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Exoplanet Name : |
HD 125271 b |
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Alternate Name : |
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Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.9078 |
(Rjup) |
10.1759 |
(Rearth) |
|
Mass (Mjup / Me): |
10.9040 |
(Mjup) |
3466.7960 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
10.8170 |
(AU) |
10.8170 |
(AU Est.) |
|
Eccentricity : |
0.1650 |
|
Orbital Period(Yrs) |
40.7983 |
|
Orbital Period(Observed/Estimated) |
14902.00 |
(Days Obs.) |
15004.44 |
(Days Est.) |
|
Surface Gravity (G Earth) |
33.4800 |
|
Star Radiation at Atmospheric Boundary: |
2.9 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
58.2 |
(K) |
|
Blackbody T 0.3(K) |
54.7 |
(K) |
|
Blackbody T 0.7(K) |
44.2 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
69.2 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
65.0 |
(K) |
|
Size Class: |
Jupiter-size |
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Mass Class: |
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|
Detection Type : |
"Radial Velocity, Astrometry" |
|
Mass Detection : |
|
|
Radius Detection : |
|
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
|
Habitability by Kopparapu: |
Not habitable |
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Star Name : |
HD 125271 |
|
Alternate Name : |
|
|
Star Distance(LY) : |
128.3 |
|
Stellar Radius(Rsun) : |
0.8 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
0.8 |
(Msun Measured) |
0.8 |
(Msun Estimated) |
|
Star Age : |
0.0 |
(GY) |
|
Temperature : |
4703 |
(K) |
|
Spectral type : |
K3Vk |
|
UV portion[%]: |
2.2 |
|
Visible portion[%]: |
34.2 |
|
IR portion[%]: |
63.6 |
|
Metalicity : |
-0.2 |
|
Absolute Magnitude: |
19.0 |
|
Apparent Magnitude: |
22.0 |
|
Right Ascension(RA) |
216.6486 |
|
Declination (DEC) |
-81.4533 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
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Discovered by |
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Discovery Paper - Authors |
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|
Discovery Paper - Title |
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|
Discovery Paper - Journal |
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|
Discovery Paper - URL |
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|
SIMBAD LINK |
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Open Exoplanet Database Link |
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HD 125271 b
HD 125271 b
HD 125271 b is an exoplanet orbiting the star HD 125271, located about 128.3 light-years (39.3 pc) away from Solar System. Its discovery was publicly announced on 2022.
The host star HD 125271 has apparent magnitude of 22.0, with absolute magnitude of 19.0. It is 0.8 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 4703 with its spectral types of K3Vk
In this planetary system, the extrasolar planet HD 125271 b orbits around the star HD 125271 every 14902.0 days with its orbital distance of 10.82 AU ( 1618200167.4 km)
(Projected orbit of HD 125271 b around its host star HD 125271)
The Star HD 125271 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.360 AU ( 53854433.1 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.498 AU ( 74440900.4 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 0.758 AU ( 113431458.5 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 1.116 AU ( 166919360.3 km)
Radiation at Planetary Boundary of HD 125271 b : 2.89 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 125271)
Kopparapu Recent Venus for Star HD 125271 distance : 0.395 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 125271 distance : 0.500 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 125271 distance : 0.482 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 125271 distance : 0.530 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 125271 distance : 0.917 AU
Kopparapu Outer Boundary for Early Mars for Star HD 125271 distance : 0.967 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 125271)
Original Kopparapu Recent Venus for Star HD 125271 distance : 0.390 AU
Original Kopparapu Runaway Greenhouse for Star HD 125271 distance : 0.515 AU
Original Kopparapu Moist Greenhouse for Star HD 125271 distance : 0.515 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 125271 distance : 0.932 AU
Original Kopparapu Outer Boundary for Early Mars for Star HD 125271 distance : 0.969 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 125271)
(Position in Stellar Map of star HD 125271 and its Exoplanet HD 125271 b)
(Zoomed position in Stellar Map of star HD 125271 and its Exoplanet HD 125271 b (zoom level 3))
(Synthetic Spectrum of star HD 125271*)
*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
