Kosmos 1300
Kosmos 1300 also known as Tselina-D #30 was an electronic signals intelligence satellite launched by the Soviet Union on 8 August 1981 from Plesetsk Cosmodrome Site 32/1 on a Tsyklon-3 rocket.
It is estimated to weigh two tons and have a lifetime of two months. Since it stopped functioning, Kosmos 1300 has become space debris.