Imaginary Picture of Kepler-974 b

Display orbital revolution of Kepler-974 b around the hoststar Kepler-974
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Exoplanet Name : Kepler-974 b
Alternate Name : "KOI1843.01, 2MASS J19000314+4013147 b, K01843.01, KIC 50806
Radius (Rjup / Re): 0.1400 (Rjup) 1.5693 (Rearth)
Mass (Mjup / Me): 0.0126 (Mjup) 4.0115 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0409 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0115
Orbital Period(Observed/Estimated) 4.19 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.6290
Star Radiation at Atmospheric Boundary: 40816.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 634.4 (K)
Blackbody T 0.3(K) 595.8 (K)
Blackbody T 0.7(K) 482.0 (K)
Tidally Locked Blackbody T 0.1(K) 754.4 (K)
Tidally Locked Blackbody T 0.3(K) 708.5 (K)
Size Class: super-Earth-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-974
Alternate Name : "2MASS J19000314+4013147, KIC 5080636, KOI-1843, WISE J190003.14`ũ@Z@8aAD@>0>@
Star Distance(LY) : 438.0
Stellar Radius(Rsun) : 0.5 (Rsun Measured)
Stellar Mass(Msun) : 0.5 (Msun Measured) 0.5 (Msun Estimated)
Star Age : 4.4 (GY)
Temperature : 3705 (K)
Spectral type : M2
UV portion[%]: 0.4
Visible portion[%]: 18.0
IR portion[%]: 81.6
Metalicity : 0.1
Absolute Magnitude: 6.3
Apparent Magnitude: 12.0
Right Ascension(RA) 285.0131
Declination (DEC) 40.2208
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "Timothy D. Morton, Stephen T. Bryson, Jeffrey L. Coughlin, Jason F. Rowe, Ganesh Ravichandran, Erik A. Petigura, Michael R. Haas, and Natalie M. Batalha"
Discovery Paper - Title FALSE POSITIVE PROBABILITIES FOR ALL KEPLER OBJECTS OF INTEREST: 1284 NEWLY VALIDATED PLANETS AND 780 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-974+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-974%20b/
Kepler-974 b
Kepler-974 b

  • Kepler-974 b is an exoplanet orbiting the star Kepler-974, located about 438.0 light-years (134.3 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-974 has apparent magnitude of 12.0, with absolute magnitude of 6.3.
  • It is 0.5 times more massive and 0.5 times bigger compared with our Sun. The surface temperature is 3705 with its spectral types of M2
  • In this planetary system, the extrasolar planet Kepler-974 b orbits around the star Kepler-974 every 4.2 days with its orbital distance of 0.04 AU ( 6123310.3 km)
  • (Projected orbit of Kepler-974 b around its host star Kepler-974)


  • The Star Kepler-974 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.162 AU ( 24201007.0 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.224 AU ( 33452116.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.341 AU ( 50973622.0 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.501 AU ( 75009917.8 km)
  • Radiation at Planetary Boundary of Kepler-974 b : 40816.31 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-974)



  • Kopparapu Recent Venus for Star Kepler-974 distance : 0.182 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-974 distance : 0.231 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-974 distance : 0.223 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-974 distance : 0.245 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-974 distance : 0.444 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-974 distance : 0.469 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-974)



  • Original Kopparapu Recent Venus for Star Kepler-974 distance : 0.180 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-974 distance : 0.239 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-974 distance : 0.239 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-974 distance : 0.451 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-974 distance : 0.469 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-974)



    (Position in Stellar Map of star Kepler-974 and its Exoplanet Kepler-974 b)



    (Zoomed position in Stellar Map of star Kepler-974 and its Exoplanet Kepler-974 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-974*)
    *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