Imaginary Picture of Kepler-877 b

Display orbital revolution of Kepler-877 b around the hoststar Kepler-877
/
Exoplanet Name : Kepler-877 b
Alternate Name : "2MASS J19192619+4631216 b, K01520.01, KIC 9765975 b, KOI-1520 b, KOI-1520.01, WISE J191926.17+463121.7 b"
Status : Confirmed
Radius (Rjup / Re): 0.1890 (Rjup) 2.1185 (Rearth)
Mass (Mjup / Me): 0.0167 (Mjup) 5.3030 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.1295 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0505
Orbital Period(Observed/Estimated) 18.46 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.1816
Star Radiation at Atmospheric Boundary: 52300.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 674.9 (K)
Blackbody T 0.3(K) 633.8 (K)
Blackbody T 0.7(K) 512.8 (K)
Tidally Locked Blackbody T 0.1(K) 802.7 (K)
Tidally Locked Blackbody T 0.3(K) 753.8 (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-877
Alternate Name : "2MASS J19192619+4631216, KIC 9765975, KOI-1520, WISE J191926.17+463121.7"
Star Distance(LY) : 1910.9
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 4.6 (GY)
Temperature : 5311 (K)
Spectral type : K0
UV portion[%]: 5.5
Visible portion[%]: 41.0
IR portion[%]: 53.5
Metalicity : -0.1
Absolute Magnitude: 4.3
Apparent Magnitude: 13.2
Right Ascension(RA) 289.8591
Declination (DEC) 46.5227
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 723 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-877&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-877%20b/
Kepler-877 b
Kepler-877 b

  • Kepler-877 b is an exoplanet orbiting the star Kepler-877, located about 1910.9 light-years (585.9 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-877 has apparent magnitude of 13.2, with absolute magnitude of 4.3.
  • It is 0.8 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5311 with its spectral types of K0
  • In this planetary system, the extrasolar planet Kepler-877 b orbits around the star Kepler-877 every 18.5 days with its orbital distance of 0.13 AU ( 19370257.1 km)
  • (Projected orbit of Kepler-877 b around its host star Kepler-877)


  • The Star Kepler-877 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.579 AU ( 86660073.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.801 AU ( 119786868.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.220 AU ( 182528678.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.795 AU ( 268598946.8 km)
  • Radiation at Planetary Boundary of Kepler-877 b : 52300.61 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-877)



  • Kopparapu Recent Venus for Star Kepler-877 distance : 0.617 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-877 distance : 0.781 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-877 distance : 0.754 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-877 distance : 0.827 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-877 distance : 1.399 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-877 distance : 1.476 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-877)



  • Original Kopparapu Recent Venus for Star Kepler-877 distance : 0.613 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-877 distance : 0.804 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-877 distance : 0.811 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-877 distance : 1.423 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-877 distance : 1.480 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-877)



    (Position in Stellar Map of star Kepler-877 and its Exoplanet Kepler-877 b)



    (Zoomed position in Stellar Map of star Kepler-877 and its Exoplanet Kepler-877 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-877*)
    *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