Imaginary Picture of TOI-737 b

Display orbital revolution of TOI-737 b around the hoststar TOI-737
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Exoplanet Name : TOI-737 b
Alternate Name : HATS-74A b
Status : Confirmed
Radius (Rjup / Re): 1.0320 (Rjup) 11.5677 (Rearth)
Mass (Mjup / Me): 1.4600 (Mjup) 464.1895 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0238 (AU) 0.0238 (AU Est.)
Eccentricity : 0.0440
Orbital Period(Yrs) 0.0047
Orbital Period(Observed/Estimated) 1.73 (Days Obs.) 1.74 (Days Est.)
Surface Gravity (G Earth) 3.4690
Star Radiation at Atmospheric Boundary: 145587.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 871.8 (K)
Blackbody T 0.3(K) 818.7 (K)
Blackbody T 0.7(K) 662.4 (K)
Tidally Locked Blackbody T 0.1(K) 1036.8 (K)
Tidally Locked Blackbody T 0.3(K) 973.6 (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 : TOI-737
Alternate Name : HATS-74A
Star Distance(LY) : 934.8
Stellar Radius(Rsun) : 0.6 (Rsun Measured)
Stellar Mass(Msun) : 0.6 (Msun Measured) 0.6 (Msun Estimated)
Star Age : 11.0 (GY)
Temperature : 3777 (K)
Spectral type : M0
UV portion[%]: 0.4
Visible portion[%]: 19.2
IR portion[%]: 80.3
Metalicity : 0.5
Absolute Magnitude: 14.7
Apparent Magnitude: 22.0
Right Ascension(RA) 171.0167
Declination (DEC) -19.5572
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK http://simbad.cds.unistra.fr/simbad/sim-basic?Ident=HATS-74A&submit=SIMBAD+search
Open Exoplanet Database Link
TOI-737 b
TOI-737 b

  • TOI-737 b is an exoplanet orbiting the star TOI-737, located about 934.8 light-years (286.6 pc) away from Solar System. Its discovery was publicly announced on 2021.
  • The host star TOI-737 has apparent magnitude of 22.0, with absolute magnitude of 14.7.
  • It is 0.6 times more massive and 0.6 times bigger compared with our Sun. The surface temperature is 3777 with its spectral types of M0
  • In this planetary system, the extrasolar planet TOI-737 b orbits around the star TOI-737 every 1.7 days with its orbital distance of 0.02 AU ( 3566413.2 km)
  • (Projected orbit of TOI-737 b around its host star TOI-737)


  • The Star TOI-737 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.178 AU ( 26620961.8 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.246 AU ( 36797126.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.375 AU ( 56070677.0 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.552 AU ( 82510457.6 km)
  • Radiation at Planetary Boundary of TOI-737 b : 145587.33 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-737)



  • Kopparapu Recent Venus for Star TOI-737 distance : 0.200 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TOI-737 distance : 0.253 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TOI-737 distance : 0.245 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TOI-737 distance : 0.269 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-737 distance : 0.486 AU
  • Kopparapu Outer Boundary for Early Mars for Star TOI-737 distance : 0.513 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-737)



  • Original Kopparapu Recent Venus for Star TOI-737 distance : 0.198 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-737 distance : 0.262 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-737 distance : 0.262 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-737 distance : 0.494 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-737 distance : 0.514 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-737)



    (Position in Stellar Map of star TOI-737 and its Exoplanet TOI-737 b)



    (Zoomed position in Stellar Map of star TOI-737 and its Exoplanet TOI-737 b (zoom level 3))

    (Synthetic Spectrum of star TOI-737*)
    *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