.3189 |
|
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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HD 203771 b
HD 203771 b
HD 203771 b is an exoplanet orbiting the star HD 203771, located about 182.1 light-years (55.8 pc) away from Solar System. Its discovery was publicly announced on 2022.
The host star HD 203771 has apparent magnitude of 10.0, with absolute magnitude of 6.2. It is 0.8 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 4963 with its spectral types of K1V
In this planetary system, the extrasolar planet HD 203771 b orbits around the star HD 203771 every 1112.0 days with its orbital distance of 2.01 AU ( 300093328.6 km)
(Projected orbit of HD 203771 b around its host star HD 203771)
The Star HD 203771 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.434 AU ( 64978707.4 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.600 AU ( 89817554.6 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 0.915 AU ( 136862076.6 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 1.346 AU ( 201398541.3 km)
Radiation at Planetary Boundary of HD 203771 b : 122.51 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 203771)
Kopparapu Recent Venus for Star HD 203771 distance : 0.471 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 203771 distance : 0.596 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 203771 distance : 0.576 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 203771 distance : 0.632 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 203771 distance : 1.082 AU
Kopparapu Outer Boundary for Early Mars for Star HD 203771 distance : 1.141 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 203771)
Original Kopparapu Recent Venus for Star HD 203771 distance : 0.466 AU
Original Kopparapu Runaway Greenhouse for Star HD 203771 distance : 0.614 AU
Original Kopparapu Moist Greenhouse for Star HD 203771 distance : 0.616 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 203771 distance : 1.100 AU
Original Kopparapu Outer Boundary for Early Mars for Star HD 203771 distance : 1.144 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 203771)
(Position in Stellar Map of star HD 203771 and its Exoplanet HD 203771 b)
(Zoomed position in Stellar Map of star HD 203771 and its Exoplanet HD 203771 b (zoom level 3))
(Synthetic Spectrum of star HD 203771*)
*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
