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Orbit of 1976 AAThe orbit of Asteroid 1976 AA is described, with attention given to calculations of its period and its distance from earth, both of which could be accurately and quickly determined by measuring the minor planet's position over wide ranges of hour angle on one to three nights. The geometry of the asteroid's orbit is compared to that of earth's orbit, and the periodicity of the minor planet's approaches to earth is projected. The motion of 1976 AA over an interval of seven centuries into both past and future is also studied; the possibility of its libration with respect to earth or to Venus is examined. Some data on closest approaches of the asteroid to Mars and Venus, as well as to earth, are given.
Document ID
19770059850
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Marsden, B. G.
(Harvard College Observatory and Smithsonian Astrophysical Observatory Cambridge, Mass., United States)
Williams, J. G.
(California Institute of Technology, Jet Propulsion Laboratory, Pasadena Calif., United States)
Date Acquired
August 9, 2013
Publication Date
August 1, 1977
Publication Information
Publication: Icarus
Volume: 31
Subject Category
Astronomy
Accession Number
77A42702
Funding Number(s)
CONTRACT_GRANT: NAS7-100
Distribution Limits
Public
Copyright
Other

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