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Physical Observations of the Short-Period Comet 1969 IV

Published online by Cambridge University Press:  14 August 2015

K. I. Churyumov  and
S. I. Gerasimenko
K. I. Churyumov
Affiliation:
Department of Astronomy, Kiev University, Kiev, U.S.S.R.
S. I. Gerasimenko
Affiliation:
Department of Astronomy, Kiev University, Kiev, U.S.S.R.

Abstract

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The new short-period comet Churyumov-Gerasimenko, discovered by the authors on plates taken by the Kiev University cometary expedition to Alma-Ata in September 1969, was systematically photographed with fast telescopes at Byurakan and Alma-Ata until March 1970. Measurements were made of the photographic magnitude of the photometric nucleus, as well as of the photographic and photovisual integral magnitudes. The variations in nuclear magnitude were found to be well correlated with changes in the total sunspot area. The integral photometric parameters are Hy = 11.91±0m.54 and n=4.0±0.8 (in the photographic spectral region). Deviations of the tail axis from the prolonged radius vector were considerable. A spectrogram shows the continuum and emission of CN, C2 and C3 in the head, the continuum and a single emission (perhaps CO+) in the tail.

Type
Part I/Observations and Ephemerides
Information
Symposium - International Astronomical Union , Volume 45: The Motion, Evolution of Orbits and Origin of Comets , 1972 , pp. 27 - 34
Copyright
Copyright © Reidel 1972 

References

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