Occultation detection of a Neptunian ring-like arc
摘要：
The apparent closest approach of the star SAO186001 to Neptune was observed photoelectrically on 22 July 1984 at Cerro Tololo Inter-American Observatory. A 32% 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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关键词：
Neptune (Planet Planetary Rings Stellar Occultation Astrometry Imaging Techniques Space Observations (From Earth) NEPTUNE OCCULTATIONS PHOTOELECTRIC METHODS EARTH-BASED OBSERVATIONS RINGS
DOI：
10.1038/319636a0
被引量：
年份：
1986
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