The following information concerning this 1979 Oct. 17 event is extracted from a report by O. V. Dobrovol'skij, Institute of Astrophysics, Dushanbe. Photoelectric observations at Gissar Observatory by N. N. Kiselev, N. V. Narizhnaya and G. P. Chernova (0.7-m reflector): disappearance, 20h44m16s.11 +/- 0s.13 UT; reappearance, 20h44m36s.04 +/- 0s.09; an additional partial phase of mean duration 0s.32 +/- 0s.2 implies an angular diameter of 0".0007 +/- 0".0004 for the star. Very similar results were obtained visually by S. I. Gerasimenko. Visual observations at Ura-Tyube by V. Rakhimov and O. Najmov: disappearance, 20h44m19s.4 +/- 0s.1; reappearance, 20h44m56s.8; a secondary event between 20h47m21s.5 +/- 0s.1 and 20h47m23s.4 is attributed to a satellite of diameter 11 km located 917 km from the center of (65) Cybele (if the occultation were central). Visual observations near the Shakhristan Pass by F. A. Tup'eva apd F. Masumi: disappearance, 20h44m11s.0 +/- 0s.1; reappearance, 20h44m55s.2. The observations at the three sites indicate that the minor planet has an irregular shape; the greatest observed chord (that near the Shakhristan Pass) was 245 km long.
International Astronomical Union Circular
- Pub Date:
- January 1980