|
Exoplanet Name : |
KOI-6918 b |
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Alternate Name : |
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Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.5500 |
(Rjup) |
6.1650 |
(Rearth) |
|
Mass (Mjup / Me): |
0.1631 |
(Mjup) |
51.8513 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
0.0172 |
(AU) |
0.0172 |
(AU Est.) |
|
Eccentricity : |
0.0000 |
|
Orbital Period(Yrs) |
0.0025 |
|
Orbital Period(Observed/Estimated) |
0.90 |
(Days Obs.) |
0.91 |
(Days Est.) |
|
Surface Gravity (G Earth) |
1.3643 |
|
Star Radiation at Atmospheric Boundary: |
2629968.6 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
1797.3 |
(K) |
|
Blackbody T 0.3(K) |
1687.9 |
(K) |
|
Blackbody T 0.7(K) |
1365.7 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
2137.4 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
2007.3 |
(K) |
|
Size Class: |
sub-Jupiter-size |
|
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 J19101695+4331542 |
|
Alternate Name : |
7811211 |
|
Star Distance(LY) : |
5044.2 |
|
Stellar Radius(Rsun) : |
0.8 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
0.8 |
(Msun Measured) |
0.8 |
(Msun Estimated) |
|
Star Age : |
0.0 |
(GY) |
|
Temperature : |
5776 |
(K) |
|
Spectral type : |
G2 |
|
UV portion[%]: |
7.8 |
|
Visible portion[%]: |
44.8 |
|
IR portion[%]: |
47.4 |
|
Metalicity : |
-0.6 |
|
Absolute Magnitude: |
3.4 |
|
Apparent Magnitude: |
14.4 |
|
Right Ascension(RA) |
287.5706 |
|
Declination (DEC) |
43.5317 |
|
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+J19101695%2B4331542&submit=SIMBAD+search |
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Open Exoplanet Database Link |
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KOI-6918 b
KOI-6918 b
KOI-6918 b is an exoplanet orbiting the star 2MASS J19101695+4331542, located about 5044.2 light-years (1546.6 pc) away from Solar System. Its discovery was publicly announced on 2017.
The host star 2MASS J19101695+4331542 has apparent magnitude of 14.4, with absolute magnitude of 3.4. It is 0.8 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5776 with its spectral types of G2
In this planetary system, the extrasolar planet KOI-6918 b orbits around the star 2MASS J19101695+4331542 every 0.9 days with its orbital distance of 0.02 AU ( 2573083.4 km)
(Projected orbit of KOI-6918 b around its host star 2MASS J19101695+4331542)
The Star 2MASS J19101695+4331542 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.546 AU ( 81631811.3 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.754 AU ( 112836496.2 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 1.149 AU ( 171937849.6 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 1.691 AU ( 253014077.7 km)
Radiation at Planetary Boundary of KOI-6918 b : 2629968.57 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star 2MASS J19101695+4331542)
Kopparapu Recent Venus for Star 2MASS J19101695+4331542 distance : 0.566 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star 2MASS J19101695+4331542 distance : 0.716 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star 2MASS J19101695+4331542 distance : 0.692 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star 2MASS J19101695+4331542 distance : 0.758 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star 2MASS J19101695+4331542 distance : 1.265 AU
Kopparapu Outer Boundary for Early Mars for Star 2MASS J19101695+4331542 distance : 1.334 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star 2MASS J19101695+4331542)
Original Kopparapu Recent Venus for Star 2MASS J19101695+4331542 distance : 0.566 AU
Original Kopparapu Runaway Greenhouse for Star 2MASS J19101695+4331542 distance : 0.736 AU
Original Kopparapu Moist Greenhouse for Star 2MASS J19101695+4331542 distance : 0.749 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star 2MASS J19101695+4331542 distance : 1.287 AU
Original Kopparapu Outer Boundary for Early Mars for Star 2MASS J19101695+4331542 distance : 1.339 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star 2MASS J19101695+4331542)
(Position in Stellar Map of star 2MASS J19101695+4331542 and its Exoplanet KOI-6918 b)
(Zoomed position in Stellar Map of star 2MASS J19101695+4331542 and its Exoplanet KOI-6918 b (zoom level 3))
(Synthetic Spectrum of star 2MASS J19101695+4331542*)
*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
