Lightcurves and poles of seven asteroids

Details Lightcurves and poles of seven asteroids Lightcurves and poles of seven asteroids

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005p%26ss...53.1147l&link_type=abstract

Planetary and Space Science, Volume 53, Issue 11, p. 1147-1165.

Physics

2

Scientific paper

The Asteroids 5 Astraea, 19 Fortuna, 51 Nemausa, 68 Leto, 138 Tolosa, 196 Philomela and 409 Aspasia have been studied using Strömgren photometry observations made in 1997. Simultaneous lightcurves in the uvby Strömgren filters of synodic periods of 0.70004±0.00020, 0.31013±0.00003, 0.32400±0.00020, 0.61910±0.00100, 0.42087±0.00009, 0.34750±0.00020 and 0.37576±0.00060 days, and amplitudes, in the y filter, of 0.m16±0.m05, 0.m30±0.m02, 0.m15±0.m04, 0.m29±0.m02, 0.m43±0.m03, 0.m30±0.m04 and 0.m15±0.m06 have been found for 5 Astraea, 19 Fortuna, 51 Nemausa, 68 Leto, 138 Tolosa, 196 Philomela and 409 Aspasia, respectively. Additional observations of 138 Tolosa and 196 Philomela during February 2000, show lightcurve amplitudes equal or greater than 0.m15 for 138 Tolosa and of 0.m45 for 196 Philomela in 2000 opposition. Solutions for the sense of rotation, sidereal period, pole orientation and shape properties have been proposed for the first time for 138 Tolosa and improved solutions have been obtained for 5 Astraea, 19 Fortuna, 51 Nemausa, 196 Philomela and 409 Aspasia.

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