1990-054A
The 20th Gorizont in orbit (11F662 No. 30) was launched on 1990 Jun 20. In addition to the usual C-band payload it carried a Mayak transponder for Interkosmos communications in a new frequency band. The launch saw the final use of the 11S86 Blok-DM upper stage, now phased out in favour of the 11S861 Blok-DM2.
| Gorizont No. 30L | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1990 Jun 20 | 2336:00 | Launch by Proton-K | KB |
| 2345 | Stage 3 sep | ||
| 1990 Jun 21 | 0053? | DM burn 1 | |
| 0609? | DM burn 2 | ||
| 1990 Jun 21 | 0613? | Blok-DM No. 67L sep | |
| 1990 Jun 21 | 1435.42 35708 x 35838 x 1.6 GEO 90.6E+0.16E | ||
| 1990 Jun 23 | 1436.24 35717 x 35860 x 1.5 GEO 90.7E | ||
| 1990 Nov 27 | 1436.23 35727 x 35851 x 1.1 GEO 89.8E | ||
| 1990 Dec | mv out | ||
| 1990 Dec 11 | mv in | 1436.04 35759 x 35811 x 1.1 GEO 14.3W | |
| 1991 Jan 3 | 1436.04 35759 x 35811 x 1.0 GEO 14.0W | ||
| 1992 Jan 9 | 1436.10 35763 x 35809 x 0.1 GEO 14.2W | ||
| 1992 Oct 3 | 1436.08 35776 x 35796 x 0.5 GEO 14.0W | ||
| 1994 Feb 3 | 1436.08 35767 x 35805 x 1.6 GEO 14.2W | ||
| 1994 Sep 14 | 1436.10 35767 x 35806 x 2.1 GEO 14.3W | ||
| 1995 Mar 30 | 1436.08 35771 x 35800 x 2.4 GEO 14.1W | ||
| 1995 Mar 31? | mv out | ||
| 1995 Apr 4 | 1433.89 35696 x 35790 x 2.6 GEO 11.4W+0.5E | ||
| 1995 Jun 9 | 1435.99 35776 x 35792 x 2.7 GEO 26.5E | ||
| 1995 Sep 15 | 1436.12 35783 x 35791 x 2.9 GEO 25.4E | ||
| 1997 Jan 28 | 1436.10 35778 x 35795 x 3.9 GEO 25.8E | ||
| 1998 Feb 12 | 1436.09 35589 x 35982 x 4.6 GEO 25.6E | ||
| 1998 May 1 | mv out | 1435.92 35778 x 35787 x 4.7 GEO 26.3E | |
| 1998 May 3 | 1434.11 35717 x 35778 x 4.7 | ||
| 1998 Sep 7 | mv in | 1435.81 35705 x 35778 x 4.9 GEO 96.4E | |
| 1998 Jul 25 | 1436.07 35784 x 35787 x 5.0 GEO 96.7E | ||
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