A Photometric Investigation of the Asteroid (89) Julia
Abstract
New photometric data of the light curve of the minor planet (89) Julia were obtained on nine nights during the 1972 opposition using the 60cm telescope at OHP. A synodic period of 11 h23 m14 s ± 7 s and an amplitude of 0.25mag 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.
- Publication:
-
Icarus
- Pub Date:
- June 1975
- DOI:
- 10.1016/0019-1035(75)90028-7
- Bibcode:
- 1975Icar...25..339S
- Keywords:
-
- Asteroids;
- Astronomical Photometry;
- Light Curve;
- Data Acquisition;
- Luminous Intensity;
- Nocturnal Variations;
- Perigees;
- Ubv Spectra