|
Exoplanet Name : |
HD 206255 b |
|
Alternate Name : |
|
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.2608 |
(Rjup) |
2.9237 |
(Rearth) |
|
Mass (Mjup / Me): |
0.1076 |
(Mjup) |
34.2101 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
0.4610 |
(AU) |
0.4610 |
(AU Est.) |
|
Eccentricity : |
0.2300 |
|
Orbital Period(Yrs) |
0.2629 |
|
Orbital Period(Observed/Estimated) |
96.05 |
(Days Obs.) |
95.94 |
(Days Est.) |
|
Surface Gravity (G Earth) |
4.0022 |
|
Star Radiation at Atmospheric Boundary: |
9250.2 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
437.7 |
(K) |
|
Blackbody T 0.3(K) |
411.1 |
(K) |
|
Blackbody T 0.7(K) |
332.6 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
520.5 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
488.8 |
(K) |
|
Size Class: |
sub-Neptune-size |
|
Mass Class: |
|
|
Detection Type : |
Radial Velocity |
|
Mass Detection : |
Radial Velocity |
|
Radius Detection : |
|
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
|
Habitability by Kopparapu: |
Not habitable |
|
Star Name : |
HD 206255 |
|
Alternate Name : |
|
|
Star Distance(LY) : |
245.9 |
|
Stellar Radius(Rsun) : |
1.3 |
(Rsun Estimated) |
|
Stellar Mass(Msun) : |
1.4 |
(Msun Measured) |
1.4 |
(Msun Estimated) |
|
Star Age : |
0.0 |
(GY) |
|
Temperature : |
5635 |
(K) |
|
Spectral type : |
G5IV/V |
|
UV portion[%]: |
7.4 |
|
Visible portion[%]: |
44.1 |
|
IR portion[%]: |
48.5 |
|
Metalicity : |
0.0 |
|
Absolute Magnitude: |
17.6 |
|
Apparent Magnitude: |
22.0 |
|
Right Ascension(RA) |
325.5912 |
|
Declination (DEC) |
-50.0900 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
08432-00832 |
|
Discovered by |
|
|
Discovery Paper - Authors |
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|
Discovery Paper - Title |
|
|
Discovery Paper - Journal |
|
|
Discovery Paper - URL |
|
|
SIMBAD LINK |
http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+206255+&submit=SIMBAD+search |
|
Open Exoplanet Database Link |
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HD 206255 b
HD 206255 b
HD 206255 b is an exoplanet orbiting the star HD 206255, located about 245.9 light-years (75.4 pc) away from Solar System. Its discovery was publicly announced on 2019.
The host star HD 206255 has apparent magnitude of 22.0, with absolute magnitude of 17.6. It is 1.4 times more massive and 1.3 times bigger compared with our Sun. The surface temperature is 5635 with its spectral types of G5IV/V
In this planetary system, the extrasolar planet HD 206255 b orbits around the star HD 206255 every 96.0 days with its orbital distance of 0.46 AU ( 68964618.4 km)
(Projected orbit of HD 206255 b around its host star HD 206255)
The Star HD 206255 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.867 AU ( 129757612.8 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 1.199 AU ( 179358930.6 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 1.827 AU ( 273303318.3 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 2.688 AU ( 402177805.5 km)
Radiation at Planetary Boundary of HD 206255 b : 9250.23 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 206255)
Kopparapu Recent Venus for Star HD 206255 distance : 0.907 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 206255 distance : 1.148 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 206255 distance : 1.109 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 206255 distance : 1.216 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 206255 distance : 2.036 AU
Kopparapu Outer Boundary for Early Mars for Star HD 206255 distance : 2.147 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 206255)
Original Kopparapu Recent Venus for Star HD 206255 distance : 0.905 AU
Original Kopparapu Runaway Greenhouse for Star HD 206255 distance : 1.180 AU
Original Kopparapu Moist Greenhouse for Star HD 206255 distance : 1.198 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 206255 distance : 2.071 AU
Original Kopparapu Outer Boundary for Early Mars for Star HD 206255 distance : 2.154 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 206255)
(Position in Stellar Map of star HD 206255 and its Exoplanet HD 206255 b)
(Zoomed position in Stellar Map of star HD 206255 and its Exoplanet HD 206255 b (zoom level 3))
(Synthetic Spectrum of star HD 206255*)
*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
