Cosmos 2557

Launch Success

Liftoff Time (GMT)

09:18:06

Thursday July 7, 2022

Mission Details

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Cosmos 2557

Wiki

GLONASS-K (Russian: Глобальная навигационная спутниковая система, "Global Navigation Satellite System") is the latest satellite design intended as a part of the Russian GLONASS radio-based satellite navigation system. Developed by ISS Reshetnev (Information Satellite Systems Reshetnev) and first launched on 26 February 2011, it is a substantial improvement of the previous GLONASS-M second-generation satellites, having a longer lifespan and better accuracy. GLONASS-K is the first unpressurised GLONASS satellite — all of its equipments are able to operate in a vacuum. Due to this, the satellite's mass has been substantially reduced: GLONASS-K has a mass of just 935 kg compared to its predecessor GLONASS-M, which had a mass of 1450 kg. The new satellite has an operational lifetime of 10 years, three years longer than that of GLONASS-M and seven years longer than the lifetime of the original GLONASS satellite. It also increased the power supply from GLONASS-M's 1400 watts to 1600 watts. GLONASS-K will transmit additional navigation signals to improve the system's accuracy. Existing FDMA signals, 2 military and 2 civilian, will be transmitted on the L1 and L2 bands, and additional civilian CDMA signals will be transmitted in the L1, L2, L3 and L5 bands.

Medium Earth Orbit

1 Payload

935 kilograms

Rocket

Active
Soyuz 2.1b/Fregat-M

Active Since 2011

RKK Energiya logo

Manufacturer

RKK Energiya

Price

$25.00 million

Rocket

Height: 46.94m

Payload to Orbit

LEO: 7,500 kg

GTO: 3,250 kg

Liftoff Thrust

4,550 Kilonewtons

Fairing

Diameter: 4.11m

Height: 11.43m

Stages

4

Strap-ons

4

Launch Site

Site 43/4

Plesetsk Cosmodrome, Russia

Fastest Turnaround

37 hr 53 min

Stats

Soyuz 2.1b


74th

Mission

3rd

Mission of 2022

2022


78th

Orbital launch attempt