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Exoplanet Name : |
KOI-6931 b |
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Alternate Name : |
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Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.1060 |
(Rjup) |
1.1882 |
(Rearth) |
|
Mass (Mjup / Me): |
0.0057 |
(Mjup) |
1.8197 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
0.0368 |
(AU) |
0.0368 |
(AU Est.) |
|
Eccentricity : |
0.0000 |
|
Orbital Period(Yrs) |
0.0070 |
|
Orbital Period(Observed/Estimated) |
2.54 |
(Days Obs.) |
2.54 |
(Days Est.) |
|
Surface Gravity (G Earth) |
1.2890 |
|
Star Radiation at Atmospheric Boundary: |
837637.4 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
1350.2 |
(K) |
|
Blackbody T 0.3(K) |
1268.0 |
(K) |
|
Blackbody T 0.7(K) |
1026.0 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
1605.7 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
1507.9 |
(K) |
|
Size Class: |
Earth-size |
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Mass Class: |
|
|
Detection Type : |
Primary Transit |
|
Mass Detection : |
|
|
Radius Detection : |
Primary Transit |
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
|
Habitability by Kopparapu: |
Not habitable |
|
Star Name : |
2MASS J19420054+4336355 |
|
Alternate Name : |
7902204 |
|
Star Distance(LY) : |
5354.7 |
|
Stellar Radius(Rsun) : |
0.9 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
1.0 |
(Msun Measured) |
1.0 |
(Msun Estimated) |
|
Star Age : |
0.0 |
(GY) |
|
Temperature : |
5778 |
(K) |
|
Spectral type : |
G2 |
|
UV portion[%]: |
7.8 |
|
Visible portion[%]: |
44.8 |
|
IR portion[%]: |
47.4 |
|
Metalicity : |
0.1 |
|
Absolute Magnitude: |
4.6 |
|
Apparent Magnitude: |
15.7 |
|
Right Ascension(RA) |
295.5023 |
|
Declination (DEC) |
43.6099 |
|
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 |
http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=2MASS+J19420054%2B4336355&submit=SIMBAD+search |
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Open Exoplanet Database Link |
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KOI-6931 b
KOI-6931 b
KOI-6931 b is an exoplanet orbiting the star 2MASS J19420054+4336355, located about 5354.7 light-years (1641.8 pc) away from Solar System. Its discovery was publicly announced on 2017.
The host star 2MASS J19420054+4336355 has apparent magnitude of 15.7, with absolute magnitude of 4.6. It is 1.0 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5778 with its spectral types of G2
In this planetary system, the extrasolar planet KOI-6931 b orbits around the star 2MASS J19420054+4336355 every 2.5 days with its orbital distance of 0.04 AU ( 5505201.6 km)
(Projected orbit of KOI-6931 b around its host star 2MASS J19420054+4336355)
The Star 2MASS J19420054+4336355 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.659 AU ( 98567005.9 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.911 AU ( 136245360.8 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 1.388 AU ( 207607778.8 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 2.042 AU ( 305503941.2 km)
Radiation at Planetary Boundary of KOI-6931 b : 837637.43 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star 2MASS J19420054+4336355)
Kopparapu Recent Venus for Star 2MASS J19420054+4336355 distance : 0.683 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star 2MASS J19420054+4336355 distance : 0.865 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star 2MASS J19420054+4336355 distance : 0.835 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star 2MASS J19420054+4336355 distance : 0.916 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star 2MASS J19420054+4336355 distance : 1.527 AU
Kopparapu Outer Boundary for Early Mars for Star 2MASS J19420054+4336355 distance : 1.611 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star 2MASS J19420054+4336355)
Original Kopparapu Recent Venus for Star 2MASS J19420054+4336355 distance : 0.684 AU
Original Kopparapu Runaway Greenhouse for Star 2MASS J19420054+4336355 distance : 0.889 AU
Original Kopparapu Moist Greenhouse for Star 2MASS J19420054+4336355 distance : 0.905 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star 2MASS J19420054+4336355 distance : 1.554 AU
Original Kopparapu Outer Boundary for Early Mars for Star 2MASS J19420054+4336355 distance : 1.616 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star 2MASS J19420054+4336355)
(Position in Stellar Map of star 2MASS J19420054+4336355 and its Exoplanet KOI-6931 b)
(Zoomed position in Stellar Map of star 2MASS J19420054+4336355 and its Exoplanet KOI-6931 b (zoom level 3))
(Synthetic Spectrum of star 2MASS J19420054+4336355*)
*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
