Imaginary Picture of TOI-1273 b

Display orbital revolution of TOI-1273 b around the hoststar TOI-1273
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Exoplanet Name : TOI-1273 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9900 (Rjup) 11.0969 (Rearth)
Mass (Mjup / Me): 0.2220 (Mjup) 70.5822 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0549 (AU) 0.0549 (AU Est.)
Eccentricity : 0.0550
Orbital Period(Yrs) 0.0127
Orbital Period(Observed/Estimated) 4.63 (Days Obs.) 4.56 (Days Est.)
Surface Gravity (G Earth) 0.5732
Star Radiation at Atmospheric Boundary: 479204.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1174.3 (K)
Blackbody T 0.3(K) 1102.8 (K)
Blackbody T 0.7(K) 892.3 (K)
Tidally Locked Blackbody T 0.1(K) 1396.5 (K)
Tidally Locked Blackbody T 0.3(K) 1311.4 (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-1273
Alternate Name :
Star Distance(LY) : 574.0
Stellar Radius(Rsun) : 1.1 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 3.1 (GY)
Temperature : 5690 (K)
Spectral type : G4
UV portion[%]: 7.6
Visible portion[%]: 44.4
IR portion[%]: 48.1
Metalicity : 0.1
Absolute Magnitude: 4.8
Apparent Magnitude: 11.0
Right Ascension(RA) 214.1209
Declination (DEC) 58.3902
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-1273 b
TOI-1273 b

  • TOI-1273 b is an exoplanet orbiting the star TOI-1273, located about 574.0 light-years (176.0 pc) away from Solar System. Its discovery was publicly announced on 2024.
  • The host star TOI-1273 has apparent magnitude of 11.0, with absolute magnitude of 4.8.
  • It is 1.1 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 5690 with its spectral types of G4
  • In this planetary system, the extrasolar planet TOI-1273 b orbits around the star TOI-1273 every 4.6 days with its orbital distance of 0.05 AU ( 8212923.1 km)
  • (Projected orbit of TOI-1273 b around its host star TOI-1273)


  • The Star TOI-1273 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.743 AU ( 111221439.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.028 AU ( 153737094.6 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.566 AU ( 234261310.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.304 AU ( 344725780.3 km)
  • Radiation at Planetary Boundary of TOI-1273 b : 479204.53 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-1273)



  • Kopparapu Recent Venus for Star TOI-1273 distance : 0.775 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TOI-1273 distance : 0.981 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TOI-1273 distance : 0.947 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TOI-1273 distance : 1.039 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-1273 distance : 1.736 AU
  • Kopparapu Outer Boundary for Early Mars for Star TOI-1273 distance : 1.831 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-1273)



  • Original Kopparapu Recent Venus for Star TOI-1273 distance : 0.774 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-1273 distance : 1.008 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-1273 distance : 1.025 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-1273 distance : 1.767 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-1273 distance : 1.837 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-1273)



    (Position in Stellar Map of star TOI-1273 and its Exoplanet TOI-1273 b)



    (Zoomed position in Stellar Map of star TOI-1273 and its Exoplanet TOI-1273 b (zoom level 3))

    (Synthetic Spectrum of star TOI-1273*)
    *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