Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979aj.....84..269d&link_type=abstract
Astronomical Journal, vol. 84, Feb. 1979, p. 269-273. NASA-supported research.
Astronomy and Astrophysics
Astronomy
3
Amor Asteroid, Astronomical Photometry, Light Curve, Periodic Variations, Planetary Rotation, Ubv Spectra, Least Squares Method, Luminous Intensity, Phase Shift, Position (Location), Ultraviolet Photometry, Visual Photometry, Asteroids, Lightcurves, Photometry, Amor Asteroids, Alinda Asteroid, Rotation, Period, Observations, Position (Location)
Scientific paper
Eleven light curves and UBV photometry of the Amor asteroid Alinda, a candidate for having a cometary origin, are analyzed. A probable rotation period of 73 h 58 m + or - 3 m (p.e.) is derived on the assumption of two maxima and two minima per cycle in a composite light curve. An absolute V magnitude of 14.10 + or - 0.08 and a phase coefficient of 0.042 + or - 0.003 mag/deg in V are obtained, along with a B-V color of 0.86 + or - 0.02 and a U-B color of 0.50 + or - 0.05, both extrapolated to zero phase. The rotation period is shown to be the longest yet observed for an asteroid. It is concluded that the colors of Alinda are not unusual for an asteroid, that Alinda is probably not an extinct cometary nucleus, that the slow rotation may be a consequence of one or more collisions, and that the pole of Alinda may be nearly perpendicular to the ecliptic.
Dunlap Lawrence J.
Taylor Charles R.
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