Imaginary Picture of K2-260 b

Display orbital revolution of K2-260 b around the hoststar K2-260
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Exoplanet Name : K2-260 b
Alternate Name : "EPIC 246911830 b, 2MASS J05072816+1652037 b, WISE J050728.15+165203.7 b"
Status : Confirmed
Radius (Rjup / Re): 1.5520 (Rjup) 17.3964 (Rearth)
Mass (Mjup / Me): 1.4200 (Mjup) 451.4720 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0404 (AU) 0.0404 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0072
Orbital Period(Observed/Estimated) 2.63 (Days Obs.) 2.52 (Days Est.)
Surface Gravity (G Earth) 1.4918
Star Radiation at Atmospheric Boundary: 3526589.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1934.1 (K)
Blackbody T 0.3(K) 1816.3 (K)
Blackbody T 0.7(K) 1469.6 (K)
Tidally Locked Blackbody T 0.1(K) 2300.1 (K)
Tidally Locked Blackbody T 0.3(K) 2160.0 (K)
Size Class: Super-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 : K2-260
Alternate Name : "K2-260, 2MASS J05072816+1652037, EPIC 246911830, WISE J050728.15+165203.7"
Star Distance(LY) : 2205.9
Stellar Radius(Rsun) : 1.7 (Rsun Measured)
Stellar Mass(Msun) : 1.4 (Msun Measured) 1.3 (Msun Estimated)
Star Age : 1.9 (GY)
Temperature : 6367 (K)
Spectral type : F6 V
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : -0.1
Absolute Magnitude: 3.5
Apparent Magnitude: 12.7
Right Ascension(RA) 76.8673
Declination (DEC) 16.8677
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
K2-260 b
K2-260 b

  • K2-260 b is an exoplanet orbiting the star K2-260, located about 2205.9 light-years (676.3 pc) away from Solar System. Its discovery was publicly announced on 2018.
  • The host star K2-260 has apparent magnitude of 12.7, with absolute magnitude of 3.5.
  • It is 1.4 times more massive and 1.7 times bigger compared with our Sun. The surface temperature is 6367 with its spectral types of F6 V
  • In this planetary system, the extrasolar planet K2-260 b orbits around the star K2-260 every 2.6 days with its orbital distance of 0.04 AU ( 6043754.0 km)
  • (Projected orbit of K2-260 b around its host star K2-260)


  • The Star K2-260 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.484 AU ( 222031461.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 2.052 AU ( 306905503.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 3.126 AU ( 467656068.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 4.600 AU ( 688176391.5 km)
  • Radiation at Planetary Boundary of K2-260 b : 3526589.33 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star K2-260)



  • Kopparapu Recent Venus for Star K2-260 distance : 1.484 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star K2-260 distance : 1.880 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star K2-260 distance : 1.815 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star K2-260 distance : 1.989 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-260 distance : 3.277 AU
  • Kopparapu Outer Boundary for Early Mars for Star K2-260 distance : 3.457 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star K2-260)



  • Original Kopparapu Recent Venus for Star K2-260 distance : 1.505 AU
  • Original Kopparapu Runaway Greenhouse for Star K2-260 distance : 1.928 AU
  • Original Kopparapu Moist Greenhouse for Star K2-260 distance : 1.992 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-260 distance : 3.336 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star K2-260 distance : 3.470 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star K2-260)



    (Position in Stellar Map of star K2-260 and its Exoplanet K2-260 b)



    (Zoomed position in Stellar Map of star K2-260 and its Exoplanet K2-260 b (zoom level 3))

    (Synthetic Spectrum of star K2-260*)
    *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