Official name COSMOS 2054
Alternative name Cosmos-2054 (Altair 14L)
Cospar ID 1989-101A
Norad ID 20391
Launch date 1989-12-27
Launch site TTMTR
Launch vehicle Proton-K Blok-DM-2
Country/Organization USSR / Russia
Type application Communication, data relay
RCS size LARGE
Decay date ON ORBIT
Period (min) 1437.62
Inclination (deg) 12.65
Perigee (km) 35804
Apogee (km) 35829
Eccentricity 0.000349001158683847
Mean motion (revs. per day) 1.00165551397449
Semi-Major axis (km) 42194.635
Raan (deg) 336.9205
Arg of perigee (deg) 162.9532
Shape Cyl + 2 Pan + 2 Dish
Mass (kg) 2400
Diameter (m) 4.1
Height (m) 6.6
Span (m^2) 16
Lifetime 5 years
Contractors NPO Prikladnoi Mekhaniki (NPO PM)
Propulsion 4 × SPT-70 Stationary Plasma Thrusters
Configuration KAUR-4
Power 2 deployable solar arrays, batteries

The Luch or Altair satellites were the first generation of Soviet and later Russian data relay satellites. These satellites provided communications service to the Mir space station, Buran space shuttle, Soyuz-TM spacecraft, military satellites and the TsUPK ground control center.

Luch was built by NPO-PM based on their KAUR-4 3-axis stabilized geostationary satellite platform, which featured plasma station-keeping engines and hydrazine monopropellant orientation engines. The 2400 kg satellites featured three large antennas and numerous, small helical antennas permitted data relays in the 15/14, 15/11, and 0.9/0.7 GHz bands. Each satellite was equipped with three Arion transponders by NPO Radiopribor for data transmission. The design life was five years.

Beginning in 1995, four satellites were launched. The first three were operated under the designations Kosmos 1700, Kosmos 1897 and Kosmos 2054. The Kosmos designator was dropped for the fourth satellite, which was simply refered as Luch 1. A fifth satellite was never launched.

Luch was replaced by the more capable Luch-2 / Gelios series, of which only one was launched.

Satellite COSPAR Date LS Launch Vehicle Remarks
COSMOS 1700 1985-102A 1985-10-25 TTMTR Proton-K Blok-DM-2
COSMOS 1897 1987-096A 1987-11-26 TTMTR Proton-K Blok-DM-2
COSMOS 2054 1989-101A 1989-12-27 TTMTR Proton-K Blok-DM-2
LUCH 1994-082A 1994-12-16 TTMTR Proton-K Blok-DM-2