Imaginary Picture of HD 149790 b

Display orbital revolution of HD 149790 b around the hoststar HD 149790
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Exoplanet Name : HD 149790 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 42.0000 (Mjup) 13353.3960 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0776 (AU Est.)
Eccentricity : 0.0050
Orbital Period(Yrs) 0.0183
Orbital Period(Observed/Estimated) 6.67 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 128.9582
Star Radiation at Atmospheric Boundary: 360227.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1093.4 (K)
Blackbody T 0.3(K) 1026.8 (K)
Blackbody T 0.7(K) 830.8 (K)
Tidally Locked Blackbody T 0.1(K) 1300.3 (K)
Tidally Locked Blackbody T 0.3(K) 1221.1 (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 149790
Alternate Name :
Star Distance(LY) : 471.7
Stellar Radius(Rsun) : 1.3 (Rsun Estimated)
Stellar Mass(Msun) : 1.4 (Msun Measured) 1.4 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5800 (K)
Spectral type : G2V
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : 0.0
Absolute Magnitude: 4.2
Apparent Magnitude: 10.0
Right Ascension(RA) 248.2583
Declination (DEC) -36.7908
Hubble Space Telescope Guide Star Catalog (GSC) ID 06808-01089
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+149790&submit=SIMBAD+search
Open Exoplanet Database Link
HD 149790 b
HD 149790 b

  • HD 149790 b is an exoplanet orbiting the star HD 149790, located about 471.7 light-years (144.6 pc) away from Solar System. Its discovery was publicly announced on 2022.
  • The host star HD 149790 has apparent magnitude of 10.0, with absolute magnitude of 4.2.
  • It is 1.4 times more massive and 1.3 times bigger compared with our Sun. The surface temperature is 5800 with its spectral types of G2V
  • In this planetary system, the extrasolar planet HD 149790 b orbits around the star HD 149790 every 6.7 days with its orbital distance of 0.08 AU ( 11608836.4 km)
  • (Projected orbit of HD 149790 b around its host star HD 149790)


  • The Star HD 149790 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.911 AU ( 136303533.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.259 AU ( 188407103.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.919 AU ( 287090731.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.824 AU ( 422466587.7 km)
  • Radiation at Planetary Boundary of HD 149790 b : 360227.00 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 149790)



  • Kopparapu Recent Venus for Star HD 149790 distance : 0.943 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 149790 distance : 1.194 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 149790 distance : 1.153 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 149790 distance : 1.265 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 149790 distance : 2.108 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 149790 distance : 2.223 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 149790)



  • Original Kopparapu Recent Venus for Star HD 149790 distance : 0.945 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 149790 distance : 1.227 AU
  • Original Kopparapu Moist Greenhouse for Star HD 149790 distance : 1.250 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 149790 distance : 2.145 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 149790 distance : 2.231 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 149790)



    (Position in Stellar Map of star HD 149790 and its Exoplanet HD 149790 b)



    (Zoomed position in Stellar Map of star HD 149790 and its Exoplanet HD 149790 b (zoom level 3))

    (Synthetic Spectrum of star HD 149790*)
    *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