Analysis of the rotation of comet Halley

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Analysis of the rotation of comet Halley

Szegö, K. / Kondor, A. / Larson, S. / Merènyi, E. / Sagdeev, R.Z. / Smith, B.A. / Tòth, I.

Abstract The nucleus of P/Halley rotates as a slightly asymmetric top, the orientation of the rotation axis (i.e., the orientation of the angular momentum vector) is 1 = 39°, b = −54° in the ecliptic system. The error zone is a cone about this axis with a half opening angle of 15°. In the rotation of an asymmetric top the rotation axis is not fixed rigidly to the body; this means that while the nucleus rotates about the axis with the short period of 2.2 +/−.05 days, its long axis “nods” periodically with the long period of 7.4 +/−.05 days. The amplitude of the “nodding” is about 14° +/− 3° in both directions relative to a plane perpendicular to the rotation axis.

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Dokumentinformationen

Titel :

Analysis of the rotation of comet Halley

Beteiligte:

Szegö, K. (Autor:in) / Kondor, A. (Autor:in) / Larson, S. (Autor:in) / Merènyi, E. (Autor:in) / Sagdeev, R.Z. (Autor:in) / Smith, B.A. (Autor:in) / Tòth, I. (Autor:in)

Erschienen in:

Advances in Space Research ; 9 , 3 ; 73-76

Erscheinungsdatum :

1989-01-01

Format / Umfang :

4 pages

ISSN :

0273-1177

DOI :

https://doi.org/10.1016/0273-1177(89)90242-1

Medientyp :

Aufsatz (Zeitschrift)