Issue 115

Plane Change: Russia Maneuvers Cosmos 2576

20 Feb: Cosmos 2576 (59773), a Russian satellite suspected of having anti-satellite capabilities, began a series of maneuvers in late November 2024 which included changes in average altitude (common) as well as changes in inclination (uncommon). From 9-19 Feb, Cosmos 2576 raised its altitude ~35km to 490.6km and…

20 Feb: Cosmos 2576 (59773), a Russian satellite suspected of having anti-satellite capabilities, began a series of maneuvers in late November 2024 which included changes in average altitude (common) as well as changes in inclination (uncommon). From 9-19 Feb, Cosmos 2576 raised its altitude ~35km to 490.6km and increased its inclination 0.1°. Inclination changes are rare due to their large fuel expenditures. Cosmos 2576 had been co-planar with a US high-value satellite, USA 314. It is unknown if Russia altered Cosmos 2576 as a result of changes with USA 314 or other satellites of interest. Per the Joint Capabilities Office (JCO) reporting, the recent maneuvers placed COSMOS 2576 closer to two well-tracked objects. JCO provided no further specifics regarding the objects.

– Russia launched Cosmos 2576 on 16 May 2024 from Plesetsk using a Soyuz 2.1b. There were 9 other payloads on-board.

– Russia launched Cosmos 2576 into a co-planar orbit with USA 314, prompting a rapid response from the US Department of Defense.

– From mid-June until 30 November 2024 Cosmos 2576 maintained an average altitude

between 445-451km with an inclination of 97.2°.

– On 30 Nov – 11 Dec, Russia raised Cosmos 2576 average altitude 24.4km to 471.5km. Simultaneously, Cosmos 2576 changed its inclination 0.1° to 97.3°.

– Cosmos 2576 maintained this average altitude and inclination until 9 Feb 2025.

– From 9 – 19 Feb, Russia raised Cosmos 2576 average altitude 25.2km to 490.9km. It also changed its inclination another 0.1° to 97.4°.