|
Exoplanet Name : |
55 Cnc Af |
|
Alternate Name : |
rho1 Cnc Af |
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.2806 |
(Rjup) |
3.1456 |
(Rearth) |
|
Mass (Mjup / Me): |
0.1479 |
(Mjup) |
47.0230 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
0.7733 |
(AU) |
0.7733 |
(AU Est.) |
|
Eccentricity : |
0.0800 |
|
Orbital Period(Yrs) |
0.7143 |
|
Orbital Period(Observed/Estimated) |
260.91 |
(Days Obs.) |
261.81 |
(Days Est.) |
|
Surface Gravity (G Earth) |
4.7523 |
|
Star Radiation at Atmospheric Boundary: |
1444.8 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
275.2 |
(K) |
|
Blackbody T 0.3(K) |
258.4 |
(K) |
|
Blackbody T 0.7(K) |
209.1 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
327.2 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
307.3 |
(K) |
|
Size Class: |
Neptune-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 : |
55 Cnc A |
|
Alternate Name : |
"TOI-1773, HD 75732, GJ 324 A, rho1 Cnc A" |
|
Star Distance(LY) : |
41.0 |
|
Stellar Radius(Rsun) : |
1.0 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
0.9 |
(Msun Measured) |
0.9 |
(Msun Estimated) |
|
Star Age : |
10.2 |
(GY) |
|
Temperature : |
5250 |
(K) |
|
Spectral type : |
G8V |
|
UV portion[%]: |
5.4 |
|
Visible portion[%]: |
40.8 |
|
IR portion[%]: |
53.7 |
|
Metalicity : |
0.3 |
|
Absolute Magnitude: |
5.5 |
|
Apparent Magnitude: |
6.0 |
|
Right Ascension(RA) |
133.1542 |
|
Declination (DEC) |
28.3339 |
|
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 |
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55 Cnc Af
55 Cnc Af
55 Cnc Af is an exoplanet orbiting the star 55 Cnc A, located about 41.0 light-years (12.6 pc) away from Solar System. Its discovery was publicly announced on 2007.
The host star 55 Cnc A has apparent magnitude of 6.0, with absolute magnitude of 5.5. It is 0.9 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 5250 with its spectral types of G8V
In this planetary system, the extrasolar planet 55 Cnc Af orbits around the star 55 Cnc A every 260.9 days with its orbital distance of 0.77 AU ( 115684033.4 km)
(Projected orbit of 55 Cnc Af around its host star 55 Cnc A)
The Star 55 Cnc A 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.575 AU ( 86020706.7 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.795 AU ( 118903096.6 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 1.211 AU ( 181182006.1 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 1.782 AU ( 266617259.0 km)
Radiation at Planetary Boundary of 55 Cnc Af : 1444.77 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star 55 Cnc A)
Kopparapu Recent Venus for Star 55 Cnc A distance : 0.614 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star 55 Cnc A distance : 0.778 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star 55 Cnc A distance : 0.751 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star 55 Cnc A distance : 0.824 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star 55 Cnc A distance : 1.396 AU
Kopparapu Outer Boundary for Early Mars for Star 55 Cnc A distance : 1.473 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star 55 Cnc A)
Original Kopparapu Recent Venus for Star 55 Cnc A distance : 0.610 AU
Original Kopparapu Runaway Greenhouse for Star 55 Cnc A distance : 0.801 AU
Original Kopparapu Moist Greenhouse for Star 55 Cnc A distance : 0.807 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star 55 Cnc A distance : 1.420 AU
Original Kopparapu Outer Boundary for Early Mars for Star 55 Cnc A distance : 1.477 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star 55 Cnc A)
(Position in Stellar Map of star 55 Cnc A and its Exoplanet 55 Cnc Af)
(Zoomed position in Stellar Map of star 55 Cnc A and its Exoplanet 55 Cnc Af (zoom level 3))
(Synthetic Spectrum of star 55 Cnc A*)
*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
