. Authors . Problem . Method . Advises . Contact Analysis of an accuracy of CCD asteroid observations carried out by professional and amateur astronomers . An accuracy estimation of CCD asteroid observations contained in the Minor Planet Center Database and carried out in the years 1999 - 2006 is realized. About 20 millions individual positions of the Numbered and Unnumbered Minor Planets were tested by means of calculations of (O-C) residuals to derive "mean error of a single observation" for more than 400

... 33, No. 5, pp. 332­339. i Young Nuclei in Dwarf Elliptical Galaxies I. V. Chilingarian1, 1 2 2 ** , O. K. Sil'chenko1, V. L. Afanasiev2 , and Ph. ... In all three galaxies, the luminosity-weighted age of the nuclei (4 Gyr) is considerably younger than that of the population in the outer regions of the galaxies. ... Kinematically decoupled structures associated with a young metal-rich stellar population can be formed precisely through a dissipative merger of gas-rich galaxies several Gyr ago. ...