Imaginary Picture of PPL 15 b

Display orbital revolution of PPL 15 b around the hoststar PPL 15
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Exoplanet Name : PPL 15 b
Alternate Name :
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 60.0000 (Mjup) 19076.2800 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0200 (AU) 0.0200 (AU Est.)
Eccentricity : 0.4200
Orbital Period(Yrs) 0.0159
Orbital Period(Observed/Estimated) 5.83 (Days Obs.) 3.90 (Days Est.)
Surface Gravity (G Earth) 184.2260
Star Radiation at Atmospheric Boundary: 1387.4 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 272.4 (K)
Blackbody T 0.3(K) 255.8 (K)
Blackbody T 0.7(K) 207.0 (K)
Tidally Locked Blackbody T 0.1(K) 323.9 (K)
Tidally Locked Blackbody T 0.3(K) 304.2 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection : Radial Velocity
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Habitable
Habitability by Kopparapu: Not habitable
Star Name : PPL 15
Alternate Name :
Star Distance(LY) : 463.1
Stellar Radius(Rsun) : 0.1 (Rsun Estimated)
Stellar Mass(Msun) : 0.1 (Msun Measured) 0.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3100 (K)
Spectral type : M6.5
UV portion[%]: 0.1
Visible portion[%]: 6.8
IR portion[%]: 93.1
Metalicity : 0.0
Absolute Magnitude: 14.2
Apparent Magnitude: 20.0
Right Ascension(RA) 57.0208
Declination (DEC) 23.6583
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
PPL 15 b
PPL 15 b

  • PPL 15 b is an exoplanet orbiting the star PPL 15, located about 463.1 light-years (142.0 pc) away from Solar System. Its discovery was publicly announced on 1999.
  • The host star PPL 15 has apparent magnitude of 20.0, with absolute magnitude of 14.2.
  • It is 0.1 times more massive and 0.1 times bigger compared with our Sun. The surface temperature is 3100 with its spectral types of M6.5
  • In this planetary system, the extrasolar planet PPL 15 b orbits around the star PPL 15 every 5.8 days with its orbital distance of 0.02 AU ( 2991957.4 km)
  • (Projected orbit of PPL 15 b around its host star PPL 15)


  • The Star PPL 15 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.015 AU ( 2180115.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.020 AU ( 3013489.6 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.031 AU ( 4591891.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.045 AU ( 6757169.2 km)
  • Radiation at Planetary Boundary of PPL 15 b : 1387.36 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star PPL 15)



  • Kopparapu Recent Venus for Star PPL 15 distance : 0.017 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star PPL 15 distance : 0.021 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star PPL 15 distance : 0.020 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star PPL 15 distance : 0.022 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star PPL 15 distance : 0.042 AU
  • Kopparapu Outer Boundary for Early Mars for Star PPL 15 distance : 0.044 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star PPL 15)



  • Original Kopparapu Recent Venus for Star PPL 15 distance : 0.016 AU
  • Original Kopparapu Runaway Greenhouse for Star PPL 15 distance : 0.022 AU
  • Original Kopparapu Moist Greenhouse for Star PPL 15 distance : 0.022 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star PPL 15 distance : 0.042 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star PPL 15 distance : 0.044 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star PPL 15)



    (Position in Stellar Map of star PPL 15 and its Exoplanet PPL 15 b)



    (Zoomed position in Stellar Map of star PPL 15 and its Exoplanet PPL 15 b (zoom level 3))

    (Synthetic Spectrum of star PPL 15*)
    *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