Eccentric Jupiter

Eccentric Jupiter HD 96167 b has a comet like orbit.

An Eccentric Jupiter is a Jovian planet that orbits its star in a highly eccentric orbit,^{[citation needed]} much like a comet. Eccentric Jupiters may disqualify a planetary system from having earth-like planets in it because a massive and highly eccentric gas giant may remove all earth mass planets from the habitable zone.

To date, it appears that approximately 7% of all stars (half of the known planetary systems) have an Eccentric Jupiter (e > 0.1), making these planets more common than Hot Jupiters.^{[citation needed]}

One surprising result that has come out of the more than 200 extrasolar planet discoveries as of 2006 is that 15 planets have high eccentricities (e > 0.6).^[1]

The typical exoplanet with an orbital period greater than 5 days has a median eccentricity of 0.23.^[2]

Habitable zone planets near Eccentric Jupiters:^[1]

See also

• Extrasolar planet

References

1. ^ ^{a b} Wittenmyer et al. (2007). "Dynamical and Observational Constraints on Additional Planets in Highly Eccentric Planetary Systems". The Astronomical Journal 134 (3): 1276–1284. doi:10.1086/520880. http://www.iop.org/EJ/article/1538-3881/134/3/1276/205882.html. 
2. ^ Kathryn; Fischer; Marcy; et al. (2009). Old, Rich, and Eccentric: Two Jovian Planets Orbiting Evolved Metal-Rich Stars. . Publications of the Astronomical Society of the Pacific 121 (880): 613–620. arΧiv:0904.2786. 

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