Imaginary Picture of HIP 78530 b

Display orbital revolution of HIP 78530 b around the hoststar HIP 78530
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Exoplanet Name : HIP 78530 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 1.8300 (Rjup) 20.5125 (Rearth)
Mass (Mjup / Me): 28.0000 (Mjup) 8902.2640 (Mearth)
Semi Major Axis / Orbital Distance Calculated 710.0000 (AU) 710.0000 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0000
Orbital Period(Observed/Estimated) 0.00 (Days Obs.) 4370264.71 (Days Est.)
Surface Gravity (G Earth) 21.1575
Star Radiation at Atmospheric Boundary: 0.1 (W/m2)
Measured Temperature (K) 2679.0 (K)
Blackbody T 0.1(K) 24.4 (K)
Blackbody T 0.3(K) 22.9 (K)
Blackbody T 0.7(K) 18.5 (K)
Tidally Locked Blackbody T 0.1(K) 29.0 (K)
Tidally Locked Blackbody T 0.3(K) 27.2 (K)
Size Class: Super-Jupiter-size
Mass Class:
Detection Type : Imaging
Mass Detection : Spectrum
Radius Detection : Flux
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : HIP 78530
Alternate Name :
Star Distance(LY) : 511.2
Stellar Radius(Rsun) : 1.7 (Rsun Estimated)
Stellar Mass(Msun) : 2.5 (Msun Measured) 0.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 10500 (K)
Spectral type : B9V
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : 0.0
Absolute Magnitude: 1.2
Apparent Magnitude: 7.2
Right Ascension(RA) 240.4811
Declination (DEC) -21.9803
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "Lafreni_re,avid; Jayawardhana,ay; Janson,arkus; Helling,hristiane; Witte,oeren; Hauschildt,eter"
Discovery Paper - Title Discovery of an ~23 M Jup Brown Dwarf Orbiting ~700 AU from the Massive Star HIP 78530 in Upper Scorpius
Discovery Paper - Journal "The Astrophysical Journal, Volume 730, Number 1"
Discovery Paper - URL http://iopscience.iop.org/article/10.1088/0004-637X/730/1/42/meta
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HIP+78530+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HIP%2078530%20b/
HIP 78530 b
HIP 78530 b

  • HIP 78530 b is an exoplanet orbiting the star HIP 78530, located about 511.2 light-years (156.7 pc) away from Solar System. Its discovery was publicly announced on 2011.
  • The host star HIP 78530 has apparent magnitude of 7.2, with absolute magnitude of 1.2.
  • It is 2.5 times more massive and 1.7 times bigger compared with our Sun. The surface temperature is 10500 with its spectral types of B9V
  • (Projected orbit of HIP 78530 b around its host star HIP 78530)


  • The Star HIP 78530 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 4.140 AU ( 619367554.8 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 5.723 AU ( 856127820.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 8.720 AU ( 1304549338.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 12.832 AU ( 1919701499.9 km)
  • Radiation at Planetary Boundary of HIP 78530 b : 0.09 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HIP 78530)



  • Kopparapu Recent Venus for Star HIP 78530 distance : 8.869 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HIP 78530 distance : 11.270 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HIP 78530 distance : 11.010 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HIP 78530 distance : 11.588 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HIP 78530 distance : 21.385 AU
  • Kopparapu Outer Boundary for Early Mars for Star HIP 78530 distance : 22.351 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HIP 78530)



  • Original Kopparapu Recent Venus for Star HIP 78530 distance : 5.352 AU
  • Original Kopparapu Runaway Greenhouse for Star HIP 78530 distance : 10.923 AU
  • Original Kopparapu Moist Greenhouse for Star HIP 78530 distance : 7.082 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HIP 78530 distance : 20.240 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HIP 78530 distance : 21.051 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HIP 78530)



    (Position in Stellar Map of star HIP 78530 and its Exoplanet HIP 78530 b)



    (Zoomed position in Stellar Map of star HIP 78530 and its Exoplanet HIP 78530 b (zoom level 3))

    (Synthetic Spectrum of star HIP 78530*)
    *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