|
Exoplanet Name : |
HIP 57274 b |
|
Alternate Name : |
|
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.2028 |
(Rjup) |
2.2728 |
(Rearth) |
|
Mass (Mjup / Me): |
0.0360 |
(Mjup) |
11.4458 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
0.0700 |
(AU) |
0.0700 |
(AU Est.) |
|
Eccentricity : |
0.1870 |
|
Orbital Period(Yrs) |
0.0223 |
|
Orbital Period(Observed/Estimated) |
8.14 |
(Days Obs.) |
7.92 |
(Days Est.) |
|
Surface Gravity (G Earth) |
2.2158 |
|
Star Radiation at Atmospheric Boundary: |
53641.2 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
679.2 |
(K) |
|
Blackbody T 0.3(K) |
637.9 |
(K) |
|
Blackbody T 0.7(K) |
516.1 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
807.7 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
758.6 |
(K) |
|
Size Class: |
sub-Neptune-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 : |
HIP 57274 |
|
Alternate Name : |
|
|
Star Distance(LY) : |
85.2 |
|
Stellar Radius(Rsun) : |
0.7 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
0.7 |
(Msun Measured) |
0.7 |
(Msun Estimated) |
|
Star Age : |
7.9 |
(GY) |
|
Temperature : |
4640 |
(K) |
|
Spectral type : |
K5V |
|
UV portion[%]: |
2.0 |
|
Visible portion[%]: |
33.3 |
|
IR portion[%]: |
64.7 |
|
Metalicity : |
0.1 |
|
Absolute Magnitude: |
6.9 |
|
Apparent Magnitude: |
9.0 |
|
Right Ascension(RA) |
176.1707 |
|
Declination (DEC) |
30.9592 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
|
|
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=HIP+57274+&submit=SIMBAD+search |
|
Open Exoplanet Database Link |
http://www.openexoplanetcatalogue.com/planet/HIP%2057274%20b/ |
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HIP 57274 b
HIP 57274 b
HIP 57274 b is an exoplanet orbiting the star HIP 57274, located about 85.2 light-years (26.1 pc) away from Solar System. Its discovery was publicly announced on 2011.
The host star HIP 57274 has apparent magnitude of 9.0, with absolute magnitude of 6.9. It is 0.7 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 4640 with its spectral types of K5V
In this planetary system, the extrasolar planet HIP 57274 b orbits around the star HIP 57274 every 8.1 days with its orbital distance of 0.07 AU ( 10471850.9 km)
(Projected orbit of HIP 57274 b around its host star HIP 57274)
The Star HIP 57274 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.317 AU ( 47446369.5 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.438 AU ( 65583281.8 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 0.668 AU ( 99934407.9 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 0.983 AU ( 147057859.1 km)
Radiation at Planetary Boundary of HIP 57274 b : 53641.20 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HIP 57274)
Kopparapu Recent Venus for Star HIP 57274 distance : 0.348 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star HIP 57274 distance : 0.441 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HIP 57274 distance : 0.426 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star HIP 57274 distance : 0.468 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star HIP 57274 distance : 0.812 AU
Kopparapu Outer Boundary for Early Mars for Star HIP 57274 distance : 0.857 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star HIP 57274)
Original Kopparapu Recent Venus for Star HIP 57274 distance : 0.344 AU
Original Kopparapu Runaway Greenhouse for Star HIP 57274 distance : 0.455 AU
Original Kopparapu Moist Greenhouse for Star HIP 57274 distance : 0.455 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HIP 57274 distance : 0.825 AU
Original Kopparapu Outer Boundary for Early Mars for Star HIP 57274 distance : 0.858 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star HIP 57274)
(Position in Stellar Map of star HIP 57274 and its Exoplanet HIP 57274 b)
(Zoomed position in Stellar Map of star HIP 57274 and its Exoplanet HIP 57274 b (zoom level 3))
(Synthetic Spectrum of star HIP 57274*)
*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
