Imaginary Picture of LkCa 15 c

Display orbital revolution of LkCa 15 c around the hoststar LKCA 15
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Exoplanet Name : LkCa 15 c
Alternate Name : "2MASS J04391779+2221034 c, GSC 01278-00193 c, IRAS 04363+2215 c, IRAS F04363+2215 c, TYC 1278-193-1 c, WISE J043917.79+
Status : Confirmed
Radius (Rjup / Re): 0.0000 (Rjup) 0.0000 (Rearth)
Mass (Mjup / Me): 0.0000 (Mjup) 0.0000 (Mearth)
Semi Major Axis / Orbital Distance Calculated 18.6000 (AU) 18.6000 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0000
Orbital Period(Observed/Estimated) 0.00 (Days Obs.) 29749.10 (Days Est.)
Surface Gravity (G Earth) nan
Star Radiation at Atmospheric Boundary: 1.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 46.8 (K)
Blackbody T 0.3(K) 43.9 (K)
Blackbody T 0.7(K) 35.5 (K)
Tidally Locked Blackbody T 0.1(K) 55.6 (K)
Tidally Locked Blackbody T 0.3(K) 52.2 (K)
Size Class: Asteroid-size
Mass Class:
Detection Type : Imaging
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : LKCA 15
Alternate Name :
Star Distance(LY) : 472.9
Stellar Radius(Rsun) : 1.0 (Rsun Estimated)
Stellar Mass(Msun) : 1.0 (Msun Measured) 0.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 4400 (K)
Spectral type : K5V
UV portion[%]: 1.2
Visible portion[%]: 29.4
IR portion[%]: 69.4
Metalicity : 0.0
Absolute Magnitude: 6.1
Apparent Magnitude: 11.9
Right Ascension(RA) 69.8250
Declination (DEC) 22.3508
Hubble Space Telescope Guide Star Catalog (GSC) ID 01278-00193
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK https://simbad.u-strasbg.fr/simbad/sim-basic?Ident=LKCA+15&submit=SIMBAD+search
Open Exoplanet Database Link
LkCa 15 c
LkCa 15 c

  • LkCa 15 c is an exoplanet orbiting the star LKCA 15, located about 472.9 light-years (145.0 pc) away from Solar System. Its discovery was publicly announced on 2015.
  • The host star LKCA 15 has apparent magnitude of 11.9, with absolute magnitude of 6.1.
  • It is 1.0 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 4400 with its spectral types of K5V
  • (Projected orbit of LkCa 15 c around its host star LKCA 15)


  • The Star LKCA 15 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.400 AU ( 59778289.9 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.552 AU ( 82629218.6 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.842 AU ( 125908643.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.239 AU ( 185280084.4 km)
  • Radiation at Planetary Boundary of LkCa 15 c : 1.21 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star LKCA 15)



  • Kopparapu Recent Venus for Star LKCA 15 distance : 0.443 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star LKCA 15 distance : 0.561 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star LKCA 15 distance : 0.541 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star LKCA 15 distance : 0.595 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star LKCA 15 distance : 1.043 AU
  • Kopparapu Outer Boundary for Early Mars for Star LKCA 15 distance : 1.100 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star LKCA 15)



  • Original Kopparapu Recent Venus for Star LKCA 15 distance : 0.437 AU
  • Original Kopparapu Runaway Greenhouse for Star LKCA 15 distance : 0.579 AU
  • Original Kopparapu Moist Greenhouse for Star LKCA 15 distance : 0.578 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star LKCA 15 distance : 1.060 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star LKCA 15 distance : 1.103 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star LKCA 15)



    (Position in Stellar Map of star LKCA 15 and its Exoplanet LkCa 15 c)



    (Zoomed position in Stellar Map of star LKCA 15 and its Exoplanet LkCa 15 c (zoom level 3))

    (Synthetic Spectrum of star LKCA 15*)
    *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