Imaginary Picture of Kepler-1670 b

Display orbital revolution of Kepler-1670 b around the hoststar Kepler-1670
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Exoplanet Name : Kepler-1670 b
Alternate Name : "2MASS J19211836+4307186 b, K01705.01, KIC 7522911 b, KOI-1705 b, KOI-1705.01, WISE J192118.36+430718.1 b"
Status : Confirmed
Radius (Rjup / Re): 0.2990 (Rjup) 3.3515 (Rearth)
Mass (Mjup / Me): 0.0256 (Mjup) 8.1243 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1510 (AU) 0.1510 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0561
Orbital Period(Observed/Estimated) 20.50 (Days Obs.) 20.57 (Days Est.)
Surface Gravity (G Earth) 0.7233
Star Radiation at Atmospheric Boundary: 146537.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 873.2 (K)
Blackbody T 0.3(K) 820.1 (K)
Blackbody T 0.7(K) 663.5 (K)
Tidally Locked Blackbody T 0.1(K) 1038.5 (K)
Tidally Locked Blackbody T 0.3(K) 975.2 (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-1670
Alternate Name : "7522911, 2MASS J19211836+4307186, KIC 7522911, KOI-1705, WISE J192118.36+430718.1"
Star Distance(LY) : 7170.2
Stellar Radius(Rsun) : 1.6 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5766 (K)
Spectral type : G3
UV portion[%]: 7.8
Visible portion[%]: 44.7
IR portion[%]: 47.5
Metalicity : -0.1
Absolute Magnitude: 3.5
Apparent Magnitude: 15.3
Right Ascension(RA) 290.3265
Declination (DEC) 43.1218
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-1670+&submit=SIMBAD+search
Open Exoplanet Database Link
Kepler-1670 b
Kepler-1670 b

  • Kepler-1670 b is an exoplanet orbiting the star Kepler-1670, located about 7170.2 light-years (2198.4 pc) away from Solar System. Its discovery was publicly announced on 2020.
  • The host star Kepler-1670 has apparent magnitude of 15.3, with absolute magnitude of 3.5.
  • It is 1.1 times more massive and 1.6 times bigger compared with our Sun. The surface temperature is 5766 with its spectral types of G3
  • In this planetary system, the extrasolar planet Kepler-1670 b orbits around the star Kepler-1670 every 20.5 days with its orbital distance of 0.15 AU ( 22589278.5 km)
  • (Projected orbit of Kepler-1670 b around its host star Kepler-1670)


  • The Star Kepler-1670 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.131 AU ( 169163647.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.563 AU ( 233828368.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.382 AU ( 356302687.8 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.505 AU ( 524315013.7 km)
  • Radiation at Planetary Boundary of Kepler-1670 b : 146537.50 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1670)



  • Kopparapu Recent Venus for Star Kepler-1670 distance : 1.173 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1670 distance : 1.485 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1670 distance : 1.434 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1670 distance : 1.573 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1670 distance : 2.624 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1670 distance : 2.767 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1670)



  • Original Kopparapu Recent Venus for Star Kepler-1670 distance : 1.174 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1670 distance : 1.526 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1670 distance : 1.554 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1670 distance : 2.670 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1670 distance : 2.776 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1670)



    (Position in Stellar Map of star Kepler-1670 and its Exoplanet Kepler-1670 b)



    (Zoomed position in Stellar Map of star Kepler-1670 and its Exoplanet Kepler-1670 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1670*)
    *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