Kepler-16

Kepler-16 A/B

An artist's rendering of the Kepler-16 system, showing the binary star being orbited by Kepler-16b.
Credit: NASA/JPL-Caltech
Observation data
Epoch J2000      Equinox J2000
Constellation Cygnus
Right ascension 19h 16m 18.1759s[1]
Declination +51° 45′ 26.778″[1]
Characteristics
Spectral type K / M[2]
Astrometry
Proper motion (μ) RA: 14.041±0.054[1] mas/yr
Dec.: −48.601±0.051[1] mas/yr
Parallax (π)13.2893 ± 0.0271 mas[1]
Distance245.4 ± 0.5 ly
(75.2 ± 0.2 pc)
Orbit[3]
PrimaryKepler-16A
CompanionKepler-16B
Period (P)41.079220±0.000078 d
Semi-major axis (a)0.22431±0.00035 AU
Eccentricity (e)0.15944±0.00062
Inclination (i)90.30401±0.0019°
Longitude of the node (Ω)0°
Periastron epoch (T)BJD 2455212.12316
Argument of periastron (ω)
(secondary)		263.464±0.027°
Details
Kepler-16A
Mass0.6897±0.0035 M☉
Radius0.6489±0.0013 R☉
Luminosity0.148[4] L☉
Surface gravity (log g)4.6527±0.0017 cgs
Temperature4,450±150) K
Metallicity [Fe/H]−0.3±0.2 dex
Rotation35.1±1.0 days[5]
Kepler-16B
Mass0.20255±0.00065 M☉
Radius0.22623±0.00059 R☉
Luminosity~0.0057[4] L☉
Surface gravity (log g)5.0358±0.0017 cgs
Temperature~3,311[4] K
Other designations
Gaia DR2 2133476355197071616, KOI-1611, KIC 12644769, GSC 03554-01147, 2MASS J19161817+5145267[6]
Database references
SIMBADdata
KICdata

Kepler-16 is an eclipsing binary star system in the constellation of Cygnus that was targeted by the Kepler spacecraft. Both stars are smaller than the Sun; the primary, Kepler-16A, is a K-type main-sequence star and the secondary, Kepler-16B, is an M-type red dwarf. They are separated by 0.22 AU, and complete an orbit around a common center of mass every 41 days. The system is host to one known extrasolar planet in circumbinary orbit: the Saturn-sized Kepler-16b.

  1. ^ a b c d e Cite error: The named reference Gaia DR2 was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference EPEstar was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference discovery_article was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference Haghighipour2013 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Winn2011 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Simbad was invoked but never defined (see the help page).