Imaginary Picture of HD 19994 b
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Exoplanet Name : HD 19994 b
Alternate Name : 94 Cet b
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 1.6800 (Mjup) 534.1358 (Mearth)
Semi Major Axis / Orbital Distance Calculated 1.4200 (AU) 1.4200 (AU Est.)
Eccentricity : 0.3000
Orbital Period(Yrs) 1.4666
Orbital Period(Observed/Estimated) 535.70 (Days Obs.) 533.91 (Days Est.)
Star Radiation at Atmospheric Boundary: 2904.8 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 327.7 (K)
Blackbody T 0.3(K) 307.7 (K)
Blackbody T 0.7(K) 249.0 (K)
Tidally Locked Blackbody T 0.1(K) 389.7 (K)
Tidally Locked Blackbody T 0.3(K) 365.9 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : HD 19994
Alternate Name : 94 Cet
Star Distance(LY) : 73.0
Stellar Radius(Rsun) : 1.9 (Rsun Measured)
Stellar Mass(Msun) : 1.3 (Msun Measured) 1.3 (Msun Estimated)
Star Age : 8.9 (GY)
Temperature : 5984 (K)
Spectral type : F8 V
Metalicity : 0.2
Absolute Magnitude: 3.3
Apparent Magnitude: 5.1
Right Ascension(RA) 48.1935
Declination (DEC) -1.1958
Hubble Space Telescope Guide Star Catalog (GSC) ID 0
Discovered by
Discovery Paper - Authors "S. Desidera, M. Barbieri"
Discovery Paper - Title Properties of planets in binary systems. The role of binary separation
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+19994&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%2019994%20A%20b/
HD 19994 b
HD 19994 b

  • HD 19994 b is an exoplanet orbiting the star HD 19994, located about 73.0 light-years (22.4 pc) away from Solar System. Its discovery was publicly announced on 2003.
  • The host star HD 19994 has apparent magnitude of 5.1, with absolute magnitude of 3.3.
  • It is 1.3 times more massive and 1.9 times bigger compared with our Sun. The surface temperature is 5984 with its spectral types of F8 V
  • In this planetary system, the extrasolar planet HD 19994 b orbits around the star HD 19994 every 535.7 days with its orbital distance of 1.42 AU ( 212428976.4 km)
  • (Projected orbit of HD 19994 b around its host star HD 19994)


  • The Star HD 19994 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.497 AU ( 223974508.0 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 2.069 AU ( 309591301.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 3.153 AU ( 471748631.1 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 4.640 AU ( 694198776.7 km)
  • Radiation at Planetary Boundary of HD 19994 b : 2904.75 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 19994)



  • Kopparapu Recent Venus for Star HD 19994 distance : 1.533 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 19994 distance : 1.941 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 19994 distance : 1.874 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 19994 distance : 2.055 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 19994 distance : 3.409 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 19994 distance : 3.596 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 19994)



  • Original Kopparapu Recent Venus for Star HD 19994 distance : 1.541 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 19994 distance : 1.993 AU
  • Original Kopparapu Moist Greenhouse for Star HD 19994 distance : 2.039 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 19994 distance : 3.470 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 19994 distance : 3.609 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 19994)



    (Position in Stellar Map of star HD 19994 and its Exoplanet HD 19994 b)



    (Zoomed position in Stellar Map of star HD 19994 and its Exoplanet HD 19994 b (zoom level 3))