Imaginary Picture of HATS-51 b
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Exoplanet Name : HATS-51 b
Alternate Name :
Radius (Rjup / Re): 1.4100 (Rjup) 15.8047 (Rearth)
Mass (Mjup / Me): 0.7680 (Mjup) 244.1764 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0464 (AU) 0.0464 (AU Est.)
Eccentricity : 0.3300
Orbital Period(Yrs) 0.0092
Orbital Period(Observed/Estimated) 3.35 (Days Obs.) 3.35 (Days Est.)
Star Radiation at Atmospheric Boundary: 1298876.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1506.7 (K)
Blackbody T 0.3(K) 1415.0 (K)
Blackbody T 0.7(K) 1144.9 (K)
Tidally Locked Blackbody T 0.1(K) 1791.8 (K)
Tidally Locked Blackbody T 0.3(K) 1682.7 (K)
Size Class: Super-Jupiter-size
Mass Class:
Detection Type : Primary Transit
Mass Detection : Radial Velocity
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : HATS-51
Alternate Name :
Star Distance(LY) : 1559.0
Stellar Radius(Rsun) : 1.4 (Rsun Measured)
Stellar Mass(Msun) : 1.2 (Msun Measured) 1.2 (Msun Estimated)
Star Age : 4.7 (GY)
Temperature : 5758 (K)
Spectral type : G3
Metalicity : 0.3
Absolute Magnitude: 4.1
Apparent Magnitude: 12.5
Right Ascension(RA) 102.8458
Declination (DEC) -29.0586
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK
Open Exoplanet Database Link
HATS-51 b
HATS-51 b

  • HATS-51 b is an exoplanet orbiting the star HATS-51, located about 1559.0 light-years (478.0 pc) away from Solar System. Its discovery was publicly announced on 2017.
  • The host star HATS-51 has apparent magnitude of 12.5, with absolute magnitude of 4.1.
  • It is 1.2 times more massive and 1.4 times bigger compared with our Sun. The surface temperature is 5758 with its spectral types of G3
  • In this planetary system, the extrasolar planet HATS-51 b orbits around the star HATS-51 every 3.3 days with its orbital distance of 0.05 AU ( 6939845.2 km)
  • (Projected orbit of HATS-51 b around its host star HATS-51)


  • The Star HATS-51 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.034 AU ( 154726223.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.430 AU ( 213872075.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.178 AU ( 325893713.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.206 AU ( 479566876.0 km)
  • Radiation at Planetary Boundary of HATS-51 b : 1298876.00 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HATS-51)



  • Kopparapu Recent Venus for Star HATS-51 distance : 1.073 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HATS-51 distance : 1.359 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HATS-51 distance : 1.313 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HATS-51 distance : 1.439 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HATS-51 distance : 2.401 AU
  • Kopparapu Outer Boundary for Early Mars for Star HATS-51 distance : 2.533 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HATS-51)



  • Original Kopparapu Recent Venus for Star HATS-51 distance : 1.074 AU
  • Original Kopparapu Runaway Greenhouse for Star HATS-51 distance : 1.397 AU
  • Original Kopparapu Moist Greenhouse for Star HATS-51 distance : 1.421 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HATS-51 distance : 2.444 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HATS-51 distance : 2.541 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HATS-51)



    (Position in Stellar Map of star HATS-51 and its Exoplanet HATS-51 b)



    (Zoomed position in Stellar Map of star HATS-51 and its Exoplanet HATS-51 b (zoom level 3))