 16 Cygni Bb rendered in Celestia | |
| Discovery | |
|---|---|
| Discovered by | William D. Cochran, Artie P. Hatzes, R. Paul Butler, Geoff Marcy |
| Discovery site | United States |
| Discovery date | 22 October 1996 |
| Radial velocity | |
| Orbital characteristics | |
| 1.681 ± 0.097 AU (251,500,000 ± 14,500,000 km) | |
| Eccentricity | 0.689 ± 0.011[1] |
| 798.5 ± 1.0 d | |
| Inclination | 45 or 135[1] |
| 2,446,549.1 ± 6.6 | |
| 83.4 ± 2.1[1] | |
| Semi-amplitude | 50.5 ± 1.6 |
| Star | 16 Cygni B |
| Physical characteristics | |
| Mass | 2.38 ± 0.04[1] MJ |
16 Cygni Bb or HD 186427 b is an extrasolar planet approximately 69 light-years (21 parsecs) away in the constellation of Cygnus.[2] The planet was discovered orbiting the Sun-like star 16 Cygni B, one of two solar-mass (M☉) components of the triple star system 16 Cygni in 1996.[3] It orbits its star once every 799 days and was the first eccentric Jupiter and planet in a double star system to be discovered. The planet is abundant in lithium.[4]
- ^ a b c d Cite error: The named reference
Plávalová2013was invoked but never defined (see the help page). - ^ Cite error: The named reference
Cochran1997was invoked but never defined (see the help page). - ^ "The Extrasolar Planet Encyclopaedia — 16 Cyg B b". Extrasolar Planets Encyclopaedia. Retrieved 2020-08-15.
- ^ Deal, Morgan; Richard, Olivier; Vauclair, Sylvie (2015-12-01). "Accretion of planetary matter and the lithium problem in the 16 Cygni stellar system". Astronomy & Astrophysics. 584: A105. arXiv:1509.06958. Bibcode:2015A&A...584A.105D. doi:10.1051/0004-6361/201526917. ISSN 0004-6361.