Imaginary Picture of 51 Eri b

Display orbital revolution of 51 Eri b around the hoststar 51 Eri
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Exoplanet Name : 51 Eri b
Alternate Name :
Radius (Rjup / Re): 1.1100 (Rjup) 12.4420 (Rearth)
Mass (Mjup / Me): 2.6000 (Mjup) 826.6388 (Mearth)
Semi Major Axis / Orbital Distance Calculated 11.1000 (AU) 11.1000 (AU Est.)
Eccentricity : 0.4900
Orbital Period(Yrs) 28.0896
Orbital Period(Observed/Estimated) 10260.00 (Days Obs.) 10210.70 (Days Est.)
Star Radiation at Atmospheric Boundary: 59.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 123.9 (K)
Blackbody T 0.3(K) 116.3 (K)
Blackbody T 0.7(K) 94.1 (K)
Tidally Locked Blackbody T 0.1(K) 147.3 (K)
Tidally Locked Blackbody T 0.3(K) 138.3 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Imaging
Mass Detection : Spectrum
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : 51 Eri
Alternate Name :
Star Distance(LY) : 95.9
Stellar Radius(Rsun) : 1.4 (Rsun Estimated)
Stellar Mass(Msun) : 1.8 (Msun Measured) 1.7 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 7350 (K)
Spectral type : F0IV
Metalicity : -0.0
Absolute Magnitude: 2.9
Apparent Magnitude: 5.2
Right Ascension(RA) 69.4006
Declination (DEC) -2.4735
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "Delorme,.; Lagrange,..; Chauvin,.; Bonavita,.; Lacour,.; Bonnefoy,.; Ehrenreich,.; Beust,."
Discovery Paper - Title High-resolution imaging of young M-type stars of the solar neighbourhood: probing for companions down to the mass of Jupiter
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=51+Eri+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/51%20Eri%20b/
51 Eri b
51 Eri b

  • 51 Eri b is an exoplanet orbiting the star 51 Eri, located about 95.9 light-years (29.4 pc) away from Solar System. Its discovery was publicly announced on 2015.
  • The host star 51 Eri has apparent magnitude of 5.2, with absolute magnitude of 2.9.
  • It is 1.8 times more massive and 1.4 times bigger compared with our Sun. The surface temperature is 7350 with its spectral types of F0IV
  • In this planetary system, the extrasolar planet 51 Eri b orbits around the star 51 Eri every 10260.0 days with its orbital distance of 11.10 AU ( 1660536364.8 km)
  • (Projected orbit of 51 Eri b around its host star 51 Eri)


  • The Star 51 Eri 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.673 AU ( 250251286.0 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 2.312 AU ( 345912675.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 3.523 AU ( 527094367.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 5.185 AU ( 775642452.4 km)
  • Radiation at Planetary Boundary of 51 Eri b : 59.35 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star 51 Eri)



  • Kopparapu Recent Venus for Star 51 Eri distance : 1.593 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star 51 Eri distance : 2.018 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star 51 Eri distance : 1.948 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star 51 Eri distance : 2.133 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star 51 Eri distance : 3.482 AU
  • Kopparapu Outer Boundary for Early Mars for Star 51 Eri distance : 3.672 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star 51 Eri)



  • Original Kopparapu Recent Venus for Star 51 Eri distance : 1.647 AU
  • Original Kopparapu Runaway Greenhouse for Star 51 Eri distance : 2.063 AU
  • Original Kopparapu Moist Greenhouse for Star 51 Eri distance : 2.180 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star 51 Eri distance : 3.545 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star 51 Eri distance : 3.687 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star 51 Eri)



    (Position in Stellar Map of star 51 Eri and its Exoplanet 51 Eri b)



    (Zoomed position in Stellar Map of star 51 Eri and its Exoplanet 51 Eri b (zoom level 3))