Imaginary Picture of HD 7449 Ad

Display orbital revolution of HD 7449 Ad around the hoststar HD 7449 A
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Exoplanet Name : HD 7449 Ad
Alternate Name : HIP 5806 c
Status : Confirmed
Radius (Rjup / Re): 0.2216 (Rjup) 2.4843 (Rearth)
Mass (Mjup / Me): 0.0530 (Mjup) 16.8507 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.2741 (AU Est.)
Eccentricity : 0.2100
Orbital Period(Yrs) 0.1400
Orbital Period(Observed/Estimated) 51.15 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 2.7304
Star Radiation at Atmospheric Boundary: 21925.1 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 543.1 (K)
Blackbody T 0.3(K) 510.0 (K)
Blackbody T 0.7(K) 412.7 (K)
Tidally Locked Blackbody T 0.1(K) 645.9 (K)
Tidally Locked Blackbody T 0.3(K) 606.5 (K)
Size Class: sub-Neptune-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection : Radial Velocity
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : HD 7449 A
Alternate Name : HD 7449
Star Distance(LY) : 127.2
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 2.1 (GY)
Temperature : 6024 (K)
Spectral type : F8V
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : -0.1
Absolute Magnitude: 4.5
Apparent Magnitude: 7.5
Right Ascension(RA) 18.6208
Declination (DEC) -5.0475
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 7449 Ad
HD 7449 Ad

  • HD 7449 Ad is an exoplanet orbiting the star HD 7449 A, located about 127.2 light-years (39.0 pc) away from Solar System. Its discovery was publicly announced on 2022.
  • The host star HD 7449 A has apparent magnitude of 7.5, with absolute magnitude of 4.5.
  • It is 1.1 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 6024 with its spectral types of F8V
  • In this planetary system, the extrasolar planet HD 7449 Ad orbits around the star HD 7449 A every 51.2 days with its orbital distance of 0.27 AU ( 41006064.9 km)
  • (Projected orbit of HD 7449 Ad around its host star HD 7449 A)


  • The Star HD 7449 A 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.794 AU ( 118781666.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.098 AU ( 164187303.9 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.672 AU ( 250185116.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.461 AU ( 368158358.9 km)
  • Radiation at Planetary Boundary of HD 7449 Ad : 21925.12 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 7449 A)



  • Kopparapu Recent Venus for Star HD 7449 A distance : 0.811 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 7449 A distance : 1.027 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 7449 A distance : 0.992 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 7449 A distance : 1.087 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 7449 A distance : 1.802 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 7449 A distance : 1.901 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 7449 A)



  • Original Kopparapu Recent Venus for Star HD 7449 A distance : 0.816 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 7449 A distance : 1.054 AU
  • Original Kopparapu Moist Greenhouse for Star HD 7449 A distance : 1.080 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 7449 A distance : 1.834 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 7449 A distance : 1.907 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 7449 A)



    (Position in Stellar Map of star HD 7449 A and its Exoplanet HD 7449 Ad)



    (Zoomed position in Stellar Map of star HD 7449 A and its Exoplanet HD 7449 Ad (zoom level 3))

    (Synthetic Spectrum of star HD 7449 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