Russian Space ForcesSoyuz 2.1b Fregat43/4 (43R), Plesetsk Cosmodrome, Russian Federation
EKS 4 (Tundra 4) (Kosmos 2546)
Launched
May 22, 2020
Image: Roscosmos
Summary
EKS 4 (Tundra 4) (Kosmos 2546) launched on a Russian Space Forces Soyuz 2.1b Fregat from 43/4 (43R), Plesetsk Cosmodrome, Russian Federation on May 22, 2020. It was Russian Space Forces's 112th launch, 3rd this year and humanity's 5,956th orbital launch attempt. It was the 19th Soyuz 2.1b Fregat flight and the 1st this year. The payload was bound for Medium Earth Orbit (MEO). Kosmos-2546, one of 2 catalogued objects, reached a 1,663 × 38,515 km orbit inclined 63.8°. 2 objects from this launch are catalogued, one of them a payload.
- Watch
- Запуск ракеты-носителя «Союз-2» с космодрома ПлесецкМинобороны России
- Vehicle
- Soyuz 2.1b Fregat · Russian Space Forces
- Booster
- No booster details on record.
- Mission
- Government/Top Secret · Medium Earth Orbit (MEO)
- Milestone
- 19th Soyuz 2.1b Fregat flight · 1st this yearRussian Space Forces's 112th launch3rd this yearhumanity's 5,956th orbital launch attempt34th orbital launch attempt this year
Flight preview
Orbit: as tracked
Kosmos-2546 · NORAD 45608 · 2020-031 · Space-Track · tracking 1 of 2 objects
Show the numbers for orbit elements
- Object
- TBA - TO BE ASSIGNED
- Object ID
- 2020-031A
- Epoch
- 2020-05-22 14:38:45 UTC
- Mean motion
- 2.01704385 rev/day
- Eccentricity
- 0.6963778
- Inclination
- 63.8184°
- Ascending node
- 303.298°
- Arg. of perigee
- 269.9765°
- Mean anomaly
- 194.3592°
- Element set
- 999
- Rev at epoch
- 0
- 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
2 catalogued: 1 payload, 1 rocket stage; 2 still in orbit
- Kosmos-2546 · NORAD 45608 · in orbit
Fregat No. 111-304? · in orbit
Data from J. McDowell, planet4589.org
About this launch
The Tundra or EKS (meaning Unified Space System) series of satellites is the next generation of Russian early warning satellites.
Pad
43/4 (43R), Plesetsk Cosmodrome, Russian Federation
301st launch from 43/4 (43R), 2nd this year · 1,637th from Plesetsk Cosmodrome, Russian Federation
329 launches from this pad · 1,688 from Plesetsk Cosmodrome, Russian Federation
66 days after the previous launch from this pad
All launches from Plesetsk Cosmodrome, Russian FederationOpen in maps
Questions
When did EKS 4 (Tundra 4) (Kosmos 2546) launch?
EKS 4 (Tundra 4) (Kosmos 2546) launched on May 22, 2020. The time is known to the hour, not the minute.
Where can I watch EKS 4 (Tundra 4) (Kosmos 2546)?
Coverage: Запуск ракеты-носителя «Союз-2» с космодрома Плесецк. Watch the replay
What rocket launched EKS 4 (Tundra 4) (Kosmos 2546)?
Soyuz 2.1b Fregat, flown by Russian Space Forces. Soyuz 2.1b Fregat spec sheet
Where did EKS 4 (Tundra 4) (Kosmos 2546) launch from?
43/4 (43R), Plesetsk Cosmodrome, Russian Federation.
What orbit did EKS 4 (Tundra 4) (Kosmos 2546) reach?
Kosmos-2546, one of 2 catalogued objects, reached a 1,663 × 38,515 km orbit inclined 63.8°.
How many satellites did EKS 4 (Tundra 4) (Kosmos 2546) launch?
1 payload from this launch is catalogued, still in orbit (Data from J. McDowell, planet4589.org).