Imaginary Picture of HATS-12 b

Display orbital revolution of HATS-12 b around the hoststar HATS-12
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Exoplanet Name : HATS-12 b
Alternate Name : "2MASS J19164857-1921212 b, EPIC 218131080 b, EPIC 218131080.01, GSC 6304-00396 b, K2-144 b, WISE J191648.57-192121.5 b"
Status : Confirmed
Radius (Rjup / Re): 0.6920 (Rjup) 7.7566 (Rearth)
Mass (Mjup / Me): 2.3800 (Mjup) 756.6924 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0441 (AU) 0.0441 (AU Est.)
Eccentricity : 0.0850
Orbital Period(Yrs) 0.0086
Orbital Period(Observed/Estimated) 3.14 (Days Obs.) 3.14 (Days Est.)
Surface Gravity (G Earth) 12.5769
Star Radiation at Atmospheric Boundary: 1409640.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1537.9 (K)
Blackbody T 0.3(K) 1444.2 (K)
Blackbody T 0.7(K) 1168.5 (K)
Tidally Locked Blackbody T 0.1(K) 1828.8 (K)
Tidally Locked Blackbody T 0.3(K) 1717.5 (K)
Size Class: sub-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-12
Alternate Name : "2MASS J19164857-1921212, EPIC 218131080, GSC 6304-00396, K2-144, WISE J191648.57-192121.5"
Star Distance(LY) : 1671.3
Stellar Radius(Rsun) : 1.2 (Rsun Measured)
Stellar Mass(Msun) : 1.2 (Msun Measured) 1.2 (Msun Estimated)
Star Age : 2.4 (GY)
Temperature : 6357 (K)
Spectral type : F
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : -0.1
Absolute Magnitude: 4.2
Apparent Magnitude: 12.8
Right Ascension(RA) 289.2024
Declination (DEC) -19.3559
Hubble Space Telescope Guide Star Catalog (GSC) ID 06304-00396
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=HATS-12++&submit=SIMBAD+search
Open Exoplanet Database Link 0
HATS-12 b
HATS-12 b

  • HATS-12 b is an exoplanet orbiting the star HATS-12, located about 1671.3 light-years (512.4 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star HATS-12 has apparent magnitude of 12.8, with absolute magnitude of 4.2.
  • It is 1.2 times more massive and 1.2 times bigger compared with our Sun. The surface temperature is 6357 with its spectral types of F
  • In this planetary system, the extrasolar planet HATS-12 b orbits around the star HATS-12 every 3.1 days with its orbital distance of 0.04 AU ( 6597266.1 km)
  • (Projected orbit of HATS-12 b around its host star HATS-12)


  • The Star HATS-12 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.024 AU ( 153231621.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.416 AU ( 211806145.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.157 AU ( 322745692.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.175 AU ( 474934424.9 km)
  • Radiation at Planetary Boundary of HATS-12 b : 1409639.95 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HATS-12)



  • Kopparapu Recent Venus for Star HATS-12 distance : 1.025 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HATS-12 distance : 1.298 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HATS-12 distance : 1.254 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HATS-12 distance : 1.374 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HATS-12 distance : 2.263 AU
  • Kopparapu Outer Boundary for Early Mars for Star HATS-12 distance : 2.387 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HATS-12)



  • Original Kopparapu Recent Venus for Star HATS-12 distance : 1.039 AU
  • Original Kopparapu Runaway Greenhouse for Star HATS-12 distance : 1.331 AU
  • Original Kopparapu Moist Greenhouse for Star HATS-12 distance : 1.375 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HATS-12 distance : 2.304 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HATS-12 distance : 2.396 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HATS-12)



    (Position in Stellar Map of star HATS-12 and its Exoplanet HATS-12 b)



    (Zoomed position in Stellar Map of star HATS-12 and its Exoplanet HATS-12 b (zoom level 3))

    (Synthetic Spectrum of star HATS-12*)
    *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