Imaginary Picture of HIP 73990 c

Display orbital revolution of HIP 73990 c around the hoststar HIP 73990
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Exoplanet Name : HIP 73990 c
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 22.0000 (Mjup) 6994.6360 (Mearth)
Semi Major Axis / Orbital Distance Calculated 32.0000 (AU) 32.0000 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0000
Orbital Period(Observed/Estimated) 0.00 (Days Obs.) 50413.98 (Days Est.)
Surface Gravity (G Earth) 67.5495
Star Radiation at Atmospheric Boundary: 7.4 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 73.6 (K)
Blackbody T 0.3(K) 69.1 (K)
Blackbody T 0.7(K) 55.9 (K)
Tidally Locked Blackbody T 0.1(K) 87.5 (K)
Tidally Locked Blackbody T 0.3(K) 82.2 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Imaging
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : HIP 73990
Alternate Name : HD 133803
Star Distance(LY) : 361.1
Stellar Radius(Rsun) : 1.4 (Rsun Estimated)
Stellar Mass(Msun) : 1.7 (Msun Measured) 0.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 7450 (K)
Spectral type : A9V
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : 0.0
Absolute Magnitude: 2.9
Apparent Magnitude: 8.1
Right Ascension(RA) 226.8122
Declination (DEC) -29.5044
Hubble Space Telescope Guide Star Catalog (GSC) ID 06773-00783
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title 0
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HIP+73990+&submit=SIMBAD+search
Open Exoplanet Database Link 0
HIP 73990 c
HIP 73990 c

  • HIP 73990 c is an exoplanet orbiting the star HIP 73990, located about 361.1 light-years (110.7 pc) away from Solar System. Its discovery was publicly announced on 2015.
  • The host star HIP 73990 has apparent magnitude of 8.1, with absolute magnitude of 2.9.
  • It is 1.7 times more massive and 1.4 times bigger compared with our Sun. The surface temperature is 7450 with its spectral types of A9V
  • (Projected orbit of HIP 73990 c around its host star HIP 73990)


  • The Star HIP 73990 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.701 AU ( 254479369.0 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 2.351 AU ( 351756991.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 3.583 AU ( 535999811.1 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 5.272 AU ( 788747202.7 km)
  • Radiation at Planetary Boundary of HIP 73990 c : 7.38 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HIP 73990)



  • Kopparapu Recent Venus for Star HIP 73990 distance : 1.615 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HIP 73990 distance : 2.045 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HIP 73990 distance : 1.975 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HIP 73990 distance : 2.162 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HIP 73990 distance : 3.528 AU
  • Kopparapu Outer Boundary for Early Mars for Star HIP 73990 distance : 3.720 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HIP 73990)



  • Original Kopparapu Recent Venus for Star HIP 73990 distance : 1.672 AU
  • Original Kopparapu Runaway Greenhouse for Star HIP 73990 distance : 2.091 AU
  • Original Kopparapu Moist Greenhouse for Star HIP 73990 distance : 2.213 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HIP 73990 distance : 3.592 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HIP 73990 distance : 3.735 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HIP 73990)



    (Position in Stellar Map of star HIP 73990 and its Exoplanet HIP 73990 c)



    (Zoomed position in Stellar Map of star HIP 73990 and its Exoplanet HIP 73990 c (zoom level 3))

    (Synthetic Spectrum of star HIP 73990*)
    *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