Russian Space ForcesAngara 1.235/1, Plesetsk Cosmodrome, Russian Federation

Kosmos 2577 & 2578

Name: Kosmos 2577 & 2578 launch
Start: 2024-09-17T07:01:00.000Z
End: 2024-09-17T09:00:00.000Z
Location: 35/1, Plesetsk Cosmodrome, Russian Federation

Launched

September 17, 2024 · 07:01 UTC

Launch Successful

Summary

Kosmos 2577 & 2578 launched on a Russian Space Forces Angara 1.2 from 35/1, Plesetsk Cosmodrome, Russian Federation on September 17, 2024 at 07:01 UTC. The launch window ran from 07:00 to 09:00 UTC. It was Russian Space Forces's 142nd launch, 3rd this year and humanity's 6,759th orbital launch attempt. It was the 3rd Angara 1.2 flight and the 1st this year. The payload was bound for Sun-Synchronous Orbit (SSO). Kosmos-2577, one of 2 catalogued objects, reached a 335 × 351 km orbit inclined 96.8°. 2 objects from this launch are catalogued, all of them payloads.

Watch: Khrunichev State Research and Production Space Center Kosmos 2577 & 2578The Space Devs
Vehicle: Angara 1.2 · Russian Space Forces
Booster: No booster details on record.
Mission: Government/Top Secret · Sun-Synchronous Orbit (SSO)
Milestone: 3rd Angara 1.2 flight · 1st this yearRussian Space Forces's 142nd launch3rd this yearhumanity's 6,759th orbital launch attempt170th orbital launch attempt this year

Flight preview

Orbit: as tracked

96.8°Inclination

335 × 351 kmPerigee × apogeefrom mean elements

91.3 minPeriodfrom mean elements

157.0°Ascending node

758 d agoElement epoch2024-09-17 13:16 UTC · stale

Kosmos-2577 · NORAD 61179 · 2024-166 · Space-Track · tracking 1 of 2 objects

Show the numbers

Object: TBA - TO BE ASSIGNED
Object ID: 2024-166A
Epoch: 2024-09-17 13:16:37 UTC
Mean motion: 15.78006252 rev/day
Eccentricity: 0.0011536
Inclination: 96.7682°
Ascending node: 156.9699°
Arg. of perigee: 242.4462°
Mean anomaly: 205.9222°
Element set: 999
Rev at epoch: 4
B*: 0

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

Catalogued objects

2 catalogued: 2 payloads; 1 still in orbit

Kosmos-2577 · NORAD 61179 · re-entered February 26, 2025
Kosmos-2578 · NORAD 61180 · in orbit

Data from J. McDowell, planet4589.org

About this launch

2 Russian military satellites of unknown identities.

Pad

35/1, Plesetsk Cosmodrome, Russian Federation

7th launch from 35/1, 1st this year · 1,669th from Plesetsk Cosmodrome, Russian Federation

Local pad time at liftoff: Sep 17, 10:01 AM GMT+3, in daylight

12 launches from this pad · 1,688 from Plesetsk Cosmodrome, Russian Federation

702 days after the previous launch from this pad

All launches from Plesetsk Cosmodrome, Russian Federation Open in maps

Updates

Launch successful.

Cosmic_Penguin · Sep 17, 2024 · source

Show 2 earlier updates

Liftoff confirmed.
Cosmic_Penguin · 9/17/2024 · source
Added launch per air and marine navigation warnings; Payload identity highly uncertain.
Cosmic_Penguin · 9/13/2024 · source

Questions

When did Kosmos 2577 & 2578 launch?

Kosmos 2577 & 2578 launched on September 17, 2024 at 07:01 UTC. The launch window ran from 07:00 to 09:00 UTC.

Where can I watch Kosmos 2577 & 2578?

Coverage: Khrunichev State Research and Production Space Center Kosmos 2577 & 2578. Watch the replay

What rocket launched Kosmos 2577 & 2578?

Angara 1.2, flown by Russian Space Forces. Angara 1.2 spec sheet

Where did Kosmos 2577 & 2578 launch from?

35/1, Plesetsk Cosmodrome, Russian Federation. Liftoff was Sep 17, 10:01 AM GMT+3 local time at the pad.

What orbit did Kosmos 2577 & 2578 reach?

Kosmos-2577, one of 2 catalogued objects, reached a 335 × 351 km orbit inclined 96.8°.

How many satellites did Kosmos 2577 & 2578 launch?

2 payloads from this launch are catalogued, 1 of them still in orbit (Data from J. McDowell, planet4589.org).