Imaginary Picture of Kepler-61 b

Display orbital revolution of Kepler-61 b around the hoststar Kepler-61
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Exoplanet Name : Kepler-61 b
Alternate Name : "2MASS J19411308+4228310 b, K01361.01, KIC 6960913 b, KOI-1361 b, KOI-1361.01, WISE J194113.07+422831.1 b"
Status : Confirmed
Radius (Rjup / Re): 0.1920 (Rjup) 2.1521 (Rearth)
Mass (Mjup / Me): 0.0169 (Mjup) 5.3812 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.2700 (AU) 0.2700 (AU Est.)
Eccentricity : 0.2500
Orbital Period(Yrs) 0.1639
Orbital Period(Observed/Estimated) 59.88 (Days Obs.) 64.05 (Days Est.)
Surface Gravity (G Earth) 1.1618
Star Radiation at Atmospheric Boundary: 2013.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 299.0 (K)
Blackbody T 0.3(K) 280.8 (K)
Blackbody T 0.7(K) 227.2 (K)
Tidally Locked Blackbody T 0.1(K) 355.5 (K)
Tidally Locked Blackbody T 0.3(K) 333.9 (K)
Size Class: sub-Neptune-size
Mass Class:
Detection Type : Primary Transit
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Habitable
Habitability by Kopparapu: Not habitable
Star Name : Kepler-61
Alternate Name : "2MASS J19411308+4228310, KIC 6960913, KOI-1361, WISE J194113.07+422831.1"
Star Distance(LY) : 1092.9
Stellar Radius(Rsun) : 0.7 (Rsun Measured)
Stellar Mass(Msun) : 0.6 (Msun Measured) 0.7 (Msun Estimated)
Star Age : 1.0 (GY)
Temperature : 4017 (K)
Spectral type : K7 V
UV portion[%]: 0.7
Visible portion[%]: 24.1
IR portion[%]: 75.2
Metalicity : 0.0
Absolute Magnitude: 7.4
Apparent Magnitude: 15.0
Right Ascension(RA) 295.3045
Declination (DEC) 42.4753
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "Sarah Ballard, David Charbonneau, Francois Fressin, Guillermo Torres, Jonathan Irwin, Jean-Michel Desert, Elisabeth Newton, Andrew W. Mann, David R. Ciardi, Justin R. Crepp, Christopher E. Henze, Stephen T. Bryson, Steven B. Howell, Elliott P. Horch, Mark E. Everett, Avi Shporer"
Discovery Paper - Title Exoplanet Characterization by Proxy: a Transiting 2.15 R_Earth Planet Near the Habitable Zone of the Late K dwarf Kepler-61
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-61+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-61%20b/
Kepler-61 b
Kepler-61 b

  • Kepler-61 b is an exoplanet orbiting the star Kepler-61, located about 1092.9 light-years (335.1 pc) away from Solar System. Its discovery was publicly announced on 2013.
  • The host star Kepler-61 has apparent magnitude of 15.0, with absolute magnitude of 7.4.
  • It is 0.6 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 4017 with its spectral types of K7 V
  • In this planetary system, the extrasolar planet Kepler-61 b orbits around the star Kepler-61 every 59.9 days with its orbital distance of 0.27 AU ( 40391425.1 km)
  • (Projected orbit of Kepler-61 b around its host star Kepler-61)


  • The Star Kepler-61 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.237 AU ( 35456141.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.328 AU ( 49009653.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.499 AU ( 74679865.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.735 AU ( 109894693.6 km)
  • Radiation at Planetary Boundary of Kepler-61 b : 2013.46 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-61)



  • Kopparapu Recent Venus for Star Kepler-61 distance : 0.265 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-61 distance : 0.336 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-61 distance : 0.324 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-61 distance : 0.357 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-61 distance : 0.637 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-61 distance : 0.672 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-61)



  • Original Kopparapu Recent Venus for Star Kepler-61 distance : 0.262 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-61 distance : 0.347 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-61 distance : 0.347 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-61 distance : 0.647 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-61 distance : 0.673 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-61)



    (Position in Stellar Map of star Kepler-61 and its Exoplanet Kepler-61 b)



    (Zoomed position in Stellar Map of star Kepler-61 and its Exoplanet Kepler-61 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-61*)
    *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