Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a...100..311s&link_type=abstract
Astronomy and Astrophysics, vol. 100, no. 2, July 1981, p. 311-313. Research supported by the Oesterreichischer Fonds zur Foerd
Astronomy and Astrophysics
Astronomy
2
Asteroids, Astronomical Photometry, Electrophotometry, Light Curve, Planetary Rotation, Magnitude, Ubv Spectra, Asteroids, 404 Arsinoe Asteroid, 628 Christine Asteroid, Photometry, Data, Photoelectric Observations, Astronomy, Light Curve, Ultraviolet, Period, Colors, Rotation, Wavelengths, Magnitude
Scientific paper
The asteroids 404 Arsinoe and 628 Christine were observed during their opposition approaches in 1979, using the ESO-0.5 m telescope at the European Southern Observatory, Chile.
For 404 Arsinoe a period of rotation could be derived with P = 8h.93 ± 0±.02 (0d.372 ± 0d.001) which rules out the previous value P = 6h.0? given by Tedesco (1979). The double wave lightcurve has a total amplitude of Δm=0.36.
628 Christine was observed for more than seven hours, showing only one minimum. The period could be expected to be 14h < P < 21h; the minimum amplitude of. the lightcurve is Δm ≧ 0.40.
Absolute magnitudes were computed and UBV colors were measured frequently; color indices did not show any variations during rotational phases, exceeding the scatter.
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