Post-perihelion observations of Comet P/Halley at R = 8.5 AU

Details Post-perihelion observations of Comet P/Halley at R = 8.5 AU Post-perihelion observations of Comet P/Halley at R = 8.5 AU

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...218..307w&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 218, no. 1-2, July 1989, p. 307-316.

Astronomy and Astrophysics

Astronomy

20

Astronomical Photometry, Charge Coupled Devices, Coma, Comet Nuclei, Halley'S Comet, Perihelions, Brightness Distribution, Luminosity, Morphology, Comets, Halley, Earth-Based Observations, Ccd Methods, Astronomy, Dust, Photometry, Magnitude, Amplitude, Luminosity, Optical Properties, Comae, Brightness, Comet Nuclei, Data, Imagery

Scientific paper

CCD observations of the Comet P/Halley, obtained with the Danish 1.5-m telescope at the ESO, La Silla, on a total of 21 nights during two observing periods, April 6-22 and May 12-19, are presented, including data on the magnitude of cometary nucleus and the coma magnitudes. These observations represent the first successful series of measurements of post-perihelion brightness variations of the nucleus. It was found, however, that a definitive determination of the rotation period on the basis of these observations alone is not possible.

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