00734naa#a2200193#i#450# EN\INFRA-M\bibl\33971 20241222211517.7 2500-0535 20191217b2019####ek#y0engy0150####ca ENG RU Optical observations of small spacecraft and space debris at ISTP SB RAS Sayan Observatory Journal article Moscow INFRA-M Academic Publishing LLC. 2019 3 с. Journal article local Астрономия. Астрофизика. Исследование космического пространства. Геодезия. 52 ENG Korobtsev Ivan Vladimirovich Mishina Marina Nikolaevna zh-szf.ru