Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992acm..proc..425m&link_type=abstract
In Lunar and Planetary Inst., Asteroids, Comets, Meteors 1991 p 425-428 (SEE N93-19113 06-90)
Astronomy and Astrophysics
Astronomy
21
Asteroids, Astronomical Photometry, Comets, Color, Color-Color Diagram, Comet Nuclei, Distance, Radii, Shapes
Scientific paper
CCD imaging and time series photometry are used to determine the state of activity, nuclear properties and eventually the rotational motion of cometary nuclei. Cometary activity at large heliocentric distances and mantle evolution are not yet fully understood. Results of observations carried out at the 2.1 telescope on Kitt Peak April 10-12 and May 15-16, 1991 are discussed. Color values and color-color diagrams are presented for several comets and asteroids. Estimations of nuclear radii and shapes are given.
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