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Exoplanet Name : |
HD 217958 Ab |
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Alternate Name : |
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Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.9078 |
(Rjup) |
10.1759 |
(Rearth) |
|
Mass (Mjup / Me): |
0.5240 |
(Mjup) |
166.5995 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
3.7580 |
(AU) |
3.7580 |
(AU Est.) |
|
Eccentricity : |
0.1560 |
|
Orbital Period(Yrs) |
7.0093 |
|
Orbital Period(Observed/Estimated) |
2560.20 |
(Days Obs.) |
2560.43 |
(Days Est.) |
|
Surface Gravity (G Earth) |
1.6089 |
|
Star Radiation at Atmospheric Boundary: |
188.8 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
165.4 |
(K) |
|
Blackbody T 0.3(K) |
155.4 |
(K) |
|
Blackbody T 0.7(K) |
125.7 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
196.7 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
184.8 |
(K) |
|
Size Class: |
Jupiter-size |
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Mass Class: |
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Detection Type : |
"Radial Velocity, Astrometry" |
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Mass Detection : |
Astrometry |
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Radius Detection : |
|
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
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Habitability by Kopparapu: |
Not habitable |
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Star Name : |
HD 217958 A |
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Alternate Name : |
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Star Distance(LY) : |
201.6 |
|
Stellar Radius(Rsun) : |
1.3 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
1.1 |
(Msun Measured) |
1.1 |
(Msun Estimated) |
|
Star Age : |
0.0 |
(GY) |
|
Temperature : |
5930 |
(K) |
|
Spectral type : |
G0IV-V |
|
UV portion[%]: |
0.3 |
|
Visible portion[%]: |
1.5 |
|
IR portion[%]: |
98.2 |
|
Metalicity : |
0.3 |
|
Absolute Magnitude: |
4.1 |
|
Apparent Magnitude: |
8.1 |
|
Right Ascension(RA) |
346.1370 |
|
Declination (DEC) |
-25.6911 |
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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 217958 Ab
HD 217958 Ab
HD 217958 Ab is an exoplanet orbiting the star HD 217958 A, located about 201.6 light-years (61.8 pc) away from Solar System. Its discovery was publicly announced on 2022.
The host star HD 217958 A has apparent magnitude of 8.1, with absolute magnitude of 4.1. It is 1.1 times more massive and 1.3 times bigger compared with our Sun. The surface temperature is 5930 with its spectral types of G0IV-V
In this planetary system, the extrasolar planet HD 217958 Ab orbits around the star HD 217958 A every 2560.2 days with its orbital distance of 3.76 AU ( 562188798.1 km)
(Projected orbit of HD 217958 Ab around its host star HD 217958 A)
The Star HD 217958 A 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 1.010 AU ( 151116199.7 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 1.396 AU ( 208882079.3 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 2.128 AU ( 318290063.4 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 3.131 AU ( 468377771.7 km)
Radiation at Planetary Boundary of HD 217958 Ab : 188.80 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 217958 A)
Kopparapu Recent Venus for Star HD 217958 A distance : 1.037 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 217958 A distance : 1.314 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 217958 A distance : 1.269 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 217958 A distance : 1.391 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 217958 A distance : 2.311 AU
Kopparapu Outer Boundary for Early Mars for Star HD 217958 A distance : 2.437 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 217958 A)
Original Kopparapu Recent Venus for Star HD 217958 A distance : 1.042 AU
Original Kopparapu Runaway Greenhouse for Star HD 217958 A distance : 1.349 AU
Original Kopparapu Moist Greenhouse for Star HD 217958 A distance : 1.379 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 217958 A distance : 2.352 AU
Original Kopparapu Outer Boundary for Early Mars for Star HD 217958 A distance : 2.446 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 217958 A)
(Position in Stellar Map of star HD 217958 A and its Exoplanet HD 217958 Ab)
(Zoomed position in Stellar Map of star HD 217958 A and its Exoplanet HD 217958 Ab (zoom level 3))
(Synthetic Spectrum of star HD 217958 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
