The sizes of 1978 CA and 1978 DA

Details The sizes of 1978 CA and 1978 DA The sizes of 1978 CA and 1978 DA

Jun 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978msngr..13....5d&link_type=abstract

ESO Messenger, June 1978, p. 5.

Astronomy and Astrophysics

Astronomy

1

Asteroids, Astronomical Photometry, Planetary Structure, Size Determination, Albedo, Light Curve, Planetary Rotation, Ubv Spectra

Scientific paper

Observational work aimed at determining the albedos and mean diameters of the asteroids 1978 CA and 1978 DA is briefly described. The albedos obtained are 0.068 + or - 0.006 for 1978 CA and 0.17 + or 0.03 for 1978 DA; the mean diameters are 1.86 + or - 0.04 km for 1978 CA and 0.90 + or - 0.05 km for 1978 DA. It is noted that both objects showed typical S-type UBV colors and that 1978 CA exhibited a very low albedo for an asteroid with reddish colors. A rotation period of 3 hr 45 min 38 + or - 3 sec is derived for 1978 CA. A light curve of 1978 CA in the Johnson V and I colors is plotted along with the total averaged light curve (without the data points) of 1978 CA and a short stretch of the light curve of 1978 DA.

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