Imaginary Picture of Kepler-1649 c

Display orbital revolution of Kepler-1649 c around the hoststar Kepler-1649
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Exoplanet Name : Kepler-1649 c
Alternate Name : "2MASS J19300092+4149496 c, K03138.02, KIC 6444896 c, KOI-31
Radius (Rjup / Re): 0.0950 (Rjup) 1.0649 (Rearth)
Mass (Mjup / Me): 0.0039 (Mjup) 1.2258 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0830 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0535
Orbital Period(Observed/Estimated) 19.54 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.0811
Star Radiation at Atmospheric Boundary: 1037.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 253.3 (K)
Blackbody T 0.3(K) 237.9 (K)
Blackbody T 0.7(K) 192.5 (K)
Tidally Locked Blackbody T 0.1(K) 301.2 (K)
Tidally Locked Blackbody T 0.3(K) 282.9 (K)
Size Class: Earth-size
Mass Class:
Detection Type : Primary Transit
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Habitable
Habitability by Kopparapu: Habitable
Star Name : Kepler-1649
Alternate Name : "KIC 6444896, 2MASS J19300092+4149496, KOI-3138, LSPM J1930+4149Dǵq= \@t>
Star Distance(LY) : 301.5
Stellar Radius(Rsun) : 0.2 (Rsun Measured)
Stellar Mass(Msun) : 0.2 (Msun Measured) 0.2 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3240 (K)
Spectral type : M5V
UV portion[%]: 0.2
Visible portion[%]: 8.9
IR portion[%]: 91.0
Metalicity : -0.1
Absolute Magnitude: 11.9
Apparent Magnitude: 16.7
Right Ascension(RA) 292.5038
Declination (DEC) 41.8304
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-1649+&submit=SIMBAD+search
Open Exoplanet Database Link
Kepler-1649 c
Kepler-1649 c

  • Kepler-1649 c is an exoplanet orbiting the star Kepler-1649, located about 301.5 light-years (92.4 pc) away from Solar System. Its discovery was publicly announced on 2020.
  • The host star Kepler-1649 has apparent magnitude of 16.7, with absolute magnitude of 11.9.
  • It is 0.2 times more massive and 0.2 times bigger compared with our Sun. The surface temperature is 3240 with its spectral types of M5V
  • In this planetary system, the extrasolar planet Kepler-1649 c orbits around the star Kepler-1649 every 19.5 days with its orbital distance of 0.08 AU ( 12419045.2 km)
  • (Projected orbit of Kepler-1649 c around its host star Kepler-1649)


  • The Star Kepler-1649 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.052 AU ( 7824849.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.072 AU ( 10815986.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.110 AU ( 16481169.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.162 AU ( 24252762.9 km)
  • Radiation at Planetary Boundary of Kepler-1649 c : 1037.33 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1649)



  • Kopparapu Recent Venus for Star Kepler-1649 distance : 0.059 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1649 distance : 0.075 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1649 distance : 0.072 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1649 distance : 0.080 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1649 distance : 0.148 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1649 distance : 0.156 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1649)



  • Original Kopparapu Recent Venus for Star Kepler-1649 distance : 0.059 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1649 distance : 0.078 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1649 distance : 0.078 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1649 distance : 0.150 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1649 distance : 0.156 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1649)



    (Position in Stellar Map of star Kepler-1649 and its Exoplanet Kepler-1649 c)



    (Zoomed position in Stellar Map of star Kepler-1649 and its Exoplanet Kepler-1649 c (zoom level 3))

    (Synthetic Spectrum of star Kepler-1649*)
    *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