|
Exoplanet Name : |
HD 171238 b |
|
Alternate Name : |
|
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.9078 |
(Rjup) |
10.1759 |
(Rearth) |
|
Mass (Mjup / Me): |
2.6000 |
(Mjup) |
826.6388 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
2.5400 |
(AU) |
2.5400 |
(AU Est.) |
|
Eccentricity : |
0.4000 |
|
Orbital Period(Yrs) |
4.1696 |
|
Orbital Period(Observed/Estimated) |
1523.00 |
(Days Obs.) |
1522.60 |
(Days Est.) |
|
Surface Gravity (G Earth) |
7.9831 |
|
Star Radiation at Atmospheric Boundary: |
140.7 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
153.7 |
(K) |
|
Blackbody T 0.3(K) |
144.3 |
(K) |
|
Blackbody T 0.7(K) |
116.8 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
182.8 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
171.7 |
(K) |
|
Size Class: |
Jupiter-size |
|
Mass Class: |
|
|
Detection Type : |
Radial Velocity |
|
Mass Detection : |
|
|
Radius Detection : |
|
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
|
Habitability by Kopparapu: |
Not habitable |
|
Star Name : |
HD 171238 |
|
Alternate Name : |
|
|
Star Distance(LY) : |
143.7 |
|
Stellar Radius(Rsun) : |
0.9 |
(Rsun Estimated) |
|
Stellar Mass(Msun) : |
0.9 |
(Msun Measured) |
0.9 |
(Msun Estimated) |
|
Star Age : |
4.9 |
(GY) |
|
Temperature : |
5467 |
(K) |
|
Spectral type : |
KOV |
|
UV portion[%]: |
6.7 |
|
Visible portion[%]: |
43.0 |
|
IR portion[%]: |
50.3 |
|
Metalicity : |
0.2 |
|
Absolute Magnitude: |
5.4 |
|
Apparent Magnitude: |
8.7 |
|
Right Ascension(RA) |
278.6820 |
|
Declination (DEC) |
-28.0722 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
06866-01721 |
|
Discovered by |
|
|
Discovery Paper - Authors |
0 |
|
Discovery Paper - Title |
|
|
Discovery Paper - Journal |
0 |
|
Discovery Paper - URL |
0 |
|
SIMBAD LINK |
http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+171238+&submit=SIMBAD+search |
|
Open Exoplanet Database Link |
http://www.openexoplanetcatalogue.com/planet/HD%20171238%20b/ |
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HD 171238 b
HD 171238 b
HD 171238 b is an exoplanet orbiting the star HD 171238, located about 143.7 light-years (44.1 pc) away from Solar System. Its discovery was publicly announced on 2009.
The host star HD 171238 has apparent magnitude of 8.7, with absolute magnitude of 5.4. It is 0.9 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5467 with its spectral types of KOV
In this planetary system, the extrasolar planet HD 171238 b orbits around the star HD 171238 every 1523.0 days with its orbital distance of 2.54 AU ( 379978591.6 km)
(Projected orbit of HD 171238 b around its host star HD 171238)
The Star HD 171238 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.589 AU ( 88167217.7 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.815 AU ( 121870135.8 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 1.241 AU ( 185703117.1 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 1.827 AU ( 273270272.0 km)
Radiation at Planetary Boundary of HD 171238 b : 140.68 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 171238)
Kopparapu Recent Venus for Star HD 171238 distance : 0.622 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 171238 distance : 0.788 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 171238 distance : 0.761 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 171238 distance : 0.834 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 171238 distance : 1.404 AU
Kopparapu Outer Boundary for Early Mars for Star HD 171238 distance : 1.481 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 171238)
Original Kopparapu Recent Venus for Star HD 171238 distance : 0.619 AU
Original Kopparapu Runaway Greenhouse for Star HD 171238 distance : 0.810 AU
Original Kopparapu Moist Greenhouse for Star HD 171238 distance : 0.820 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 171238 distance : 1.428 AU
Original Kopparapu Outer Boundary for Early Mars for Star HD 171238 distance : 1.485 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 171238)
(Position in Stellar Map of star HD 171238 and its Exoplanet HD 171238 b)
(Zoomed position in Stellar Map of star HD 171238 and its Exoplanet HD 171238 b (zoom level 3))
(Synthetic Spectrum of star HD 171238*)
*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
