Imaginary Picture of K2-58 c

Display orbital revolution of K2-58 c around the hoststar K2-58
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Exoplanet Name : K2-58 c
Alternate Name : EPIC 206026904.02
Status : Confirmed
Radius (Rjup / Re): 0.1450 (Rjup) 1.6253 (Rearth)
Mass (Mjup / Me): 0.0130 (Mjup) 4.1446 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0350 (AU) 0.0350 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0069
Orbital Period(Observed/Estimated) 2.54 (Days Obs.) 2.54 (Days Est.)
Surface Gravity (G Earth) 1.5690
Star Radiation at Atmospheric Boundary: 635649.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1260.2 (K)
Blackbody T 0.3(K) 1183.5 (K)
Blackbody T 0.7(K) 957.6 (K)
Tidally Locked Blackbody T 0.1(K) 1498.7 (K)
Tidally Locked Blackbody T 0.3(K) 1407.4 (K)
Size Class: super-Earth-size
Mass Class:
Detection Type : Primary Transit
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : K2-58
Alternate Name : "2MASS J22151722-1402593, EPIC 206026904, WISE J221517.23-140259.4"
Star Distance(LY) : 593.7
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5413 (K)
Spectral type : G7
UV portion[%]: 6.5
Visible portion[%]: 42.5
IR portion[%]: 51.0
Metalicity : 0.0
Absolute Magnitude: 4.5
Apparent Magnitude: 10.8
Right Ascension(RA) 333.8218
Declination (DEC) -14.0498
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=K2-58+&submit=SIMBAD+search
Open Exoplanet Database Link
K2-58 c
K2-58 c

  • K2-58 c is an exoplanet orbiting the star K2-58, located about 593.7 light-years (182.0 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star K2-58 has apparent magnitude of 10.8, with absolute magnitude of 4.5.
  • It is 0.9 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5413 with its spectral types of G7
  • In this planetary system, the extrasolar planet K2-58 c orbits around the star K2-58 every 2.5 days with its orbital distance of 0.04 AU ( 5235925.5 km)
  • (Projected orbit of K2-58 c around its host star K2-58)


  • The Star K2-58 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.546 AU ( 81664370.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.755 AU ( 112881501.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.150 AU ( 172006427.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.692 AU ( 253114992.9 km)
  • Radiation at Planetary Boundary of K2-58 c : 635649.53 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star K2-58)



  • Kopparapu Recent Venus for Star K2-58 distance : 0.578 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star K2-58 distance : 0.732 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star K2-58 distance : 0.707 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star K2-58 distance : 0.775 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-58 distance : 1.307 AU
  • Kopparapu Outer Boundary for Early Mars for Star K2-58 distance : 1.378 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star K2-58)



  • Original Kopparapu Recent Venus for Star K2-58 distance : 0.575 AU
  • Original Kopparapu Runaway Greenhouse for Star K2-58 distance : 0.753 AU
  • Original Kopparapu Moist Greenhouse for Star K2-58 distance : 0.761 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-58 distance : 1.329 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star K2-58 distance : 1.382 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star K2-58)



    (Position in Stellar Map of star K2-58 and its Exoplanet K2-58 c)



    (Zoomed position in Stellar Map of star K2-58 and its Exoplanet K2-58 c (zoom level 3))

    (Synthetic Spectrum of star K2-58*)
    *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