Imaginary Picture of TOI-674 b

Display orbital revolution of TOI-674 b around the hoststar TOI-674
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Exoplanet Name : TOI-674 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.4693 (Rjup) 5.2604 (Rearth)
Mass (Mjup / Me): 0.0739 (Mjup) 23.4956 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0231 (AU) 0.0231 (AU Est.)
Eccentricity : 0.1000
Orbital Period(Yrs) 0.0054
Orbital Period(Observed/Estimated) 1.98 (Days Obs.) 1.93 (Days Est.)
Surface Gravity (G Earth) 0.8491
Star Radiation at Atmospheric Boundary: 61474.8 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 702.8 (K)
Blackbody T 0.3(K) 660.0 (K)
Blackbody T 0.7(K) 534.0 (K)
Tidally Locked Blackbody T 0.1(K) 835.7 (K)
Tidally Locked Blackbody T 0.3(K) 784.9 (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 : TOI-674
Alternate Name :
Star Distance(LY) : 150.6
Stellar Radius(Rsun) : 0.4 (Rsun Measured)
Stellar Mass(Msun) : 0.4 (Msun Measured) 0.4 (Msun Estimated)
Star Age : 5.5 (GY)
Temperature : 3505 (K)
Spectral type : M4
UV portion[%]: 0.3
Visible portion[%]: 14.6
IR portion[%]: 85.1
Metalicity : 0.1
Absolute Magnitude: 10.9
Apparent Magnitude: 14.2
Right Ascension(RA) 164.5875
Declination (DEC) -36.8581
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
TOI-674 b
TOI-674 b

  • TOI-674 b is an exoplanet orbiting the star TOI-674, located about 150.6 light-years (46.2 pc) away from Solar System. Its discovery was publicly announced on 2021.
  • The host star TOI-674 has apparent magnitude of 14.2, with absolute magnitude of 10.9.
  • It is 0.4 times more massive and 0.4 times bigger compared with our Sun. The surface temperature is 3505 with its spectral types of M4
  • In this planetary system, the extrasolar planet TOI-674 b orbits around the star TOI-674 every 2.0 days with its orbital distance of 0.02 AU ( 3455710.8 km)
  • (Projected orbit of TOI-674 b around its host star TOI-674)


  • The Star TOI-674 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.112 AU ( 16761630.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.155 AU ( 23168953.2 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.236 AU ( 35304357.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.347 AU ( 51951908.4 km)
  • Radiation at Planetary Boundary of TOI-674 b : 61474.80 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-674)



  • Kopparapu Recent Venus for Star TOI-674 distance : 0.127 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TOI-674 distance : 0.160 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TOI-674 distance : 0.155 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TOI-674 distance : 0.170 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-674 distance : 0.312 AU
  • Kopparapu Outer Boundary for Early Mars for Star TOI-674 distance : 0.329 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-674)



  • Original Kopparapu Recent Venus for Star TOI-674 distance : 0.126 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-674 distance : 0.166 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-674 distance : 0.166 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-674 distance : 0.317 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-674 distance : 0.329 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-674)



    (Position in Stellar Map of star TOI-674 and its Exoplanet TOI-674 b)



    (Zoomed position in Stellar Map of star TOI-674 and its Exoplanet TOI-674 b (zoom level 3))

    (Synthetic Spectrum of star TOI-674*)
    *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