Imaginary Picture of Kepler-990 b

Display orbital revolution of Kepler-990 b around the hoststar Kepler-990
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Exoplanet Name : Kepler-990 b
Alternate Name : "2MASS J19514517+4652530 b, K01875.01, KIC 9967771 b, KOI-1875 b, KOI-1875.01, WISE J195145.17+465252.7 b"
Status : Confirmed
Radius (Rjup / Re): 0.2320 (Rjup) 2.6005 (Rearth)
Mass (Mjup / Me): 0.0202 (Mjup) 6.4167 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0918 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0272
Orbital Period(Observed/Estimated) 9.92 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 0.9489
Star Radiation at Atmospheric Boundary: 199473.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 943.2 (K)
Blackbody T 0.3(K) 885.8 (K)
Blackbody T 0.7(K) 716.7 (K)
Tidally Locked Blackbody T 0.1(K) 1121.7 (K)
Tidally Locked Blackbody T 0.3(K) 1053.4 (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-990
Alternate Name : "2MASS J19514517+4652530, KIC 9967771, KOI-1875, WISE J195145.17+465252.7"
Star Distance(LY) : 2585.4
Stellar Radius(Rsun) : 1.2 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 3.5 (GY)
Temperature : 5539 (K)
Spectral type : G1
UV portion[%]: 7.0
Visible portion[%]: 43.5
IR portion[%]: 49.5
Metalicity : 0.0
Absolute Magnitude: 3.9
Apparent Magnitude: 13.4
Right Ascension(RA) 297.9382
Declination (DEC) 46.8814
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 796 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-990&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-990%20b/
Kepler-990 b
Kepler-990 b

  • Kepler-990 b is an exoplanet orbiting the star Kepler-990, located about 2585.4 light-years (792.7 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-990 has apparent magnitude of 13.4, with absolute magnitude of 3.9.
  • It is 1.1 times more massive and 1.2 times bigger compared with our Sun. The surface temperature is 5539 with its spectral types of G1
  • In this planetary system, the extrasolar planet Kepler-990 b orbits around the star Kepler-990 every 9.9 days with its orbital distance of 0.09 AU ( 13735845.9 km)
  • (Projected orbit of Kepler-990 b around its host star Kepler-990)


  • The Star Kepler-990 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.802 AU ( 120012950.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.109 AU ( 165889260.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.690 AU ( 252778522.1 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.486 AU ( 371974668.8 km)
  • Radiation at Planetary Boundary of Kepler-990 b : 199473.32 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-990)



  • Kopparapu Recent Venus for Star Kepler-990 distance : 0.843 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-990 distance : 1.068 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-990 distance : 1.031 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-990 distance : 1.131 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-990 distance : 1.899 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-990 distance : 2.003 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-990)



  • Original Kopparapu Recent Venus for Star Kepler-990 distance : 0.841 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-990 distance : 1.098 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-990 distance : 1.112 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-990 distance : 1.932 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-990 distance : 2.009 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-990)



    (Position in Stellar Map of star Kepler-990 and its Exoplanet Kepler-990 b)



    (Zoomed position in Stellar Map of star Kepler-990 and its Exoplanet Kepler-990 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-990*)
    *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