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Russian Space ForcesSoyuz 2.1b43/4 (43R), Plesetsk Cosmodrome, Russian Federation

Lotos-S1

Launched

February 2, 2021

Launch Successful

Image: Roscosmos

Summary

Lotos-S1 launched on a Russian Space Forces Soyuz 2.1b from 43/4 (43R), Plesetsk Cosmodrome, Russian Federation on February 2, 2021. It was Russian Space Forces's 116th launch, 1st this year and humanity's 6,046th orbital launch attempt. It was the 10th Soyuz 2.1b flight and the 1st this year. The payload was bound for low Earth orbit (LEO). Kosmos-2549, one of 2 catalogued objects, reached a 247 × 906 km orbit inclined 67.1°. 2 objects from this launch are catalogued, one of them a payload.

Watch
No webcast on record.
Vehicle
Soyuz 2.1b · Russian Space Forces
Booster
No booster details on record.
Mission
Government/Top Secret · Low Earth Orbit (LEO)
Milestone
10th Soyuz 2.1b flight · 1st this yearRussian Space Forces's 116th launch1st this yearhumanity's 6,046th orbital launch attempt9th orbital launch attempt this year

Flight preview

Orbit: as tracked

67.1°Inclination
247 × 906 kmPerigee × apogeefrom mean elements
96.1 minPeriodfrom mean elements
71.0°Ascending node
2081 d agoElement epoch2021-02-02 22:26 UTC · stale

Kosmos-2549 · NORAD 47546 · 2021-008 · Space-Track · tracking 1 of 2 objects

Show the numbers for orbit elements
Object
TBA - TO BE ASSIGNED
Object ID
2021-008A
Epoch
2021-02-02 22:26:58 UTC
Mean motion
14.99172202 rev/day
Eccentricity
0.0474771
Inclination
67.1431°
Ascending node
70.9762°
Arg. of perigee
92.372°
Mean anomaly
344.1863°
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: LEO. Ascent drawn from padside's representative profile.

Catalogued objects

2 catalogued: 1 payload, 1 rocket stage; 1 still in orbit

  • Kosmos-2549 · NORAD 47546 · in orbit

Soyuz-2-1b Blok-I · re-entered March 3, 2022

Data from J. McDowell, planet4589.org

About this launch

Lotos-S1 spacecraft is a part of the Liana constellation, designed for orbital electronic intelligence.

Pad

Map of 43/4 (43R)

43/4 (43R), Plesetsk Cosmodrome, Russian Federation

304th launch from 43/4 (43R), 1st this year · 1,642nd from Plesetsk Cosmodrome, Russian Federation

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

100 days after the previous launch from this pad

All launches from Plesetsk Cosmodrome, Russian FederationOpen in maps

Updates

Satellite was successfully delivered into orbit.

spacevogel · Feb 2, 2021 · source

Show 3 earlier updates

  • Launch in in flight!

    spacevogel · 2/2/2021 · source

  • Added launch time (NOTAMs also out).

    Cosmic_Penguin · 2/1/2021 · source

  • Added launch.

    Cosmic_Penguin · 1/30/2021 · source

Questions

When did Lotos-S1 launch?

Lotos-S1 launched on February 2, 2021. The time is known to the hour, not the minute.

Where can I watch Lotos-S1?

No webcast is on record for this launch.

What rocket launched Lotos-S1?

Soyuz 2.1b, flown by Russian Space Forces. Soyuz 2.1b spec sheet

Where did Lotos-S1 launch from?

43/4 (43R), Plesetsk Cosmodrome, Russian Federation.

What orbit did Lotos-S1 reach?

Kosmos-2549, one of 2 catalogued objects, reached a 247 × 906 km orbit inclined 67.1°.

How many satellites did Lotos-S1 launch?

1 payload from this launch is catalogued, still in orbit (Data from J. McDowell, planet4589.org).