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Soyuz-2-1v launches four classified payloads

Russian military launched a Soyuz-2-1v/Volga rocket from Site 43 in Plesetsk, successfully delivering four military satellites into orbit on July 10, 2019.

Liftoff

Mission at a glance:

Launch date and time
2019 July 10, 20:14 Moscow Time (17:14 UTC)
Launch vehicle
Soyuz-2-1v No. 78072004
Upper stage
Payload fairing
98KS No. 78021119
Launch site
Payloads
Kosmos-2535, Kosmos-2536, Kosmos-2537, Kosmos-2538

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On July 10, 2019, Russian military launched a Soyuz-2-1v/Volga rocket from Plesetsk, carrying four classified payloads, the official media reported. According to a representative of the Ministry of Defense, the mission lifted off at 20:14 Moscow Time (1:14 p.m. EDT) from Pad 4 at Site 43 and proceeded as planned. This was the 5th mission for the light-weight launch vehicle. Shortly after the planned launch time, the Russian military also confirmed that the Volga upper stage with its payloads had successfully separated from the (second stage) of the launch vehicle at 20:22 Moscow Time. Around midnight Moscow Time, the official Russian media quoted the Ministry of Defense as saying that the all four satellites had been successfully delivered into their orbits. Newly launched satellites were officially designated Kosmos-2535, -2536, -2537 and -2538.

According to the Ministry of Defense, the satellites were intended for the studies of artificial and natural effects of space on the Russian spacecraft and the calibration of radar systems of the Air and Space Forces. Ground control had established and maintained telemetry communications with the spacecraft and their onboard systems had been functioning well, the Ministry of Defense said.

On July 11, the Ministry of Defense also said that three engine firings had been used to insert the Volga upper stage from the mission into a safe disposal orbit away from the satellites.

In its July 11 press-release about the launch, RKTs Progress, the manufacturer of the Soyuz rocket family, said that the mission completed flight testing of the of the Soyuz-2-1v variant. Peculiarly, the company also said that vehicle had carried spacecraft manufactured in Moscow, which eliminated traditional developers of military payloads, such as ISS Reshetnev in Zheleznogorsk, TsSKB Progress in Samara and KB Arsenal in St. Petersburg. That fact, along with secrecy surrounding the mission, points at a possibility of another launch with maneuverable inspector and anti-satellite vehicles.

After the launch, the Combined Space Operations Center, CSpOC, listed four objects associated with the mission:

International ID
NORAD ID
Orbital inclination
Orbital period
Perigee
Apogee
2019-039A
44421
97.88 degrees
97.03 minutes
611 kilometers
622 kilometers
2019-039B
44422
97.88 degrees
97.03 minutes
611 kilometers
622 kilometers
2019-039C
44423
97.89 degrees
97.06 minutes
612 kilometers
624 kilometers
2019-039D
44424
97.10 degrees
97.10 minutes
616 kilometers
623 kilometers

The fifth object, probably representing the Volga upper stage, was then reported to be in a 475 by 511-kilometer orbit with an inclination 97.61 degrees toward the Equator.

As it had been previously the case with the Napryazhenie mission, the newly launched satellites were appeared to be inserted into the co-planar orbit with that of the Kosmos-2486/Persona reconnaissance satellite launched on June 7, 2013, perhaps to enable the rendezvous and inspection.

 

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Last update: July 12, 2019

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plesetsk

Soyuz-2-1v rocket launch on July 10, 2019, carried an insignia dedicated to the 60th anniversary of the Military Unit No. 14056, which serviced dual launch pad complex at Site 43 in Plesetsk. Credit: Russian Ministry of Defense


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mik

The fifth Soyuz-2-1v rocket rolls out from the vehicle assembly building in Plesetsk. Credit: Russian Ministry of Defense


erecting

Soyuz-2-1v is installed on the launch pad. Credit: Russian Ministry of Defense


 

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