Retired· Progress Rocket Space Center

Soyuz STB Fregat

1b version adds an upgraded engine (RD-0124) with improved performance to the second stage. First launch took place from Plesetsk Cosmodrome Site 43 on 26 July 2008 with a classified military payload.

Follow Soyuz STB in the app

Launches

since Oct 2011

Success rate

92.8%

13 of 14 successful

In a row

successful launches

Launches per Year

Full year2026 so far

Specifications

Height: 46.3 m
Diameter: 2.95 m
Liftoff mass: 312 t
To low Earth orbit: 8,200 kg
To geostationary transfer: 3,250 kg
Stages: 3
First flight: October 21, 2011
Manufacturer: Progress Rocket Space Center

Next Launches

No Upcoming Launches

No launch is scheduled for this vehicle right now.

Space Launch Now for iOS and Android

Follow Soyuz STB and get a notification before each of its launches.

See what's in the app

Scan to open on your phone

[data-page-skeleton]{display:none}body{display:flex;flex-direction:column}body>footer{order:2}body>main{padding-bottom:0}body:has(>div[hidden][id^="S:"]>[data-data-unavailable]) header[data-site-header]{background:var(--canvas);border-color:var(--rule);color:var(--ink)}body:has(>div[hidden][id^="S:"]>[data-data-unavailable]) [data-header-scrim]{display:none}body>div[hidden][id^="S:"]>[data-data-unavailable]{max-width:calc(var(--container-content) + 2 * var(--s-5));padding:var(--s-9) var(--s-5) 0}body>div[hidden][id^="S:"]:last-of-type{padding-bottom:var(--s-9)}body:has(>div[id^="S:"] [data-app-promo])>div[hidden][id^="S:"]:last-of-type{padding-bottom:0}@layer base{body>div[hidden][id^="S:"]{display:block!important;order:1}}