@article{f3df533ddc6849f4a3e378f78f7c49cb,
title = "Stellar occultation by 2060 Chiron",
abstract = "A 14th magnitude double star was occulted by 2060 Chiron on 1993 November 7. Observations of this event were obtained from five locations in California. An occultation by Chiron's nucleus was recorded at one of these sites, while a possible graze by the nucleus was seen at the next closest location. If this possible graze represents a true detection of the nucleus, Chiron's radius is determined to be 89.6 ± 6.8 km, assuming a circular outline for the shape. If the nucleus was not seen at the second location, Chiron's radius is only constrained as being greater than 90.2 ± 6.5 km. The presence of dust in Chiron's inner coma was also detected in four of the five occultation datasets. Lightcurve features were identified that may be explained by narrow, collimated jets of material, and by a much larger region of dust distributed asymmetrically about Chiron's nucleus. Periodic fluctuations in the dust may have been detected in one of the lightcurves. If this periodicity is real, and is induced as a result of Chiron's rotation, then a minimum expansion velocity for the dust is found to be ∼40 m sec-1.",
author = "Bus, {Schelte J.} and Buie, {Marc W.} and Schleicher, {David G.} and Hubbard, {William B.} and Marcialis, {Robert L.} and Richard Hill and Wasserman, {Lawrence H.} and Spencer, {John R.} and Millis, {Robert L.} and Franz, {Otto G.} and Bosh, {Amanda S.} and Dunham, {Edward W.} and Ford, {Charles H.} and Young, {James W.} and Elliot, {J. L.} and Richard Meserole and Olkin, {Catherine B.} and McDonald, {Stephen W.} and Foust, {Jeffrey A.} and Sopata, {Lisa M.} and Bandyopadhyay, {Reba M.}",
note = "Funding Information: Our deepest thanks to Frank Santore of the San Diego Astronomical Association and to Bob Thicksten of Palomar Mountain Observatory. Each provided an observing site at a moment{\textquoteright}s notice for those of us desperately seeking clear skies on the night of the occultation. We are also deeply indebted to the HST High Speed Photometer Team, who provided instrument time in obtaining the FGS observations of Ch02. Thanks also to Mike Belton and Dave Jewitt for their very helpful comments and suggestions as referees of the manuscript. This project benefitted from NASA Planetary Astronomy Grant support for Hubbard (NAGW-1555); Elliot (NAGW-1494); Millis, Buie, Wasserman, and Spencer (NAGW-1912); and Schleicher (NAGW-3884). NSF Grants to Lowell Observatory (AST-9121473) and MIT (AST-9120099) provided support for building the portable occultation systems used at two of the observing sites. The HST observations were supported by HSP GTO Grant NASG5-1613 (Univ. of Wisconsin). Software used in the analysis of the HST observations was developed for the HST Astrometry Team under NASA Grant NAG5-1603 (Univ. of Texas).",
year = "1996",
month = oct,
doi = "10.1006/icar.1996.0173",
language = "English (US)",
volume = "123",
pages = "478--490",
journal = "Icarus",
issn = "0019-1035",
publisher = "Academic Press Inc.",
number = "2",
}