|
Exoplanet Name : |
HD 240237 b |
|
Alternate Name : |
|
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.9078 |
(Rjup) |
10.1759 |
(Rearth) |
|
Mass (Mjup / Me): |
5.3000 |
(Mjup) |
1685.0714 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
1.9000 |
(AU) |
1.9000 |
(AU Est.) |
|
Eccentricity : |
0.4000 |
|
Orbital Period(Yrs) |
2.0416 |
|
Orbital Period(Observed/Estimated) |
745.70 |
(Days Obs.) |
735.83 |
(Days Est.) |
|
Surface Gravity (G Earth) |
16.2733 |
|
Star Radiation at Atmospheric Boundary: |
125817.7 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
840.6 |
(K) |
|
Blackbody T 0.3(K) |
789.4 |
(K) |
|
Blackbody T 0.7(K) |
638.7 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
999.6 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
938.7 |
(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 240237 |
|
Alternate Name : |
|
|
Star Distance(LY) : |
2861.0 |
|
Stellar Radius(Rsun) : |
32.0 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
1.7 |
(Msun Measured) |
1.6 |
(Msun Estimated) |
|
Star Age : |
0.0 |
(GY) |
|
Temperature : |
4361 |
(K) |
|
Spectral type : |
K2III |
|
UV portion[%]: |
1.1 |
|
Visible portion[%]: |
28.6 |
|
IR portion[%]: |
70.3 |
|
Metalicity : |
-0.3 |
|
Absolute Magnitude: |
-1.5 |
|
Apparent Magnitude: |
8.2 |
|
Right Ascension(RA) |
348.9259 |
|
Declination (DEC) |
58.0433 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
04006-00019 |
|
Discovered by |
|
|
Discovery Paper - Authors |
"Gettel,.; Wolszczan,.; Niedzielski,.; Nowak,.; Adam_w,.; Zieli_ski,.; Maciejewski,." |
|
Discovery Paper - Title |
"Substellar-mass Companions to the K-giants HD 240237, BD +48 738, and HD 96127" |
|
Discovery Paper - Journal |
"The Astrophysical Journal,olume 745,umber 1" |
|
Discovery Paper - URL |
http://iopscience.iop.org/article/10.1088/0004-637X/745/1/28/meta |
|
SIMBAD LINK |
http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+240237+&submit=SIMBAD+search |
|
Open Exoplanet Database Link |
http://www.openexoplanetcatalogue.com/planet/HD%20240237%20b/ |
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HD 240237 b
HD 240237 b
HD 240237 b is an exoplanet orbiting the star HD 240237, located about 2861.0 light-years (877.2 pc) away from Solar System. Its discovery was publicly announced on 2010.
The host star HD 240237 has apparent magnitude of 8.2, with absolute magnitude of -1.5. It is 1.7 times more massive and 32.0 times bigger compared with our Sun. The surface temperature is 4361 with its spectral types of K2III
In this planetary system, the extrasolar planet HD 240237 b orbits around the star HD 240237 every 745.7 days with its orbital distance of 1.90 AU ( 284235954.3 km)
(Projected orbit of HD 240237 b around its host star HD 240237)
The Star HD 240237 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 13.184 AU ( 1972333104.3 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 18.224 AU ( 2726279782.4 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 27.769 AU ( 4154247064.0 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 40.864 AU ( 6113156540.6 km)
Radiation at Planetary Boundary of HD 240237 b : 125817.75 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 240237)
Kopparapu Recent Venus for Star HD 240237 distance : 14.629 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 240237 distance : 18.518 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 240237 distance : 17.886 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 240237 distance : 19.648 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 240237 distance : 34.527 AU
Kopparapu Outer Boundary for Early Mars for Star HD 240237 distance : 36.422 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 240237)
Original Kopparapu Recent Venus for Star HD 240237 distance : 14.434 AU
Original Kopparapu Runaway Greenhouse for Star HD 240237 distance : 19.127 AU
Original Kopparapu Moist Greenhouse for Star HD 240237 distance : 19.098 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 240237 distance : 35.087 AU
Original Kopparapu Outer Boundary for Early Mars for Star HD 240237 distance : 36.489 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 240237)
(Position in Stellar Map of star HD 240237 and its Exoplanet HD 240237 b)
(Zoomed position in Stellar Map of star HD 240237 and its Exoplanet HD 240237 b (zoom level 3))
(Synthetic Spectrum of star HD 240237*)
*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
