Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975icar...25..339s&link_type=abstract
Icarus, vol. 25, June 1975, p. 339-343. Research supported by the Oesterreichische Nationalbank.
Astronomy and Astrophysics
Astronomy
5
Asteroids, Astronomical Photometry, Light Curve, Data Acquisition, Luminous Intensity, Nocturnal Variations, Perigees, Ubv Spectra
Scientific paper
New photometric data of the light curve of the minor planet (89) Julia were obtained on nine nights during the 1972 opposition. A synodic period of 11h 23m 14s plus or minus 7s and an amplitude of 0.25 mag were derived from the measurements. The light curve is rather unsymmetric and no plausible explanation for this has been offered so far. The measurements have been carried out in instrumental V'; the data obtained in B' and U' supplement all conclusions from V' data concerning the rotation of Julia.
Lustig G.
Schober Hans Josef
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