Occultation detection of a Neptunian ring-like arc

Details Occultation detection of a Neptunian ring-like arc Occultation detection of a Neptunian ring-like arc

Feb 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.319..636h&link_type=abstract

Nature (ISSN 0028-0836), vol. 319, Feb. 20, 1986, p. 636-640. Research supported by the European Southern Observatory, Universit

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59

Neptune (Planet), Planetary Rings, Stellar Occultation, Astrometry, Imaging Techniques, Space Observations (From Earth), Neptune, Occultations, Photoelectric Methods, Earth-Based Observations, Rings, Telescope Methods, Techniques, Procedure, Astrometry, Models, Theoretical Studies, Lightcurve, Optical Properties, Ring Arcs

Scientific paper

The apparent closest approach of the star SAO186001 to Neptune was observed photoelectrically on July 22, 1984 at Cerro Tololo Inter-American Observatory. A 32-percent signal drop, lasting about 1.2 s, was probably caused by a partially transparent arc of material at a distance of 67,000 km from Neptune. Neptune's arc(s) do not vary smoothly with azimuth, unlike the rings of other Jovian planets.

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