Imaginary Picture of HD 99283 b

Display orbital revolution of HD 99283 b around the hoststar HD 99283
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Exoplanet Name : HD 99283 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 0.9700 (Mjup) 308.3999 (Mearth)
Semi Major Axis / Orbital Distance Calculated 1.0800 (AU) 1.0800 (AU Est.)
Eccentricity : 0.2000
Orbital Period(Yrs) 0.8498
Orbital Period(Observed/Estimated) 310.40 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 2.9783
Star Radiation at Atmospheric Boundary: 445.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 205.0 (K)
Blackbody T 0.3(K) 192.5 (K)
Blackbody T 0.7(K) 155.8 (K)
Tidally Locked Blackbody T 0.1(K) 243.8 (K)
Tidally Locked Blackbody T 0.3(K) 229.0 (K)
Size Class: Jupiter-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 99283
Alternate Name :
Star Distance(LY) : 0.0
Stellar Radius(Rsun) : 0.7 (Rsun Estimated)
Stellar Mass(Msun) : 0.0 (Msun Measured) 1.7 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5240 (K)
Spectral type : K0 III
UV portion[%]: 5.3
Visible portion[%]: 40.7
IR portion[%]: 54.0
Metalicity : 0.0
Absolute Magnitude: 25.0
Apparent Magnitude: 22.0
Right Ascension(RA) 171.4875
Declination (DEC) 55.8506
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK https://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+99283&submit=SIMBAD+search
Open Exoplanet Database Link
HD 99283 b
HD 99283 b

  • HD 99283 b is an exoplanet orbiting the star HD 99283. Its discovery was publicly announced on 2021.
  • The host star HD 99283 has apparent magnitude of 22.0, with absolute magnitude of 25.0.
  • In this planetary system, the extrasolar planet HD 99283 b orbits around the star HD 99283 every 310.4 days with its orbital distance of 1.08 AU ( 161565700.4 km)
  • (Projected orbit of HD 99283 b around its host star HD 99283)


  • The Star HD 99283 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.446 AU ( 66696798.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.616 AU ( 92192405.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.939 AU ( 140480823.1 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.382 AU ( 206723685.3 km)
  • Radiation at Planetary Boundary of HD 99283 b : 445.30 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 99283)



  • Kopparapu Recent Venus for Star HD 99283 distance : 0.476 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 99283 distance : 0.603 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 99283 distance : 0.583 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 99283 distance : 0.639 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 99283 distance : 1.084 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 99283 distance : 1.143 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 99283)



  • Original Kopparapu Recent Venus for Star HD 99283 distance : 0.473 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 99283 distance : 0.621 AU
  • Original Kopparapu Moist Greenhouse for Star HD 99283 distance : 0.626 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 99283 distance : 1.102 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 99283 distance : 1.146 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 99283)



    (Position in Stellar Map of star HD 99283 and its Exoplanet HD 99283 b)



    (Zoomed position in Stellar Map of star HD 99283 and its Exoplanet HD 99283 b (zoom level 3))

    (Synthetic Spectrum of star HD 99283*)
    *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