Imaginary Picture of HATS-4 b

Display orbital revolution of HATS-4 b around the hoststar HATS-4
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Exoplanet Name : HATS-4 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 1.0200 (Rjup) 11.4332 (Rearth)
Mass (Mjup / Me): 1.3230 (Mjup) 420.6320 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0362 (AU) 0.0362 (AU Est.)
Eccentricity : 0.0130
Orbital Period(Yrs) 0.0069
Orbital Period(Observed/Estimated) 2.52 (Days Obs.) 2.51 (Days Est.)
Surface Gravity (G Earth) 3.2179
Star Radiation at Atmospheric Boundary: 682356.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1282.8 (K)
Blackbody T 0.3(K) 1204.6 (K)
Blackbody T 0.7(K) 974.7 (K)
Tidally Locked Blackbody T 0.1(K) 1525.5 (K)
Tidally Locked Blackbody T 0.3(K) 1432.6 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Primary Transit
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : HATS-4
Alternate Name :
Star Distance(LY) : 1369.9
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 2.1 (GY)
Temperature : 5403 (K)
Spectral type : G7
UV portion[%]: 6.4
Visible portion[%]: 42.5
IR portion[%]: 51.1
Metalicity : 0.4
Absolute Magnitude: 5.4
Apparent Magnitude: 13.5
Right Ascension(RA) 94.1121
Declination (DEC) -21.4531
Hubble Space Telescope Guide Star Catalog (GSC) ID 06505-00217
Discovered by
Discovery Paper - Authors "A. Jord_n, R. Brahm, G._. Bakos, D. Bayliss, K. Penev, J.D. Hartman, G. Zhou, L. Mancini, M. Mohler-Fischer, S. Ciceri, B. Sato, Z. Csubry, M. Rabus, V. Suc, N. Espinoza, W. Bhatti, M. de Val-Borro, L. Buchhave, B. Cs_k, T. Henning, B. Schmidt, T.G. Tan, R.W. Noyes, B. B_ky, R.P. Butler, S. Shectman, J. Crane, I. Thompson, A. Williams, R. Martin, C. Contreras, J. L_z_r, I. Papp, P. S_ri"
Discovery Paper - Title HATS-4b: A Dense Hot-Jupiter Transiting a Super Metal-Rich G Star
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HATS-4+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HATS-4%20b/
HATS-4 b
HATS-4 b
  • HATS-4 b is an exoplanet orbiting the star HATS-4, located about 1369.9 light-years (420.0 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star HATS-4 has apparent magnitude of 13.5, with absolute magnitude of 5.4.
  • It is 1.0 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5403 with its spectral types of G7
  • In this planetary system, the extrasolar planet HATS-4 b orbits around the star HATS-4 every 2.5 days with its orbital distance of 0.04 AU ( 5415442.9 km)
    • (Projected orbit of HATS-4 b around its host star HATS-4)


  • The Star HATS-4 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.585 AU ( 87512437.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.809 AU ( 120965058.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.232 AU ( 184323979.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.813 AU ( 271240810.3 km)
  • Radiation at Planetary Boundary of HATS-4 b : 682355.99 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HATS-4)



  • Kopparapu Recent Venus for Star HATS-4 distance : 0.620 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HATS-4 distance : 0.785 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HATS-4 distance : 0.758 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HATS-4 distance : 0.831 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HATS-4 distance : 1.401 AU
  • Kopparapu Outer Boundary for Early Mars for Star HATS-4 distance : 1.478 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HATS-4)



  • Original Kopparapu Recent Venus for Star HATS-4 distance : 0.616 AU
  • Original Kopparapu Runaway Greenhouse for Star HATS-4 distance : 0.807 AU
  • Original Kopparapu Moist Greenhouse for Star HATS-4 distance : 0.816 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HATS-4 distance : 1.425 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HATS-4 distance : 1.482 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HATS-4)



    (Position in Stellar Map of star HATS-4 and its Exoplanet HATS-4 b)



    (Zoomed position in Stellar Map of star HATS-4 and its Exoplanet HATS-4 b (zoom level 3))

    (Synthetic Spectrum of star HATS-4*)
    *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