Imaginary Picture of HR 8799 e
/
Exoplanet Name : HR 8799 e
Alternate Name :
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 9.0000 (Mjup) 2861.4420 (Mearth)
Semi Major Axis / Orbital Distance Calculated 14.5000 (AU) 14.5000 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 49.2800
Orbital Period(Observed/Estimated) 18000.00 (Days Obs.) 16146.56 (Days Est.)
Star Radiation at Atmospheric Boundary: 62.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 125.5 (K)
Blackbody T 0.3(K) 117.9 (K)
Blackbody T 0.7(K) 95.4 (K)
Tidally Locked Blackbody T 0.1(K) 149.3 (K)
Tidally Locked Blackbody T 0.3(K) 140.2 (K)
Size Class: Jupiter-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 : HR 8799
Alternate Name : HD 218396
Star Distance(LY) : 128.5
Stellar Radius(Rsun) : 1.5 (Rsun Measured)
Stellar Mass(Msun) : 1.6 (Msun Measured) 1.3 (Msun Estimated)
Star Age : 0.1 (GY)
Temperature : 8310 (K)
Spectral type : A5V
Metalicity : -0.5
Absolute Magnitude: 3.0
Apparent Magnitude: 6.0
Right Ascension(RA) 346.8708
Declination (DEC) 21.1342
Hubble Space Telescope Guide Star Catalog (GSC) ID 0
Discovered by
Discovery Paper - Authors "Baines,llyn.; White,ussel.; Huber,aniel; Jones,eremy; Boyajian,abetha; McAlister,arold.; tenrummelaar,heo.; Turner,ils.; Sturmann,udit; Sturmann,aszlo; Goldfinger,..; Farrington,hristopher.; Riedel,dric.; Ireland,ichael; vonraun,aspar; Ridgway,tephen."
Discovery Paper - Title The CHARA Array Angular Diameter of HR 8799 Favors Planetary Masses for its Imaged Companions
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HR+8799+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HR%208799%20e/
HR 8799 e
HR 8799 e

  • HR 8799 e is an exoplanet orbiting the star HR 8799, located about 128.5 light-years (39.4 pc) away from Solar System. Its discovery was publicly announced on 2010.
  • The host star HR 8799 has apparent magnitude of 6.0, with absolute magnitude of 3.0.
  • It is 1.6 times more massive and 1.5 times bigger compared with our Sun. The surface temperature is 8310 with its spectral types of A5V
  • In this planetary system, the extrasolar planet HR 8799 e orbits around the star HR 8799 every 18000.0 days with its orbital distance of 14.50 AU ( 2169169125.2 km)
  • (Projected orbit of HR 8799 e around its host star HR 8799)


  • The Star HR 8799 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 2.244 AU ( 335700060.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 3.102 AU ( 464025212.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 4.726 AU ( 707071734.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 6.955 AU ( 1040487032.3 km)
  • Radiation at Planetary Boundary of HR 8799 e : 62.58 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HR 8799)



  • Kopparapu Recent Venus for Star HR 8799 distance : 2.120 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HR 8799 distance : 2.686 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HR 8799 distance : 2.594 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HR 8799 distance : 2.838 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HR 8799 distance : 4.634 AU
  • Kopparapu Outer Boundary for Early Mars for Star HR 8799 distance : 4.886 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HR 8799)



  • Original Kopparapu Recent Venus for Star HR 8799 distance : 2.201 AU
  • Original Kopparapu Runaway Greenhouse for Star HR 8799 distance : 2.739 AU
  • Original Kopparapu Moist Greenhouse for Star HR 8799 distance : 2.913 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HR 8799 distance : 4.714 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HR 8799 distance : 4.902 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HR 8799)



    (Position in Stellar Map of star HR 8799 and its Exoplanet HR 8799 e)



    (Zoomed position in Stellar Map of star HR 8799 and its Exoplanet HR 8799 e (zoom level 3))