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Rotation period of comet DonatiConsideration is given to the rotation period of comet Donati (1858 VI) whose haloes were approximate parabolic envelopes having foci near the apparent nucleus and vertices toward the sun forward from the tail axis. The regularity and sharpness of the halves suggest that they represent the repetitive ejection of material from an active area which is exposed to solar radiation as the cometary nucleus rotates. Bobrovnikov's results (1954) are used to evaluate the linear expansion velocity of such haloes. This calculation is applied to the comet and a linear correction is used to assess the results.
Document ID
19780052358
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Whipple, F. L.
(Harvard College Observatory and Smithsonian Astrophysical Observatory, Center for Astrophysics, Cambridge Mass., United States)
Date Acquired
August 9, 2013
Publication Date
May 11, 1978
Publication Information
Publication: Nature
Volume: 273
Subject Category
Astrophysics
Accession Number
78A36267
Funding Number(s)
CONTRACT_GRANT: NSG-7082
Distribution Limits
Public
Copyright
Other

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