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HD 183263 b

Extrasolar planet in the constellation Aquila

HD 183263 b

Discovery
Discovered by	Marcy et al.[1]
Discovery site	Keck Observatory, Hawaii,  USA
Discovery date	January 25, 2005
Detection method	Doppler spectroscopy
Orbital characteristics
Semi-major axis	1.486±0.023 AU
Eccentricity	0.3728±0.0065[2]
Orbital period (sidereal)	625.10±0.34[2] d
Time of periastron	2452113.0±2.4[2]
Argument of periastron	232.9±1.4[2]
Semi-amplitude	86.16±0.79[2]
Star	HD 183263

HD 183263 b is an extrasolar planet orbiting the star HD 183263. This planet has a minimum mass of 3.6 times more than Jupiter and takes 625 days to orbit the star.^[2] The planet was discovered on January 25, 2005 using multiple Doppler measurements of five nearby FGK main-sequence stars and subgiants obtained during the past 4–6 years at the Keck ObservatoryinMauna Kea, Hawaii. These stars, namely, HD 183263, HD 117207, HD 188015, HD 45350, and HD 99492, all exhibit coherent variations in their Doppler shifts consistent with a planet in Keplerian motion, and the results were published in a paper by Geoffrey Marcy et al. Photometric observations were acquired for four of the five host stars with an automatic telescope at Fairborn Observatory. The lack of brightness variations in phase with the radial velocities supports planetary-reflex motion as the cause of the velocity variations.^[1] An additional planet in the system was discovered later.^[3]

See also[edit]

• HD 183263 c

References[edit]

External links[edit]

• "Simulation HD 183263 b". media4.obspm.fr/. Archived from the original on 2007-12-03. Retrieved 2008-09-08.
• "HD 183263 b". planetquest1.jpl.nasa.gov. Archived from the original on 2008-09-21.
• "HD 183263 b". astrobio.net/.
• "Extrasolar Planets: The Chronology of the Discoveries". obswww.unige.ch/.^{[permanent dead link]}

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