✦ LIBER ✦

Water Ice on Nereid

✍ Scribed by Robert H. Brown; Dale P. Cruikshank; Yvonne Pendleton; Glenn J. Veeder

Book ID: 102571363
Publisher: Elsevier Science
Year: 1999
Tongue: English
Weight: 63 KB
Volume: 139
Category: Article
ISSN: 0019-1035
DOI: 10.1006/icar.1999.6109

No coin nor oath required. For personal study only.

✦ Synopsis

A near-infrared spectrum of Neptune's satellite Nereid was obtained at the Keck Observatory on 1997 May 1. The spectrum shows two absorptions near 1.54 and 2.03 µm and is well matched by a synthetic spectrum of an intimate mix of low-temperature, particulate water ice and dark, bluecolored material. Comparisons of Nereid's spectrum with those of other objects such as the Centaurs 1997 CU 26 and 5145 Pholus, and Neptune's largest regular satellite Proteus, admit the possibility that Nereid is a primordial satellite of Neptune (and perhaps its only remaining one) rather than a captured object, but more data are needed to rule out one scenario or the other.

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