Imaginary Picture of Kepler-253 d

Display orbital revolution of Kepler-253 d around the hoststar Kepler-253
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Exoplanet Name : Kepler-253 d
Alternate Name : "2MASS J19272207+4451291 d, K00921.02, KIC 8689373 d, KOI-921 d, KOI-921.02, WISE J192722.06+445129.2 d"
Radius (Rjup / Re): 0.2830 (Rjup) 3.1721 (Rearth)
Mass (Mjup / Me): 0.0243 (Mjup) 7.7192 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1300 (AU) 0.1300 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0496
Orbital Period(Observed/Estimated) 18.12 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 0.7671
Star Radiation at Atmospheric Boundary: 32124.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 597.5 (K)
Blackbody T 0.3(K) 561.1 (K)
Blackbody T 0.7(K) 454.0 (K)
Tidally Locked Blackbody T 0.1(K) 710.6 (K)
Tidally Locked Blackbody T 0.3(K) 667.3 (K)
Size Class: Neptune-size
Mass Class:
Detection Type : Primary Transit
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : Kepler-253
Alternate Name : "2MASS J19272207+4451291, KIC 8689373, KOI-921, WISE J192722.06+445129.2"
Star Distance(LY) : 2736.0
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.0 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5081 (K)
Spectral type : K0
UV portion[%]: 5.1
Visible portion[%]: 40.3
IR portion[%]: 54.7
Metalicity : 0.1
Absolute Magnitude: 4.4
Apparent Magnitude: 14.1
Right Ascension(RA) 291.8420
Declination (DEC) 44.8581
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-253+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-253%20d/
Kepler-253 d
Kepler-253 d

  • Kepler-253 d is an exoplanet orbiting the star Kepler-253, located about 2736.0 light-years (838.9 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-253 has apparent magnitude of 14.1, with absolute magnitude of 4.4.
  • In this planetary system, the extrasolar planet Kepler-253 d orbits around the star Kepler-253 every 18.1 days with its orbital distance of 0.13 AU ( 19447723.2 km)
  • (Projected orbit of Kepler-253 d around its host star Kepler-253)


  • The Star Kepler-253 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.456 AU ( 68188967.0 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.630 AU ( 94254972.2 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.960 AU ( 143623719.1 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.413 AU ( 211348594.4 km)
  • Radiation at Planetary Boundary of Kepler-253 d : 32124.04 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-253)



  • Kopparapu Recent Venus for Star Kepler-253 distance : 0.491 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-253 distance : 0.622 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-253 distance : 0.601 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-253 distance : 0.659 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-253 distance : 1.124 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-253 distance : 1.185 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-253)



  • Original Kopparapu Recent Venus for Star Kepler-253 distance : 0.486 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-253 distance : 0.641 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-253 distance : 0.644 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-253 distance : 1.142 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-253 distance : 1.188 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-253)



    (Position in Stellar Map of star Kepler-253 and its Exoplanet Kepler-253 d)



    (Zoomed position in Stellar Map of star Kepler-253 and its Exoplanet Kepler-253 d (zoom level 3))

    (Synthetic Spectrum of star Kepler-253*)
    *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