Exoplanet Name : |
DoAr 21 (AB)b |
Alternate Name : |
|
Status : |
Confirmed |
Radius (Rjup / Re): |
0.9078 |
(Rjup) |
10.1759 |
(Rearth) |
Mass (Mjup / Me): |
35.6000 |
(Mjup) |
11318.5928 |
(Mearth) |
Semi Major Axis / Orbital Distance Calculated |
1.5500 |
(AU) |
1.5500 |
(AU Est.) |
Eccentricity : |
0.0890 |
Orbital Period(Yrs) |
1.2344 |
Orbital Period(Observed/Estimated) |
450.88 |
(Days Obs.) |
493.48 |
(Days Est.) |
Surface Gravity (G Earth) |
109.3074 |
Star Radiation at Atmospheric Boundary: |
5603.4 |
(W/m2) |
Measured Temperature (K) |
0.0 |
(K) |
Blackbody T 0.1(K) |
386.1 |
(K) |
Blackbody T 0.3(K) |
362.6 |
(K) |
Blackbody T 0.7(K) |
293.4 |
(K) |
Tidally Locked Blackbody T 0.1(K) |
459.2 |
(K) |
Tidally Locked Blackbody T 0.3(K) |
431.2 |
(K) |
Size Class: |
Jupiter-size |
Mass Class: |
|
Detection Type : |
Astrometry |
Mass Detection : |
Astrometry |
Radius Detection : |
|
Habitability by Solar Eq. Astronomical Unit: |
Not habitable |
Habitability by Kopparapu: |
Not habitable |
Star Name : |
DoAr 21 (AB) |
Alternate Name : |
"*V2246 Oph, Haro 1-6, ISO-Oph 10, EPIC 203924502" |
Star Distance(LY) : |
439.0 |
Stellar Radius(Rsun) : |
4.1 |
(Rsun Measured) |
Stellar Mass(Msun) : |
2.0 |
(Msun Measured) |
2.4 |
(Msun Estimated) |
Star Age : |
0.0 |
(GY) |
Temperature : |
5080 |
(K) |
Spectral type : |
K0 + M3 |
UV portion[%]: |
3.8 |
Visible portion[%]: |
38.1 |
IR portion[%]: |
58.1 |
Metalicity : |
0.0 |
Absolute Magnitude: |
8.4 |
Apparent Magnitude: |
14.0 |
Right Ascension(RA) |
246.5125 |
Declination (DEC) |
-24.3933 |
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 |
|
![](DoAr_21_(AB)b_CSun.png) |
![](DoAr_21_(AB)b_CJup.png) |
![](DoAr_21_(AB)b_CNep.png) |
![](DoAr_21_(AB)b_CEar.png) |
/
DoAr 21 (AB)b
DoAr 21 (AB)b
DoAr 21 (AB)b is an exoplanet orbiting the star DoAr 21 (AB), located about 439.0 light-years (134.6 pc) away from Solar System. Its discovery was publicly announced on 2019.
The host star DoAr 21 (AB) has apparent magnitude of 14.0, with absolute magnitude of 8.4. It is 2.0 times more massive and 4.1 times bigger compared with our Sun. The surface temperature is 5080 with its spectral types of K0 + M3
In this planetary system, the extrasolar planet DoAr 21 (AB)b orbits around the star DoAr 21 (AB) every 450.9 days with its orbital distance of 1.55 AU ( 231876699.6 km)
(Projected orbit of DoAr 21 (AB)b around its host star DoAr 21 (AB))
![](DoAr_21_(AB)b_Orb.png)
The Star DoAr 21 (AB) 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 2.270 AU ( 339556126.4 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 3.137 AU ( 469355303.3 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 4.781 AU ( 715193614.2 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 7.035 AU ( 1052438733.9 km)
Radiation at Planetary Boundary of DoAr 21 (AB)b : 5603.36 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star DoAr 21 (AB))
![](DoAr_21_(AB)b_OrbH.png)
Kopparapu Recent Venus for Star DoAr 21 (AB) distance : 2.446 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star DoAr 21 (AB) distance : 3.097 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star DoAr 21 (AB) distance : 2.991 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star DoAr 21 (AB) distance : 3.282 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star DoAr 21 (AB) distance : 5.595 AU
Kopparapu Outer Boundary for Early Mars for Star DoAr 21 (AB) distance : 5.902 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star DoAr 21 (AB))
![](DoAr_21_(AB)b_OrbK.png)
Original Kopparapu Recent Venus for Star DoAr 21 (AB) distance : 2.422 AU
Original Kopparapu Runaway Greenhouse for Star DoAr 21 (AB) distance : 3.190 AU
Original Kopparapu Moist Greenhouse for Star DoAr 21 (AB) distance : 3.205 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star DoAr 21 (AB) distance : 5.690 AU
Original Kopparapu Outer Boundary for Early Mars for Star DoAr 21 (AB) distance : 5.917 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star DoAr 21 (AB))
![](DoAr_21_(AB)b_OrbKO.png)
(Position in Stellar Map of star DoAr 21 (AB) and its Exoplanet DoAr 21 (AB)b)
![](DoAr_21_(AB)b_STZ0.png)
(Zoomed position in Stellar Map of star DoAr 21 (AB) and its Exoplanet DoAr 21 (AB)b (zoom level 3))
![](DoAr_21_(AB)b_STZ3.png)
(Synthetic Spectrum of star DoAr 21 (AB)*)
![](DoAr_21_(AB)b_Spc.png)
*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