1969-033A
The 20th DS-P1-Yu was a standard Subgroup 1 mission.
| Kosmos-277 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1969 Apr 4 | 1300 | Launch by 11K63 | GTsP4 |
| 1302 | Stage 2 burn | ||
| 1307? | Stage 2 sep | ||
| 1969 Apr 6 | 0500? | 91.90 268 x 466 x 70.95 | |
| 1969 May 18 | 0516? | Stage 2 reentered | |
| 1969 Jun 10 | End of operations | ||
| 1969 Jul 6 | 0238? | Reentered | |
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