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New astrometric observations of Triton in 2007-2009

dc.contributor.authorQIAO, R.C.
hal.structure.identifierGraduate School of the Chinese Academy of Sciences [GSCAS]
dc.contributor.authorZHANG, H.Y.
hal.structure.identifierM2A 2014
dc.contributor.authorDOURNEAU, G.
dc.contributor.authorYU, Y.
dc.contributor.authorDAN, D.
dc.contributor.authorSHEN, X.
hal.structure.identifierGraduate School of the Chinese Academy of Sciences [GSCAS]
dc.contributor.authorCHENG, X.
hal.structure.identifierNational Time Service Center
dc.contributor.authorXI, X. J.
hal.structure.identifierNational Time Service Center
dc.contributor.authorHU, X. Y.
hal.structure.identifierNational Time Service Center
hal.structure.identifierShanghai Astronomical Observatory [Shanghai] [SHAO]
dc.contributor.authorWANG, S. H.
dc.date.issued2014
dc.identifier.issn0035-8711
dc.description.abstractEnAstrometric positions of the Neptunian satellite Triton with a visual magnitude of 13.5 were obtained during three successive oppositions in 2007, 2008 and 2009. A total of 1095 new observed positions of Triton were collected during 46 nights of observations, involving eight missions and three telescopes. We compared our observations to the best ephemerides of Triton available now. This comparison has shown that our observations present a high level of accuracy as they provide standard deviations of residuals hardly higher than 50 mas and mean residuals lower than 30 mas, corresponding to about only 500 km in the position of the very distant satellite Triton. Moreover, we have compared most of the different planetary ephemerides of Neptune available now as well as two recent orbit models of Triton. These new comparisons have clearly shown the differences between all of these ephemerides which can be significant and that are presented in this work.
dc.language.isoen
dc.publisherOxford University Press (OUP): Policy P - Oxford Open Option A
dc.title.enNew astrometric observations of Triton in 2007-2009
dc.typeArticle de revue
dc.identifier.doi10.1093/mnras/stu566
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Instrumentation et méthodes pour l'astrophysique [astro-ph.IM]
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Instrumentation et méthodes pour l'astrophysique [astro-ph.IM]
bordeaux.journalMonthly Notices of the Royal Astronomical Society
bordeaux.page3749-3756
bordeaux.volume440
bordeaux.peerReviewedoui
hal.identifierhal-00982898
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00982898v1
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