Imaginary Picture of HATS-27 b

Display orbital revolution of HATS-27 b around the hoststar HATS-27
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Exoplanet Name : HATS-27 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 1.5000 (Rjup) 16.8135 (Rearth)
Mass (Mjup / Me): 0.5300 (Mjup) 168.5071 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0611 (AU) 0.0611 (AU Est.)
Eccentricity : 0.2900
Orbital Period(Yrs) 0.0127
Orbital Period(Observed/Estimated) 4.64 (Days Obs.) 4.64 (Days Est.)
Surface Gravity (G Earth) 0.5961
Star Radiation at Atmospheric Boundary: 1708538.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1613.6 (K)
Blackbody T 0.3(K) 1515.3 (K)
Blackbody T 0.7(K) 1226.1 (K)
Tidally Locked Blackbody T 0.1(K) 1918.9 (K)
Tidally Locked Blackbody T 0.3(K) 1802.1 (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-27
Alternate Name : "2MASS 12541261-4635157, GSC 8245-02236"
Star Distance(LY) : 2739.7
Stellar Radius(Rsun) : 1.7 (Rsun Measured)
Stellar Mass(Msun) : 1.4 (Msun Measured) 1.4 (Msun Estimated)
Star Age : 2.3 (GY)
Temperature : 6438 (K)
Spectral type : F
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : 0.1
Absolute Magnitude: 3.2
Apparent Magnitude: 12.8
Right Ascension(RA) 193.5526
Declination (DEC) -46.5877
Hubble Space Telescope Guide Star Catalog (GSC) ID 08245-02236
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-27&submit=SIMBAD+search
Open Exoplanet Database Link
HATS-27 b
HATS-27 b

  • HATS-27 b is an exoplanet orbiting the star HATS-27, located about 2739.7 light-years (840.0 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star HATS-27 has apparent magnitude of 12.8, with absolute magnitude of 3.2.
  • It is 1.4 times more massive and 1.7 times bigger compared with our Sun. The surface temperature is 6438 with its spectral types of F
  • In this planetary system, the extrasolar planet HATS-27 b orbits around the star HATS-27 every 4.6 days with its orbital distance of 0.06 AU ( 9140429.9 km)
  • (Projected orbit of HATS-27 b around its host star HATS-27)


  • The Star HATS-27 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.562 AU ( 233727226.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 2.160 AU ( 323072107.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 3.291 AU ( 492290395.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 4.842 AU ( 724426883.0 km)
  • Radiation at Planetary Boundary of HATS-27 b : 1708538.53 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HATS-27)



  • Kopparapu Recent Venus for Star HATS-27 distance : 1.556 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HATS-27 distance : 1.971 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HATS-27 distance : 1.903 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HATS-27 distance : 2.085 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HATS-27 distance : 3.431 AU
  • Kopparapu Outer Boundary for Early Mars for Star HATS-27 distance : 3.619 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HATS-27)



  • Original Kopparapu Recent Venus for Star HATS-27 distance : 1.580 AU
  • Original Kopparapu Runaway Greenhouse for Star HATS-27 distance : 2.021 AU
  • Original Kopparapu Moist Greenhouse for Star HATS-27 distance : 2.091 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HATS-27 distance : 3.494 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HATS-27 distance : 3.633 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HATS-27)



    (Position in Stellar Map of star HATS-27 and its Exoplanet HATS-27 b)



    (Zoomed position in Stellar Map of star HATS-27 and its Exoplanet HATS-27 b (zoom level 3))

    (Synthetic Spectrum of star HATS-27*)
    *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