Yamal-402

Yamal-402 (Russian: Ямал-402) is a Russian geostationary communications satellite. It was launched on 8 December 2012, 13:13:43 UTC from Site 200/39 at the Baikonur Cosmodrome in Kazakhstan.^[1] It was built by Thales Alenia Space, and is based on the Spacebus-4000C3 satellite bus. It is equipped with 46 Ku-band) transponders.^[2] It has a design life of 15 years, but reducing to 11 years expected after launch partial failure.^[3]

Yamal-402

Names	Ямал-402 Yamal-400 KA-2
Mission type	Communications
Operator	Gazprom Space Systems
COSPAR ID	2012-070A
SATCAT no.	39022
Website	https://www.gazprom-spacesystems.ru
Mission duration	15 years (planned before launch) 11 years (planned after launch) 12 years, 7 months and 28 days (in progress)
Spacecraft properties
Spacecraft	Yamal-402
Spacecraft type	Yamal-400
Bus	Spacebus-4000C3
Manufacturer	Thales Alenia Space
Launch mass	5,250 kg (11,570 lb)
Power	10.8 kW
Start of mission
Launch date	8 December 2012, 13:13:43 UTC
Rocket	Proton-M / Briz-M
Launch site	Baikonur, Site 200/39
Contractor	Khrunichev State Research and Production Space Center
Entered service	February 2013
Orbital parameters
Reference system	Geocentric orbit
Regime	Geostationary orbit
Longitude	55° East
Transponders
Band	46 Ku-band)
Coverage area	Russia
Yamal constellation ← Yamal-300K Yamal-401 →

History

In February 2009, Gazprom Space Systems announced a contract with Thales Alenia Space for two satellites: Yamal-401 and Yamal-402.^[3] This was the first time a foreign supplier would build a satellite for the domestic Russian market. After much lobby from Russian industry, the contract for the bus and integration of Yamal-401 was cancelled and awarded to ISS Reshetnev, but Thales was allowed to keep the payload supply.^[3][4][5]

Launch problem

On 6 November 2012, the satellite arrives at the launch site of Baikonur.^[6] On 8 December 2012, at 13:13:43 UTC, a Proton-M / Briz-M launches Yamal-402 to a geostationary transfer orbit (GTO).^[7] The same day, Khrunichev State Research and Production Space Center and International Launch Services (ILS) reported an anomaly during the launch in which the Briz-M stage failed 4 minutes before scheduled shut down on its fourth burn.^[8][9]

On 10 December 2012, specialists from Thales Alenia Space carried out maneuvers to bring the satellite into its designated orbit after a premature separation from Briz-M.^[10][11] On 15 December 2012, Yamal-402 was taken to its planned geostationary orbit at the altitude of 36,000 km following a series of four adjustment operations.^[12]

Mission

The satellite lost 4 years of fuel to compensate for lower than expected orbit injection.^[3]

See also

• Spaceflight portal

• Yamal – Communication satellite family operated by Gazprom Space Systems
• Gazprom Space Systems – Satellite communication division of the Russian oil giant Gazprom
• Spacebus (satellite bus) – Satellite platform on which Yamal-402 is based
• Thales Alenia Space – Satellite bus and payload designer and manufacturer