Occultation detection of a neptunian ring-like arc

W. B. Hubbard, A. Brahic, B. Sicardy, L. R. Elicer, F. Roques, F. Vilas

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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.

Original languageEnglish (US)
Pages (from-to)636-640
Number of pages5
Issue number6055
StatePublished - Dec 1 1986

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    Hubbard, W. B., Brahic, A., Sicardy, B., Elicer, L. R., Roques, F., & Vilas, F. (1986). Occultation detection of a neptunian ring-like arc. Nature, 319(6055), 636-640. https://doi.org/10.1038/319636a0