Imaginary Picture of L2 Pup b
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Exoplanet Name : L2 Pup b
Alternate Name :
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 12.0000 (Mjup) 3815.2560 (Mearth)
Semi Major Axis / Orbital Distance Calculated 2.0000 (AU) 2.0000 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0000
Orbital Period(Observed/Estimated) 0.00 (Days Obs.) 1272.60 (Days Est.)
Star Radiation at Atmospheric Boundary: 15.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 88.7 (K)
Blackbody T 0.3(K) 83.3 (K)
Blackbody T 0.7(K) 67.4 (K)
Tidally Locked Blackbody T 0.1(K) 105.4 (K)
Tidally Locked Blackbody T 0.3(K) 99.0 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Imaging
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : L2 Pup
Alternate Name :
Star Distance(LY) : 208.7
Stellar Radius(Rsun) : 0.6 (Rsun Estimated)
Stellar Mass(Msun) : 0.7 (Msun Measured) 0.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3500 (K)
Spectral type : M5
Metalicity : 0.0
Absolute Magnitude: 1.1
Apparent Magnitude: 5.1
Right Ascension(RA) 108.3847
Declination (DEC) -44.6397
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 http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=L2+Pup&submit=SIMBAD+search
Open Exoplanet Database Link
L2 Pup b
L2 Pup b

  • L2 Pup b is an exoplanet orbiting the star L2 Pup, located about 208.7 light-years (64.0 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star L2 Pup has apparent magnitude of 5.1, with absolute magnitude of 1.1.
  • It is 0.7 times more massive and 0.6 times bigger compared with our Sun. The surface temperature is 3500 with its spectral types of M5
  • (Projected orbit of L2 Pup b around its host star L2 Pup)


  • The Star L2 Pup 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.154 AU ( 23100241.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.213 AU ( 31930570.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.325 AU ( 48655123.0 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.479 AU ( 71598144.9 km)
  • Radiation at Planetary Boundary of L2 Pup b : 15.58 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star L2 Pup)



  • Kopparapu Recent Venus for Star L2 Pup distance : 0.174 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star L2 Pup distance : 0.221 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star L2 Pup distance : 0.213 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star L2 Pup distance : 0.235 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star L2 Pup distance : 0.430 AU
  • Kopparapu Outer Boundary for Early Mars for Star L2 Pup distance : 0.453 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star L2 Pup)



  • Original Kopparapu Recent Venus for Star L2 Pup distance : 0.173 AU
  • Original Kopparapu Runaway Greenhouse for Star L2 Pup distance : 0.229 AU
  • Original Kopparapu Moist Greenhouse for Star L2 Pup distance : 0.229 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star L2 Pup distance : 0.436 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star L2 Pup distance : 0.454 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star L2 Pup)



    (Position in Stellar Map of star L2 Pup and its Exoplanet L2 Pup b)



    (Zoomed position in Stellar Map of star L2 Pup and its Exoplanet L2 Pup b (zoom level 3))