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A diagram of the Kepler-43 System, compared to our Inner Solar System.
Observation data
Epoch J2000      Equinox J2000
Constellation Cygnus[1]
Right ascension 19h 00m 57.810s
Declination +46° 40′ 05.62″
Apparent magnitude (V) 13.96[2]
Spectral type G0V~G0IV[3]
Distance 6271[3] ly
(1950 pc)
Mass 1.32±0.09[2] M
Radius 1.42±0.07[2] R
Luminosity [2] L
Temperature 6041±123[2] K
Metallicity [Fe/H] 0.33±0.11[2] dex
Rotational velocity (v sin i) 5.5±1.5[2] km/s
Other designations

Kepler-43,formerly known as KOI-135, is a star in the northern constellation of Cygnus. It is located at the celestial coordinates: Right Ascension 19h 00m 57.810s}, Declination +46° 40′ 05.62″.[4] With an apparent visual magnitude of 13.996,[2] this star is too faint to be seen with the naked eye.

The Kepler-43 planetary system[3]
(in order from star)
Mass Semimajor axis
Orbital period
Eccentricity Inclination Radius
b 3.23±0.19 MJ 0.0449 3.024095


  1. ^ "Cygnus – constellation boundary", The Constellations, International Astronomical Union, retrieved 2011-12-15 
  2. ^ a b c d e f g h Kepler-43b, NASA Ames Research Center, retrieved 2011-12-06 
  3. ^ a b c Schneider, Jean, "Star: Kepler-43", Extrasolar Planets Encyclopaedia, Paris Observatory, retrieved 2011-12-06 
  4. ^ "Kepler Discoveries". 2011-12-05. 

Coordinates: Sky map 19h 00m 57.810s, +46° 40′ 05.62″