HD 196885 Ab

HD 196885 Ab

Discovery
Discovered by	Correia et al.
Discovery site	La Silla Observatory
Discovery date	October 23, 2007
Detection method	Radial velocity
Orbital characteristics
Apastron	3.36 AU (503 Gm)
Periastron	1.24 AU (186 Gm)
Semi-major axis	2.30 AU (344 Gm)
Eccentricity	0.462
Orbital period (sidereal)	1349 d 3.693 y
Average orbital speed	18.6
Time of periastron	2451236
Argument of periastron	91.4
Semi-amplitude	39.5
Star	HD 196885 A

HD 196885 Ab (also referred to as HD 196885 b) is a Jovian planet with a minimum mass 2.96 times the mass of Jupiter.^[1][2] This planet was discovered on October 23, 2007. In 2022, the planet's inclination and true mass were measured via astrometry, showing it to be about 3.39 M_J.^[3]

References

1. Correia, A. C. M.; Udry, S.; Mayor, M.; Eggenberger, A.; Naef, D.; Beuzit, J.-L.; Perrier, C.; Queloz, D.; Sivan, J.-P.; Pepe, F.; Santos, N. C.; Ségransan, D. (2008). "The ELODIE survey for northern extra-solar planets. IV. HD 196885, a close binary star with a 3.7-year planet". Astronomy and Astrophysics. 479 (1): 271–275. arXiv:0711.3343. Bibcode:2008A&A...479..271C. doi:10.1051/0004-6361:20078908. S2CID 119261807.
2. Schneider, J. "Notes for star HD 196885". Extrasolar Planets Encyclopaedia. Archived from the original on July 2, 2007. Retrieved 2008-08-19.
3. Chauvin, G.; Videla, M.; Beust, H.; Mendez, R.; Correia, A. C. M.; Lacour, S.; Tokovinin, A.; Hagelberg, J.; Bouchy, F.; Boisse, I.; Villegas, C.; Bonavita, M.; Desidera, S.; Faramaz, V.; Forveille, T.; Gallenne, A.; Haubois, X.; Jenkins, J. S.; Kervella, P.; Lagrange, A. -M.; Melo, C.; Thebault, P.; Udry, S.; Segransan, D. (2022). "Chasing extreme planetary architectures: I- HD196885Ab, a super-Jupiter dancing with two stars?". arXiv:2211.00994 [astro-ph.EP].

External links

• "HD 196885". Exoplanets. Archived from the original on 2009-11-25. Retrieved 2008-11-04.