00831naa#a2200217#i#450# EN\INFRA-M\bibl\28854 /en/manage/index 20250823224449.6 2712-9640 20191217b2019####ek#y0engy0150####ca RUS RU Optical observations of small spacecraft and space debris at ISTP SB RAS Sayan Observatory Journal article Moscow INFRA-M Academic Publishing LLC. 2019 4 с. Journal article local Астрономия. Астрофизика. Исследование космического пространства. Геодезия. 52 RUS Korobtsev Ivan Vladimirovich Mishina Marina Nikolaevna Karavaev Yurii Stepanovich fht.editorum.ru /en/manage/index