Imaginary Picture of LP 358-499 e

Display orbital revolution of LP 358-499 e around the hoststar K2-133
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Exoplanet Name : LP 358-499 e
Alternate Name : "K2-133 e, 2MASS J04403562+2500361 e, EPIC 247887989 e, WISE J044035.78+250035.5 e"
Status : Confirmed
Radius (Rjup / Re): 0.1540 (Rjup) 1.7262 (Rearth)
Mass (Mjup / Me): 0.0138 (Mjup) 4.3833 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1346 (AU) 0.1346 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0728
Orbital Period(Observed/Estimated) 26.58 (Days Obs.) 26.59 (Days Est.)
Surface Gravity (G Earth) 1.4711
Star Radiation at Atmospheric Boundary: 2556.1 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 317.3 (K)
Blackbody T 0.3(K) 298.0 (K)
Blackbody T 0.7(K) 241.1 (K)
Tidally Locked Blackbody T 0.1(K) 377.4 (K)
Tidally Locked Blackbody T 0.3(K) 354.4 (K)
Size Class: super-Earth-size
Mass Class:
Detection Type : Primary Transit
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Habitable
Habitability by Kopparapu: Not habitable
Star Name : K2-133
Alternate Name : "K2-133, EPIC 247887989, 2MASS J04403562+2500361, EPIC 247887989, LP 358-499, WISE J044035.78+250035.5"
Star Distance(LY) : 245.3
Stellar Radius(Rsun) : 0.5 (Rsun Measured)
Stellar Mass(Msun) : 0.5 (Msun Measured) 0.5 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3655 (K)
Spectral type : M1.5 V
UV portion[%]: 0.4
Visible portion[%]: 17.6
IR portion[%]: 82.1
Metalicity : 0.0
Absolute Magnitude: 6.7
Apparent Magnitude: 11.1
Right Ascension(RA) 70.1486
Declination (DEC) 25.0100
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK https://simbad.u-strasbg.fr/simbad/sim-basic?Ident=K2-133&submit=SIMBAD+search
Open Exoplanet Database Link
LP 358-499 e
LP 358-499 e

  • LP 358-499 e is an exoplanet orbiting the star K2-133, located about 245.3 light-years (75.2 pc) away from Solar System. Its discovery was publicly announced on 2019.
  • The host star K2-133 has apparent magnitude of 11.1, with absolute magnitude of 6.7.
  • It is 0.5 times more massive and 0.5 times bigger compared with our Sun. The surface temperature is 3655 with its spectral types of M1.5 V
  • In this planetary system, the extrasolar planet LP 358-499 e orbits around the star K2-133 every 26.6 days with its orbital distance of 0.13 AU ( 20135873.4 km)
  • (Projected orbit of LP 358-499 e around its host star K2-133)


  • The Star K2-133 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.133 AU ( 19915476.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.184 AU ( 27528393.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.280 AU ( 41947179.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.413 AU ( 61727112.2 km)
  • Radiation at Planetary Boundary of LP 358-499 e : 2556.11 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star K2-133)



  • Kopparapu Recent Venus for Star K2-133 distance : 0.150 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star K2-133 distance : 0.190 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star K2-133 distance : 0.183 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star K2-133 distance : 0.202 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-133 distance : 0.367 AU
  • Kopparapu Outer Boundary for Early Mars for Star K2-133 distance : 0.387 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star K2-133)



  • Original Kopparapu Recent Venus for Star K2-133 distance : 0.149 AU
  • Original Kopparapu Runaway Greenhouse for Star K2-133 distance : 0.197 AU
  • Original Kopparapu Moist Greenhouse for Star K2-133 distance : 0.197 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-133 distance : 0.373 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star K2-133 distance : 0.387 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star K2-133)



    (Position in Stellar Map of star K2-133 and its Exoplanet LP 358-499 e)



    (Zoomed position in Stellar Map of star K2-133 and its Exoplanet LP 358-499 e (zoom level 3))

    (Synthetic Spectrum of star K2-133*)
    *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