|
Exoplanet Name : |
8 Umi b |
|
Alternate Name : |
|
|
Status : |
Confirmed |
|
Radius (Rjup / Re): |
0.9078 |
(Rjup) |
10.1759 |
(Rearth) |
|
Mass (Mjup / Me): |
1.6500 |
(Mjup) |
524.5977 |
(Mearth) |
|
Semi Major Axis / Orbital Distance Calculated |
0.4620 |
(AU) |
0.4620 |
(AU Est.) |
|
Eccentricity : |
0.0620 |
|
Orbital Period(Yrs) |
0.2555 |
|
Orbital Period(Observed/Estimated) |
93.31 |
(Days Obs.) |
85.49 |
(Days Est.) |
|
Surface Gravity (G Earth) |
5.0662 |
|
Star Radiation at Atmospheric Boundary: |
310801.7 |
(W/m2) |
|
Measured Temperature (K) |
0.0 |
(K) |
|
Blackbody T 0.1(K) |
1053.8 |
(K) |
|
Blackbody T 0.3(K) |
989.6 |
(K) |
|
Blackbody T 0.7(K) |
800.7 |
(K) |
|
Tidally Locked Blackbody T 0.1(K) |
1253.2 |
(K) |
|
Tidally Locked Blackbody T 0.3(K) |
1176.9 |
(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 : |
8 Umi |
|
Alternate Name : |
|
|
Star Distance(LY) : |
531.2 |
|
Stellar Radius(Rsun) : |
9.9 |
(Rsun Measured) |
|
Stellar Mass(Msun) : |
1.8 |
(Msun Measured) |
1.5 |
(Msun Estimated) |
|
Star Age : |
1.7 |
(GY) |
|
Temperature : |
4847 |
(K) |
|
Spectral type : |
K0 |
|
UV portion[%]: |
2.6 |
|
Visible portion[%]: |
35.7 |
|
IR portion[%]: |
61.7 |
|
Metalicity : |
-0.0 |
|
Absolute Magnitude: |
0.8 |
|
Apparent Magnitude: |
6.8 |
|
Right Ascension(RA) |
224.2000 |
|
Declination (DEC) |
74.9008 |
|
Hubble Space Telescope Guide Star Catalog (GSC) ID |
04417-00267 |
|
Discovered by |
|
|
Discovery Paper - Authors |
0 |
|
Discovery Paper - Title |
0 |
|
Discovery Paper - Journal |
0 |
|
Discovery Paper - URL |
0 |
|
SIMBAD LINK |
http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=8+Umi+&submit=SIMBAD+search |
|
Open Exoplanet Database Link |
0 |
 |
 |
 |
 |
/
8 Umi b
8 Umi b
8 Umi b is an exoplanet orbiting the star 8 Umi, located about 531.2 light-years (162.9 pc) away from Solar System. Its discovery was publicly announced on 2015.
The host star 8 Umi has apparent magnitude of 6.8, with absolute magnitude of 0.8. It is 1.8 times more massive and 9.9 times bigger compared with our Sun. The surface temperature is 4847 with its spectral types of K0
In this planetary system, the extrasolar planet 8 Umi b orbits around the star 8 Umi every 93.3 days with its orbital distance of 0.46 AU ( 69114216.3 km)
(Projected orbit of 8 Umi b around its host star 8 Umi)
The Star 8 Umi 's habitable zone is located at the following distance
Inner Boundary (the orbital distance at Venus's Equivalent Radiation )
: 5.039 AU ( 753770864.2 km)
Earth Boundary (the orbital distance at Earth's Equivalent Radiation)
: 6.965 AU ( 1041908318.3 km)
Outer Boundary (the orbital distance at Mars's Equivalent Radiation)
: 10.613 AU ( 1587637703.2 km)
Snow Line (the orbital distance at Snow Line Equivalent Radiation)
: 15.617 AU ( 2336278430.2 km)
Radiation at Planetary Boundary of 8 Umi b : 310801.66 W/m2
(Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star 8 Umi)
Kopparapu Recent Venus for Star 8 Umi distance : 5.489 AU
Kopparapu Runaway Greenhouse for Earth-sized planet for Star 8 Umi distance : 6.950 AU
Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star 8 Umi distance : 6.712 AU
Kopparapu Runaway Greenhouse for Mars-sized planet for Star 8 Umi distance : 7.368 AU
Kopparapu Outer Boundary for Maximum Greenhouse for Star 8 Umi distance : 12.675 AU
Kopparapu Outer Boundary for Early Mars for Star 8 Umi distance : 13.370 AU
(Habitable zone calculated based on Kopparapu et al.(2013) around the star 8 Umi)
Original Kopparapu Recent Venus for Star 8 Umi distance : 5.424 AU
Original Kopparapu Runaway Greenhouse for Star 8 Umi distance : 7.166 AU
Original Kopparapu Moist Greenhouse for Star 8 Umi distance : 7.177 AU
Original Kopparapu Outer Boundary for Maximum Greenhouse for Star 8 Umi distance : 12.886 AU
Original Kopparapu Outer Boundary for Early Mars for Star 8 Umi distance : 13.401 AU
(Habitable zone calculated based on Kopparapu et al.(Original) around the star 8 Umi)
(Position in Stellar Map of star 8 Umi and its Exoplanet 8 Umi b)
(Zoomed position in Stellar Map of star 8 Umi and its Exoplanet 8 Umi b (zoom level 3))
(Synthetic Spectrum of star 8 Umi*)
*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
