Space Launch CalendarDOS-1 17K No. 121 on Proton-K, 1971-04-19 (Success)
ResultSuccess
Date1971-04-19 01:40 UTC
VehicleProton-KProton-K
Proton-K flight no.2success rate so far 100%
No. in 197134 / 126orbital attempts
Agency countrySoviet UnionRVSN
| Item | Value |
|---|---|
| Launch site | NIIP-5, Baykonur, Kazakstan |
| Payload | DOS-1 17K No. 121 |
| GCAT launch tag | 1971-032 |
| Mass to orbit | 18.2 t |
Neighbouring Proton-K launches
| Date | Payload | Vehicle | Site | Result |
|---|---|---|---|---|
| 1968-11-16 | N-6 No. 1 | Proton-K | NIIP-5 | Success |
| 1971-04-19 | DOS-1 17K No. 121 | Proton-K | NIIP-5 | Success |
| 1972-07-29 | DOS 2 (17K No. 122) | Proton-K | NIIP-5 | Failure |
| 1973-04-03 | Almaz OPS 1 | Proton-K | NIIP-5 | Success |
| 1973-05-11 | DOS 3 | Proton-K | NIIP-5 | Success |
| 1974-06-24 | Almaz 2 (11F71 No. 101-2 | Proton-K | NIIP-5 | Success |
| 1974-12-26 | DOS 4 (17K No. 124) | Proton-K | NIIP-5 | Success |
Proton-K launches per year
Counts orbital launch attempts (successes and failures); suborbital flights excluded. Countries are those of the launching agency.