HD 114729 b

Discovery
Discovered by	Butler,Marcy, Vogt
Discovery site	United States
Discovery date	2003
Detection method	Radial velocity
Orbital characteristics
Apastron	2.46 AU (368,000,000 km)
Periastron	1.76 AU (263,000,000 km)
Semi-major axis	2.11 ± 0.12 AU (316,000,000 ± 18,000,000 km)
Eccentricity	0.167±0.055
Orbital period (sidereal)	1114±15d 3.050y
Time of periastron	2,450,520±67
Argument of periastron	93±30
Semi-amplitude	18.8±1.3
Star	HD 114729

HD 114729 b is anextrasolar planet^[1] approximately 114light years away in theconstellation ofCentaurus. This planet is probably slightly less massive thanJupiter. It is an "eccentric Jupiter" meaning that it does not orbit very near the star like the famous51 Pegasi b but further out and its orbit is very oval-shaped. The mean distance from the star is 2.11AU, about twice theEarth's distance from the Sun. Atperiastron, the planet is only 1.43 AU from the star (comparable to the distance ofMars from the Sun), and atapoastron, the orbital distance is 2.72 AU (innerasteroid belt).^[2]

• "HD 114729 b".Extrasolar Planets Encyclopaedia. Archived fromthe original on 2010-04-07. Retrieved2008-07-24.

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