Imaginary Picture of HATS-28 b
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Exoplanet Name : HATS-28 b
Alternate Name :
Radius (Rjup / Re): 1.1940 (Rjup) 13.3835 (Rearth)
Mass (Mjup / Me): 0.6720 (Mjup) 213.6543 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0413 (AU) 0.0413 (AU Est.)
Eccentricity : 0.1010
Orbital Period(Yrs) 0.0087
Orbital Period(Observed/Estimated) 3.18 (Days Obs.) 3.18 (Days Est.)
Star Radiation at Atmospheric Boundary: 558181.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1219.9 (K)
Blackbody T 0.3(K) 1145.6 (K)
Blackbody T 0.7(K) 926.9 (K)
Tidally Locked Blackbody T 0.1(K) 1450.8 (K)
Tidally Locked Blackbody T 0.3(K) 1362.4 (K)
Size Class: 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-28
Alternate Name : "2MASS 18573592-4908184, GSC 8382-00661"
Star Distance(LY) : 1699.3
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 6.2 (GY)
Temperature : 5498 (K)
Spectral type : G
Metalicity : 0.0
Absolute Magnitude: 13.4
Apparent Magnitude: 22.0
Right Ascension(RA) 284.3997
Declination (DEC) -49.1385
Hubble Space Telescope Guide Star Catalog (GSC) ID 08382-00661
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=HATS-28+&submit=SIMBAD+search
Open Exoplanet Database Link
HATS-28 b
HATS-28 b

  • HATS-28 b is an exoplanet orbiting the star HATS-28, located about 1699.3 light-years (521.0 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star HATS-28 has apparent magnitude of 22.0, with absolute magnitude of 13.4.
  • It is 0.9 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5498 with its spectral types of G
  • In this planetary system, the extrasolar planet HATS-28 b orbits around the star HATS-28 every 3.2 days with its orbital distance of 0.04 AU ( 6179888.0 km)
  • (Projected orbit of HATS-28 b around its host star HATS-28)


  • The Star HATS-28 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.604 AU ( 90323031.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.835 AU ( 124850033.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.272 AU ( 190243821.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.871 AU ( 279952117.9 km)
  • Radiation at Planetary Boundary of HATS-28 b : 558181.20 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HATS-28)



  • Kopparapu Recent Venus for Star HATS-28 distance : 0.636 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HATS-28 distance : 0.806 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HATS-28 distance : 0.778 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HATS-28 distance : 0.853 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HATS-28 distance : 1.434 AU
  • Kopparapu Outer Boundary for Early Mars for Star HATS-28 distance : 1.513 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HATS-28)



  • Original Kopparapu Recent Venus for Star HATS-28 distance : 0.634 AU
  • Original Kopparapu Runaway Greenhouse for Star HATS-28 distance : 0.829 AU
  • Original Kopparapu Moist Greenhouse for Star HATS-28 distance : 0.839 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HATS-28 distance : 1.459 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HATS-28 distance : 1.517 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HATS-28)



    (Position in Stellar Map of star HATS-28 and its Exoplanet HATS-28 b)



    (Zoomed position in Stellar Map of star HATS-28 and its Exoplanet HATS-28 b (zoom level 3))