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A thick cloud of Neptune Trojans and their colors.
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A thick cloud of Neptune Trojans and their colors.

Author: SS Sheppard Affiliation: Department of Terrestrial Magnetism, Carnegie Institution of Washington, 5241 Broad Branch Road NW, Washington, DC 20015, USA. sheppard@dtm.ciw.edu; CA Trujillo
Edition/Format: Article Article : English
Publication:Science (New York, N.Y.) 2006 Jul 28; 313(5786): 511-4
Other Databases: WorldCat; WorldCat
Summary:
The dynamical and physical properties of asteroids offer one of the few constraints on the formation, evolution, and migration of the giant planets. Trojan asteroids share a planet's semimajor axis but lead or follow it by about 60 degrees near the two triangular Lagrangian points of gravitational equilibrium. Here we report the discovery of a high-inclination Neptune Trojan, 2005 TN(53). This discovery demonstrates  Read more...
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Details

Document Type: Article
All Authors / Contributors: SS Sheppard Affiliation: Department of Terrestrial Magnetism, Carnegie Institution of Washington, 5241 Broad Branch Road NW, Washington, DC 20015, USA. sheppard@dtm.ciw.edu; CA Trujillo
ISSN:0036-8075
Language Note: English
Unique Identifier: 110021198
Awards:

Abstract:

The dynamical and physical properties of asteroids offer one of the few constraints on the formation, evolution, and migration of the giant planets. Trojan asteroids share a planet's semimajor axis but lead or follow it by about 60 degrees near the two triangular Lagrangian points of gravitational equilibrium. Here we report the discovery of a high-inclination Neptune Trojan, 2005 TN(53). This discovery demonstrates that the Neptune Trojan population occupies a thick disk, which is indicative of "freeze-in" capture instead of in situ or collisional formation. The Neptune Trojans appear to have a population that is several times larger than the Jupiter Trojans. Our color measurements show that Neptune Trojans have statistically indistinguishable slightly red colors, which suggests that they had a common formation and evolutionary history and are distinct from the classical Kuiper Belt objects.

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