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Asteroid families in the Cybele-group

Vinogradova T.A.

Известия ГАО в Пулкове, № 225: Труды Всероссийской астрометрической конференции «Пулково-2018», Санкт-Петербург, 137–142 (2018)

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A search for families was performed among the Cybele-group asteroids. Proper elements were calculated using the empirical method. A method similar to hierarchical clustering method was applied to identify families. Currently, the identification number is assigned to only two families in this region: 87 Sylvia, 909 Ulla, the existence of which is beyond doubt. Through the use of all currently available asteroids, we detected additionally 8 possible families: 3141 Buchar, 121 Hermione, 643 Scheherezade, 1028 Lydina, 1390 Abastumani, 522 Helga, 3092 Herodotus, 466 Tisiphone. For all the families found, their taxonomic composition was determined and the average albedo was calculated.