1977-092A
The second Ekran (Ekran No. 12L) was launched on 1977 Sep 20 by Proton-K from Baykonur. The spacecraft was stationed at 99E but on 1978 Jun 23 its nickel-hydrogen battery exploded, distributing numerous fragments in the geostationary ring. The spacecraft was able to operate through 1980 via its solar panels and backup battery.
| Ekran No. 12L | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1977 Sep 20 | 1728 | Launch by Proton-K | KB |
| 1737 | Stage 3 sep | ||
| 1845? | DM burn 1 | ||
| 1977 Sep 21 | 0001? | DM burn 2 | |
| 0005? | DM sep | ||
| 1977 Sep 21 | 1426.66 35580 x 35622 x 0.4 GEO 92.2E+2.4E | ||
| 1977 Sep 28 | 1435.99 35766 x 35802 x 0.4 GEO 98.7E | ||
| 1977 Dec 24 | 1435.93 35696 x 35870 x 0.2 GEO 99.0E | ||
| 1978 Jun 23 | NH2 battery explosion | ||
| 1978 Jul 8 | 1436.24 35744 x 35834 x 0.2 GEO 98.8E | ||
| 1978 Oct 3 | 1436.53 35678 x 35911 x 0.3 GEO 95.6E+0.1W | ||
| 1979 Jan | 1436.9 | ||
| 1979 Jun | GEO 54E | ||
| 1979 Jul | GEO 2W | ||
| 1980 Jul 6 | GEO | ||
| 1982 Dec 29 | 1436.44 35664 x 35922 x 3.6 GEO 97.2E+0.09W | ||
| 1985 Feb 6 | 1436.84 35653 x 35948 x 11.3 GEO 66.9E+0.2W | ||
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