Imaginary Picture of Kepler-1673 b

Display orbital revolution of Kepler-1673 b around the hoststar Kepler-1673
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Exoplanet Name : Kepler-1673 b
Alternate Name : "2MASS J19024010+4843104 b, K01863.01, KIC 11126381 b, KOI-1863 b, KOI-1863.01, WISE J190240.11+484310.5 b"
Status : Confirmed
Radius (Rjup / Re): 0.2620 (Rjup) 2.9368 (Rearth)
Mass (Mjup / Me): 0.0226 (Mjup) 7.1851 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.2114 (AU) 0.2114 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0925
Orbital Period(Observed/Estimated) 33.79 (Days Obs.) 33.85 (Days Est.)
Surface Gravity (G Earth) 0.8331
Star Radiation at Atmospheric Boundary: 44424.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 648.0 (K)
Blackbody T 0.3(K) 608.5 (K)
Blackbody T 0.7(K) 492.3 (K)
Tidally Locked Blackbody T 0.1(K) 770.6 (K)
Tidally Locked Blackbody T 0.3(K) 723.6 (K)
Size Class: sub-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-1673
Alternate Name : "11126381, 2MASS J19024010+4843104, KIC 11126381, KOI-1863, WISE J190240.11+484310.5"
Star Distance(LY) : 2422.6
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 6220 (K)
Spectral type : F8
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : -0.1
Absolute Magnitude: 4.1
Apparent Magnitude: 13.5
Right Ascension(RA) 285.6671
Declination (DEC) 48.7196
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-1673+&submit=SIMBAD+search
Open Exoplanet Database Link
Kepler-1673 b
Kepler-1673 b

  • Kepler-1673 b is an exoplanet orbiting the star Kepler-1673, located about 2422.6 light-years (742.8 pc) away from Solar System. Its discovery was publicly announced on 2020.
  • The host star Kepler-1673 has apparent magnitude of 13.5, with absolute magnitude of 4.1.
  • It is 1.1 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 6220 with its spectral types of F8
  • In this planetary system, the extrasolar planet Kepler-1673 b orbits around the star Kepler-1673 every 33.8 days with its orbital distance of 0.21 AU ( 31624989.9 km)
  • (Projected orbit of Kepler-1673 b around its host star Kepler-1673)


  • The Star Kepler-1673 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.872 AU ( 130398387.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.205 AU ( 180244648.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.836 AU ( 274652956.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.702 AU ( 404163857.5 km)
  • Radiation at Planetary Boundary of Kepler-1673 b : 44424.55 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1673)



  • Kopparapu Recent Venus for Star Kepler-1673 distance : 0.879 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1673 distance : 1.114 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1673 distance : 1.076 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1673 distance : 1.179 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1673 distance : 1.947 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1673 distance : 2.053 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1673)



  • Original Kopparapu Recent Venus for Star Kepler-1673 distance : 0.889 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1673 distance : 1.143 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1673 distance : 1.176 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1673 distance : 1.982 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1673 distance : 2.061 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1673)



    (Position in Stellar Map of star Kepler-1673 and its Exoplanet Kepler-1673 b)



    (Zoomed position in Stellar Map of star Kepler-1673 and its Exoplanet Kepler-1673 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1673*)
    *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