Russian Space ForcesSoyuz 2.1b Fregat43/3 (43L), Plesetsk Cosmodrome, Russian Federation
Glonass-K1 No. 18 (Kosmos 2595) & Kosmos 2596
Launched
September 13, 2025 · 02:10 UTC
Image: Roscosmos
Summary
Glonass-K1 No. 18 (Kosmos 2595) & Kosmos 2596 launched on a Russian Space Forces Soyuz 2.1b Fregat from 43/3 (43L), Plesetsk Cosmodrome, Russian Federation on September 13, 2025 at 02:10 UTC. The launch window ran from 02:10 to 03:30 UTC. It was Russian Space Forces's 151st launch, 7th this year and humanity's 7,061st orbital launch attempt. It was the 25th Soyuz 2.1b Fregat flight and the 1st this year. The payload was bound for Medium Earth Orbit (MEO). Kosmos-2596, one of 3 catalogued objects, reached a 19,154 × 19,160 km orbit inclined 64.8°. 3 objects from this launch are catalogued, 2 of them payloads.
- Watch
- No webcast on record.
- Vehicle
- Soyuz 2.1b Fregat · Russian Space Forces
- Booster
- No booster details on record.
- Mission
- Navigation · Medium Earth Orbit (MEO)for VKS
- Milestone
- 25th Soyuz 2.1b Fregat flight · 1st this yearRussian Space Forces's 151st launch7th this yearhumanity's 7,061st orbital launch attempt212th orbital launch attempt this year
Flight preview
Orbit: as tracked
Kosmos-2596 · NORAD 65589 · 2025-206 · Space-Track · tracking 1 of 3 objects
Show the numbers for orbit elements
- Object
- OBJECT A
- Object ID
- 2025-206A
- Epoch
- 2025-09-13 03:47:19 UTC
- Mean motion
- 2.1285192 rev/day
- Eccentricity
- 0.00010162
- Inclination
- 64.7936°
- Ascending node
- 324.6263°
- Arg. of perigee
- 358.5915°
- Mean anomaly
- 1.4736°
- Element set
- 999
- Rev at epoch
- 1
- B*
- 0
Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: MEO. Ascent drawn from padside's representative profile.
Catalogued objects
3 catalogued: 2 payloads, 1 rocket stage; 3 still in orbit
- Kosmos-2596 · NORAD 65589 · in orbit
- Kosmos-2595 · NORAD 65590 · in orbit
Fregat No. 112-22 · in orbit
Data from J. McDowell, planet4589.org
About this launch
Glonass-K1 are the third generation of satellite design for GLONASS satellite navigation system. GLONASS is a Russian space-based navigation system comparable to the similar GPS and Galileo systems. This generation improves on accuracy, power consumption and design life. Each satellite is unpressurized and weighs 935 kg, and has an operational lifetime of 10 years. This launch also carries Mozhayets-6 (Kosmos 2596), a small experimental satellite built by the Mozhaiskiy Military Space Academy of St. Petersburg.
Pad
43/3 (43L), Plesetsk Cosmodrome, Russian Federation
231st launch from 43/3 (43L), 2nd this year · 1,678th from Plesetsk Cosmodrome, Russian Federation
Local pad time at liftoff: Sep 13, 5:10 AM GMT+3, in twilight
234 launches from this pad · 1,688 from Plesetsk Cosmodrome, Russian Federation
194 days after the previous launch from this pad
All launches from Plesetsk Cosmodrome, Russian FederationOpen in maps
Updates
Questions
When did Glonass-K1 No. 18 (Kosmos 2595) & Kosmos 2596 launch?
Glonass-K1 No. 18 (Kosmos 2595) & Kosmos 2596 launched on September 13, 2025 at 02:10 UTC. The launch window ran from 02:10 to 03:30 UTC.
Where can I watch Glonass-K1 No. 18 (Kosmos 2595) & Kosmos 2596?
No webcast is on record for this launch.
What rocket launched Glonass-K1 No. 18 (Kosmos 2595) & Kosmos 2596?
Soyuz 2.1b Fregat, flown by Russian Space Forces. Soyuz 2.1b Fregat spec sheet
Where did Glonass-K1 No. 18 (Kosmos 2595) & Kosmos 2596 launch from?
43/3 (43L), Plesetsk Cosmodrome, Russian Federation. Liftoff was Sep 13, 5:10 AM GMT+3 local time at the pad.
What orbit did Glonass-K1 No. 18 (Kosmos 2595) & Kosmos 2596 reach?
Kosmos-2596, one of 3 catalogued objects, reached a 19,154 × 19,160 km orbit inclined 64.8°.
How many satellites did Glonass-K1 No. 18 (Kosmos 2595) & Kosmos 2596 launch?
2 payloads from this launch are catalogued, 2 of them still in orbit (Data from J. McDowell, planet4589.org).