A possible satellite of (146) Lucina

Details A possible satellite of (146) Lucina A possible satellite of (146) Lucina

Feb 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icar...61..224a&link_type=abstract

Icarus (ISSN 0019-1035), vol. 61, Feb. 1985, p. 224-231.

Astronomy and Astrophysics

Astronomy

15

Asteroids, Astrometry, Natural Satellites, Stellar Occultation, Astronomical Photometry, Faint Object Camera, Light Curve, Telescopes, Video Equipment, Asteroids, Lucina, Satellites, Observations, Astronomy, Equipment, Astrometry, Photometry, Distance, Diameter, Size

Scientific paper

The video observation of the appulse of (146) Lucina with the star AGK3 + 17 deg 1309, made on April 18, 1982, at the Meudon Observatory in France, is reported. A Nocticon camera mounted on a 1-m telescope and video equipment are used for the observation. Long-focus video observation is a method which is well adapted to the observation of occultations of stars by asteroids, because photometric reduction, even for short events, and astrometric reduction are simultaneously possible. The technique also eliminates the need for a diaphragm which may produce artifacts and introduce noise in the signal. A short extinction, which is not due to the asteroid itself, is observed during the observation at Meudon and leads to the postulation of the existence of a faint satellite in the neighborhood of (146) Lucina. Analysis of the short secondary event indicates that the 0.6-sec occultation corresponds to a 5.7-km chord, which is the lower limit of the satellite's diameter, and that the projected distance of the satellite to the center of the primary is nearly 1600 km at the occultation time.

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