NASA NTRS · 19890034623
Circumstances for Pluto-Charon mutual events in 1989
Abstract
Circumstances for 90 Pluto-Charon mutual events occurring during the 1989 opposition are presented. It is found that the deepest and longest events will occur near postopposition quadrature in early August. Two new stars are selected as comparison stars for events occurring before opposition in 1989, and it is noted that the 1988 comparison stars should be used for events occurring after opposition.
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Tholen, David J., Buie, Marc W.. 1988-12-01. Circumstances for Pluto-Charon mutual events in 1989. https://ntrs.nasa.gov/citations/19890034623
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