Imaginary Picture of HD 73583 b

Display orbital revolution of HD 73583 b around the hoststar HD 73583
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Exoplanet Name : HD 73583 b
Alternate Name : TOI-560 b
Status : Confirmed
Radius (Rjup / Re): 0.2525 (Rjup) 2.8303 (Rearth)
Mass (Mjup / Me): 0.0310 (Mjup) 9.8561 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0601 (AU) 0.0601 (AU Est.)
Eccentricity : 0.1050
Orbital Period(Yrs) 0.0175
Orbital Period(Observed/Estimated) 6.40 (Days Obs.) 6.62 (Days Est.)
Surface Gravity (G Earth) 1.2304
Star Radiation at Atmospheric Boundary: 70870.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 728.2 (K)
Blackbody T 0.3(K) 683.9 (K)
Blackbody T 0.7(K) 553.3 (K)
Tidally Locked Blackbody T 0.1(K) 866.0 (K)
Tidally Locked Blackbody T 0.3(K) 813.3 (K)
Size Class: sub-Neptune-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 : HD 73583
Alternate Name : TOI-560
Star Distance(LY) : 103.1
Stellar Radius(Rsun) : 0.7 (Rsun Measured)
Stellar Mass(Msun) : 0.7 (Msun Measured) 0.7 (Msun Estimated)
Star Age : 0.8 (GY)
Temperature : 4511 (K)
Spectral type : K4V
UV portion[%]: 1.6
Visible portion[%]: 31.3
IR portion[%]: 67.1
Metalicity : 0.0
Absolute Magnitude: 7.2
Apparent Magnitude: 9.7
Right Ascension(RA) 129.6875
Declination (DEC) -13.2567
Hubble Space Telescope Guide Star Catalog (GSC) ID 05441-00431
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK https://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+73583&submit=SIMBAD+search
Open Exoplanet Database Link
HD 73583 b
HD 73583 b

  • HD 73583 b is an exoplanet orbiting the star HD 73583, located about 103.1 light-years (31.6 pc) away from Solar System. Its discovery was publicly announced on 2021.
  • The host star HD 73583 has apparent magnitude of 9.7, with absolute magnitude of 7.2.
  • It is 0.7 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 4511 with its spectral types of K4V
  • In this planetary system, the extrasolar planet HD 73583 b orbits around the star HD 73583 every 6.4 days with its orbital distance of 0.06 AU ( 8990832.0 km)
  • (Projected orbit of HD 73583 b around its host star HD 73583)


  • The Star HD 73583 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.313 AU ( 46823310.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.433 AU ( 64722051.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.659 AU ( 98622083.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.970 AU ( 145126716.1 km)
  • Radiation at Planetary Boundary of HD 73583 b : 70870.23 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 73583)



  • Kopparapu Recent Venus for Star HD 73583 distance : 0.346 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 73583 distance : 0.437 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 73583 distance : 0.423 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 73583 distance : 0.464 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 73583 distance : 0.810 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 73583 distance : 0.854 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 73583)



  • Original Kopparapu Recent Venus for Star HD 73583 distance : 0.341 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 73583 distance : 0.452 AU
  • Original Kopparapu Moist Greenhouse for Star HD 73583 distance : 0.451 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 73583 distance : 0.823 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 73583 distance : 0.856 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 73583)



    (Position in Stellar Map of star HD 73583 and its Exoplanet HD 73583 b)



    (Zoomed position in Stellar Map of star HD 73583 and its Exoplanet HD 73583 b (zoom level 3))

    (Synthetic Spectrum of star HD 73583*)
    *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