Journal Article

An optimal Mars Trojan asteroid search strategy

M. Todd, P. Tanga, D. M. Coward and M. G. Zadnik

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 424, issue 1, pages 372-376
Published in print July 2012 | ISSN: 0035-8711
Published online July 2012 | e-ISSN: 1365-2966 | DOI:
An optimal Mars Trojan asteroid search strategy

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Trojan asteroids are minor planets that share the orbit of a planet about the Sun and librate around the L4 or L5 Lagrangian points of stability. Although only three Mars Trojans have been discovered, models suggest that at least 10 times this number should exist with diameters ≥1 km. We derive a model that constrains optimal sky search areas and present a strategy for the most efficient use of telescope survey time that maximizes the probability of detecting Mars Trojans. We show that the Gaia space mission could detect any Mars Trojans larger than 1 km in diameter, provided the relative motion perpendicular to Gaia’s CCD array is less than 0.40 arcsec s−1.

Keywords: methods: numerical; methods: observational; celestial mechanics; minor planets, asteroids: general; planets and satellites: general

Journal Article.  3676 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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