Short -Term Nongravitational Effect due to Nucleus Activity of Comet Hale-Bopp

Details Short -Term Nongravitational Effect due to Nucleus Activity of Comet Hale-Bopp Short -Term Nongravitational Effect due to Nucleus Activity of Comet Hale-Bopp

Feb 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002acasn..43...60h&link_type=abstract

Acta Astronomica Sinica, vol.43, no.1, p. 60-65

Astronomy and Astrophysics

Astronomy

Comet Hale-Bopp, Nongravitational Effect, Activity Of The Nucleus

Scientific paper

Whether an activity of comet's nucleus such as a jet can cause observable short-term nongravitational effect/ For several nucleus activities of Comet Hale-Bopp during late February-early April 1997, their astrometric data in the same period were analyzed. It is found that the deviations of the observed position from the calculated one according to the ephemeris are obviously more than the observational error as well as the offset of the nucleus mass-center from cometary light-center. Therefore, the results show that nucleus activities indeed can cause observable short-term nongravitational effect. The possible short-term variation of sun-comet distance due to the effect is estimated and the relation between the effect and corresponding activities is discussed.

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