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Russian Federal Space Agency (ROSCOSMOS)Soyuz 2.1b31/6, Baikonur Cosmodrome, Republic of Kazakhstan

Bion-M No. 2

Launched

August 20, 2025 · 17:13 UTC

Launch Successful

Image: Roscosmos

Summary

Bion-M No. 2 launched on a Russian Federal Space Agency (ROSCOSMOS) Soyuz 2.1b from 31/6, Baikonur Cosmodrome, Republic of Kazakhstan on August 20, 2025 at 17:13 UTC. It was Russian Federal Space Agency (ROSCOSMOS)'s 334th launch, 5th this year and humanity's 7,036th orbital launch attempt. It was the 22nd Soyuz 2.1b flight and the 1st this year. The payload was bound for low Earth orbit (LEO). Bion-M No. 2, one of 2 catalogued objects, reached a 197 × 353 km orbit inclined 96.9°. 2 objects from this launch are catalogued, one of them a payload.

Watch
Vehicle
Soyuz 2.1b · Russian Federal Space Agency (ROSCOSMOS)
Booster
No booster details on record.
Mission
Biology · Low Earth Orbit (LEO)
Milestone
22nd Soyuz 2.1b flight · 1st this yearRussian Federal Space Agency (ROSCOSMOS)'s 334th launch5th this yearhumanity's 7,036th orbital launch attempt187th orbital launch attempt this year

Webcast

Replay
Watch on YouTube

Flight preview

Orbit: as tracked

96.9°Inclination
197 × 353 kmPerigee × apogeefrom mean elements
89.9 minPeriodfrom mean elements
300.5°Ascending node
421 d agoElement epoch2025-08-20 18:37 UTC · stale

Bion-M No. 2 · NORAD 65265 · 2025-181 · Space-Track · tracking 1 of 2 objects

Show the numbers for orbit elements
Object
TBA - TO BE ASSIGNED
Object ID
2025-181A
Epoch
2025-08-20 18:37:04 UTC
Mean motion
16.02305022 rev/day
Eccentricity
0.01172627
Inclination
96.9342°
Ascending node
300.5371°
Arg. of perigee
57.9268°
Mean anomaly
303.3334°
Element set
999
Rev at epoch
1
B*
0.00024474891

Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: LEO. Ascent drawn from padside's representative profile.

Catalogued objects

2 catalogued: 1 payload, 1 rocket stage; none still in orbit

  • Bion-M No. 2 · NORAD 65265 · landed September 19, 2025

Soyuz-2-1a No. 059 Blok-I · re-entered August 31, 2025

Data from J. McDowell, planet4589.org

About this launch

Bion-M is the next generation of Russian biological research satellites. While retaining the Vostok/Zenit-derived reentry module of the earlier Bion, the propulsion module has been replace by a Yantar type module, which provides maneuvering capabilities and longer mission support. The mission duration has been increased to up to 6 months by using solar cells for energy generation. The weight of scientific equipment has been increased by 100 kilograms.

Pad

Map of 31/6

31/6, Baikonur Cosmodrome, Republic of Kazakhstan

424th launch from 31/6, 4th this year · 1,557th from Baikonur Cosmodrome, Republic of Kazakhstan

Local pad time at liftoff: Aug 20, 10:13 PM GMT+5, at night

430 launches from this pad · 1,565 from Baikonur Cosmodrome, Republic of Kazakhstan

47 days after the previous launch from this pad

All launches from Baikonur Cosmodrome, Republic of KazakhstanOpen in maps

Updates

Launch success.

Cosmic_Penguin · Aug 20, 2025 · source

Show 9 earlier updates

  • Spacecraft separation.

    Cosmic_Penguin · 8/20/2025 · source

  • Liftoff.

    Cosmic_Penguin · 8/20/2025 · source

  • Official Webcast by Роскосмос ТВ has started

    LL2 · 8/20/2025 · source

  • Tweaked T-0.

    Cosmic_Penguin · 8/19/2025 · source

  • Setting GO.

    Cosmic_Penguin · 8/12/2025 · source

  • NET August 20.

    Cosmic_Penguin · 7/11/2025 · source

  • NET August 25.

    Cosmic_Penguin · 6/10/2025 · source

  • Added launch time.

    Cosmic_Penguin · 5/14/2025 · source

  • NET July 20.

    Cosmic_Penguin · 5/8/2025 · source

Questions

When did Bion-M No. 2 launch?

Bion-M No. 2 launched on August 20, 2025 at 17:13 UTC.

Where can I watch Bion-M No. 2?

Coverage: Трансляция запуска спутника «Бион-М» № 2. Watch the replay

What rocket launched Bion-M No. 2?

Soyuz 2.1b, flown by Russian Federal Space Agency (ROSCOSMOS). Soyuz 2.1b spec sheet

Where did Bion-M No. 2 launch from?

31/6, Baikonur Cosmodrome, Republic of Kazakhstan. Liftoff was Aug 20, 10:13 PM GMT+5 local time at the pad.

What orbit did Bion-M No. 2 reach?

Bion-M No. 2, one of 2 catalogued objects, reached a 197 × 353 km orbit inclined 96.9°.

How many satellites did Bion-M No. 2 launch?

1 payload from this launch is catalogued, no longer in orbit (Data from J. McDowell, planet4589.org).