Imaginary Picture of omi UMa b
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Exoplanet Name : omi UMa b
Alternate Name :
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 4.1000 (Mjup) 1303.5458 (Mearth)
Semi Major Axis / Orbital Distance Calculated 3.9000 (AU) 3.9000 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 4.4626
Orbital Period(Observed/Estimated) 1630.00 (Days Obs.) 1600.32 (Days Est.)
Star Radiation at Atmospheric Boundary: 12103.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 468.1 (K)
Blackbody T 0.3(K) 439.6 (K)
Blackbody T 0.7(K) 355.7 (K)
Tidally Locked Blackbody T 0.1(K) 556.7 (K)
Tidally Locked Blackbody T 0.3(K) 522.8 (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 : omi UMa
Alternate Name :
Star Distance(LY) : 183.6
Stellar Radius(Rsun) : 14.1 (Rsun Measured)
Stellar Mass(Msun) : 3.1 (Msun Measured) 3.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5242 (K)
Spectral type : G4II-III
Metalicity : -0.1
Absolute Magnitude: -0.4
Apparent Magnitude: 3.4
Right Ascension(RA) 127.5661
Declination (DEC) 60.7181
Hubble Space Telescope Guide Star Catalog (GSC) ID 04127-02431
Discovered by
Discovery Paper - Authors "Bun'ei Sato, Masashi Omiya, Hiroki Harakawa, Hideyuki Izumiura, Eiji Kambe, Yoichi Takeda, Michitoshi Yoshida, Yoichi Itoh, Hiroyasu Ando, Eiichiro Kokubo, Shigeru Ida"
Discovery Paper - Title Substellar Companions to Seven Evolved Intermediate-Mass Stars
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=omi+UMa+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/omi%20UMa%20b/
omi UMa b
omi UMa b

  • omi UMa b is an exoplanet orbiting the star omi UMa, located about 183.6 light-years (56.3 pc) away from Solar System. Its discovery was publicly announced on 2012.
  • The host star omi UMa has apparent magnitude of 3.4, with absolute magnitude of -0.4.
  • It is 3.1 times more massive and 14.1 times bigger compared with our Sun. The surface temperature is 5242 with its spectral types of G4II-III
  • In this planetary system, the extrasolar planet omi UMa b orbits around the star omi UMa every 1630.0 days with its orbital distance of 3.90 AU ( 583431695.7 km)
  • (Projected orbit of omi UMa b around its host star omi UMa)


  • The Star omi UMa 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 8.394 AU ( 1255657683.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 11.602 AU ( 1735647060.6 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 17.679 AU ( 2644742022.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 26.015 AU ( 3891853744.8 km)
  • Radiation at Planetary Boundary of omi UMa b : 12103.25 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star omi UMa)



  • Kopparapu Recent Venus for Star omi UMa distance : 8.970 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star omi UMa distance : 11.357 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star omi UMa distance : 10.970 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star omi UMa distance : 12.034 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star omi UMa distance : 20.396 AU
  • Kopparapu Outer Boundary for Early Mars for Star omi UMa distance : 21.514 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star omi UMa)



  • Original Kopparapu Recent Venus for Star omi UMa distance : 8.900 AU
  • Original Kopparapu Runaway Greenhouse for Star omi UMa distance : 11.694 AU
  • Original Kopparapu Moist Greenhouse for Star omi UMa distance : 11.777 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star omi UMa distance : 20.744 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star omi UMa distance : 21.573 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star omi UMa)



    (Position in Stellar Map of star omi UMa and its Exoplanet omi UMa b)



    (Zoomed position in Stellar Map of star omi UMa and its Exoplanet omi UMa b (zoom level 3))