Space Launch CalendarDOS 4 (17K No. 124) on Proton-K, 1974-12-26 (Success)
ResultSuccess
Date1974-12-26 04:15 UTC
VehicleProton-KProton-K
Proton-K flight no.7success rate so far 86%
No. in 1974108 / 110orbital attempts
Agency countrySoviet UnionRVSN
| Item | Value |
|---|---|
| Launch site | NIIP-5, Baykonur, Kazakstan |
| Payload | DOS 4 (17K No. 124) |
| GCAT launch tag | 1974-104 |
| Mass to orbit | 18.5 t |
Neighbouring Proton-K launches
| Date | Payload | Vehicle | Site | Result |
|---|---|---|---|---|
| 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 |
| 1976-06-22 | Almaz OPS 3 | Proton-K | NIIP-5 | Success |
| 1976-12-15 | TKS VA No. 009A/1 | Proton-K | NIIP-5 | Success |
| 1977-07-17 | TKS No. 16101 | Proton-K | NIIP-5 | Success |
| 1977-08-04 | TKS VA No. 009A/P | Proton-K | NIIP-5 | Failure |
| 1977-09-29 | DOS 5 | 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.