Imaginary Picture of Elias 2-24 b

Display orbital revolution of Elias 2-24 b around the hoststar Elias 2-24
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Exoplanet Name : Elias 2-24 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 2.7000 (Mjup) 858.4326 (Mearth)
Semi Major Axis / Orbital Distance Calculated 57.0000 (AU) 57.0000 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 430.0342
Orbital Period(Observed/Estimated) 157074.30 (Days Obs.) 157181.89 (Days Est.)
Surface Gravity (G Earth) 8.2902
Star Radiation at Atmospheric Boundary: 2.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 56.3 (K)
Blackbody T 0.3(K) 52.8 (K)
Blackbody T 0.7(K) 42.8 (K)
Tidally Locked Blackbody T 0.1(K) 66.9 (K)
Tidally Locked Blackbody T 0.3(K) 62.8 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : "Imaging, Other"
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : Elias 2-24
Alternate Name : "ISO-Oph 40, IRAS 16233-2409"
Star Distance(LY) : 453.4
Stellar Radius(Rsun) : 4.1 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 4483 (K)
Spectral type : K6
UV portion[%]: 1.5
Visible portion[%]: 30.8
IR portion[%]: 67.7
Metalicity : -0.3
Absolute Magnitude: 8.7
Apparent Magnitude: 14.4
Right Ascension(RA) 246.6004
Declination (DEC) -24.2704
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
Elias 2-24 b
Elias 2-24 b

  • Elias 2-24 b is an exoplanet orbiting the star Elias 2-24, located about 453.4 light-years (139.0 pc) away from Solar System. Its discovery was publicly announced on 2017.
  • The host star Elias 2-24 has apparent magnitude of 14.4, with absolute magnitude of 8.7.
  • It is 1.0 times more massive and 4.1 times bigger compared with our Sun. The surface temperature is 4483 with its spectral types of K6
  • In this planetary system, the extrasolar planet Elias 2-24 b orbits around the star Elias 2-24 every 157074.3 days with its orbital distance of 57.00 AU ( 8527078629.9 km)
  • (Projected orbit of Elias 2-24 b around its host star Elias 2-24)


  • The Star Elias 2-24 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.772 AU ( 265087957.8 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 2.449 AU ( 366420833.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 3.732 AU ( 558344261.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 5.492 AU ( 821628040.2 km)
  • Radiation at Planetary Boundary of Elias 2-24 b : 2.53 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Elias 2-24)



  • Kopparapu Recent Venus for Star Elias 2-24 distance : 1.958 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Elias 2-24 distance : 2.479 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Elias 2-24 distance : 2.394 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Elias 2-24 distance : 2.630 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Elias 2-24 distance : 4.596 AU
  • Kopparapu Outer Boundary for Early Mars for Star Elias 2-24 distance : 4.848 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Elias 2-24)



  • Original Kopparapu Recent Venus for Star Elias 2-24 distance : 1.932 AU
  • Original Kopparapu Runaway Greenhouse for Star Elias 2-24 distance : 2.559 AU
  • Original Kopparapu Moist Greenhouse for Star Elias 2-24 distance : 2.557 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Elias 2-24 distance : 4.670 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Elias 2-24 distance : 4.857 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Elias 2-24)



    (Position in Stellar Map of star Elias 2-24 and its Exoplanet Elias 2-24 b)



    (Zoomed position in Stellar Map of star Elias 2-24 and its Exoplanet Elias 2-24 b (zoom level 3))

    (Synthetic Spectrum of star Elias 2-24*)
    *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