Imaginary Picture of L 383-38 b

Display orbital revolution of L 383-38 b around the hoststar L 383-38
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Exoplanet Name : L 383-38 b
Alternate Name : GJ 3049 b
Status : Confirmed
Radius (Rjup / Re): 0.1340 (Rjup) 1.5020 (Rearth)
Mass (Mjup / Me): 0.0147 (Mjup) 4.6705 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0480 (AU) 0.0480 (AU Est.)
Eccentricity : 0.0110
Orbital Period(Yrs) 0.0240
Orbital Period(Observed/Estimated) 8.78 (Days Obs.) 8.38 (Days Est.)
Surface Gravity (G Earth) 2.0702
Star Radiation at Atmospheric Boundary: 3830.4 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 351.1 (K)
Blackbody T 0.3(K) 329.7 (K)
Blackbody T 0.7(K) 266.8 (K)
Tidally Locked Blackbody T 0.1(K) 417.6 (K)
Tidally Locked Blackbody T 0.3(K) 392.1 (K)
Size Class: super-Earth-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 : L 383-38
Alternate Name : GJ 3049
Star Distance(LY) : 33.4
Stellar Radius(Rsun) : 0.3 (Rsun Measured)
Stellar Mass(Msun) : 0.2 (Msun Measured) 0.2 (Msun Estimated)
Star Age : 8.1 (GY)
Temperature : 3129 (K)
Spectral type : M7
UV portion[%]: 0.2
Visible portion[%]: 7.0
IR portion[%]: 92.8
Metalicity : 0.0
Absolute Magnitude: 11.5
Apparent Magnitude: 11.5
Right Ascension(RA) 10.8550
Declination (DEC) -41.2950
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
L 383-38 b
L 383-38 b

  • L 383-38 b is an exoplanet orbiting the star L 383-38, located about 33.4 light-years (10.2 pc) away from Solar System. Its discovery was publicly announced on 2022.
  • The host star L 383-38 has apparent magnitude of 11.5, with absolute magnitude of 11.5.
  • It is 0.2 times more massive and 0.3 times bigger compared with our Sun. The surface temperature is 3129 with its spectral types of M7
  • In this planetary system, the extrasolar planet L 383-38 b orbits around the star L 383-38 every 8.8 days with its orbital distance of 0.05 AU ( 7180697.8 km)
  • (Projected orbit of L 383-38 b around its host star L 383-38)


  • The Star L 383-38 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.058 AU ( 8694003.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.080 AU ( 12017384.6 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.122 AU ( 18311834.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.180 AU ( 26946666.9 km)
  • Radiation at Planetary Boundary of L 383-38 b : 3830.41 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star L 383-38)



  • Kopparapu Recent Venus for Star L 383-38 distance : 0.066 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star L 383-38 distance : 0.083 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star L 383-38 distance : 0.081 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star L 383-38 distance : 0.089 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star L 383-38 distance : 0.165 AU
  • Kopparapu Outer Boundary for Early Mars for Star L 383-38 distance : 0.174 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star L 383-38)



  • Original Kopparapu Recent Venus for Star L 383-38 distance : 0.066 AU
  • Original Kopparapu Runaway Greenhouse for Star L 383-38 distance : 0.086 AU
  • Original Kopparapu Moist Greenhouse for Star L 383-38 distance : 0.087 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star L 383-38 distance : 0.168 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star L 383-38 distance : 0.175 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star L 383-38)



    (Position in Stellar Map of star L 383-38 and its Exoplanet L 383-38 b)



    (Zoomed position in Stellar Map of star L 383-38 and its Exoplanet L 383-38 b (zoom level 3))

    (Synthetic Spectrum of star L 383-38*)
    *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