Imaginary Picture of LP 81-30 b

Display orbital revolution of LP 81-30 b around the hoststar LP 81-30
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Exoplanet Name : LP 81-30 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 45.0000 (Mjup) 14307.2100 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0000 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0000
Orbital Period(Observed/Estimated) 0.00 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 138.1695
Star Radiation at Atmospheric Boundary: 0.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 0.0 (K)
Blackbody T 0.3(K) 0.0 (K)
Blackbody T 0.7(K) 0.0 (K)
Tidally Locked Blackbody T 0.1(K) 0.0 (K)
Tidally Locked Blackbody T 0.3(K) 0.0 (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 : LP 81-30
Alternate Name :
Star Distance(LY) : 89.2
Stellar Radius(Rsun) : 0.6 (Rsun Estimated)
Stellar Mass(Msun) : 0.0 (Msun Measured) 0.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3700 (K)
Spectral type : M1.0V
UV portion[%]: 0.3
Visible portion[%]: 13.2
IR portion[%]: 86.5
Metalicity : 0.0
Absolute Magnitude: 9.8
Apparent Magnitude: 12.0
Right Ascension(RA) 214.0471
Declination (DEC) 23.3914
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
LP 81-30 b
LP 81-30 b

  • LP 81-30 b is an exoplanet orbiting the star LP 81-30, located about 89.2 light-years (27.3 pc) away from Solar System. Its discovery was publicly announced on 2024.
  • The host star LP 81-30 has apparent magnitude of 12.0, with absolute magnitude of 9.8.
  • (Projected orbit of LP 81-30 b around its host star LP 81-30)


  • The Star LP 81-30 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.170 AU ( 25374327.0 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.234 AU ( 35073951.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.357 AU ( 53444939.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.526 AU ( 78646569.7 km)
  • Radiation at Planetary Boundary of LP 81-30 b : 0.00 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star LP 81-30)



  • Kopparapu Recent Venus for Star LP 81-30 distance : 0.191 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star LP 81-30 distance : 0.242 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star LP 81-30 distance : 0.234 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star LP 81-30 distance : 0.257 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star LP 81-30 distance : 0.466 AU
  • Kopparapu Outer Boundary for Early Mars for Star LP 81-30 distance : 0.492 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star LP 81-30)



  • Original Kopparapu Recent Venus for Star LP 81-30 distance : 0.189 AU
  • Original Kopparapu Runaway Greenhouse for Star LP 81-30 distance : 0.250 AU
  • Original Kopparapu Moist Greenhouse for Star LP 81-30 distance : 0.250 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star LP 81-30 distance : 0.473 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star LP 81-30 distance : 0.492 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star LP 81-30)



    (Position in Stellar Map of star LP 81-30 and its Exoplanet LP 81-30 b)



    (Zoomed position in Stellar Map of star LP 81-30 and its Exoplanet LP 81-30 b (zoom level 3))

    (Synthetic Spectrum of star LP 81-30*)
    *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