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- National ObservatoryBR701 papers
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8 papers · 2 filters
The astrometric Gaia-FUN-SSO observation campaign of 99 942 Apophis
W. Thuillot, D. Bancelin, A. Ivantsov +71
Astrometric observations performed by the Gaia Follow-Up Network for Solar System Objects (Gaia-FUN-SSO) play a key role in ensuring that moving objects first detected by ESA's Gai…
Orbit determination of Transneptunian objects and Centaurs for the prediction of stellar occultations
J. Desmars, J. I. B. Camargo, F. Braga-Ribas +10
The prediction of stellar occultations by Transneptunian objects and Centaurs is a difficult challenge that requires accuracy both in the occulted star position as for the object e…
Astrometry of the main satellites of Uranus: 18 years of observations
J. I. B. Camargo, F. P. Magalhães, R. Vieira-Martins +7
We determine accurate positions of the main satellites of Uranus: Miranda, Ariel, Umbriel, Titania, and Oberon. Positions of Uranus, as derived from those of these satellites, are…
Pluto's atmosphere from stellar occultations in 2012 and 2013
A. Dias-Oliveira, B. Sicardy, E. Lellouch +42
We analyze two multi-chord stellar occultations by Pluto observed on July 18th, 2012 and May 4th, 2013, and monitored respectively from five and six sites. They provide a total of…
Results of two multi-chord stellar occultations by dwarf planet (1) Ceres
A. R. Gomes-Júnior, B. L. Giacchini, F. Braga-Ribas +24
We report the results of two multi-chord stellar occultations by the dwarf planet (1) Ceres that were observed from Brazil on 2010 August 17, and from the USA on 2013 October 25. F…
The APOGEE Spectroscopic Survey of Kepler Planet Hosts: Feasibility, Efficiency, and First Results
Scott W. Fleming, Suvrath Mahadevan, Rohit Deshpande +33
The Kepler mission has yielded a large number of planet candidates from among the Kepler Objects of Interest (KOIs), but spectroscopic follow-up of these relatively faint stars is…