Issue 88

Russia: Launches New Bars-M Imagery Satellite

21 Dec: Russia launched a Soyuz-2-1b (also report of 2-1a) rocket lifted off from Plesetsk and successfully delivered a spacecraft for the Ministry of Defense. The spacecraft has since been renamed Kosmos-2573 and could be the latest of 5 Bars-M imagery satellites. Launch Video . - Kosmos-2573 (Bars-M N°5 ) is in a…

21 Dec: Russia launched a Soyuz-2-1b (also report of 2-1a) rocket lifted off from Plesetsk and successfully delivered a spacecraft for the Ministry of Defense. The spacecraft has since been renamed Kosmos-2573 and could be the latest of 5 Bars-M imagery satellites. Launch Video.

– Kosmos-2573 (Bars-M N°5) is in a 338 by 499-kilometer orbit with an inclination 97.57°. Interestingly, it is co-planar with Kosmos-2556 which was launched in May 2022.

The fact that Kosmos-2573 is in the same orbital plane as Kosmos-2556 (Bars-M N°3) is a strong sign that the latter has failed and that the new satellite serves as a replacement.

– Kosmos-2556 significantly lowered its orbit in July 2022 (from about 560 to 500 km), presumably as a result of a decision to operate these satellites at lower altitudes in order to improve their resolution (possibly related to the war in Ukraine).

– After Kosmos-2556 performed one more (minor) orbit correction in October 2022 it has shown no signs of life since (as a reminder, Bars-M N°1 and 2 were also short-lived satellites).

-Assuming Kosmos-2556 is non-operational, Kosmos-2573 brings the total number of working Bars-M satellites to 2, the other being Kosmos-2567 which Russia launched on 23 March 2023.

-Originally designed to support cartography, the first Bars-M launched in 2015. The Bars-M’s main instrument inside the MTsA payload module consists of a dual telescope called OEK Karat, where OEK stands for the Optical Electronic Complex. The triple-lens instrument was developed at the LOMO company in St Petersburg, which also built the main imaging system for the Persona reconnaissance satellite.

Bars-M satellites are believed to capable of collecting high-resolution images with a ground resolution around 1 meter.

Bars-M is one of several series of reconnaissance satellites that 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.

Bars-M rendering (Russianspaceweb.com)

Kosmos-2556 non-maneuvering since October 2022 (CelesTrak.org)

Bars-M constellation (SpaceAware.io)