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Yamal-101 (Russian: Ямал-101) was a geostationary communications satellite operated by Gazprom Space Systems and built by RSC Energia.[1] It was, along with Yamal-102 the first communications satellite of the Yamal programme and the first iteration of the USP Bus.[2][3] It was a 1,360 kg (3,000 lb) satellite with 2200 watts of power (1300 watts available for the payload) on an unpressurized bus.[4] It had eight SPT-70 electric thrusters by OKB Fakel for station keeping.[5] Its payload was 12 C-band equivalent transponders supplied by Space Systems/Loral.[6]

Yamal-101

Names	Ямал-101 Yamal-100 KA-1
Mission type	Communications
Operator	Gazprom Space Systems
COSPAR ID	1999-047A
SATCAT no.	25896
Website	https://www.gazprom-spacesystems.ru
Mission duration	12 years (planned) Failed on orbit
Spacecraft properties
Spacecraft	Yamal-101
Spacecraft type	Yamal-100
Bus	USP Bus
Manufacturer	RSC Energia (bus) Space Systems/Loral (payload)
Launch mass	1,360 kg (3,000 lb)
Power	2200 watts
Start of mission
Launch date	6 September 1999, 16:36:00 UTC
Rocket	Proton-K / Blok DM-2M
Launch site	Baikonur, Site 81/23
Contractor	Khrunichev State Research and Production Space Center
Entered service	Failed on orbit
End of mission
Last contact	6 September 1999
Orbital parameters
Reference system	Geocentric orbit
Regime	Geostationary orbit
Longitude	49° East (planned)
Transponders
Band	12 C-band
Coverage area	Russia
Yamal constellation Yamal-102 →

History

It was launched along Yamal-102, on 6 September 1999 at 16:36:00 UTC from Baikonur Site 81/23 by a Proton-K / Blok DM-2M directly to geostationary orbit.[7][8] But a failure in the electrical system at solar panel deployment meant that it was lost right after the successful launch.[9][1]

Rename of Yamal-102

After Yamal-101 failure, Gazprom Space Systems registered Yamal-102 as Yamal-101. This has caused significant confusion but the records are clear that the satellite that failed was, in fact, the original Yamal-101.[9][10] Insurance paid US$50 million for the failure.[11]

See also

• Yamal-102 – Twin satellite that was launched together and ended up commissioned into service with the Yamal-101 registration
• Yamal – Communication satellite family operated by Gazprom Space Systems
• Gazprom Space Systems – Satellite communication division of the Russian oil giant Gazprom
• USP Bus – The satellite bus on which Yamal-101 is based
• RSC Energia – The designer and manufacturer of the Yamal-101 satellite

References

External links

• Gunter Space Page on the Yamal 101/102

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