|
Exoplanet Name : |
CD Cet b |
|
Alternate Name : |
GJ 1057 |
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.1284 |
(Rjup) |
1.4394 |
(Rearth) |
|
Mass (Mjup / Me): |
0.0124 |
(Mjup) |
3.9551 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
0.0185 |
(AU) |
0.0185 |
(AU Est.) |
|
Eccentricity : |
0.0000 |
|
Orbital Period(Yrs) |
0.0063 |
|
Orbital Period(Observed/Estimated) |
2.29 |
(Days Obs.) |
2.29 |
(Days Est.) |
|
Surface Gravity (G Earth) |
1.9090 |
|
Star Radiation at Atmospheric Boundary: |
10532.1 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
452.1 |
(K) |
|
Blackbody T 0.3(K) |
424.6 |
(K) |
|
Blackbody T 0.7(K) |
343.6 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
537.7 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
504.9 |
(K) |
|
Size Class: |
super-Earth-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 : |
CD Cet |
|
Alternate Name : |
GJ 1057 |
|
Star Distance(LY) : |
28.1 |
|
Stellar Radius(Rsun) : |
0.2 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
0.2 |
(Msun Measured) |
0.2 |
(Msun Estimated) |
|
Star Age : |
3.0 |
(GY) |
|
Temperature : |
3130 |
(K) |
|
Spectral type : |
M5.0 |
|
UV portion[%]: |
0.2 |
|
Visible portion[%]: |
7.0 |
|
IR portion[%]: |
92.8 |
|
Metalicity : |
0.1 |
|
Absolute Magnitude: |
12.3 |
|
Apparent Magnitude: |
12.0 |
|
Right Ascension(RA) |
48.3455 |
|
Declination (DEC) |
4.7747 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
00059-00616 |
|
Discovered by |
|
|
Discovery Paper - Authors |
|
|
Discovery Paper - Title |
|
|
Discovery Paper - Journal |
|
|
Discovery Paper - URL |
|
|
SIMBAD LINK |
http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=CD+Cet+&submit=SIMBAD+search |
|
Open Exoplanet Database Link |
|
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CD Cet b
CD Cet b
CD Cet b is an exoplanet orbiting the star CD Cet, located about 28.1 light-years ( 8.6 pc) away from Solar System. Its discovery was publicly announced on 2020.
The host star CD Cet has apparent magnitude of 12.0, with absolute magnitude of 12.3. It is 0.2 times more massive and 0.2 times bigger compared with our Sun. The surface temperature is 3130 with its spectral types of M5.0
In this planetary system, the extrasolar planet CD Cet b orbits around the star CD Cet every 2.3 days with its orbital distance of 0.02 AU ( 2767560.6 km)
(Projected orbit of CD Cet b around its host star CD Cet)
The Star CD Cet 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 0.037 AU ( 5556289.1 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 0.051 AU ( 7680243.6 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 0.078 AU ( 11702991.6 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 0.115 AU ( 17221464.8 km)
Radiation at Planetary Boundary of CD Cet b : 10532.10 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star CD Cet)
Kopparapu Recent Venus for Star CD Cet distance : 0.042 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star CD Cet distance : 0.053 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star CD Cet distance : 0.051 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star CD Cet distance : 0.057 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star CD Cet distance : 0.106 AU
Kopparapu Outer Boundary for Early Mars for Star CD Cet distance : 0.111 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star CD Cet)
Original Kopparapu Recent Venus for Star CD Cet distance : 0.042 AU
Original Kopparapu Runaway Greenhouse for Star CD Cet distance : 0.055 AU
Original Kopparapu Moist Greenhouse for Star CD Cet distance : 0.055 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star CD Cet distance : 0.107 AU
Original Kopparapu Outer Boundary for Early Mars for Star CD Cet distance : 0.112 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star CD Cet)
(Position in Stellar Map of star CD Cet and its Exoplanet CD Cet b)
(Zoomed position in Stellar Map of star CD Cet and its Exoplanet CD Cet b (zoom level 3))
(Synthetic Spectrum of star CD 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
