Photometric observations of 1978 CA and 1978 DA

Details Photometric observations of 1978 CA and 1978 DA Photometric observations of 1978 CA and 1978 DA

Jun 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978msngr..13....3s&link_type=abstract

ESO Messenger, June 1978, p. 3, 4.

Astronomy and Astrophysics

Astronomy

1

Asteroids, Astronomical Photometry, Light Curve, Astronomical Models, Planetary Rotation

Scientific paper

UBV photometric observations of the earth-crossing asteroid 1978 CA and the Mars-crosser 1978 DA are reported. Light curves are plotted which indicate that 1978 CA has a rotation period of approximately 3 hr 45 min and that 1978 DA rotates about its axis much more slowly than 1978 CA. The following color indices are determined: (B-V) of approximately 0.90 and (U-B) of about 0.48 for 1978 CA and (B-V) = 0.83 and (U-B) = 0.41 for 1978 DA. A model that may explain the observed smooth and nearly symmetric light curve of 1978 CA is briefly discussed.

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