|
Exoplanet Name : |
VHS 1256-1257 b |
|
Alternate Name : |
|
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
1.2500 |
(Rjup) |
14.0113 |
(Rearth) |
|
Mass (Mjup / Me): |
19.0000 |
(Mjup) |
6040.8220 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
179.0000 |
(AU) |
179.0000 |
(AU Est.) |
|
Eccentricity : |
0.0000 |
|
Orbital Period(Yrs) |
0.0000 |
|
Orbital Period(Observed/Estimated) |
0.00 |
(Days Obs.) |
3237489.29 |
(Days Est.) |
|
Surface Gravity (G Earth) |
30.7710 |
|
Star Radiation at Atmospheric Boundary: |
0.0 |
(W/m2) |
|
Measured Temperature (K) |
1240.0 |
(K) |
|
Blackbody T 0.1(K) |
2.5 |
(K) |
|
Blackbody T 0.3(K) |
2.3 |
(K) |
|
Blackbody T 0.7(K) |
1.9 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
3.0 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
2.8 |
(K) |
|
Size Class: |
Super-Jupiter-size |
|
Mass Class: |
|
|
Detection Type : |
Imaging |
|
Mass Detection : |
Astrometry |
|
Radius Detection : |
|
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
|
Habitability by Kopparapu: |
Not habitable |
|
Star Name : |
VHS 1256-1257 |
|
Alternate Name : |
|
|
Star Distance(LY) : |
41.4 |
|
Stellar Radius(Rsun) : |
0.1 |
(Rsun Estimated) |
|
Stellar Mass(Msun) : |
0.1 |
(Msun Measured) |
0.0 |
(Msun Estimated) |
|
Star Age : |
0.2 |
(GY) |
|
Temperature : |
2620 |
(K) |
|
Spectral type : |
M7.5 |
|
UV portion[%]: |
0.3 |
|
Visible portion[%]: |
3.0 |
|
IR portion[%]: |
96.7 |
|
Metalicity : |
0.0 |
|
Absolute Magnitude: |
17.3 |
|
Apparent Magnitude: |
17.8 |
|
Right Ascension(RA) |
194.0083 |
|
Declination (DEC) |
-12.9567 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
|
|
Discovered by |
|
|
Discovery Paper - Authors |
"Gauza,artosz et al." |
|
Discovery Paper - Title |
Discovery of a Young Planetary Mass Companion to the Nearby M Dwarf VHS J125601.92-125723.9 |
|
Discovery Paper - Journal |
0 |
|
Discovery Paper - URL |
0 |
|
SIMBAD LINK |
|
|
Open Exoplanet Database Link |
http://www.openexoplanetcatalogue.com/planet/VHS%201256-1257%20b/ |
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VHS 1256-1257 b
VHS 1256-1257 b
VHS 1256-1257 b is an exoplanet orbiting the star VHS 1256-1257 , located about 41.4 light-years (12.7 pc) away from Solar System. Its discovery was publicly announced on 2015.
The host star VHS 1256-1257 has apparent magnitude of 17.8, with absolute magnitude of 17.3. It is 0.1 times more massive and 0.1 times bigger compared with our Sun. The surface temperature is 2620 with its spectral types of M7.5
(Projected orbit of VHS 1256-1257 b around its host star VHS 1256-1257 )
The Star VHS 1256-1257 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.011 AU ( 1623990.8 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.015 AU ( 2244779.6 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 0.023 AU ( 3420547.4 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 0.034 AU ( 5033485.3 km)
Radiation at Planetary Boundary of VHS 1256-1257 b : 0.00 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star VHS 1256-1257 )
Kopparapu Recent Venus for Star VHS 1256-1257 distance : 0.012 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star VHS 1256-1257 distance : 0.016 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star VHS 1256-1257 distance : 0.015 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star VHS 1256-1257 distance : 0.017 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star VHS 1256-1257 distance : 0.032 AU
Kopparapu Outer Boundary for Early Mars for Star VHS 1256-1257 distance : 0.034 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star VHS 1256-1257 )
Original Kopparapu Recent Venus for Star VHS 1256-1257 distance : 0.012 AU
Original Kopparapu Runaway Greenhouse for Star VHS 1256-1257 distance : 0.016 AU
Original Kopparapu Moist Greenhouse for Star VHS 1256-1257 distance : 0.016 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star VHS 1256-1257 distance : 0.032 AU
Original Kopparapu Outer Boundary for Early Mars for Star VHS 1256-1257 distance : 0.034 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star VHS 1256-1257 )
(Position in Stellar Map of star VHS 1256-1257 and its Exoplanet VHS 1256-1257 b)
(Zoomed position in Stellar Map of star VHS 1256-1257 and its Exoplanet VHS 1256-1257 b (zoom level 3))
(Synthetic Spectrum of star VHS 1256-1257 *)
*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
