Exoplanet Name : |
HD 80653 c |
Alternate Name : |
K2-312 c |
Status : |
Confirmed |
Radius (Rjup / Re): |
0.9078 |
(Rjup) |
10.1759 |
(Rearth) |
Mass (Mjup / Me): |
5.4100 |
(Mjup) |
1720.0446 |
(Mearth) |
Semi Major Axis / Orbital Distance Calculated |
1.9610 |
(AU) |
1.9610 |
(AU Est.) |
Eccentricity : |
0.8530 |
Orbital Period(Yrs) |
2.5220 |
Orbital Period(Observed/Estimated) |
921.20 |
(Days Obs.) |
923.35 |
(Days Est.) |
Surface Gravity (G Earth) |
16.6110 |
Star Radiation at Atmospheric Boundary: |
594.9 |
(W/m2) |
Measured Temperature (K) |
0.0 |
(K) |
Blackbody T 0.1(K) |
220.4 |
(K) |
Blackbody T 0.3(K) |
207.0 |
(K) |
Blackbody T 0.7(K) |
167.5 |
(K) |
Tidally Locked Blackbody T 0.1(K) |
262.1 |
(K) |
Tidally Locked Blackbody T 0.3(K) |
246.2 |
(K) |
Size Class: |
Jupiter-size |
Mass Class: |
|
Detection Type : |
Radial Velocity |
Mass Detection : |
Radial Velocity |
Radius Detection : |
|
Habitability by Solar Eq. Astronomical Unit: |
Habitable |
Habitability by Kopparapu: |
Not habitable |
Star Name : |
HD 80653 |
Alternate Name : |
"2MASS J09212142+1422046, EPIC 251279430, K2-312, TIC 55315929, TYC 825-1097-1, WISE J092121.39+142204.3" |
Star Distance(LY) : |
358.3 |
Stellar Radius(Rsun) : |
1.2 |
(Rsun Measured) |
Stellar Mass(Msun) : |
1.2 |
(Msun Measured) |
1.2 |
(Msun Estimated) |
Star Age : |
2.7 |
(GY) |
Temperature : |
5950 |
(K) |
Spectral type : |
G2 |
UV portion[%]: |
0.3 |
Visible portion[%]: |
1.5 |
IR portion[%]: |
98.2 |
Metalicity : |
0.3 |
Absolute Magnitude: |
4.3 |
Apparent Magnitude: |
9.5 |
Right Ascension(RA) |
140.3392 |
Declination (DEC) |
14.3679 |
Hubble Space Telescope Guide Star Catalog (GSC) ID |
|
Discovered by |
|
Discovery Paper - Authors |
|
Discovery Paper - Title |
|
Discovery Paper - Journal |
|
Discovery Paper - URL |
|
SIMBAD LINK |
|
Open Exoplanet Database Link |
|
![](HD_80653_c_CSun.png) |
![](HD_80653_c_CJup.png) |
![](HD_80653_c_CNep.png) |
![](HD_80653_c_CEar.png) |
/
HD 80653 c
HD 80653 c
HD 80653 c is an exoplanet orbiting the star HD 80653, located about 358.3 light-years (109.9 pc) away from Solar System. Its discovery was publicly announced on 2023.
The host star HD 80653 has apparent magnitude of 9.5, with absolute magnitude of 4.3. It is 1.2 times more massive and 1.2 times bigger compared with our Sun. The surface temperature is 5950 with its spectral types of G2
In this planetary system, the extrasolar planet HD 80653 c orbits around the star HD 80653 every 921.2 days with its orbital distance of 1.96 AU ( 293361424.4 km)
(Projected orbit of HD 80653 c around its host star HD 80653)
![](HD_80653_c_Orb.png)
The Star HD 80653 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.936 AU ( 139975450.7 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 1.293 AU ( 193482652.9 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 1.971 AU ( 294824745.3 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 2.900 AU ( 433847528.2 km)
Radiation at Planetary Boundary of HD 80653 c : 594.89 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 80653)
![](HD_80653_c_OrbH.png)
Kopparapu Recent Venus for Star HD 80653 distance : 0.960 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 80653 distance : 1.215 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 80653 distance : 1.174 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 80653 distance : 1.287 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 80653 distance : 2.137 AU
Kopparapu Outer Boundary for Early Mars for Star HD 80653 distance : 2.254 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 80653)
![](HD_80653_c_OrbK.png)
Original Kopparapu Recent Venus for Star HD 80653 distance : 0.964 AU
Original Kopparapu Runaway Greenhouse for Star HD 80653 distance : 1.248 AU
Original Kopparapu Moist Greenhouse for Star HD 80653 distance : 1.276 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 80653 distance : 2.175 AU
Original Kopparapu Outer Boundary for Early Mars for Star HD 80653 distance : 2.262 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 80653)
![](HD_80653_c_OrbKO.png)
(Position in Stellar Map of star HD 80653 and its Exoplanet HD 80653 c)
![](HD_80653_c_STZ0.png)
(Zoomed position in Stellar Map of star HD 80653 and its Exoplanet HD 80653 c (zoom level 3))
![](HD_80653_c_STZ3.png)
(Synthetic Spectrum of star HD 80653*)
![](HD_80653_c_Spc.png)
*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