|
Exoplanet Name : |
alf Ari b |
|
Alternate Name : |
|
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.9078 |
(Rjup) |
10.1759 |
(Rearth) |
|
Mass (Mjup / Me): |
1.8000 |
(Mjup) |
572.2884 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
1.2000 |
(AU) |
1.2000 |
(AU Est.) |
|
Eccentricity : |
0.2500 |
|
Orbital Period(Yrs) |
1.0425 |
|
Orbital Period(Observed/Estimated) |
380.80 |
(Days Obs.) |
392.03 |
(Days Est.) |
|
Surface Gravity (G Earth) |
5.5268 |
|
Star Radiation at Atmospheric Boundary: |
70707.0 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
727.8 |
(K) |
|
Blackbody T 0.3(K) |
683.5 |
(K) |
|
Blackbody T 0.7(K) |
553.0 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
865.5 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
812.8 |
(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 : |
alf Ari |
|
Alternate Name : |
|
|
Star Distance(LY) : |
65.8 |
|
Stellar Radius(Rsun) : |
13.9 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
1.5 |
(Msun Measured) |
1.6 |
(Msun Estimated) |
|
Star Age : |
0.0 |
(GY) |
|
Temperature : |
4553 |
(K) |
|
Spectral type : |
K2III |
|
UV portion[%]: |
1.7 |
|
Visible portion[%]: |
32.0 |
|
IR portion[%]: |
66.3 |
|
Metalicity : |
-0.1 |
|
Absolute Magnitude: |
0.5 |
|
Apparent Magnitude: |
2.0 |
|
Right Ascension(RA) |
31.7934 |
|
Declination (DEC) |
23.4622 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
01758-02416 |
|
Discovered by |
|
|
Discovery Paper - Authors |
"Lee,.-C.; Mkrtichian,..; Han,.; Kim,.-M.; Park,.-G." |
|
Discovery Paper - Title |
A likely exoplanet orbiting the oscillating K-giant ¥¹¥ò¥» Arietis |
|
Discovery Paper - Journal |
"A&A 529, A134 (2011) https://doi.org/10.1051/0004-6361/201016293" |
|
Discovery Paper - URL |
http://www.aanda.org/articles/aa/full_html/2011/05/aa16293-10/aa16293-10.html |
|
SIMBAD LINK |
http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=alf+Ari+&submit=SIMBAD+search |
|
Open Exoplanet Database Link |
http://www.openexoplanetcatalogue.com/planet/alf%20Ari%20b/ |
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alf Ari b
alf Ari b
alf Ari b is an exoplanet orbiting the star alf Ari, located about 65.8 light-years (20.2 pc) away from Solar System. Its discovery was publicly announced on 2011.
The host star alf Ari has apparent magnitude of 2.0, with absolute magnitude of 0.5. It is 1.5 times more massive and 13.9 times bigger compared with our Sun. The surface temperature is 4553 with its spectral types of K2III
In this planetary system, the extrasolar planet alf Ari b orbits around the star alf Ari every 380.8 days with its orbital distance of 1.20 AU ( 179517444.8 km)
(Projected orbit of alf Ari b around its host star alf Ari)
The Star alf Ari 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 6.242 AU ( 933830841.8 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 8.628 AU ( 1290798262.5 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 13.148 AU ( 1966890899.0 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 19.348 AU ( 2894366121.8 km)
Radiation at Planetary Boundary of alf Ari b : 70707.02 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star alf Ari)
Kopparapu Recent Venus for Star alf Ari distance : 6.882 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star alf Ari distance : 8.712 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star alf Ari distance : 8.414 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star alf Ari distance : 9.240 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star alf Ari distance : 16.097 AU
Kopparapu Outer Boundary for Early Mars for Star alf Ari distance : 16.980 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star alf Ari)
Original Kopparapu Recent Venus for Star alf Ari distance : 6.791 AU
Original Kopparapu Runaway Greenhouse for Star alf Ari distance : 8.992 AU
Original Kopparapu Moist Greenhouse for Star alf Ari distance : 8.985 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star alf Ari distance : 16.360 AU
Original Kopparapu Outer Boundary for Early Mars for Star alf Ari distance : 17.014 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star alf Ari)
(Position in Stellar Map of star alf Ari and its Exoplanet alf Ari b)
(Zoomed position in Stellar Map of star alf Ari and its Exoplanet alf Ari b (zoom level 3))
(Synthetic Spectrum of star alf Ari*)
*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
