Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...127..301s&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 127, no. 2, Nov. 1983, p. 301-303. Research supported by the Steiermaerkischer
Astronomy and Astrophysics
Astronomy
13
Asteroids, Astronomical Photometry, Light Curve, Natural Satellites, Planetary Rotation, Electrophotometers, Asteroids, C Asteroids, Diotima, Rotation, Period, Lightcurves, Satellites, Astronomy, Photoelectric Observations, Amplitude, Characteristics, Physical Properties, Photometry
Scientific paper
The C-type asteroid 423 Diotima, one of the asteroids with diameter larger than 200 km not yet studied for rotation rates (Schober et al., 1980), was observed photoelectrically at ESO, Chile, in August 1981, using the 0.6 m Bochum telescope and at OHP, France, in November 1982, using the 1.0 m telescope at Mt. Chiran. A rotation period of P = 8h was derived for 423 Diotima from the observations in 1981, which showed a symmetrical lightcurve with an amplitude of only 0m.06. The observations in 1982 at a different aspect are compatible with the 1981 result, but show an additional feature of 0m.10 in the lightcurve, which might suggest the existence of a satellite of this large asteroid.
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