Imaginary Picture of HATS-54 b

Display orbital revolution of HATS-54 b around the hoststar HATS-54
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Exoplanet Name : HATS-54 b
Alternate Name : NGTS-22 b
Status : Confirmed
Radius (Rjup / Re): 1.0150 (Rjup) 11.3771 (Rearth)
Mass (Mjup / Me): 0.7530 (Mjup) 239.4073 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0370 (AU) 0.0370 (AU Est.)
Eccentricity : 0.1260
Orbital Period(Yrs) 0.0070
Orbital Period(Observed/Estimated) 2.54 (Days Obs.) 2.54 (Days Est.)
Surface Gravity (G Earth) 1.8496
Star Radiation at Atmospheric Boundary: 1352900.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1522.2 (K)
Blackbody T 0.3(K) 1429.5 (K)
Blackbody T 0.7(K) 1156.6 (K)
Tidally Locked Blackbody T 0.1(K) 1810.2 (K)
Tidally Locked Blackbody T 0.3(K) 1699.9 (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-54
Alternate Name : NGTS-22
Star Distance(LY) : 2348.3
Stellar Radius(Rsun) : 1.2 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 8.0 (GY)
Temperature : 5621 (K)
Spectral type : G8V
UV portion[%]: 7.3
Visible portion[%]: 44.0
IR portion[%]: 48.6
Metalicity : 0.4
Absolute Magnitude: 4.6
Apparent Magnitude: 13.9
Right Ascension(RA) 200.6333
Declination (DEC) -44.6889
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-54 b
HATS-54 b

  • HATS-54 b is an exoplanet orbiting the star HATS-54, located about 2348.3 light-years (720.0 pc) away from Solar System. Its discovery was publicly announced on 2018.
  • The host star HATS-54 has apparent magnitude of 13.9, with absolute magnitude of 4.6.
  • It is 1.1 times more massive and 1.2 times bigger compared with our Sun. The surface temperature is 5621 with its spectral types of G8V
  • In this planetary system, the extrasolar planet HATS-54 b orbits around the star HATS-54 every 2.5 days with its orbital distance of 0.04 AU ( 5535121.2 km)
  • (Projected orbit of HATS-54 b around its host star HATS-54)


  • The Star HATS-54 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.842 AU ( 125947744.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.164 AU ( 174092697.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.773 AU ( 265278743.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.609 AU ( 390369292.3 km)
  • Radiation at Planetary Boundary of HATS-54 b : 1352900.72 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HATS-54)



  • Kopparapu Recent Venus for Star HATS-54 distance : 0.881 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HATS-54 distance : 1.115 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HATS-54 distance : 1.077 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HATS-54 distance : 1.181 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HATS-54 distance : 1.978 AU
  • Kopparapu Outer Boundary for Early Mars for Star HATS-54 distance : 2.087 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HATS-54)



  • Original Kopparapu Recent Venus for Star HATS-54 distance : 0.879 AU
  • Original Kopparapu Runaway Greenhouse for Star HATS-54 distance : 1.147 AU
  • Original Kopparapu Moist Greenhouse for Star HATS-54 distance : 1.163 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HATS-54 distance : 2.013 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HATS-54 distance : 2.093 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HATS-54)



    (Position in Stellar Map of star HATS-54 and its Exoplanet HATS-54 b)



    (Zoomed position in Stellar Map of star HATS-54 and its Exoplanet HATS-54 b (zoom level 3))

    (Synthetic Spectrum of star HATS-54*)
    *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