Periodic activity of Comet Bradfield 1987s |
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| Authors: | Jun-Ichi Watanabe Takumi Abe |
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| Institution: | (1) National Astronomical Observatory, Mitaka, Tokyo, Japan;(2) Department of Electronic Engineering, Denki-tsusin University, Chouhu, Tokyo, Japan |
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| Abstract: | A periodic brightness variation of about 6 days was found by applying maximum entropy method to the visual brightness of Comet Bradfield 1987s. This activity was clearly apparent in January of 1988. No other outstanding period was detected. This suggests that the period of the rotation or precession of the nucleus is about 6 days. |
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