CCD photometry, spin and shape models of five asteroids: 225, 360, 416, 516, and 1223

¹ Astronomical Observatory, A. Mickiewicz University, Słoneczna 36, 60-286 Poznań, Poland
² Astronomical Observatory, Warsaw University, Al. Ujazdowskie 4, 00-478 Warszawa, Poland
³ Institut de Mécanique Céleste, 77 Av. Denfert Rochereau, 75014 Paris, France
⁴ Astroqueyras Association, 05350 Saint Veran, France
⁵ Institute of Astronomy, Rozhen National Observatory, P.O. Box 136, 4700 Smolyan, Bulgaria

Send offprint request to: T. Michałowski, e-mail: tmich@amu.edu.pl

Received: 9 June 2000
Accepted: 11 August 2000

Abstract


New CCD photometric observations for 225 Henrietta (1995), 360 Carlova (1996, 1997, 1998), 416 Vaticana (1995–96, 1998), 516 Amherstia (1995, 1996), and 1223 Neckar (1995–96) carried out at five observatories are presented. New synodical periods for two asteroids (225, 1223) have been obtained. Using all available lightcurves, the spin vectors, senses of rotation, and triaxial elipsoid models of these five asteroids have been determined or refined.