HD_12661_b Knowpia

HD 12661 b
	The exoplanet HD 12661 b (min mass ~2.3 MJ) as rendered by Celestia
Discovery
Discovered by	Fischer et al.
Discovery site	California & Carnegie; Planet Search; USA
Discovery date	April 4, 2001
Detection method	Radial velocity
Orbital characteristics
Semi-major axis	0.834 ± 0.048 AU (124,800,000 ± 7,200,000 km)
Eccentricity	0.361 ± 0.011
Orbital period (sidereal)	262.53 ± 0.27 d
Time of periastron	2,450,214.1 ± 2.9
Argument of periastron	296.3±2.6
Semi-amplitude	74.19 ± 0.85
Star	HD 12661
Physical characteristics
Mass	>2.34 ± 0.19 MJ

HD 12661 b is a giant exoplanet two and a half times the mass of Jupiter orbiting around the star HD 12661.^[1]

References edit

^ Fischer, Debra A.; et al. (2001). "Planetary Companions to HD 12661, HD 92788, and HD 38529 and Variations in Keplerian Residuals of Extrasolar Planets". The Astrophysical Journal. 551 (2): 1107–1118. Bibcode:2001ApJ...551.1107F. doi:10.1086/320224.

Butler; et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal. 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701. S2CID 119067572.