Imaginary Picture of HD 12648 b
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Exoplanet Name : HD 12648 b
Alternate Name :
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 2.9000 (Mjup) 922.0202 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.5400 (AU) 0.5400 (AU Est.)
Eccentricity : 0.0400
Orbital Period(Yrs) 0.3658
Orbital Period(Observed/Estimated) 133.60 (Days Obs.) 132.31 (Days Est.)
Star Radiation at Atmospheric Boundary: 194526.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 937.3 (K)
Blackbody T 0.3(K) 880.2 (K)
Blackbody T 0.7(K) 712.2 (K)
Tidally Locked Blackbody T 0.1(K) 1114.7 (K)
Tidally Locked Blackbody T 0.3(K) 1046.8 (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 : HD 12648
Alternate Name :
Star Distance(LY) : 606.2
Stellar Radius(Rsun) : 9.2 (Rsun Measured)
Stellar Mass(Msun) : 1.2 (Msun Measured) 1.2 (Msun Estimated)
Star Age : 4.5 (GY)
Temperature : 4835 (K)
Spectral type : G5
Metalicity : -0.6
Absolute Magnitude: 0.6
Apparent Magnitude: 7.0
Right Ascension(RA) 34.7486
Declination (DEC) 85.7361
Hubble Space Telescope Guide Star Catalog (GSC) ID 04620-00542
Discovered by
Discovery Paper - Authors "B.-C. Lee, M.-G. Park, S.-M. Lee, G. Jeong, H.-I. Oh, I. Han, J.W. Lee, C.-U. Lee, S.-L. Kim, K.-M. Kim"
Discovery Paper - Title "Search for exoplanet around northern circumpolar stars - Four planets around HD 11755, HD 12648, HD 24064, and 8 Ursae Minoris"
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+12648+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%2012648%20b/
HD 12648 b
HD 12648 b

  • HD 12648 b is an exoplanet orbiting the star HD 12648, located about 606.2 light-years (185.9 pc) away from Solar System. Its discovery was publicly announced on 2015.
  • The host star HD 12648 has apparent magnitude of 7.0, with absolute magnitude of 0.6.
  • It is 1.2 times more massive and 9.2 times bigger compared with our Sun. The surface temperature is 4835 with its spectral types of G5
  • In this planetary system, the extrasolar planet HD 12648 b orbits around the star HD 12648 every 133.6 days with its orbital distance of 0.54 AU ( 80782850.2 km)
  • (Projected orbit of HD 12648 b around its host star HD 12648)


  • The Star HD 12648 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 4.659 AU ( 697009819.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 6.440 AU ( 963449721.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 9.814 AU ( 1468084164.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 14.441 AU ( 2160350160.4 km)
  • Radiation at Planetary Boundary of HD 12648 b : 194526.54 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 12648)



  • Kopparapu Recent Venus for Star HD 12648 distance : 5.078 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 12648 distance : 6.430 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 12648 distance : 6.210 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 12648 distance : 6.817 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 12648 distance : 11.733 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 12648 distance : 12.376 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 12648)



  • Original Kopparapu Recent Venus for Star HD 12648 distance : 5.018 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 12648 distance : 6.630 AU
  • Original Kopparapu Moist Greenhouse for Star HD 12648 distance : 6.640 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 12648 distance : 11.928 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 12648 distance : 12.405 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 12648)



    (Position in Stellar Map of star HD 12648 and its Exoplanet HD 12648 b)



    (Zoomed position in Stellar Map of star HD 12648 and its Exoplanet HD 12648 b (zoom level 3))