|
Exoplanet Name : |
51 Peg b |
|
Alternate Name : |
|
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
1.9000 |
(Rjup) |
21.2971 |
(Rearth) |
|
Mass (Mjup / Me): |
0.4700 |
(Mjup) |
149.4309 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
0.0520 |
(AU) |
0.0520 |
(AU Est.) |
|
Eccentricity : |
0.0069 |
|
Orbital Period(Yrs) |
0.0116 |
|
Orbital Period(Observed/Estimated) |
4.23 |
(Days Obs.) |
4.11 |
(Days Est.) |
|
Surface Gravity (G Earth) |
0.3295 |
|
Star Radiation at Atmospheric Boundary: |
818614.9 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
1342.5 |
(K) |
|
Blackbody T 0.3(K) |
1260.7 |
(K) |
|
Blackbody T 0.7(K) |
1020.1 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
1596.5 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
1499.3 |
(K) |
|
Size Class: |
Super-Jupiter-size |
|
Mass Class: |
|
|
Detection Type : |
Radial Velocity |
|
Mass Detection : |
Radial Velocity |
|
Radius Detection : |
Theoretical |
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
|
Habitability by Kopparapu: |
Not habitable |
|
Star Name : |
51 Peg |
|
Alternate Name : |
|
|
Star Distance(LY) : |
47.9 |
|
Stellar Radius(Rsun) : |
1.3 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
1.1 |
(Msun Measured) |
1.0 |
(Msun Estimated) |
|
Star Age : |
4.0 |
(GY) |
|
Temperature : |
5793 |
(K) |
|
Spectral type : |
G2 IV |
|
UV portion[%]: |
0.3 |
|
Visible portion[%]: |
1.5 |
|
IR portion[%]: |
98.2 |
|
Metalicity : |
0.2 |
|
Absolute Magnitude: |
4.7 |
|
Apparent Magnitude: |
5.5 |
|
Right Ascension(RA) |
344.3625 |
|
Declination (DEC) |
20.7686 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
|
|
Discovered by |
|
|
Discovery Paper - Authors |
"Martins,...; Santos,..; Figueira,.; Faria,..; Montalto,.; Boisse,.; Ehrenreich,.; Lovis,.; Mayor,.; Melo,.; Pepe,.; Sousa,..; Udry,.; Cunha,." |
|
Discovery Paper - Title |
Evidence for a spectroscopic direct detection of reflected light from 51 Pegasi b |
|
Discovery Paper - Journal |
0 |
|
Discovery Paper - URL |
0 |
|
SIMBAD LINK |
http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=51+Peg+&submit=SIMBAD+search |
|
Open Exoplanet Database Link |
http://www.openexoplanetcatalogue.com/planet/51%20Peg%20b/ |
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51 Peg b
51 Peg b
51 Peg b is an exoplanet orbiting the star 51 Peg, located about 47.9 light-years (14.7 pc) away from Solar System. Its discovery was publicly announced on 1995.
The host star 51 Peg has apparent magnitude of 5.5, with absolute magnitude of 4.7. It is 1.1 times more massive and 1.3 times bigger compared with our Sun. The surface temperature is 5793 with its spectral types of G2 IV
In this planetary system, the extrasolar planet 51 Peg b orbits around the star 51 Peg every 4.2 days with its orbital distance of 0.05 AU ( 7779089.3 km)
(Projected orbit of 51 Peg b around its host star 51 Peg)
The Star 51 Peg 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.920 AU ( 137688882.5 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 1.272 AU ( 190322018.0 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 1.939 AU ( 290008637.3 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 2.853 AU ( 426760414.2 km)
Radiation at Planetary Boundary of 51 Peg b : 818614.91 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star 51 Peg)
Kopparapu Recent Venus for Star 51 Peg distance : 0.953 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star 51 Peg distance : 1.207 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star 51 Peg distance : 1.166 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star 51 Peg distance : 1.278 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star 51 Peg distance : 2.130 AU
Kopparapu Outer Boundary for Early Mars for Star 51 Peg distance : 2.247 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star 51 Peg)
Original Kopparapu Recent Venus for Star 51 Peg distance : 0.955 AU
Original Kopparapu Runaway Greenhouse for Star 51 Peg distance : 1.240 AU
Original Kopparapu Moist Greenhouse for Star 51 Peg distance : 1.263 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star 51 Peg distance : 2.168 AU
Original Kopparapu Outer Boundary for Early Mars for Star 51 Peg distance : 2.255 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star 51 Peg)
(Position in Stellar Map of star 51 Peg and its Exoplanet 51 Peg b)
(Zoomed position in Stellar Map of star 51 Peg and its Exoplanet 51 Peg b (zoom level 3))
(Synthetic Spectrum of star 51 Peg*)
*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
