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COSMOS 451, 5554

Orbit data source: Space-Track

COSMOS 451, 5554 is a payload satellite owned by OKB-10 (CIS) in LEO that was launched on Wed, 13 Oct 1971 UTC via a KOSMOS 11K65M launch vehicle from the Plesetsk Missile And Space Complex (PKMTR). Payload-class satellites include a variety of spacecraft equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.

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Iframe URL

https://www.satcat.com/sats-embedded/5554?theme=dark&initialShowStats=false

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ISO8601 Format

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ISO8601 Format

Identifier

5554, 1971-086H

Orbit

LEO

Country

CIS

Related business

Federal Space Agency of Russia (Roscosmos) (RU)

Manufacturer

OKB-10

Mission

Spacecraft

Bus & Motor

STRELA-1 11F625, Unknown motor

Mass

60 kg wet, 60 kg dry

Launch date (UTC)

1971-10-13 (55 years ago)

Launch vehicle

KOSMOS 11K65M

Launch site

Plesetsk Missile And Space Complex (PKMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 2 days ago

TLE from 2 days ago

0 COSMOS 451
1  5554U 71086H   26171.36504520 -.00000021  00000-0 -48927-4 0  9992
2  5554  74.0295  25.7705 0053386 238.7563 294.1520 12.34308838464077

Epoch: 2026-06-20T08:45Z

TLE epoch observation values (Epoch: 2026-06-20T08:45:39.905Z)

Latitude

7.29505°

Longitude

163.68419°

Altitude

1,515.445 km

Speed

7.116 km/s

True Right ascension

13h 34m 43s

True Declination

7° 15' 22"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

23:08:18

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,570.886 km

Perigee altitude

1,486.463 km

Semi-major axis

7,906.811 km

Eccentricity

0.00534

Inclination

74.0295°

RAAN

25.7705°

Arg. of periapsis

238.7563°

True anomaly

293.59227°

Mean anomaly

294.152°

Eccentric anomaly

293.87229°

Mean motion

3.08703 °/min

Orbital period

116.62 mins

BSTAR

-0.000048927

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Other satellites on launch #86 in the year 1971 (1971-10-13 UTC)

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COSMOS 451 Visibility forecast

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Span	Click to sort rows by Start time (UTC) header in descending order	Start Az.	Max El. time (UTC)	Max El. Az.	Max El.	End time (UTC)	End Az.
16 mins	2026-06-22 14:22:01.735Z	166.856° S	2026-06-22 14:30:01.735Z	99.087° ESE	36.002°	2026-06-22 14:38:01.735Z	31.488° NE
15 mins	2026-06-22 16:22:01.735Z	234.664° WSW	2026-06-22 16:29:01.735Z	296.876° NW	33.954°	2026-06-22 16:37:01.735Z	5.964° NNE
5 mins	2026-06-22 22:41:01.735Z	25.299° NE	2026-06-22 22:43:01.735Z	38.951° NE	12.31°	2026-06-22 22:46:01.735Z	59.203° ENE
16 mins	2026-06-23 00:37:01.735Z	351.057° N	2026-06-23 00:45:01.735Z	70.798° E	38.774°	2026-06-23 00:53:01.735Z	139.626° SSE
14 mins	2026-06-23 02:37:01.735Z	319.191° NNW	2026-06-23 02:43:01.735Z	269.208° W	29.569°	2026-06-23 02:51:01.735Z	204.207° SW

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Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out COSMOS 451, 5554 on other resources

View COSMOS 451, 5554 on NASA - NSSDCA Website

View COSMOS 451, 5554 on Heavens-Above

View COSMOS 451, 5554 on Keep Track

View COSMOS 451, 5554 on Celestrak

View COSMOS 451, 5554 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

COSMOS 451, 5554

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 2 days ago

TLE from 2 days ago

TLE epoch observation values (Epoch: 2026-06-20T08:45:39.905Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #86 in the year 1971 (1971-10-13 UTC)

COSMOS 451 Visibility forecast

Co-orbital & Co-planar RSOs

Check out COSMOS 451, 5554 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 2 days ago