Observation of two new L4 Neptune Trojans in the Dark Energy Survey supernova fields

Romer, A K, Sevilla-Noarbe, I and The DES Collaboration, et al. (2016) Observation of two new L4 Neptune Trojans in the Dark Energy Survey supernova fields. Astronomical Journal, 151. p. 39. ISSN 0004-6256

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Abstract

We report the discovery of the eighth and ninth known Trojans in stable orbits around Neptune's leading Lagrange point, L4. The objects 2014 QO 441 and 2014 QP 441 were detected in data obtained during the 2013-14 and 2014-15 observing seasons by the Dark Energy Survey, using the Dark Energy Camera (DECam) on the 4-meter Blanco telescope at Cerro Tololo Inter-American Observatory. Both are in high-inclination orbits (18.8 ∘ and 19.4 ∘ respectively). With an eccentricity of 0.104, 2014 QO 441 has the most eccentric orbit of the eleven known stable Neptune Trojans. Here we describe the search procedure and investigate the objects' long-term dynamical stability and physical properties.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Research Centres and Groups: Astronomy Centre
Subjects: Q Science > QB Astronomy
Depositing User: Richard Chambers
Date Deposited: 05 Dec 2016 13:20
Last Modified: 06 Mar 2017 16:51
URI: http://sro.sussex.ac.uk/id/eprint/65799

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Project NameSussex Project NumberFunderFunder Ref
STFC Consolidated Grant SupplementG1316STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCILST/M000753/1