|
Exoplanet Name : |
Kepler-397 c |
|
Alternate Name : |
"2MASS J19433458+4222496 c, K02681.01, KIC 6878240 c, KOI-2681 c, KOI-2681.01, WISE J194334.59+422249.5 c" |
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.5510 |
(Rjup) |
6.1762 |
(Rearth) |
|
Mass (Mjup / Me): |
0.1640 |
(Mjup) |
52.1346 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
0.4800 |
(AU) |
0.4800 |
(AU Est.) |
|
Eccentricity : |
0.0000 |
|
Orbital Period(Yrs) |
0.3710 |
|
Orbital Period(Observed/Estimated) |
135.50 |
(Days Obs.) |
0.00 |
(Days Est.) |
|
Surface Gravity (G Earth) |
1.3668 |
|
Star Radiation at Atmospheric Boundary: |
2419.4 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
313.0 |
(K) |
|
Blackbody T 0.3(K) |
294.0 |
(K) |
|
Blackbody T 0.7(K) |
237.8 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
372.2 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
349.6 |
(K) |
|
Size Class: |
sub-Jupiter-size |
|
Mass Class: |
|
|
Detection Type : |
Primary Transit |
|
Mass Detection : |
|
|
Radius Detection : |
|
|
Habitability by Solar Eq. Astronomical Unit: |
Habitable |
|
Habitability by Kopparapu: |
Not habitable |
|
Star Name : |
Kepler-397 |
|
Alternate Name : |
"2MASS J19433458+4222496, KIC 6878240, KOI-2681, WISE J194334.59+422249.5" |
|
Star Distance(LY) : |
2640.2 |
|
Stellar Radius(Rsun) : |
0.8 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
0.0 |
(Msun Measured) |
0.8 |
(Msun Estimated) |
|
Star Age : |
0.0 |
(GY) |
|
Temperature : |
5307 |
(K) |
|
Spectral type : |
K0 |
|
UV portion[%]: |
5.8 |
|
Visible portion[%]: |
41.5 |
|
IR portion[%]: |
52.6 |
|
Metalicity : |
-0.0 |
|
Absolute Magnitude: |
5.0 |
|
Apparent Magnitude: |
14.6 |
|
Right Ascension(RA) |
295.8941 |
|
Declination (DEC) |
42.3805 |
|
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=Kepler-397+&submit=SIMBAD+search |
|
Open Exoplanet Database Link |
http://www.openexoplanetcatalogue.com/planet/Kepler-397%20c/ |
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Kepler-397 c
Kepler-397 c
Kepler-397 c is an exoplanet orbiting the star Kepler-397, located about 2640.2 light-years (809.5 pc) away from Solar System. Its discovery was publicly announced on 2014.
The host star Kepler-397 has apparent magnitude of 14.6, with absolute magnitude of 5.0.
In this planetary system, the extrasolar planet Kepler-397 c orbits around the star Kepler-397 every 135.5 days with its orbital distance of 0.48 AU ( 71806977.9 km)
(Projected orbit of Kepler-397 c around its host star Kepler-397)
The Star Kepler-397 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.462 AU ( 69095882.4 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.638 AU ( 95508566.3 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 0.973 AU ( 145533919.1 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 1.432 AU ( 214159537.4 km)
Radiation at Planetary Boundary of Kepler-397 c : 2419.42 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-397)
Kopparapu Recent Venus for Star Kepler-397 distance : 0.492 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-397 distance : 0.623 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-397 distance : 0.602 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-397 distance : 0.660 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-397 distance : 1.116 AU
Kopparapu Outer Boundary for Early Mars for Star Kepler-397 distance : 1.177 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-397)
Original Kopparapu Recent Venus for Star Kepler-397 distance : 0.489 AU
Original Kopparapu Runaway Greenhouse for Star Kepler-397 distance : 0.641 AU
Original Kopparapu Moist Greenhouse for Star Kepler-397 distance : 0.646 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-397 distance : 1.135 AU
Original Kopparapu Outer Boundary for Early Mars for Star Kepler-397 distance : 1.180 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-397)
(Position in Stellar Map of star Kepler-397 and its Exoplanet Kepler-397 c)
(Zoomed position in Stellar Map of star Kepler-397 and its Exoplanet Kepler-397 c (zoom level 3))
(Synthetic Spectrum of star Kepler-397*)
*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
