Photoelectric lightcurves of the asteroids 139 Juewa and 161 Athor, obtained with the 50 CM photometric telescope at ESO, La Silla

Details Photoelectric lightcurves of the asteroids 139 Juewa and 161 Athor, obtained with the 50 CM photometric telescope at ESO, La Silla Photoelectric lightcurves of the asteroids 139 Juewa and 161 Athor, obtained with the 50 CM photometric telescope at ESO, La Silla

Oct 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26as...42...85d&link_type=abstract

Astronomy and Astrophysics Supplement Series, vol. 42, Oct. 1980, p. 85-89.

Astronomy and Astrophysics

Astronomy

2

Asteroids, Electrophotometry, Light Curve, Periodic Variations, Planetary Rotation, Asteroids, Light Curve, Photoelectric Observations, Juewa Asteroid, Athor Asteroid, Rotation, Period, Parameters, Photometry, Data, Ultraviolet, Wavelengths, Analysis, Astronomy

Scientific paper

The rotation period of 139 Juewa, if one assumes its lightcurve to have two maxima and two minima per rotation cycle, is twice that reported by Goguen et al. (1976), namely 41.8 hours. The mean B-V and U-B colors are found to be 0m.69 ± 0m.01 and 0m.29 ± 0m.02, respectively. The lightcurve of 161 Athor is typical of that for a regular figure of revolution. The rotation period is 7h.288 ± 0h.007, with a maximum amplitude of 0.27 mag. We determined the phase coefficient and mean colors to be βV = 0.038 mag/deg, B-V = 0m.72 ± 0m.02 and U-B = 0.m 0m.03.

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