Imaginary Picture of LSPM J2116+0234 b

Display orbital revolution of LSPM J2116+0234 b around the hoststar LSPM J2116+0234
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Exoplanet Name : LSPM J2116+0234 b
Alternate Name : UCAC4 463-128595 b
Status : Confirmed
Radius (Rjup / Re): 0.2101 (Rjup) 2.3548 (Rearth)
Mass (Mjup / Me): 0.0420 (Mjup) 13.3534 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0876 (AU) 0.0876 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0395
Orbital Period(Observed/Estimated) 14.45 (Days Obs.) 14.44 (Days Est.)
Surface Gravity (G Earth) 2.4081
Star Radiation at Atmospheric Boundary: 4328.8 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 362.0 (K)
Blackbody T 0.3(K) 340.0 (K)
Blackbody T 0.7(K) 275.1 (K)
Tidally Locked Blackbody T 0.1(K) 430.5 (K)
Tidally Locked Blackbody T 0.3(K) 404.3 (K)
Size Class: sub-Neptune-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 : LSPM J2116+0234
Alternate Name :
Star Distance(LY) : 57.5
Stellar Radius(Rsun) : 0.4 (Rsun Measured)
Stellar Mass(Msun) : 0.4 (Msun Measured) 0.4 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3475 (K)
Spectral type : M3.0V
UV portion[%]: 0.2
Visible portion[%]: 10.4
IR portion[%]: 89.4
Metalicity : -0.1
Absolute Magnitude: 9.8
Apparent Magnitude: 11.0
Right Ascension(RA) 319.1137
Declination (DEC) 2.5808
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=LSPM+J2116%2B0234+&submit=SIMBAD+search
Open Exoplanet Database Link
LSPM J2116+0234 b
LSPM J2116+0234 b

  • LSPM J2116+0234 b is an exoplanet orbiting the star LSPM J2116+0234, located about 57.5 light-years (17.6 pc) away from Solar System. Its discovery was publicly announced on 2019.
  • The host star LSPM J2116+0234 has apparent magnitude of 11.0, with absolute magnitude of 9.8.
  • It is 0.4 times more massive and 0.4 times bigger compared with our Sun. The surface temperature is 3475 with its spectral types of M3.0V
  • In this planetary system, the extrasolar planet LSPM J2116+0234 b orbits around the star LSPM J2116+0234 every 14.4 days with its orbital distance of 0.09 AU ( 13104773.5 km)
  • (Projected orbit of LSPM J2116+0234 b around its host star LSPM J2116+0234)


  • The Star LSPM J2116+0234 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.113 AU ( 16867277.9 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.156 AU ( 23314986.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.237 AU ( 35526879.1 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.349 AU ( 52279358.9 km)
  • Radiation at Planetary Boundary of LSPM J2116+0234 b : 4328.83 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star LSPM J2116+0234)



  • Kopparapu Recent Venus for Star LSPM J2116+0234 distance : 0.127 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star LSPM J2116+0234 distance : 0.161 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star LSPM J2116+0234 distance : 0.156 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star LSPM J2116+0234 distance : 0.171 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star LSPM J2116+0234 distance : 0.314 AU
  • Kopparapu Outer Boundary for Early Mars for Star LSPM J2116+0234 distance : 0.331 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star LSPM J2116+0234)



  • Original Kopparapu Recent Venus for Star LSPM J2116+0234 distance : 0.126 AU
  • Original Kopparapu Runaway Greenhouse for Star LSPM J2116+0234 distance : 0.167 AU
  • Original Kopparapu Moist Greenhouse for Star LSPM J2116+0234 distance : 0.167 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star LSPM J2116+0234 distance : 0.319 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star LSPM J2116+0234 distance : 0.332 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star LSPM J2116+0234)



    (Position in Stellar Map of star LSPM J2116+0234 and its Exoplanet LSPM J2116+0234 b)



    (Zoomed position in Stellar Map of star LSPM J2116+0234 and its Exoplanet LSPM J2116+0234 b (zoom level 3))

    (Synthetic Spectrum of star LSPM J2116+0234*)
    *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