# Roscosmos Soyuz 2
*launch services*

Active Russian Soyuz-2 medium-lift launch vehicle family built by RKTs Progress and used by Roscosmos for LEO, SSO, high-energy, and ISS logistics missions.

## Specifications
- **merge suggestions**: [{"slug":"roscosmos-kosmos-3m","name":"Roscosmos Kosmos 3m","score":0.631578947368421,"matchedOn":"slug","matchedValue":"roscosmos-kosmos-3m"}]
- **vehicle family**: Soyuz-2.1a / Soyuz-2.1b
- **payload to leo kg**: 8320
- **payload to sso kg**: 6950
- **entity type**: launch_service
- **last verified date**: 2026-06-16
- **verified by**: operator
- **claim status**: unclaimed
- **provider**: roscosmos
- **attributes**: {"merge_suggestions":"[{\"slug\":\"roscosmos-kosmos-3m\",\"name\":\"Roscosmos Kosmos 3m\",\"score\":0.631578947368421,\"matchedOn\":\"slug\",\"matchedValue\":\"roscosmos-kosmos-3m\"}]","vehicle_family":"Soyuz-2.1a / Soyuz-2.1b","payload_to_leo_kg":8320,"payload_to_sso_kg":6950,"description":"Active Russian Soyuz-2 medium-lift launch vehicle family built by RKTs Progress and used by Roscosmos for LEO, SSO, high-energy, and ISS logistics missions."}

## Editorial
Roscosmos Soyuz-2 is an active Russian medium-lift expendable launch vehicle family built by RKTs Progress. It is used with Fregat or Volga upper stages for LEO, MEO, high-elliptical, SSO, GTO, and geostationary missions.[^progress-soyuz-2]

The family includes Soyuz-2.1a and Soyuz-2.1b; 2.1b adds a higher-performance third-stage engine and support for larger fairings.[^progress-soyuz-2] Roscosmos provides Russian Soyuz-2 launch services, and RKTs Progress is the vehicle manufacturer and developer.[^progress-soyuz-2][^progress-history]

Published Phase 1B lift capability reaches 8,320 kg to a 200 km, 51.7 degree orbit from Vostochny and about 8,200 kg to a 200 km, 51.8 degree orbit from Baikonur.[^progress-soyuz-2] For sun-synchronous reference missions, listed capability is 6,950 kg to 200 km at 98.0 degrees from Vostochny and 6,900 kg to 200 km at 98.3 degrees from Plesetsk.[^progress-soyuz-2]

Soyuz-2.1a first test launched on 2004-11-08, Soyuz-2.1a commercial service began in 2006, and Soyuz-2.1b flight testing began on 2006-12-27. The family remained operational in 2026.[^progress-soyuz-2][^russian-spaceweb-soyuz-2026]

## Sources
- [progress-soyuz-2] | SOYUZ-2 Launch Vehicle, JSC SRC Progress | https://en.samspace.ru/products/launch_vehicles/rn_soyuz_2/ | tier=operator-engineering | accessed=2026-06-16
- [progress-history] | History of JSC SRC Progress | https://en.samspace.ru/about/history/ | tier=operator-marketing | accessed=2026-06-16
- [russian-spaceweb-soyuz-2026] | Soyuz rocket launches a military payload, RussianSpaceWeb | https://www.russianspaceweb.com/spacecraft-military-soyuz2-volga-2026-0417.html | tier=community | accessed=2026-06-16 | published=2026-04-17

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Source: https://eo-atlas.org/launch_services/roscosmos-soyuz-2
Maintainer: SpectraWorks B.V. (CC-BY 4.0)