HD 114729 b

HD 114729 b is an extrasolar planet^[1] approximately 114 light years away in the constellation of Centaurus. This planet is probably slightly less massive than Jupiter. It is an "eccentric Jupiter" meaning that it does not orbit very near the star like the famous 51 Pegasi b but further out and its orbit is very oval-shaped. The mean distance from the star is 2.11 AU, about twice the Earth's distance from the Sun. At periastron, the planet is only 1.43 AU from the star (comparable to the distance of Mars from the Sun), and at apoastron, the orbital distance is 2.72 AU (inner asteroid belt).^[2]

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±15 d 3.050 y
Time of periastron	2,450,520±67
Argument of periastron	93±30
Semi-amplitude	18.8±1.3
Star	HD 114729

References

1. Butler, R. Paul; et al. (2003). "Seven New Keck Planets Orbiting G and K Dwarfs". The Astrophysical Journal. 582 (1): 455–466. Bibcode:2003ApJ...582..455B. CiteSeerX 10.1.1.7.6988. doi:10.1086/344570. S2CID 17608922.
2. Butler, R. P.; 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. hdl:2299/1103. S2CID 119067572. Archived from the original on 2019-12-07. Retrieved 2009-04-23.

External links

• "HD 114729 b". Extrasolar Planets Encyclopaedia. Archived from the original on 2010-04-07. Retrieved 2008-07-24.