Imaginary Picture of K2-16 b

Display orbital revolution of K2-16 b around the hoststar K2-16
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Exoplanet Name : K2-16 b
Alternate Name : "2MASS J11402333+0433264 b, EPIC 201754305 b, EPIC 201754305.02, WISE J114023.33+043326.7 b"
Status : Confirmed
Radius (Rjup / Re): 0.1800 (Rjup) 2.0176 (Rearth)
Mass (Mjup / Me): 0.0159 (Mjup) 5.0677 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0667 (AU) 0.0667 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0209
Orbital Period(Observed/Estimated) 7.62 (Days Obs.) 7.69 (Days Est.)
Surface Gravity (G Earth) 1.2449
Star Radiation at Atmospheric Boundary: 61692.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 703.4 (K)
Blackbody T 0.3(K) 660.6 (K)
Blackbody T 0.7(K) 534.5 (K)
Tidally Locked Blackbody T 0.1(K) 836.5 (K)
Tidally Locked Blackbody T 0.3(K) 785.5 (K)
Size Class: sub-Neptune-size
Mass Class:
Detection Type : Primary Transit
Mass Detection :
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : K2-16
Alternate Name : "EPIC 201754305, 2MASS J11402333+0433264, WISE J114023.33+043326.7"
Star Distance(LY) : 1085.8
Stellar Radius(Rsun) : 0.7 (Rsun Measured)
Stellar Mass(Msun) : 0.7 (Msun Measured) 0.7 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 4761 (K)
Spectral type : K3 V
UV portion[%]: 2.3
Visible portion[%]: 35.0
IR portion[%]: 62.6
Metalicity : -0.3
Absolute Magnitude: 6.7
Apparent Magnitude: 14.3
Right Ascension(RA) 175.0973
Declination (DEC) 4.5573
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "Benjamin T. Montet, Timothy D. Morton, Daniel Foreman-Mackey, John Asher Johnson, David W. Hogg, Brendan P. Bowler, David W. Latham, Allyson Bieryla, Andrew W. Mann, "
Discovery Paper - Title "STELLAR AND PLANETARY PROPERTIES OF K2 CAMPAIGN 1 CANDIDATES AND VALIDATION OF 18 SYSTEMS, INCLUDING A PLANET RECEIVING EARTH-LIKE INSOLATION "
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=K2-16+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/EPIC%20201754305%20b/
K2-16 b
K2-16 b

  • K2-16 b is an exoplanet orbiting the star K2-16, located about 1085.8 light-years (332.9 pc) away from Solar System. Its discovery was publicly announced on 2015.
  • The host star K2-16 has apparent magnitude of 14.3, with absolute magnitude of 6.7.
  • It is 0.7 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 4761 with its spectral types of K3 V
  • In this planetary system, the extrasolar planet K2-16 b orbits around the star K2-16 every 7.6 days with its orbital distance of 0.07 AU ( 9978178.0 km)
  • (Projected orbit of K2-16 b around its host star K2-16)


  • The Star K2-16 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.324 AU ( 48483996.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.448 AU ( 67017553.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.683 AU ( 102119920.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.005 AU ( 150273936.7 km)
  • Radiation at Planetary Boundary of K2-16 b : 61692.69 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star K2-16)



  • Kopparapu Recent Venus for Star K2-16 distance : 0.354 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star K2-16 distance : 0.449 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star K2-16 distance : 0.433 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star K2-16 distance : 0.476 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-16 distance : 0.821 AU
  • Kopparapu Outer Boundary for Early Mars for Star K2-16 distance : 0.866 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star K2-16)



  • Original Kopparapu Recent Venus for Star K2-16 distance : 0.350 AU
  • Original Kopparapu Runaway Greenhouse for Star K2-16 distance : 0.463 AU
  • Original Kopparapu Moist Greenhouse for Star K2-16 distance : 0.463 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-16 distance : 0.835 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star K2-16 distance : 0.868 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star K2-16)



    (Position in Stellar Map of star K2-16 and its Exoplanet K2-16 b)



    (Zoomed position in Stellar Map of star K2-16 and its Exoplanet K2-16 b (zoom level 3))

    (Synthetic Spectrum of star K2-16*)
    *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