Imaginary Picture of K2-165 b

Display orbital revolution of K2-165 b around the hoststar K2-165
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Exoplanet Name : K2-165 b
Alternate Name : "2MASS J12193607+0058064 b, EPIC 201528828 b, EPIC 201528828.01, TYC 281-875-1 b, WISE J121936.10+005806.0 b"
Status : Confirmed
Radius (Rjup / Re): 0.1140 (Rjup) 1.2778 (Rearth)
Mass (Mjup / Me): 0.0075 (Mjup) 2.3693 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0326 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0064
Orbital Period(Observed/Estimated) 2.35 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.4510
Star Radiation at Atmospheric Boundary: 535215.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1207.2 (K)
Blackbody T 0.3(K) 1133.7 (K)
Blackbody T 0.7(K) 917.3 (K)
Tidally Locked Blackbody T 0.1(K) 1435.6 (K)
Tidally Locked Blackbody T 0.3(K) 1348.2 (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 : K2-165
Alternate Name : "2MASS J12193607+0058064, EPIC 201528828, TYC 281-875-1, WISE J121936.10+005806.0"
Star Distance(LY) : 428.1
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5185 (K)
Spectral type : K0
UV portion[%]: 4.9
Visible portion[%]: 39.9
IR portion[%]: 55.2
Metalicity : -0.1
Absolute Magnitude: 4.5
Apparent Magnitude: 10.1
Right Ascension(RA) 184.9003
Declination (DEC) 0.9684
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=K2-165+&submit=SIMBAD+search
Open Exoplanet Database Link
K2-165 b
K2-165 b

  • K2-165 b is an exoplanet orbiting the star K2-165, located about 428.1 light-years (131.3 pc) away from Solar System. Its discovery was publicly announced on 2018.
  • The host star K2-165 has apparent magnitude of 10.1, with absolute magnitude of 4.5.
  • It is 0.8 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5185 with its spectral types of K0
  • In this planetary system, the extrasolar planet K2-165 b orbits around the star K2-165 every 2.4 days with its orbital distance of 0.03 AU ( 4870246.2 km)
  • (Projected orbit of K2-165 b around its host star K2-165)


  • The Star K2-165 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.466 AU ( 69702061.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.644 AU ( 96346463.9 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.981 AU ( 146810689.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.444 AU ( 216038361.0 km)
  • Radiation at Planetary Boundary of K2-165 b : 535215.67 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star K2-165)



  • Kopparapu Recent Venus for Star K2-165 distance : 0.499 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star K2-165 distance : 0.632 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star K2-165 distance : 0.611 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star K2-165 distance : 0.670 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-165 distance : 1.138 AU
  • Kopparapu Outer Boundary for Early Mars for Star K2-165 distance : 1.200 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star K2-165)



  • Original Kopparapu Recent Venus for Star K2-165 distance : 0.495 AU
  • Original Kopparapu Runaway Greenhouse for Star K2-165 distance : 0.651 AU
  • Original Kopparapu Moist Greenhouse for Star K2-165 distance : 0.655 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-165 distance : 1.157 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star K2-165 distance : 1.204 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star K2-165)



    (Position in Stellar Map of star K2-165 and its Exoplanet K2-165 b)



    (Zoomed position in Stellar Map of star K2-165 and its Exoplanet K2-165 b (zoom level 3))

    (Synthetic Spectrum of star K2-165*)
    *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