Imaginary Picture of K2-267 Ab

Display orbital revolution of K2-267 Ab around the hoststar K2-267 A
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Exoplanet Name : K2-267 Ab
Alternate Name : "TOI-2461 b, TOI-2461.01, EPIC 246851721 b"
Status : Confirmed
Radius (Rjup / Re): 1.0510 (Rjup) 11.7807 (Rearth)
Mass (Mjup / Me): 3.0000 (Mjup) 953.8140 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0723 (AU) 0.0723 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0169
Orbital Period(Observed/Estimated) 6.18 (Days Obs.) 6.17 (Days Est.)
Surface Gravity (G Earth) 6.8727
Star Radiation at Atmospheric Boundary: 908034.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1377.7 (K)
Blackbody T 0.3(K) 1293.8 (K)
Blackbody T 0.7(K) 1046.9 (K)
Tidally Locked Blackbody T 0.1(K) 1638.4 (K)
Tidally Locked Blackbody T 0.3(K) 1538.6 (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 : K2-267 A
Alternate Name : "TYC 1283-739-1, 2MASS J05154075+1616435, TOI-2461"
Star Distance(LY) : 1226.3
Stellar Radius(Rsun) : 1.6 (Rsun Measured)
Stellar Mass(Msun) : 1.3 (Msun Measured) 1.3 (Msun Estimated)
Star Age : 3.1 (GY)
Temperature : 6189 (K)
Spectral type : F5V
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : 0.1
Absolute Magnitude: 3.5
Apparent Magnitude: 11.4
Right Ascension(RA) 78.9198
Declination (DEC) 16.2787
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
K2-267 Ab
K2-267 Ab

  • K2-267 Ab is an exoplanet orbiting the star K2-267 A, located about 1226.3 light-years (376.0 pc) away from Solar System. Its discovery was publicly announced on 2018.
  • The host star K2-267 A has apparent magnitude of 11.4, with absolute magnitude of 3.5.
  • It is 1.3 times more massive and 1.6 times bigger compared with our Sun. The surface temperature is 6189 with its spectral types of F5V
  • In this planetary system, the extrasolar planet K2-267 Ab orbits around the star K2-267 A every 6.2 days with its orbital distance of 0.07 AU ( 10814430.1 km)
  • (Projected orbit of K2-267 Ab around its host star K2-267 A)


  • The Star K2-267 A 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.348 AU ( 201597481.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.863 AU ( 278660403.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.838 AU ( 424616787.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 4.177 AU ( 624842204.0 km)
  • Radiation at Planetary Boundary of K2-267 Ab : 908034.48 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star K2-267 A)



  • Kopparapu Recent Venus for Star K2-267 A distance : 1.362 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star K2-267 A distance : 1.725 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star K2-267 A distance : 1.666 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star K2-267 A distance : 1.826 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-267 A distance : 3.017 AU
  • Kopparapu Outer Boundary for Early Mars for Star K2-267 A distance : 3.183 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star K2-267 A)



  • Original Kopparapu Recent Venus for Star K2-267 A distance : 1.376 AU
  • Original Kopparapu Runaway Greenhouse for Star K2-267 A distance : 1.770 AU
  • Original Kopparapu Moist Greenhouse for Star K2-267 A distance : 1.821 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-267 A distance : 3.072 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star K2-267 A distance : 3.194 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star K2-267 A)



    (Position in Stellar Map of star K2-267 A and its Exoplanet K2-267 Ab)



    (Zoomed position in Stellar Map of star K2-267 A and its Exoplanet K2-267 Ab (zoom level 3))

    (Synthetic Spectrum of star K2-267 A*)
    *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