Imaginary Picture of TOI-1174 b

Display orbital revolution of TOI-1174 b around the hoststar TOI-1174
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Exoplanet Name : TOI-1174 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.2105 (Rjup) 2.3595 (Rearth)
Mass (Mjup / Me): 0.1010 (Mjup) 32.1117 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0800 (AU) 0.0800 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0245
Orbital Period(Observed/Estimated) 8.95 (Days Obs.) 8.96 (Days Est.)
Surface Gravity (G Earth) 5.7680
Star Radiation at Atmospheric Boundary: 73532.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 735.0 (K)
Blackbody T 0.3(K) 690.2 (K)
Blackbody T 0.7(K) 558.4 (K)
Tidally Locked Blackbody T 0.1(K) 874.0 (K)
Tidally Locked Blackbody T 0.3(K) 820.8 (K)
Size Class: sub-Neptune-size
Mass Class:
Detection Type : Imaging
Mass Detection : Radial Velocity
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : TOI-1174
Alternate Name :
Star Distance(LY) : 308.7
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5077 (K)
Spectral type : K1
UV portion[%]: 3.7
Visible portion[%]: 38.1
IR portion[%]: 58.2
Metalicity : 0.0
Absolute Magnitude: 17.1
Apparent Magnitude: 22.0
Right Ascension(RA) 209.2171
Declination (DEC) 68.6183
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-1174 b
TOI-1174 b

  • TOI-1174 b is an exoplanet orbiting the star TOI-1174, located about 308.7 light-years (94.6 pc) away from Solar System. Its discovery was publicly announced on 2024.
  • The host star TOI-1174 has apparent magnitude of 22.0, with absolute magnitude of 17.1.
  • It is 0.8 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5077 with its spectral types of K1
  • In this planetary system, the extrasolar planet TOI-1174 b orbits around the star TOI-1174 every 9.0 days with its orbital distance of 0.08 AU ( 11967829.7 km)
  • (Projected orbit of TOI-1174 b around its host star TOI-1174)


  • The Star TOI-1174 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.424 AU ( 63487179.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.587 AU ( 87755872.9 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.894 AU ( 133720529.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.315 AU ( 196775617.7 km)
  • Radiation at Planetary Boundary of TOI-1174 b : 73532.73 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-1174)



  • Kopparapu Recent Venus for Star TOI-1174 distance : 0.457 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TOI-1174 distance : 0.579 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TOI-1174 distance : 0.559 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TOI-1174 distance : 0.614 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-1174 distance : 1.046 AU
  • Kopparapu Outer Boundary for Early Mars for Star TOI-1174 distance : 1.104 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-1174)



  • Original Kopparapu Recent Venus for Star TOI-1174 distance : 0.453 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-1174 distance : 0.597 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-1174 distance : 0.599 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-1174 distance : 1.064 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-1174 distance : 1.107 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-1174)



    (Position in Stellar Map of star TOI-1174 and its Exoplanet TOI-1174 b)



    (Zoomed position in Stellar Map of star TOI-1174 and its Exoplanet TOI-1174 b (zoom level 3))

    (Synthetic Spectrum of star TOI-1174*)
    *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