Back to Resources

Proton-K/Blok D 261-01

Proton-K/Blok D 261-01 was the individual four-stage flight article launched from Baikonur on 1973-07-21 carrying Mars 4. The launch vehicle completed its ascent and upper-stage injection successfully.

Identity

Aliases
Mars 4 launch vehicle8K82K 261-01 Proton
Name
Proton-K/Blok D 261-01
Slug
proton-k-blok-d-261-01
Status
retired

Details

Description
Proton-K/Blok D 261-01 was the individual four-stage flight article launched from Baikonur on 1973-07-21 carrying Mars 4. The launch vehicle completed its ascent and upper-stage injection successfully.
Operator
Vehicle Family

Links

Assets & Meta

Creation Time
July 18, 2026 at 19:16:21 UTC
Updated Time
July 18, 2026 at 19:16:21 UTC

Other

First Flight Date
1973-07-21
Last Flight Date
1973-07-21
Serial Number
261-01
Vehicle Code
8K82K 261-01