Imaginary Picture of HD 46375 A b

Display orbital revolution of HD 46375 A b around the hoststar HD 46375 A
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Exoplanet Name : HD 46375 A b
Alternate Name : HD 46375 b
Status : Confirmed
Radius (Rjup / Re): 1.0200 (Rjup) 11.4332 (Rearth)
Mass (Mjup / Me): 0.2300 (Mjup) 73.1257 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0410 (AU) 0.0410 (AU Est.)
Eccentricity : 0.0524
Orbital Period(Yrs) 0.0083
Orbital Period(Observed/Estimated) 3.02 (Days Obs.) 3.18 (Days Est.)
Surface Gravity (G Earth) 0.5594
Star Radiation at Atmospheric Boundary: 532986.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1205.9 (K)
Blackbody T 0.3(K) 1132.5 (K)
Blackbody T 0.7(K) 916.3 (K)
Tidally Locked Blackbody T 0.1(K) 1434.1 (K)
Tidally Locked Blackbody T 0.3(K) 1346.8 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection :
Radius Detection : Theoretical
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : HD 46375 A
Alternate Name : HD 46375
Star Distance(LY) : 113.6
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 5.0 (GY)
Temperature : 5199 (K)
Spectral type : K1 IV
UV portion[%]: 5.0
Visible portion[%]: 40.1
IR portion[%]: 54.9
Metalicity : 0.2
Absolute Magnitude: 5.2
Apparent Magnitude: 7.9
Right Ascension(RA) 98.3026
Declination (DEC) 5.4628
Hubble Space Telescope Guide Star Catalog (GSC) ID 00154-00891
Discovered by
Discovery Paper - Authors "Eggenberger,.; Udry,.; Chauvin,.; Beuzit,.-L.; Lagrange,.-M.; S_gransan,.; Mayor,."
Discovery Paper - Title The impact of stellar duplicity on planet occurrence and properties. I. Observational results of a VLT/NACO search for stellar companions to 130 nearby stars with and without planets
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+46375+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%2046375%20A%20b/
HD 46375 A b
HD 46375 A b

  • HD 46375 A b is an exoplanet orbiting the star HD 46375 A, located about 113.6 light-years (34.8 pc) away from Solar System. Its discovery was publicly announced on 2000.
  • The host star HD 46375 A has apparent magnitude of 7.9, with absolute magnitude of 5.2.
  • It is 0.9 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 5199 with its spectral types of K1 IV
  • In this planetary system, the extrasolar planet HD 46375 A b orbits around the star HD 46375 A every 3.0 days with its orbital distance of 0.04 AU ( 6133512.7 km)
  • (Projected orbit of HD 46375 A b around its host star HD 46375 A)


  • The Star HD 46375 A 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.586 AU ( 87598717.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.809 AU ( 121084319.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.233 AU ( 184505707.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.815 AU ( 271508231.0 km)
  • Radiation at Planetary Boundary of HD 46375 A b : 532986.69 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 46375 A)



  • Kopparapu Recent Venus for Star HD 46375 A distance : 0.627 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 46375 A distance : 0.794 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 46375 A distance : 0.767 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 46375 A distance : 0.841 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 46375 A distance : 1.428 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 46375 A distance : 1.507 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 46375 A)



  • Original Kopparapu Recent Venus for Star HD 46375 A distance : 0.622 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 46375 A distance : 0.818 AU
  • Original Kopparapu Moist Greenhouse for Star HD 46375 A distance : 0.823 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 46375 A distance : 1.453 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 46375 A distance : 1.511 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 46375 A)



    (Position in Stellar Map of star HD 46375 A and its Exoplanet HD 46375 A b)



    (Zoomed position in Stellar Map of star HD 46375 A and its Exoplanet HD 46375 A b (zoom level 3))

    (Synthetic Spectrum of star HD 46375 A*)
    *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