Imaginary Picture of HD 283869 b
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Exoplanet Name : HD 283869 b
Alternate Name :
Radius (Rjup / Re): 0.1749 (Rjup) 1.9605 (Rearth)
Mass (Mjup / Me): 0.0155 (Mjup) 4.9341 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.4000 (AU) 0.4000 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.2902
Orbital Period(Observed/Estimated) 106.00 (Days Obs.) 107.41 (Days Est.)
Star Radiation at Atmospheric Boundary: 1567.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 280.8 (K)
Blackbody T 0.3(K) 263.7 (K)
Blackbody T 0.7(K) 213.4 (K)
Tidally Locked Blackbody T 0.1(K) 334.0 (K)
Tidally Locked Blackbody T 0.3(K) 313.6 (K)
Size Class: sub-Neptune-size
Mass Class:
Detection Type : Primary Transit
Mass Detection :
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Habitable
Habitability by Kopparapu: Not habitable
Star Name : HD 283869
Alternate Name : EPIC 248045685
Star Distance(LY) : 155.0
Stellar Radius(Rsun) : 0.7 (Rsun Measured)
Stellar Mass(Msun) : 0.7 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 4655 (K)
Spectral type : K4
Metalicity : 0.1
Absolute Magnitude: 7.2
Apparent Magnitude: 10.6
Right Ascension(RA) 71.9250
Declination (DEC) 26.1500
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
HD 283869 b
HD 283869 b

  • HD 283869 b is an exoplanet orbiting the star HD 283869, located about 155.0 light-years (47.5 pc) away from Solar System. Its discovery was publicly announced on 2018.
  • The host star HD 283869 has apparent magnitude of 10.6, with absolute magnitude of 7.2.
  • It is 0.7 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 4655 with its spectral types of K4
  • In this planetary system, the extrasolar planet HD 283869 b orbits around the star HD 283869 every 106.0 days with its orbital distance of 0.40 AU ( 59839148.3 km)
  • (Projected orbit of HD 283869 b around its host star HD 283869)


  • The Star HD 283869 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.310 AU ( 46349112.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.428 AU ( 64066585.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.653 AU ( 97623298.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.960 AU ( 143656959.9 km)
  • Radiation at Planetary Boundary of HD 283869 b : 1567.66 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 283869)



  • Kopparapu Recent Venus for Star HD 283869 distance : 0.340 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 283869 distance : 0.431 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 283869 distance : 0.416 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 283869 distance : 0.457 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 283869 distance : 0.792 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 283869 distance : 0.836 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 283869)



  • Original Kopparapu Recent Venus for Star HD 283869 distance : 0.336 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 283869 distance : 0.444 AU
  • Original Kopparapu Moist Greenhouse for Star HD 283869 distance : 0.444 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 283869 distance : 0.805 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 283869 distance : 0.837 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 283869)



    (Position in Stellar Map of star HD 283869 and its Exoplanet HD 283869 b)



    (Zoomed position in Stellar Map of star HD 283869 and its Exoplanet HD 283869 b (zoom level 3))