|
Exoplanet Name : |
Eps Ret Ab |
|
Alternate Name : |
HD 27442 b |
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.9078 |
(Rjup) |
10.1759 |
(Rearth) |
|
Mass (Mjup / Me): |
1.3500 |
(Mjup) |
429.2163 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
1.1600 |
(AU) |
1.1600 |
(AU Est.) |
|
Eccentricity : |
0.0580 |
|
Orbital Period(Yrs) |
1.1367 |
|
Orbital Period(Observed/Estimated) |
415.20 |
(Days Obs.) |
416.57 |
(Days Est.) |
|
Surface Gravity (G Earth) |
4.1451 |
|
Star Radiation at Atmospheric Boundary: |
20192.3 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
532.0 |
(K) |
|
Blackbody T 0.3(K) |
499.6 |
(K) |
|
Blackbody T 0.7(K) |
404.3 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
632.7 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
594.2 |
(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 : |
eps Ret A |
|
Alternate Name : |
"HD 27442, HR 1355" |
|
Star Distance(LY) : |
59.0 |
|
Stellar Radius(Rsun) : |
6.6 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
1.2 |
(Msun Measured) |
1.2 |
(Msun Estimated) |
|
Star Age : |
7.2 |
(GY) |
|
Temperature : |
4749 |
(K) |
|
Spectral type : |
K2IIII-Va |
|
UV portion[%]: |
2.3 |
|
Visible portion[%]: |
34.9 |
|
IR portion[%]: |
62.8 |
|
Metalicity : |
0.2 |
|
Absolute Magnitude: |
3.2 |
|
Apparent Magnitude: |
4.4 |
|
Right Ascension(RA) |
64.1208 |
|
Declination (DEC) |
-59.3019 |
|
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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 |
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Eps Ret Ab
Eps Ret Ab
Eps Ret Ab is an exoplanet orbiting the star eps Ret A, located about 59.0 light-years (18.1 pc) away from Solar System. Its discovery was publicly announced on 2000.
The host star eps Ret A has apparent magnitude of 4.4, with absolute magnitude of 3.2. It is 1.2 times more massive and 6.6 times bigger compared with our Sun. The surface temperature is 4749 with its spectral types of K2IIII-Va
In this planetary system, the extrasolar planet Eps Ret Ab orbits around the star eps Ret A every 415.2 days with its orbital distance of 1.16 AU ( 173533530.0 km)
(Projected orbit of Eps Ret Ab around its host star eps Ret A)
The Star eps Ret A 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 3.225 AU ( 482398987.0 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 4.457 AU ( 666801466.0 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 6.792 AU ( 1016057871.3 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 9.995 AU ( 1495173668.3 km)
Radiation at Planetary Boundary of Eps Ret Ab : 20192.28 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star eps Ret A)
Kopparapu Recent Venus for Star eps Ret A distance : 3.528 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star eps Ret A distance : 4.466 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star eps Ret A distance : 4.314 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star eps Ret A distance : 4.736 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star eps Ret A distance : 8.180 AU
Kopparapu Outer Boundary for Early Mars for Star eps Ret A distance : 8.629 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star eps Ret A)
Original Kopparapu Recent Venus for Star eps Ret A distance : 3.484 AU
Original Kopparapu Runaway Greenhouse for Star eps Ret A distance : 4.607 AU
Original Kopparapu Moist Greenhouse for Star eps Ret A distance : 4.610 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star eps Ret A distance : 8.315 AU
Original Kopparapu Outer Boundary for Early Mars for Star eps Ret A distance : 8.648 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star eps Ret A)
(Position in Stellar Map of star eps Ret A and its Exoplanet Eps Ret Ab)
(Zoomed position in Stellar Map of star eps Ret A and its Exoplanet Eps Ret Ab (zoom level 3))
(Synthetic Spectrum of star eps Ret 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
