Soyuz STB Fregat

Soyuz family · built by Progress Rocket Space Center · maiden flight 2011-10-21

Profile data last updated: 2026-08-15T20:08:04.839063+00:00 | 7531-09-01

The 2.1b 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. The 2.1b/ST version is sometimes called Soyuz ST-B.

Specifications

46.3 mLength

2.95 mDiameter

312 tLaunch mass

3Stages

Payload Capacity

8200 kgTo LEO

3250 kgTo GTO

Lifetime Launch Record

As reported by Launch Library 2 across this rocket's entire history, not just the launches tracked on this site.

14Total launches

13Successful

1Failed

0Upcoming

Launches Tracked on This Site

14In our archive

92.9%Success rate

Oct 21, 2011 10:30 UTCEarliest tracked

Feb 10, 2022 18:09 UTCMost recent

Mission	Date	Status
Soyuz STB/Fregat \| OneWeb 13	Feb 10, 2022 18:09 UTC	Success
Soyuz STB/Fregat \| Galileo L11 (FOC FM23-FM24)	Dec 05, 2021 00:19 UTC	Success
Soyuz STB/Fregat \| CSG-1, CHEOPS, & others	Dec 18, 2019 08:54 UTC	Success
Soyuz STB/Fregat \| O3b FM17-20	Apr 04, 2019 17:03 UTC	Success
Soyuz STB/Fregat \| OneWeb 1 (F6)	Feb 27, 2019 21:37 UTC	Success
Soyuz STB/Fregat \| O3b FM13-16	Mar 09, 2018 17:10 UTC	Success
Soyuz STB/Fregat \| Galileo L7 (FOC FM10-FM11)	May 24, 2016 08:48 UTC	Success
Soyuz STB/Fregat \| Galileo L6 (FOC FM08-FM09)	Dec 17, 2015 11:51 UTC	Success
Soyuz STB/Fregat \| Galileo L5 (FOC FM05-FM06)	Sep 11, 2015 02:08 UTC	Success
Soyuz STB/Fregat \| Galileo L4 (FOC FM03-FM04)	Mar 27, 2015 21:46 UTC	Success
Soyuz STB/Fregat \| O3b FM9-FM12	Dec 18, 2014 18:37 UTC	Success
Soyuz STB/Fregat \| Galileo L3 (FOC FM01-FM02)	Aug 22, 2014 12:27 UTC	Partial Failure
Soyuz STB/Fregat \| O3b FM3, FM6-FM8	Jul 10, 2014 18:55 UTC	Success
Soyuz STB/Fregat \| Galileo L1 (IOV FM01-FM02)	Oct 21, 2011 10:30 UTC	Success

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