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Gorizont
Gorizont -

Credit: © Mark Wade. 15,623 bytes. 338 x 263 pixels.



Article Number: 11F662. Class: Communications. Nation: USSR. Manufacturer: NPO PM.

The geostationary Gorizont satellite was part of the Russian YeSSS Unified Satellite Communication System . These satellites provided civilian and military telephone, telegraph, and facsimile communications services, in addition to relaying TV and radio broadcasts. Gorizont also supported maritime and international communications from 1988 as an element of the Okean system operating at 1.5 to 1.6 GHz. The KAUR-3 spacecraft bus was 3-axis stabilised using liquid propellant micro-engines to within 0.25 degrees of the earth's centre. The single-unit body was equipped with solar panels, and active liquid-gas phase-change thermoregulation system, and a corrective engine unit for making orbital adjustments. 25 square metres of solar panels provided 1280 W of power. Gorizon was equipped with seven transponders.260 GHz total bandwidth.195 W total transponder power with EIRP of 28 to 38.5 dBW. Frequency bands: 6/4, 14/11, 1.6/1.5 GHz.


Specification

Design Life: 3 years. Total Mass: 2,110 kg.


Gorizont Chronology


19 December 1978 Gorizont 1 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S86. FAILURE: Block DM malfunction, wrong orbit. Mass: 2,100 kg. Perigee: 22,193 km. Apogee: 49,371 km. Inclination: 22.4 deg.

Did not achieve geostationary orbit due to malfunction of Block D. Operation of telephone and telegraph radiocommunications and transmission of television programmes.


06 July 1979 Gorizont 2 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S86. Mass: 2,100 kg. Perigee: 35,777 km. Apogee: 35,782 km. Inclination: 11.5 deg.

Stationed at 14 deg W. Statsionar 4.


28 December 1979 Gorizont 3 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S86. Mass: 2,100 kg. Perigee: 35,779 km. Apogee: 35,831 km. Inclination: 11.0 deg.

Stationed at 53 deg E.


14 June 1980 Gorizont 4 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S86. Mass: 2,100 kg. Perigee: 36,231 km. Apogee: 36,279 km. Inclination: 10.8 deg.

Stationed at 14 deg W.


15 March 1982 Gorizont 5 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S86. Mass: 2,100 kg. Perigee: 36,139 km. Apogee: 36,427 km. Inclination: 9.7 deg.

Stationed at 53 deg E. Provision of telephone and telegraph radiocommunications and transmission of television programmes.


20 October 1982 Gorizont 6 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S86. Mass: 2,100 kg. Perigee: 35,738 km. Apogee: 35,775 km. Inclination: 8.8 deg.

Stationed at 90 deg E. Provision of telephone and telegraph radiocommunications and transmission of television programmes.


01 July 1983 Gorizont 7 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S86. Mass: 2,100 kg. Perigee: 36,281 km. Apogee: 36,391 km. Inclination: 7.9 deg.

Stationed at 14 deg W. Radio telephone and telegraph communications and television broadcasting.


30 November 1983 Gorizont 8 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S86. Mass: 2,100 kg. Perigee: 36,254 km. Apogee: 36,462 km. Inclination: 7.4 deg.

Stationed at 90 deg E. Radio telephone and telegraph communications and television broadcasting.


22 April 1984 Gorizont 9 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S86. Mass: 2,100 kg. Perigee: 35,710 km. Apogee: 35,836 km. Inclination: 7.2 deg.

Stationed at 53 deg E. Provision of telephone and telegraph radiocommunications and television broadcasting.



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02 August 1984 Gorizont 10 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S86. Mass: 2,100 kg. Perigee: 35,793 km. Apogee: 35,810 km. Inclination: 6.8 deg.

Stationed at 80 deg E. Provision of telephone and telegraph radiocommunications and television broadcasting.


18 January 1985 Gorizont 11 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S86. Mass: 2,100 kg. Perigee: 35,750 km. Apogee: 35,790 km. Inclination: 6.3 deg.

Stationed at 140 deg E. Provision of telephone and telegraph radiocommunications and television broadcasting.


10 June 1986 Gorizont 12 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S86. Mass: 2,100 kg. Perigee: 35,736 km. Apogee: 35,796 km. Inclination: 5.1 deg.

Stationed at 345 deg E. Provision of telephone and telegraph radiocommunications and television broadcasting.


18 November 1986 Gorizont 13 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S86. Mass: 2,100 kg. Perigee: 36,743 km. Apogee: 36,880 km. Inclination: 4.9 deg.

Stationed at 90 deg E. Provision of telephone and telegraph radiocommunications and television broadcasting.


11 May 1987 Gorizont 14 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S86. Mass: 2,100 kg. Perigee: 36,416 km. Apogee: 36,658 km. Inclination: 6.6 deg.

Stationed at 140 deg E. Provision of telephone and telegraph radiocommunications and television broadcasting.


18 January 1988 Gorizont s/n 25L Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S861. FAILURE: Third stage malfunction. Mass: 2,100 kg.
31 March 1988 Gorizont 15 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S86. Mass: 2,100 kg. Perigee: 36,343 km. Apogee: 36,630 km. Inclination: 3.7 deg.

Stationed at 346 deg E. Radio telephone and telegraph communications and television broadcasting.


18 August 1988 Gorizont 16 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S861. Mass: 2,100 kg. Perigee: 35,816 km. Apogee: 35,919 km. Inclination: 3.2 deg.

Stationed at 80 deg E. Provision of telephone and telegraph radiocommunications and television broadcasting.


