Imaginary Picture of EPIC 212424622 b

Display orbital revolution of EPIC 212424622 b around the hoststar EPIC 212424622
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Exoplanet Name : EPIC 212424622 b
Alternate Name : "2MASS J13291954-1421340 b, EPIC 212424622.02, K2-305 b, WISE J132919.53-142133.9 b"
Radius (Rjup / Re): 0.1940 (Rjup) 2.1745 (Rearth)
Mass (Mjup / Me): 0.0171 (Mjup) 5.4333 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.1397 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0495
Orbital Period(Observed/Estimated) 18.10 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.1490
Star Radiation at Atmospheric Boundary: 8602.8 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 429.8 (K)
Blackbody T 0.3(K) 403.7 (K)
Blackbody T 0.7(K) 326.6 (K)
Tidally Locked Blackbody T 0.1(K) 511.2 (K)
Tidally Locked Blackbody T 0.3(K) 480.0 (K)
Size Class: sub-Neptune-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 : EPIC 212424622
Alternate Name : "2MASS J13291954-1421340, K2-305, WISE J132919.53-142133.9"
Star Distance(LY) : 2030.9
Stellar Radius(Rsun) : 1.1 (Rsun Estimated)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3300 (K)
Spectral type : M9
UV portion[%]: 0.2
Visible portion[%]: 11.2
IR portion[%]: 88.6
Metalicity : 0.0
Absolute Magnitude: 3.1
Apparent Magnitude: 12.1
Right Ascension(RA) 202.3314
Declination (DEC) -14.3595
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
EPIC 212424622 b
EPIC 212424622 b

  • EPIC 212424622 b is an exoplanet orbiting the star EPIC 212424622, located about 2030.9 light-years (622.7 pc) away from Solar System. Its discovery was publicly announced on 2019.
  • The host star EPIC 212424622 has apparent magnitude of 12.1, with absolute magnitude of 3.1.
  • It is 1.1 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 3300 with its spectral types of M9
  • In this planetary system, the extrasolar planet EPIC 212424622 b orbits around the star EPIC 212424622 every 18.1 days with its orbital distance of 0.14 AU ( 20896077.8 km)
  • (Projected orbit of EPIC 212424622 b around its host star EPIC 212424622)


  • The Star EPIC 212424622 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.253 AU ( 37915371.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.350 AU ( 52408951.9 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.534 AU ( 79859644.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.786 AU ( 117516965.4 km)
  • Radiation at Planetary Boundary of EPIC 212424622 b : 8602.81 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star EPIC 212424622)



  • Kopparapu Recent Venus for Star EPIC 212424622 distance : 0.287 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star EPIC 212424622 distance : 0.363 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star EPIC 212424622 distance : 0.351 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star EPIC 212424622 distance : 0.386 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star EPIC 212424622 distance : 0.714 AU
  • Kopparapu Outer Boundary for Early Mars for Star EPIC 212424622 distance : 0.753 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star EPIC 212424622)



  • Original Kopparapu Recent Venus for Star EPIC 212424622 distance : 0.285 AU
  • Original Kopparapu Runaway Greenhouse for Star EPIC 212424622 distance : 0.376 AU
  • Original Kopparapu Moist Greenhouse for Star EPIC 212424622 distance : 0.377 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star EPIC 212424622 distance : 0.725 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star EPIC 212424622 distance : 0.754 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star EPIC 212424622)



    (Position in Stellar Map of star EPIC 212424622 and its Exoplanet EPIC 212424622 b)



    (Zoomed position in Stellar Map of star EPIC 212424622 and its Exoplanet EPIC 212424622 b (zoom level 3))

    (Synthetic Spectrum of star EPIC 212424622*)
    *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