COSMOS 448, 5551
Orbit data source: Space-Track
COSMOS 448, 5551 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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5551 intel report (Beta)
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Identifier
Orbit
Country
CISRelated business
Manufacturer
OKB-10
Mission
Spacecraft
Bus & Motor
STRELA-1 11F625, Unknown motor
Mass
60 kg wet, 60 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Unknown
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 2 days ago
TLE from 2 days ago
0 COSMOS 448
1 5551U 71086E 26171.37845296 .00000006 00000-0 14905-3 0 9997
2 5551 74.0268 136.3334 0049184 187.6794 328.3152 12.46763601488860Epoch: 2026-06-20T09:04Z
TLE epoch observation values (Epoch: 2026-06-20T09:04:58.335Z)
Latitude
23.33269°
Longitude
-95.56077°
Altitude
1,447.555 km
Speed
7.155 km/s
True Right ascension
20h 37m 06s
True Declination
23° 13' 08"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
00:33:07
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,514.53 km
Perigee altitude
1,437.271 km
Semi-major axis
7,854.037 km
Eccentricity
0.00492
Inclination
74.0268°
RAAN
136.3334°
Arg. of periapsis
187.6794°
True anomaly
328.01761°
Mean anomaly
328.3152°
Eccentric anomaly
328.16656°
Mean motion
3.1182 °/min
Orbital period
115.45 mins
BSTAR
0.00014905
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Other satellites on launch #86 in the year 1971 (1971-10-13 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.COSMOS 448 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 21:56:36.925Z | 176.217° S | 2026-06-22 22:04:36.925Z | 112.414° ESE | 39.669° | 2026-06-22 22:12:36.925Z | 28.794° NE |
| 14 mins | 2026-06-22 23:56:36.925Z | 243.707° WSW | 2026-06-23 00:03:36.925Z | 305.731° NW | 29.463° | 2026-06-23 00:10:36.925Z | 2.719° NNE |
| 6 mins | 2026-06-23 06:10:36.925Z | 21.795° NNE | 2026-06-23 06:13:36.925Z | 43.429° NE | 12.963° | 2026-06-23 06:16:36.925Z | 64.836° ENE |
| 15 mins | 2026-06-23 08:06:36.925Z | 350.844° N | 2026-06-23 08:13:36.925Z | 69.908° E | 40.586° | 2026-06-23 08:21:36.925Z | 144.494° SSE |
| 12 mins | 2026-06-23 10:05:36.925Z | 311.933° NW | 2026-06-23 10:10:36.925Z | 267.189° W | 26.168° | 2026-06-23 10:17:36.925Z | 210.469° SW |
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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