16 Cygni

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Triple Star
16 Cygni
Image of 16 Cygni (center)
Image of 16 Cygni (center)
Observation
data epoch : J2000.0
AladinLite
Constellation swan
Vis. Brightness
(total) 		5.32 mag
Known exoplanets

1

Astrometry
Radial velocity (−27.61 ± 0.08) km / s /
(−27.73 ± 0.16) km / s
parallax  (47.28 ± 0.03) mas /
(47.28 ± 0.02) mas
distance  ~ 69 ly
(~ 21 pc )
Age ~ 7 billion
Proper movement
Rec. Share: −148.30 ± 0.06 mas / a /
−134.79 ± 0.05 mas / a
Dec. portion: −158.96 ± 0.07 mas / a /
−162.49 ± 0.05 mas / a
Individual data
Names 16 Cygni A, 16 Cygni B, 16 Cygni C
Observation data:
Right ascension 16 Cygni A 194148.95419 h 41 m 48.954 s
16 Cygni B 194151.97319 h 41 m 51,973 s
16 Cygni C
declination 16 Cygni A 2503130.219+ 50 ° 31 ′ 30.219 ″
16 Cygni B 2503103.086+ 50 ° 31 ′ 03.086 ″
16 Cygni C
Apparent
brightness 		16 Cygni A (5.95) m
16 Cygni B (6.20) m
16 Cygni C m
Typing:
Spectral class 16 Cygni A G1.5 Vb
16 Cygni B G3 V
16 Cygni C M? V
BV color index 16 Cygni A (0.64)
16 Cygni B (0.66)
16 Cygni C
UB color index 16 Cygni A (0.20)
16 Cygni B (0.21)
16 Cygni C
Astrometry:
rel. Brightness
(G-band) 		16 Cygni A (5.80 ± 0.01) mag
16 Cygni B (6.06 ± 0.01) mag
16 Cygni C like
rel. Brightness
(J-band) 		16 Cygni A (5.09 ± 0.21) mag
16 Cygni B (4.99 ± 0.04) mag
16 Cygni C like
Physical Properties:
Dimensions 16 Cygni A (1.08) M ☉
16 Cygni B (1.04) M ☉
16 Cygni C << 0.5 M ☉
radius 16 Cygni A (1.23) R ☉
16 Cygni B (1.12) R ☉
16 Cygni C << 0.5 R ☉
Luminosity 16 Cygni A (1.55) L ☉
16 Cygni B (1.25) L ☉
16 Cygni C L ☉
Effective temperature 16 Cygni A (5830) K.
16 Cygni B (5751) K.
16 Cygni C K
Metallicity [Fe / H] 16 Cygni A (0.10)
16 Cygni B (0.05)
16 Cygni C
Designations and catalog entries
Flamsteed-Bez. 16 Cygni
WDS catalog WDS J19418 + 5032AB
ADS catalog ADS 12815 AB
Other
names 		FY 765.1
Bonn diam. 16 Cygni A BD + 50 ° 2847
16 Cygni B BD + 50 ° 2848
16 Cygni C BD
Bright Star Cat. 16 Cygni A HR 7503
16 Cygni B HR 7504
16 Cygni C MR
HD catalog 16 Cygni A HD 186408
16 Cygni B HD 186427
16 Cygni C HD
SAO catalog 16 Cygni A SAO 31898
16 Cygni B SAO 31899
16 Cygni C SAO
Tycho catalog 16 Cygni A TYC 3565/1524/1
16 Cygni B TYC 3565/1525/1
16 Cygni C TYC

16 Cygni is a star system in the constellation Cygnus. The system has an apparent magnitude of 6.2 mag. It consists of 3 components: two yellow dwarfs (16 Cygni A and 16 Cygni B) and one red dwarf (16 Cygni C) . This makes this system a triple star system . The stars (16 Cygni A) and (16 Cygni C) orbit each other at a distance of 73 AU . These two stars are in turn orbited by 16 Cygni B at a distance of 860 AU.

planet

In 1996, William D. Cochran discovered an exoplanet orbiting the star 16 Cygni B using the radial velocity method . This is called 16 Cygni Bb . Due to its high mass , it is believed to be a gas giant . At the time of discovery, the planet was the one with the greatest eccentricity , it belongs to the group of eccentric Jupiter .

properties

The planet orbits its central star about every 799.5 days at a distance of about 1.68 AU with an eccentricity of 0.681. This is higher than the eccentricity of all planets in the solar system . It has a mass of about 534.1 earth masses or about 1.68 Jupiter masses.

Web links

Individual evidence

  1. ↑ 16 Cygni-B. Retrieved August 26, 2018 .
  2. ↑ a b c d e 16 Cyg A. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed March 16, 2019 .
  3. ↑ a b c d e 16 Cyg B. In: SIMBAD. Center de Données astronomiques de Strasbourg, accessed March 16, 2019 .
  4. ↑ a b c d Travis S. Metcalfe, Orlagh L. Creevey, Guy R. Davies: Asteroseismic Modeling of 16 Cyg A & B using the Complete Kepler Data Set . In: The Astrophysical Journal Letters . 811, No. 2, 2015. arxiv : 1508.00946 . bibcode : 2015ApJ ... 811L..37M . doi : 10.1088 / 2041-8205 / 811/2 / L37 .
  5. ↑ a b c d e 16 Cyg. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed March 16, 2019 .
  6. ↑ a b Marcelo Tucci Maia, Jorge Melendez, Ivan Ramierz: High precision abundances in the 16 Cyg binary system: a signature of the rocky core in the giant planet . In: The Astrophysical Journal Letters . 790, No. 2, 2014. arxiv : 1407.4132 . bibcode : 2014ApJ ... 790L..25T . doi : 10.1088 / 2041-8205 / 790/2 / L25 .
  7. ↑ Raghavan, Todd J. Henry, Brian D. Mason, John P. Subasavage, Wei ‐ Chun Jao, Thom D. Beaulieu, Nigel C. Hambly: Two Suns in The Sky: Stellar Multiplicity in Exoplanet Systems . In: The Astrophysical Journal . 646, No. 1, 2006, pp. 523-542. arxiv : astro-ph / 0603836 . bibcode : 2006ApJ ... 646..523R . doi : 10.1086 / 504823 .
  8. ↑ Cochran, Artie Hatzes P., R. Paul Butler, Geoffrey W. Marcy: The Discovery of a Planetary Companion to 16 Cygni B . In: The Astrophysical Journal . 483, No. 1, 1997, pp. 457-463. arxiv : astro-ph / 9611230 . bibcode : 1997ApJ ... 483..457C . doi : 10.1086 / 304245 .