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Pole orientation of 16 Psyche by two independent methodsNineteen new lightcurves of 16 Psyche are presented along with a pole orientation derived using two independent methods, namely, photometric astrometry and magnitude-amplitude-shape-aspect. The pole orientations found using these two methods agree to within 4 deg. The results from applying photometric astrometry were prograde rotation, a sidereal period of 0.1748143 days + or - 0.0000003 days, and a pole at longitude 223 deg and latitude +37 deg, with an uncertainty of 10 deg, and, from applying magnitude-amplitude-shape-aspect a pole at 220 + or - 1 deg, +40 + or - 4 deg, and a modeled triaxial ellipsoid shape (a greater than b greater than c) and a/b = 1.33 + or - 0.07. The discrepancy between the high-pole latitude found here and the low latitudes reported by Lupishko et al. (1982) and Zhou and Yang (1982) is discussed.
Document ID
Document Type
Reprint (Version printed in journal)
Tedesco, E. F.
(California Institute of Technology, Jet Propulsion Laboratory, Pasadena CA, United States)
Taylor, R. C.
(Arizona, University Tucson, AZ, United States)
Date Acquired
August 12, 2013
Publication Date
February 1, 1985
Publication Information
Publication: Icarus
Volume: 61
ISSN: 0019-1035
Subject Category
Lunar And Planetary Exploration
Accession Number
Distribution Limits

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