Imaginary Picture of HD 190228 b

Display orbital revolution of HD 190228 b around the hoststar HD 190228
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Exoplanet Name : HD 190228 b
Alternate Name :
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 65.7000 (Mjup) 20888.5266 (Mearth)
Semi Major Axis / Orbital Distance Calculated 2.0000 (AU) 2.0000 (AU Est.)
Eccentricity : 0.5000
Orbital Period(Yrs) 3.1375
Orbital Period(Observed/Estimated) 1146.00 (Days Obs.) 906.07 (Days Est.)
Star Radiation at Atmospheric Boundary: 2006.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 298.7 (K)
Blackbody T 0.3(K) 280.5 (K)
Blackbody T 0.7(K) 227.0 (K)
Tidally Locked Blackbody T 0.1(K) 355.3 (K)
Tidally Locked Blackbody T 0.3(K) 333.6 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Habitable
Habitability by Kopparapu: Not habitable
Star Name : HD 190228
Alternate Name :
Star Distance(LY) : 215.6
Stellar Radius(Rsun) : 3.0 (Rsun Measured)
Stellar Mass(Msun) : 1.3 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 10.2 (GY)
Temperature : 5176 (K)
Spectral type : G5IV
Metalicity : -0.2
Absolute Magnitude: 3.2
Apparent Magnitude: 7.3
Right Ascension(RA) 300.7500
Declination (DEC) 28.3067
Hubble Space Telescope Guide Star Catalog (GSC) ID 02153-01463
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+190228+&submit=SIMBAD+search
Open Exoplanet Database Link
HD 190228 b
HD 190228 b

  • HD 190228 b is an exoplanet orbiting the star HD 190228, located about 215.6 light-years (66.1 pc) away from Solar System. Its discovery was publicly announced on 2002.
  • The host star HD 190228 has apparent magnitude of 7.3, with absolute magnitude of 3.2.
  • It is 1.3 times more massive and 3.0 times bigger compared with our Sun. The surface temperature is 5176 with its spectral types of G5IV
  • In this planetary system, the extrasolar planet HD 190228 b orbits around the star HD 190228 every 1146.0 days with its orbital distance of 2.00 AU ( 299195741.4 km)
  • (Projected orbit of HD 190228 b around its host star HD 190228)


  • The Star HD 190228 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.753 AU ( 262212620.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 2.423 AU ( 362446365.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 3.692 AU ( 552288052.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 5.433 AU ( 812716063.2 km)
  • Radiation at Planetary Boundary of HD 190228 b : 2006.95 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 190228)



  • Kopparapu Recent Venus for Star HD 190228 distance : 1.880 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 190228 distance : 2.380 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 190228 distance : 2.299 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 190228 distance : 2.522 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 190228 distance : 4.284 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 190228 distance : 4.519 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 190228)



  • Original Kopparapu Recent Venus for Star HD 190228 distance : 1.863 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 190228 distance : 2.451 AU
  • Original Kopparapu Moist Greenhouse for Star HD 190228 distance : 2.466 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 190228 distance : 4.357 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 190228 distance : 4.531 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 190228)



    (Position in Stellar Map of star HD 190228 and its Exoplanet HD 190228 b)



    (Zoomed position in Stellar Map of star HD 190228 and its Exoplanet HD 190228 b (zoom level 3))