Rotation period of 234 Barbara, a further slowly spinning asteroid

Details Rotation period of 234 Barbara, a further slowly spinning asteroid Rotation period of 234 Barbara, a further slowly spinning asteroid

Mar 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a....96..302s&link_type=abstract

Astronomy and Astrophysics, vol. 96, no. 1-2, Mar. 1981, p. 302-305. Research supported by the Oesterreichischer Fonds zur Foer

Astronomy and Astrophysics

Astrophysics

3

Asteroids, Astronomical Photometry, Light Curve, Planetary Rotation, A Stars, Electrophotometers, Periodic Variations, Asteroids, Spin, Rotation, Period, 234 Barbara Asteroid, S Asteroids, Photoelectric Observations, Light Curve, Amplitude, Absolute Magnitude, Photometry, Data, Color

Scientific paper

The S-type asteroid 234 Barbara was observed photoelectrically for variations at CTIO, Chile, during the opposition in September 1979. A rotation period of P=26h5±0h.1(≙ 1d.104 ± 0d.004) was derived, with a lightcurve amplitude of at least Δm ≧ 0m.24. The lightcurve seems to show double wave characteristic, though the primary maximum and one of the minima are not observed directly. Absolute magnitude is Vbar(1,0) =9m.34 with B-V = +0m.92 and U-B=+0m.48; a phase coefficient of β = 0.035 mag/deg was derived.

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