Imaginary Picture of L 98-59 e

Display orbital revolution of L 98-59 e around the hoststar L 98-59
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Exoplanet Name : L 98-59 e
Alternate Name : TOI-175 e
Status : Confirmed
Radius (Rjup / Re): 0.1202 (Rjup) 1.3474 (Rearth)
Mass (Mjup / Me): 0.0096 (Mjup) 3.0617 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0717 (AU) 0.0717 (AU Est.)
Eccentricity : 0.1280
Orbital Period(Yrs) 0.0350
Orbital Period(Observed/Estimated) 12.80 (Days Obs.) 12.40 (Days Est.)
Surface Gravity (G Earth) 1.6864
Star Radiation at Atmospheric Boundary: 3031.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 331.2 (K)
Blackbody T 0.3(K) 311.0 (K)
Blackbody T 0.7(K) 251.6 (K)
Tidally Locked Blackbody T 0.1(K) 393.8 (K)
Tidally Locked Blackbody T 0.3(K) 369.8 (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 98-59
Alternate Name : TOI-175
Star Distance(LY) : 34.6
Stellar Radius(Rsun) : 0.3 (Rsun Measured)
Stellar Mass(Msun) : 0.3 (Msun Measured) 0.3 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3500 (K)
Spectral type : M4
UV portion[%]: 0.3
Visible portion[%]: 14.5
IR portion[%]: 85.2
Metalicity : -0.5
Absolute Magnitude: 11.6
Apparent Magnitude: 11.7
Right Ascension(RA) 122.5333
Declination (DEC) -68.3131
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=L+98-59&submit=SIMBAD+search
Open Exoplanet Database Link
L 98-59 e
L 98-59 e

  • L 98-59 e is an exoplanet orbiting the star L 98-59, located about 34.6 light-years (10.6 pc) away from Solar System. Its discovery was publicly announced on 2021.
  • The host star L 98-59 has apparent magnitude of 11.7, with absolute magnitude of 11.6.
  • It is 0.3 times more massive and 0.3 times bigger compared with our Sun. The surface temperature is 3500 with its spectral types of M4
  • In this planetary system, the extrasolar planet L 98-59 e orbits around the star L 98-59 every 12.8 days with its orbital distance of 0.07 AU ( 10726167.3 km)
  • (Projected orbit of L 98-59 e around its host star L 98-59)


  • The Star L 98-59 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.077 AU ( 11552798.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.107 AU ( 15968986.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.163 AU ( 24333201.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.239 AU ( 35807371.6 km)
  • Radiation at Planetary Boundary of L 98-59 e : 3031.27 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star L 98-59)



  • Kopparapu Recent Venus for Star L 98-59 distance : 0.087 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star L 98-59 distance : 0.110 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star L 98-59 distance : 0.107 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star L 98-59 distance : 0.117 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star L 98-59 distance : 0.215 AU
  • Kopparapu Outer Boundary for Early Mars for Star L 98-59 distance : 0.227 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star L 98-59)



  • Original Kopparapu Recent Venus for Star L 98-59 distance : 0.087 AU
  • Original Kopparapu Runaway Greenhouse for Star L 98-59 distance : 0.114 AU
  • Original Kopparapu Moist Greenhouse for Star L 98-59 distance : 0.114 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star L 98-59 distance : 0.218 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star L 98-59 distance : 0.227 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star L 98-59)



    (Position in Stellar Map of star L 98-59 and its Exoplanet L 98-59 e)



    (Zoomed position in Stellar Map of star L 98-59 and its Exoplanet L 98-59 e (zoom level 3))

    (Synthetic Spectrum of star L 98-59*)
    *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