Issue 84

Russia: Strela-3 Breaks-Up in LEO

2 Nov 2023: NASA reported Kosmos-2143, a Strela-3 “store and dump” communications satellite disintegrated on orbit on 29 Jun 2023. The event generated six trackable fragments in addition to the original vehicle. The debris is in the vicinity of Kosmos-2143's original 1,416 x 1,398 km orbit with an 82.6° inclination. -…

2 Nov 2023: NASA reported Kosmos-2143, a Strela-3 “store and dump” communications satellite disintegrated on orbit on 29 Jun 2023. The event generated six trackable fragments in addition to the original vehicle. The debris is in the vicinity of Kosmos-2143’s original 1,416 x 1,398 km orbit with an 82.6° inclination.

– Russia launched Kosmos-2143 on 16 May 1991, on a Tsyklon-3 rocket under public designation Kosmos-2143, along with five other Strela-3 payloads weighing around 225 kg each.

-According to NASA, there was a similar event within the Strela-3 family on 22 Nov 1985, when Kosmos-1695, disintegrated in orbit after only 43 days.

-A joint US-Russian investigation suspected an NiH2 battery, operating aboard the satellite under 100 atmospheres of pressure, as the source of the blast.

-Interestingly it was another Strela satellite (a defunct Strela-2M) that collided with a US Iridium communications spacecraft on 10 Feb 2009. That was the first instance in the history of space exploration, when two satellites have collided in space. This was most severe accidental fragmentation on record, resulting in more than 1,800 debris pieces ~10 cm and larger.

Kosmos-2143 debris in low Earth orbit

Strela-3 communications satellite