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Exoplanet Name : |
Kepler-451 b |
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Alternate Name : |
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Status : |
Confirmed |
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Radius (Rjup / Re): |
0.9078 |
(Rjup) |
10.1759 |
(Rearth) |
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Mass (Mjup / Me): |
1.8600 |
(Mjup) |
591.3647 |
(Mearth) |
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Semi Major Axis / Orbital Distance Calculated |
0.9000 |
(AU) |
0.9000 |
(AU Est.) |
|
Eccentricity : |
0.3300 |
|
Orbital Period(Yrs) |
1.1115 |
|
Orbital Period(Observed/Estimated) |
406.00 |
(Days Obs.) |
402.60 |
(Days Est.) |
|
Surface Gravity (G Earth) |
5.7110 |
|
Star Radiation at Atmospheric Boundary: |
2470.4 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
314.7 |
(K) |
|
Blackbody T 0.3(K) |
295.5 |
(K) |
|
Blackbody T 0.7(K) |
239.1 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
374.2 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
351.4 |
(K) |
|
Size Class: |
Jupiter-size |
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Mass Class: |
|
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Detection Type : |
Primary Transit |
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Mass Detection : |
Timing |
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Radius Detection : |
|
|
Habitability by Solar Eq. Astronomical Unit: |
Habitable |
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Habitability by Kopparapu: |
Not habitable |
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Star Name : |
2M 1938+46 |
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Alternate Name : |
Kepler-451 |
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Star Distance(LY) : |
1292.8 |
|
Stellar Radius(Rsun) : |
0.3 |
(Rsun Estimated) |
|
Stellar Mass(Msun) : |
0.6 |
(Msun Measured) |
0.6 |
(Msun Estimated) |
|
Star Age : |
0.0 |
(GY) |
|
Temperature : |
10868 |
(K) |
|
Spectral type : |
sdB+M |
|
UV portion[%]: |
0.3 |
|
Visible portion[%]: |
1.5 |
|
IR portion[%]: |
98.2 |
|
Metalicity : |
0.0 |
|
Absolute Magnitude: |
14.0 |
|
Apparent Magnitude: |
22.0 |
|
Right Ascension(RA) |
294.6375 |
|
Declination (DEC) |
46.0664 |
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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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Kepler-451 b
Kepler-451 b
Kepler-451 b is an exoplanet orbiting the star 2M 1938+46, located about 1292.8 light-years (396.4 pc) away from Solar System. Its discovery was publicly announced on 2015.
The host star 2M 1938+46 has apparent magnitude of 22.0, with absolute magnitude of 14.0. It is 0.6 times more massive and 0.3 times bigger compared with our Sun. The surface temperature is 10868 with its spectral types of sdB+M
In this planetary system, the extrasolar planet Kepler-451 b orbits around the star 2M 1938+46 every 406.0 days with its orbital distance of 0.90 AU ( 134638083.6 km)
(Projected orbit of Kepler-451 b around its host star 2M 1938+46)
The Star 2M 1938+46 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.875 AU ( 130913211.8 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 1.210 AU ( 180956270.5 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 1.843 AU ( 275737310.7 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 2.712 AU ( 405759531.9 km)
Radiation at Planetary Boundary of Kepler-451 b : 2470.42 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star 2M 1938+46)
Kopparapu Recent Venus for Star 2M 1938+46 distance : nan AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star 2M 1938+46 distance : nan AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star 2M 1938+46 distance : nan AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star 2M 1938+46 distance : nan AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star 2M 1938+46 distance : nan AU
Kopparapu Outer Boundary for Early Mars for Star 2M 1938+46 distance : nan AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star 2M 1938+46)
Original Kopparapu Recent Venus for Star 2M 1938+46 distance : 1.349 AU
Original Kopparapu Runaway Greenhouse for Star 2M 1938+46 distance : nan AU
Original Kopparapu Moist Greenhouse for Star 2M 1938+46 distance : 1.785 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star 2M 1938+46 distance : nan AU
Original Kopparapu Outer Boundary for Early Mars for Star 2M 1938+46 distance : nan AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star 2M 1938+46)
(Position in Stellar Map of star 2M 1938+46 and its Exoplanet Kepler-451 b)
(Zoomed position in Stellar Map of star 2M 1938+46 and its Exoplanet Kepler-451 b (zoom level 3))
(Synthetic Spectrum of star 2M 1938+46*)
*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
