Photometry and models of selected main belt asteroids. VII. 350 Ornamenta, 771 Libera, and 984 Gretia
Abstract
We analyze photometric observations of the three main-belt asteroids 350 Ornamenta, 771 Libera, and 984 Gretia, conducted over a twelve-year interval. Our data and those of other authors allow us to determine pole and shape models using the lightcurve inversion technique. In all three cases, a single pole solution was obtained without any significant mirror solution: Ornamenta - P = 9.180 414 h, λp = 184°, βp = -29° Libera - P = 5.890 423 h, λp = 64°, βp = -78° Gretia - P = 5.778 025 h, λp = 245°, βp = +52°. This analysis and the development of asteroid models increase the set of asteroids with known spin and shape parameters, which consists of only around 100 objects.
Composite lightcurves (Figs. [see full textsee full textsee full text]-[see full textsee full textsee full text]), and aspect data (Table [see full textsee full textsee full text]) are only available in electronic form at http://www.aanda.org Photometric data are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/508/1503- Publication:
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Astronomy and Astrophysics
- Pub Date:
- December 2009
- DOI:
- 10.1051/0004-6361/200912741
- Bibcode:
- 2009A&A...508.1503M
- Keywords:
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- techniques: photometric;
- minor planets;
- asteroids