|
Exoplanet Name : |
Kepler-278 b |
|
Alternate Name : |
"2MASS J19202572+3842080 b, K01221.01, KIC 3640905 b, KOI-1221 b, KOI-1221.01, WISE J192025.73+384208.1 b" |
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.3630 |
(Rjup) |
4.0689 |
(Rearth) |
|
Mass (Mjup / Me): |
0.1760 |
(Mjup) |
55.9571 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
0.2070 |
(AU) |
0.2070 |
(AU Est.) |
|
Eccentricity : |
0.6960 |
|
Orbital Period(Yrs) |
0.0826 |
|
Orbital Period(Observed/Estimated) |
30.16 |
(Days Obs.) |
0.00 |
(Days Est.) |
|
Surface Gravity (G Earth) |
3.3799 |
|
Star Radiation at Atmospheric Boundary: |
143486.7 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
868.7 |
(K) |
|
Blackbody T 0.3(K) |
815.8 |
(K) |
|
Blackbody T 0.7(K) |
660.0 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
1033.0 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
970.1 |
(K) |
|
Size Class: |
Neptune-size |
|
Mass Class: |
|
|
Detection Type : |
Primary Transit |
|
Mass Detection : |
TTV |
|
Radius Detection : |
Primary Transit |
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
|
Habitability by Kopparapu: |
Not habitable |
|
Star Name : |
Kepler-278 |
|
Alternate Name : |
"2MASS J19202572+3842080, KIC 3640905, KOI-1221, WISE J192025.73+384208.1" |
|
Star Distance(LY) : |
1376.2 |
|
Stellar Radius(Rsun) : |
2.8 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
0.0 |
(Msun Measured) |
1.3 |
(Msun Estimated) |
|
Star Age : |
0.0 |
(GY) |
|
Temperature : |
5002 |
(K) |
|
Spectral type : |
K2 |
|
UV portion[%]: |
3.2 |
|
Visible portion[%]: |
37.0 |
|
IR portion[%]: |
59.8 |
|
Metalicity : |
0.4 |
|
Absolute Magnitude: |
1.9 |
|
Apparent Magnitude: |
10.0 |
|
Right Ascension(RA) |
290.1072 |
|
Declination (DEC) |
38.7022 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
|
|
Discovered by |
|
|
Discovery Paper - Authors |
"Rowe,ason.; Bryson,tephen.; Marcy,eoffrey.; Lissauer,ack.; Jontof-Hutter,aniel; Mullally,ergal; Gilliland,onald.; Issacson,oward; Ford,ric; Howell,teve.; Borucki,illiam.; Haas,ichael; Huber,aniel; Steffen,ason.; Thompson,usan.; Quintana,lisa; Barclay,homas; Still,artin; Fortney,onathan; Gautier,..,II; Hunter,oger; Caldwell,ouglas.; Ciardi,avid.; Devore,dna; Cochran,illiam; Jenkins,on; Agol,ric; Carter,oshua.; Geary,ohn" |
|
Discovery Paper - Title |
Validation of Kepler's Multiple Planet Candidates. III. Light Curve Analysis and Announcement of Hundreds of New Multi-planet Systems |
|
Discovery Paper - Journal |
0 |
|
Discovery Paper - URL |
0 |
|
SIMBAD LINK |
http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-278+&submit=SIMBAD+search |
|
Open Exoplanet Database Link |
http://www.openexoplanetcatalogue.com/planet/Kepler-278%20b/ |
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Kepler-278 b
Kepler-278 b
Kepler-278 b is an exoplanet orbiting the star Kepler-278, located about 1376.2 light-years (421.9 pc) away from Solar System. Its discovery was publicly announced on 2014.
The host star Kepler-278 has apparent magnitude of 10.0, with absolute magnitude of 1.9.
In this planetary system, the extrasolar planet Kepler-278 b orbits around the star Kepler-278 every 30.2 days with its orbital distance of 0.21 AU ( 30966759.2 km)
(Projected orbit of Kepler-278 b around its host star Kepler-278)
The Star Kepler-278 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 1.534 AU ( 229473174.0 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 2.120 AU ( 317191895.0 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 3.231 AU ( 483330253.6 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 4.754 AU ( 711241641.5 km)
Radiation at Planetary Boundary of Kepler-278 b : 143486.73 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-278)
Kopparapu Recent Venus for Star Kepler-278 distance : 1.659 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-278 distance : 2.101 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-278 distance : 2.029 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-278 distance : 2.227 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-278 distance : 3.807 AU
Kopparapu Outer Boundary for Early Mars for Star Kepler-278 distance : 4.016 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-278)
Original Kopparapu Recent Venus for Star Kepler-278 distance : 1.642 AU
Original Kopparapu Runaway Greenhouse for Star Kepler-278 distance : 2.165 AU
Original Kopparapu Moist Greenhouse for Star Kepler-278 distance : 2.172 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-278 distance : 3.871 AU
Original Kopparapu Outer Boundary for Early Mars for Star Kepler-278 distance : 4.026 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-278)
(Position in Stellar Map of star Kepler-278 and its Exoplanet Kepler-278 b)
(Zoomed position in Stellar Map of star Kepler-278 and its Exoplanet Kepler-278 b (zoom level 3))
(Synthetic Spectrum of star Kepler-278*)
*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
