Issue 109

Russia Launches New BARS-M Imagery Satellite

31 Oct: Russia launched a Soyuz-2-1a rocket from Plesetsk and successfully delivered Cosmos 2579 (61730) into its planned orbit. Cosmos 2579 is the BARS-M no. 6 spacecraft and is nearly co-planar with Cosmos 2567/Bars-M no. 4 (55978). Bars-M satellites are believed to capable of collecting high-resolution images with a…

31 Oct: Russia launched a Soyuz-2-1a rocket from Plesetsk and successfully delivered Cosmos 2579 (61730) into its planned orbit. Cosmos 2579 is the BARS-M no. 6 spacecraft and is nearly co-planar with Cosmos 2567/Bars-M no. 4 (55978). Bars-M satellites are believed to capable of collecting high-resolution images with a ground resolution of ~1 meter. Launch Video.

– Cosmos 2579 is currently in a sun-synchronous orbit of 503x494km with an inclination of 97.6°.

– On 7 Nov Cosmos 2579 circularized its orbit and increased its perigee from 338km to 497km.

– As of 11 Nov Cosmos 2579 has a RAAN off-set with Cosmos 2567 of ~1.1°. I expect the RAAN offset to diminish over time, RAAN offset for Cosmos 2573 and 2556 is only 0.092°.

-While it is nearly co-planar with Cosmos 2567, Cosmos 2579 is currently operating at a slightly higher altitude. Cosmos 2579 SMA = 501.8km and Cosmos 2567 = 487.5km.

– There are now likely 4 operational BARS-M satellites on orbit, Cosmos 2579, Cosmos 2556 (launched 19 May 2022), Cosmos 2573 (launched 21 Dec 2023) and Cosmos 2567 (launched 23 Mar 2023). The first two BARS-M satellites, Cosmos 2503 and 2515 have not maneuvered in over 2 years.

– It appears that Russia is pairing up its BARS-M satellites as Cosmos 2556 and Cosmos 2573 are also co-planar (identical Inclination and RAAN values). The distance between Cosmos 2556 and 2573 is ~10,700km, and the separation between Cosmos 2567 & 2579 is ~13,300kms.

Bars-M is one of several series of reconnaissance satellites Russia introduced in recent years, in attempts to fill the gap left by the retirement of its obsolete film-return Kometa and Kobal’t-M satellites. Other imaging satellites included the now-ended Persona series, and the smaller EMKA.

– Per Russian Space Web: “Originally designed to support cartography, the first Bars-M launched in 2015. The spacecraft’s main instrument, inside the MTsA payload module, consists of a dual telescope called OEK (Optical Electronic Complex) Karat. The triple-lens instrument was developed at the LOMO company in St Petersburg, which also built the main Persona reconnaissance satellite’s imaging system.”

– More Russianspaceweb.com: “The Ministry of Defense said that the spacecraft…had been taken under control by ground assets of the Russian Air and Space Forces, VKS.”

– Russia is likely struggling to meet the demand for high resolution imagery. Reporting indicates Russia is purchasing commercial imagery from China and other nations. BARS-M satellites are controlled by the Russian military which should improve tasking/collection/reporting responsiveness.

Comparison of the Cosmos 2579 and Cosmos 2567 orbits, showing a RAAN offset of about 1.1° on 11 Nov 2024 (spacecockpit.com).

Active BARS-M satellites on 11 Nov 2024, including the Cosmos 2579/2567 and Cosmos 2573/2556 pairs (spaceaware.io).

BARS-M spacecraft rendering, circa 2016 (russianspaceweb.com).