26 January 1989 Gorizont 17 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S861. Mass: 2,120 kg. Perigee: 35,783 km. Apogee: 35,788 km. Inclination: 2.8 deg.

Stationed at 53 deg E. Provision of telephone and telegraph radiocommunications and television broadcasting. Satellite sold to Rimsat Corporation in June 1993.



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06 July 1989 Gorizont 18 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S861. Mass: 2,120 kg. Perigee: 35,782 km. Apogee: 35,798 km. Inclination: 2.4 deg.

Stationed at 140 deg E. Provision of telephone and telegraph radiocommunications and television broadcasting.


28 September 1989 Gorizont 19 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S861. Mass: 2,120 kg. Perigee: 35,785 km. Apogee: 35,788 km. Inclination: 2.3 deg.

Stationed at 97.5 deg E. Operation of the long-range telephone and telegraph radio-communications system and transmission of television programmes.


21 June 1990 Gorizont 20 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S86. Mass: 2,125 kg. Perigee: 35,771 km. Apogee: 35,801 km. Inclination: 1.5 deg.

Stationed at 90 deg E. Provision of telephone and telegraph communications and transmission of television programmes, continuation of work in the context of the 'Intercosmos' programme for the development of new frequency ranges and the creation of long-range systems of space c ommunications jointly with the Byelorussian SSR, GDR, Hungary and Czechoslovakia.


03 November 1990 Gorizont 21 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S861. Mass: 2,125 kg. Perigee: 35,780 km. Apogee: 35,788 km. Inclination: 1.3 deg.

Stationed at 90 deg E. Operation of the long-range telephone and telegraph radio-communications system and transmission of television programmes.


23 November 1990 Gorizont 22 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S861. Mass: 2,125 kg. Perigee: 35,781 km. Apogee: 35,794 km. Inclination: 1.2 deg.

Stationed at 40 deg E. Operation of the long-range telephone and telegraph radio-communications system and transmission of television programmes.


02 July 1991 Gorizont 23 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S861. Mass: 2,125 kg. Perigee: 36,148 km. Apogee: 36,198 km. Inclination: 0.5 deg.

Stationed at 103 deg E. Maintenance of telephone and telegraph radio communications and transmission of television broadcasts.


23 October 1991 Gorizont 24 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S861. Mass: 2,125 kg. Perigee: 35,771 km. Apogee: 35,802 km. Inclination: 0.3 deg.

Stationed at 80 deg E. Maintenance of telephone and telegraph radio communications and transmission of television broadcasts.


02 April 1992 Gorizont 25 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S861. Mass: 2,125 kg. Perigee: 35,783 km. Apogee: 35,787 km. Inclination: 0.2 deg.

Stationed at 103 deg E. Transmission of Russian radio and television programmes in Siberia and the solution of communications problems in Russia's eastern regions.


15 July 1992 Gorizont 26 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S861. Mass: 2,125 kg. Perigee: 35,777 km. Apogee: 35,799 km. Inclination: 0.5 deg.

Stationed at 349 deg E. Development of the communications and television broadcasting system. Launched in the interests of the Ministry of Communications of the Russian Federation.


27 November 1992 Gorizont 27 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S861. Mass: 2,125 kg. Perigee: 35,774 km. Apogee: 35,794 km. Inclination: 0.6 deg.

Stationed at 53 deg E. Development of the communications and television broadcasting system.


27 May 1993 Gorizont s/n 39L Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S861. FAILURE: Second stage did not reach planned velocity. Cause determined to be propellant contamination. Mass: 2,125 kg.
28 October 1993 Gorizont 28 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S861. Mass: 2,125 kg. Perigee: 35,752 km. Apogee: 35,789 km. Inclination: 1.5 deg.

Stationed at 90 deg E. Development of the communications and television broadcasting system.


18 November 1993 Gorizont 29 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S861. Mass: 2,125 kg. Perigee: 35,554 km. Apogee: 35,872 km. Inclination: 1.5 deg.

Stationed at 130 deg E. 'Rimsat-1' - leased to Rimsat Corp. Communications satellite. Intended for use under commercial conditions.


20 May 1994 Gorizont 30 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S861. Mass: 2,125 kg. Perigee: 34,732 km. Apogee: 35,023 km. Inclination: 1.4 deg.

Stationed at 142.5 deg E. 'Rimsat-2' - Leased to Rimsat Corp. Communications satellite. Intended for use under commercial conditions.


25 January 1996 Gorizont 31 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S861. Mass: 2,125 kg. Perigee: 35,777 km. Apogee: 35,801 km. Inclination: 0.9 deg.

Stationed at 39.8E.


25 May 1996 Gorizont 32 Launch Site: Baikonur . Launch Vehicle: Proton 8K82K / 11S861. Mass: 2,125 kg. Perigee: 35,718 km. Apogee: 35,851 km. Inclination: 1.1 deg.

Stationed at 53.2E.


06 June 2000 Gorizont Launch Site: Baikonur . Launch Vehicle: Proton 8K82KM. Perigee: 35,777 km. Apogee: 35,796 km. Inclination: 1.0 deg.

First successful Proton/Briz-M launch. The Proton placed the Briz-M/Gorizont payload stack into a suborbital trajectory. The stage then performed four maneuvers to put the satellite into geosynchronous orbit:


Gorizont No. 45L was expected to be the final launch of that model of television broadcasting satellite. It carried 6 C-band transponders, one L-band, and one Ku-band transponder. The newer Ekspress satellites are replacing the system. Stationed at 145 deg E.

Bibliography:



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Last update 12 March 2001.
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