Imaginary Picture of LHS 2397a B
/
Exoplanet Name : LHS 2397a B
Alternate Name : 2MASS J11214924-1313084 B
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 64.0000 (Mjup) 20348.0320 (Mearth)
Semi Major Axis / Orbital Distance Calculated 3.0900 (AU) 3.0900 (AU Est.)
Eccentricity : 0.3500
Orbital Period(Yrs) 14.2200
Orbital Period(Observed/Estimated) 5194.00 (Days Obs.) 6849.31 (Days Est.)
Star Radiation at Atmospheric Boundary: 0.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 20.0 (K)
Blackbody T 0.3(K) 18.8 (K)
Blackbody T 0.7(K) 15.2 (K)
Tidally Locked Blackbody T 0.1(K) 23.7 (K)
Tidally Locked Blackbody T 0.3(K) 22.3 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Imaging
Mass Detection : Spectrum
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : LHS 2397a A
Alternate Name : 2MASS J11214924-1313084
Star Distance(LY) : 46.9
Stellar Radius(Rsun) : 0.1 (Rsun Estimated)
Stellar Mass(Msun) : 0.1 (Msun Measured) 0.1 (Msun Estimated)
Star Age : 1.5 (GY)
Temperature : 2580 (K)
Spectral type : M8V
Metalicity : 0.0
Absolute Magnitude: 18.8
Apparent Magnitude: 19.6
Right Ascension(RA) 170.4549
Declination (DEC) -13.2191
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=LHS+2397a+&submit=SIMBAD+search
Open Exoplanet Database Link
LHS 2397a B
LHS 2397a B

  • LHS 2397a B is an exoplanet orbiting the star LHS 2397a A, located about 46.9 light-years (14.4 pc) away from Solar System. Its discovery was publicly announced on 2009.
  • The host star LHS 2397a A has apparent magnitude of 19.6, with absolute magnitude of 18.8.
  • It is 0.1 times more massive and 0.1 times bigger compared with our Sun. The surface temperature is 2580 with its spectral types of M8V
  • In this planetary system, the extrasolar planet LHS 2397a B orbits around the star LHS 2397a A every 5194.0 days with its orbital distance of 3.09 AU ( 462257420.5 km)
  • (Projected orbit of LHS 2397a B around its host star LHS 2397a A)


  • The Star LHS 2397a A 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.012 AU ( 1809920.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.017 AU ( 2501783.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.025 AU ( 3812163.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.037 AU ( 5609765.9 km)
  • Radiation at Planetary Boundary of LHS 2397a B : 0.04 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star LHS 2397a A)



  • Kopparapu Recent Venus for Star LHS 2397a A distance : 0.014 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star LHS 2397a A distance : 0.017 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star LHS 2397a A distance : 0.017 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star LHS 2397a A distance : 0.019 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star LHS 2397a A distance : 0.035 AU
  • Kopparapu Outer Boundary for Early Mars for Star LHS 2397a A distance : 0.037 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star LHS 2397a A)



  • Original Kopparapu Recent Venus for Star LHS 2397a A distance : 0.014 AU
  • Original Kopparapu Runaway Greenhouse for Star LHS 2397a A distance : 0.018 AU
  • Original Kopparapu Moist Greenhouse for Star LHS 2397a A distance : 0.018 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star LHS 2397a A distance : 0.036 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star LHS 2397a A distance : 0.038 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star LHS 2397a A)



    (Position in Stellar Map of star LHS 2397a A and its Exoplanet LHS 2397a B)



    (Zoomed position in Stellar Map of star LHS 2397a A and its Exoplanet LHS 2397a B (zoom level 3))