Journal Article

Astrometric observations of Nereid in 2006–2007*

R. C. Qiao, X. Cheng, K. X. Shen, G. Dourneau, S. H. Wang, X. Y. Hu, Z. H. Tang and X. J. Xi

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 391, issue 4, pages 1791-1795
Published in print December 2008 | ISSN: 0035-8711
Published online December 2008 | e-ISSN: 1365-2966 | DOI:
Astrometric observations of Nereid in 2006–2007*

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In this paper, we present 112 new CCD astrometric positions of Nereid, the second and faint satellite of Neptune (mv≃ 19). We observed this small satellite in the 2006–2007 period with the 1 and 2.16-m telescopes of Xinglong Station near Beijing, both equipped with large CCD detectors of 1340 × 1300 and 2080 × 2048 pixels, respectively. The high density and highly accurate star catalogue UCAC2 was used in the reduction so that a classical astrometric calibration method was applied. We have shown that our observations of Nereid appear to be of equal or higher precision (σ≃ 0.2 arcsec) than most of the recent CCD ones.

Keywords: astrometry; planets and satellites: general

Journal Article.  3086 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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