Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...117..362s&link_type=abstract
Astronomy and Astrophysics, vol. 117, no. 2, Jan. 1983, p. 362-364. Research supported by the Fonds zur Foerderung der Wissensch
Astronomy and Astrophysics
Astrophysics
6
Asteroids, Electrophotometry, Light Curve, Planetary Rotation, Ubv Spectra, Astronomical Coordinates, Phase Shift, Asteroids, Rotation, Periods, Lightcurves, Austria 136 Asteroid, Hypatia 238, Photoelectric Observations, Ultraviolet, Wavelengths, Telescopic Observations, Amplitude, Photometry, Data, Coordinates, Distance, Phase Angles
Scientific paper
The asteroids 136 Austria and 238 Hypatia were observed photoelectrically in UBV during four nights in Feb. 1981, using the 0.6 m Bochum telescope (ESO-time) at the European Southern Observatory, La Silla, Chile. For 136 Austria, a rotation period of P equals 11.5 + or 0.1 h (0.479 + or - 0.004 d) could be derived with a lightcurve partially observed and an amplitude of at least 0.40 mag. 238 Hypatia has a rotation period of P equals 8.9 + or - 0.1 h (0.371 + or - 0.004 d) and a lightcurve amplitude of 0.12 mag. For both asteroids UBV-colors were measured frequently and no variation during rotation was remarked, exceeding the scatter.
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