Imaginary Picture of YBP401 b

Display orbital revolution of YBP401 b around the hoststar YBP401
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Exoplanet Name : YBP401 b
Alternate Name :
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 0.4600 (Mjup) 146.2515 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0523 (AU Est.)
Eccentricity : 0.1500
Orbital Period(Yrs) 0.0112
Orbital Period(Observed/Estimated) 4.09 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.4124
Star Radiation at Atmospheric Boundary: 777092.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1325.1 (K)
Blackbody T 0.3(K) 1244.4 (K)
Blackbody T 0.7(K) 1006.9 (K)
Tidally Locked Blackbody T 0.1(K) 1575.9 (K)
Tidally Locked Blackbody T 0.3(K) 1479.9 (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 : YBP401
Alternate Name :
Star Distance(LY) : 2749.5
Stellar Radius(Rsun) : 1.1 (Rsun Estimated)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 4.0 (GY)
Temperature : 6165 (K)
Spectral type : F9V
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : 0.0
Absolute Magnitude: 4.1
Apparent Magnitude: 13.7
Right Ascension(RA) 132.8292
Declination (DEC) 11.6711
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK
Open Exoplanet Database Link
YBP401 b
YBP401 b

  • YBP401 b is an exoplanet orbiting the star YBP401, located about 2749.5 light-years (843.0 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star YBP401 has apparent magnitude of 13.7, with absolute magnitude of 4.1.
  • It is 1.1 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 6165 with its spectral types of F9V
  • In this planetary system, the extrasolar planet YBP401 b orbits around the star YBP401 every 4.1 days with its orbital distance of 0.05 AU ( 7818137.5 km)
  • (Projected orbit of YBP401 b around its host star YBP401)


  • The Star YBP401 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.901 AU ( 134824858.0 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.246 AU ( 186363187.6 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.898 AU ( 283976255.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.793 AU ( 417883500.7 km)
  • Radiation at Planetary Boundary of YBP401 b : 777092.55 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star YBP401)



  • Kopparapu Recent Venus for Star YBP401 distance : 0.912 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star YBP401 distance : 1.155 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star YBP401 distance : 1.116 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star YBP401 distance : 1.223 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star YBP401 distance : 2.022 AU
  • Kopparapu Outer Boundary for Early Mars for Star YBP401 distance : 2.133 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star YBP401)



  • Original Kopparapu Recent Venus for Star YBP401 distance : 0.921 AU
  • Original Kopparapu Runaway Greenhouse for Star YBP401 distance : 1.186 AU
  • Original Kopparapu Moist Greenhouse for Star YBP401 distance : 1.219 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star YBP401 distance : 2.058 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star YBP401 distance : 2.140 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star YBP401)



    (Position in Stellar Map of star YBP401 and its Exoplanet YBP401 b)



    (Zoomed position in Stellar Map of star YBP401 and its Exoplanet YBP401 b (zoom level 3))

    (Synthetic Spectrum of star YBP401*)
    *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