Ekspress-6A No.1
Mission typeCommunication
OperatorRussian Satellite Communications Company (RSCC)
Mission duration7 years (planned)
Failed to orbit
Spacecraft properties
Spacecraft typeKAUR
ManufacturerNPO PM (bus)
Alcatel Space (payload)
Launch mass2,600 kg (5,700 lb)
Power2540 watts
Start of mission
Launch date27 October 1999, 16:16:00 UTC
RocketProton-K / DM-2
Launch siteBaikonur, Site 200/39
ContractorKhrunichev State Research and Production Space Center
Entered serviceFailed to orbit
Orbital parameters
Reference systemGeocentric orbit (planned) [1]
RegimeGeostationary orbit
Longitude11° West
Band17 transponders:
12 C-band
5 Ku-band
Coverage areaRussia
← Ekspress-2

Ekspress-A1 (Russian: Экспрeсс-А1 meaning Express-A1), also designated Ekspress-6A No.1, is a Russian communications satellite which is operated by Russian Satellite Communications Company (RSCC).

Satellite description

It was constructed by NPO Prikladnoi Mekhaniki (ISS Reshetnev) and Alcatel Space and is based on the MSS-2500-GSO satellite bus. It is equipped with seventeen transponders.


The satellite was launched at Baikonur Cosmodrome at Site 200/39 on 27 October 1999, at 16:16:00 UTC. The launch was made by Khrunichev State Research and Production Space Center, and a Proton-K / DM-2 launch vehicle was used.[1] It is part of the Ekspress satellite constellation.

The Russian Ekspress-A1 communications satellite was launched in October 1999 but the Proton-K launch vehicle failed early in flight, during second stage burn. This is the second failure of the 8K82K Proton-K in 1999.[2]


  1. ^ a b "Ekspress-A1, -A2, -A3". Gunter's Space Page. 19 May 2020. Retrieved 26 March 2021.
  2. ^ "Issue 410". Jonathan's Space Report. 28 October 1999. Retrieved 26 March 2021.