|
Exoplanet Name : |
eta Cet b |
|
Alternate Name : |
|
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.9078 |
(Rjup) |
10.1759 |
(Rearth) |
|
Mass (Mjup / Me): |
2.5500 |
(Mjup) |
810.7419 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
1.2700 |
(AU) |
1.2700 |
(AU Est.) |
|
Eccentricity : |
0.1300 |
|
Orbital Period(Yrs) |
1.1047 |
|
Orbital Period(Observed/Estimated) |
403.50 |
(Days Obs.) |
400.93 |
(Days Est.) |
|
Surface Gravity (G Earth) |
7.8296 |
|
Star Radiation at Atmospheric Boundary: |
65357.5 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
713.6 |
(K) |
|
Blackbody T 0.3(K) |
670.2 |
(K) |
|
Blackbody T 0.7(K) |
542.2 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
848.6 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
797.0 |
(K) |
|
Size Class: |
Jupiter-size |
|
Mass Class: |
|
|
Detection Type : |
Radial Velocity |
|
Mass Detection : |
|
|
Radius Detection : |
|
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
|
Habitability by Kopparapu: |
Not habitable |
|
Star Name : |
eta Cet |
|
Alternate Name : |
|
|
Star Distance(LY) : |
123.9 |
|
Stellar Radius(Rsun) : |
14.3 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
1.7 |
(Msun Measured) |
1.7 |
(Msun Estimated) |
|
Star Age : |
0.0 |
(GY) |
|
Temperature : |
4528 |
(K) |
|
Spectral type : |
K1III |
|
UV portion[%]: |
1.7 |
|
Visible portion[%]: |
31.6 |
|
IR portion[%]: |
66.8 |
|
Metalicity : |
0.1 |
|
Absolute Magnitude: |
0.6 |
|
Apparent Magnitude: |
3.5 |
|
Right Ascension(RA) |
17.1475 |
|
Declination (DEC) |
-10.1822 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
|
|
Discovered by |
|
|
Discovery Paper - Authors |
"Trifon Trifonov, Sabine Reffert, Xianyu Tan, Man Hoi Lee, Andreas Quirrenbach" |
|
Discovery Paper - Title |
Precise radial velocities of giant stars VI. A possible 2:1 resonant planet pair around the K giant star¥¹¥̣¥»¤et |
|
Discovery Paper - Journal |
0 |
|
Discovery Paper - URL |
0 |
|
SIMBAD LINK |
http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=eta+Cet+&submit=SIMBAD+search |
|
Open Exoplanet Database Link |
http://www.openexoplanetcatalogue.com/planet/eta%20Cet%20b/ |
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eta Cet b
eta Cet b
eta Cet b is an exoplanet orbiting the star eta Cet, located about 123.9 light-years (38.0 pc) away from Solar System. Its discovery was publicly announced on 2014.
The host star eta Cet has apparent magnitude of 3.5, with absolute magnitude of 0.6. It is 1.7 times more massive and 14.3 times bigger compared with our Sun. The surface temperature is 4528 with its spectral types of K1III
In this planetary system, the extrasolar planet eta Cet b orbits around the star eta Cet every 403.5 days with its orbital distance of 1.27 AU ( 189989295.8 km)
(Projected orbit of eta Cet b around its host star eta Cet)
The Star eta Cet 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 6.352 AU ( 950182409.8 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 8.780 AU ( 1313400402.6 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 13.378 AU ( 2001331558.7 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 19.686 AU ( 2945047061.4 km)
Radiation at Planetary Boundary of eta Cet b : 65357.45 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star eta Cet)
Kopparapu Recent Venus for Star eta Cet distance : 7.008 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star eta Cet distance : 8.872 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star eta Cet distance : 8.569 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star eta Cet distance : 9.411 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star eta Cet distance : 16.412 AU
Kopparapu Outer Boundary for Early Mars for Star eta Cet distance : 17.313 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star eta Cet)
Original Kopparapu Recent Venus for Star eta Cet distance : 6.915 AU
Original Kopparapu Runaway Greenhouse for Star eta Cet distance : 9.158 AU
Original Kopparapu Moist Greenhouse for Star eta Cet distance : 9.150 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star eta Cet distance : 16.680 AU
Original Kopparapu Outer Boundary for Early Mars for Star eta Cet distance : 17.347 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star eta Cet)
(Position in Stellar Map of star eta Cet and its Exoplanet eta Cet b)
(Zoomed position in Stellar Map of star eta Cet and its Exoplanet eta Cet b (zoom level 3))
(Synthetic Spectrum of star eta Cet*)
*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
