00791naa#a2200205#i#450# EN\\bibl\28854 20260311151135.3 2712-9640 20191217b2019####ek#y0engy0150####ca RUS RU Optical observations of small spacecraft and space debris at ISTP SB RAS Sayan Observatory Journal article Irkutsk Institute of Solar-Terrestrial Physics SB RAS 2019 4 с. Journal article local Астрономия. Астрофизика. Исследование космического пространства. Геодезия. 52 RUS Korobtsev Ivan Vladimirovich Mishina Marina Nikolaevna Karavaev Yurii Stepanovich ras.editorum.ru