|
Exoplanet Name : |
55 Cnc b |
|
Alternate Name : |
|
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.9078 |
(Rjup) |
10.1759 |
(Rearth) |
|
Mass (Mjup / Me): |
0.8400 |
(Mjup) |
267.0679 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
0.1134 |
(AU) |
0.1134 |
(AU Est.) |
|
Eccentricity : |
0.0023 |
|
Orbital Period(Yrs) |
0.0401 |
|
Orbital Period(Observed/Estimated) |
14.65 |
(Days Obs.) |
14.66 |
(Days Est.) |
|
Surface Gravity (G Earth) |
2.5792 |
|
Star Radiation at Atmospheric Boundary: |
61823.7 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
703.8 |
(K) |
|
Blackbody T 0.3(K) |
660.9 |
(K) |
|
Blackbody T 0.7(K) |
534.8 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
836.9 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
786.0 |
(K) |
|
Size Class: |
Jupiter-size |
|
Mass Class: |
|
|
Detection Type : |
Radial Velocity |
|
Mass Detection : |
Radial Velocity |
|
Radius Detection : |
|
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
|
Habitability by Kopparapu: |
Not habitable |
|
Star Name : |
55 Cnc |
|
Alternate Name : |
|
|
Star Distance(LY) : |
40.2 |
|
Stellar Radius(Rsun) : |
0.9 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
0.9 |
(Msun Measured) |
0.9 |
(Msun Estimated) |
|
Star Age : |
10.2 |
(GY) |
|
Temperature : |
5196 |
(K) |
|
Spectral type : |
K0IV-V |
|
UV portion[%]: |
5.0 |
|
Visible portion[%]: |
40.1 |
|
IR portion[%]: |
55.0 |
|
Metalicity : |
0.3 |
|
Absolute Magnitude: |
5.5 |
|
Apparent Magnitude: |
6.0 |
|
Right Ascension(RA) |
133.1492 |
|
Declination (DEC) |
28.3339 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
|
|
Discovered by |
|
|
Discovery Paper - Authors |
VAN BELLE G.T.; VON BRAUN K. |
|
Discovery Paper - Title |
Directly determined linear radii and effective temperatures of exoplanet host stars. |
|
Discovery Paper - Journal |
"The Astrophysical Journal,olume 694,umber 2" |
|
Discovery Paper - URL |
http://iopscience.iop.org/article/10.1088/0004-637X/694/2/1085/meta |
|
SIMBAD LINK |
http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=55+Cnc+&submit=SIMBAD+search |
|
Open Exoplanet Database Link |
http://www.openexoplanetcatalogue.com/planet/55%20Cnc%20b/ |
 |
 |
 |
 |
/
55 Cnc b
55 Cnc b
55 Cnc b is an exoplanet orbiting the star 55 Cnc, located about 40.2 light-years (12.3 pc) away from Solar System. Its discovery was publicly announced on 1996.
The host star 55 Cnc has apparent magnitude of 6.0, with absolute magnitude of 5.5. It is 0.9 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5196 with its spectral types of K0IV-V
In this planetary system, the extrasolar planet 55 Cnc b orbits around the star 55 Cnc every 14.7 days with its orbital distance of 0.11 AU ( 16962902.6 km)
(Projected orbit of 55 Cnc b around its host star 55 Cnc)
The Star 55 Cnc 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.552 AU ( 82510285.5 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.762 AU ( 114050777.1 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 1.162 AU ( 173788144.9 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 1.709 AU ( 255736868.5 km)
Radiation at Planetary Boundary of 55 Cnc b : 61823.74 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star 55 Cnc)
Kopparapu Recent Venus for Star 55 Cnc distance : 0.591 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star 55 Cnc distance : 0.748 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star 55 Cnc distance : 0.723 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star 55 Cnc distance : 0.793 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star 55 Cnc distance : 1.346 AU
Kopparapu Outer Boundary for Early Mars for Star 55 Cnc distance : 1.419 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star 55 Cnc)
Original Kopparapu Recent Venus for Star 55 Cnc distance : 0.586 AU
Original Kopparapu Runaway Greenhouse for Star 55 Cnc distance : 0.770 AU
Original Kopparapu Moist Greenhouse for Star 55 Cnc distance : 0.775 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star 55 Cnc distance : 1.369 AU
Original Kopparapu Outer Boundary for Early Mars for Star 55 Cnc distance : 1.423 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star 55 Cnc)
(Position in Stellar Map of star 55 Cnc and its Exoplanet 55 Cnc b)
(Zoomed position in Stellar Map of star 55 Cnc and its Exoplanet 55 Cnc b (zoom level 3))
(Synthetic Spectrum of star 55 Cnc*)
*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
