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COSMOS 81, 1571

Orbit data source: Space-Track

COSMOS 81, 1571 is a payload satellite owned by OKB-10 (CIS) in LEO that was launched on Fri, 03 Sep 1965 UTC via a KOSMOS 65S3 launch vehicle from the Tyuratam Missile And Space Complex (TTMTR). 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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https://www.satcat.com/sats-embedded/1571?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

1571, 1965-070B

Orbit

LEO

Country

CIS

Related business

Federal Space Agency of Russia (Roscosmos) (RU)

Manufacturer

OKB-10

Mission

Spacecraft

Bus & Motor

STRELA-1 11F610, Unknown motor

Mass

50 kg wet, 50 kg dry

Launch date (UTC)

1965-09-03 (61 years ago)

Launch vehicle

KOSMOS 65S3

Launch site

Tyuratam Missile And Space Complex (TTMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

POLY, 1.1 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 13 hours ago

TLE from 13 hours ago

0 COSMOS 81
1 01571U 65070B   26267.05202155 -.00000075  00000-0  13337-3 0  9998
2 01571  56.0606 295.1785 0086444 220.6677 161.6465 12.48869354784976

Epoch: 2026-09-24T01:14Z

TLE epoch observation values (Epoch: 2026-09-24T01:14:54.661Z)

Latitude

18.63528°

Longitude

-73.39146°

Altitude

1,534.233 km

Speed

7.072 km/s

True Right ascension

20h 32m 55s

True Declination

18° 32' 30"

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

07:14:52

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,536.885 km

Perigee altitude

1,401.216 km

Semi-major axis

7,847.187 km

Eccentricity

0.00864

Inclination

56.0606°

RAAN

295.1785°

Arg. of periapsis

220.6677°

True anomaly

161.95524°

Mean anomaly

161.6465°

Eccentric anomaly

161.80119°

Mean motion

3.12228 °/min

Orbital period

115.3 mins

BSTAR

0.00013337

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Other satellites on launch #70 in the year 1965 (1965-09-03 UTC)

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COSMOS 81 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.
12 mins	2026-09-25 02:11:39.971Z	157.333° SSE	2026-09-25 02:17:39.971Z	115.816° SE	20.787°	2026-09-25 02:23:39.971Z	73.154° E
16 mins	2026-09-25 04:09:39.971Z	216.986° SW	2026-09-25 04:17:39.971Z	94.88° ESE	79.609°	2026-09-25 04:25:39.971Z	47.033° ENE
15 mins	2026-09-25 06:11:39.971Z	272.312° WNW	2026-09-25 06:18:39.971Z	334.515° NNW	40.299°	2026-09-25 06:26:39.971Z	40.92° NE
13 mins	2026-09-25 08:15:39.971Z	312.067° NW	2026-09-25 08:21:39.971Z	0.295° NNE	28.652°	2026-09-25 08:28:39.971Z	56.044° ENE
15 mins	2026-09-25 10:17:39.971Z	322.559° NNW	2026-09-25 10:24:39.971Z	27.122° NE	45.455°	2026-09-25 10:32:39.971Z	99.279° ESE
15 mins	2026-09-25 12:18:39.971Z	308.347° NW	2026-09-25 12:25:39.971Z	235.711° WSW	65.899°	2026-09-25 12:33:39.971Z	153.051° SSE

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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 81, 1571 on other resources

View COSMOS 81, 1571 on NASA - NSSDCA Website

View COSMOS 81, 1571 on Heavens-Above

View COSMOS 81, 1571 on Keep Track

View COSMOS 81, 1571 on Celestrak

View COSMOS 81, 1571 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 81, 1571

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 13 hours ago

TLE from 13 hours ago

TLE epoch observation values (Epoch: 2026-09-24T01:14:54.661Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #70 in the year 1965 (1965-09-03 UTC)

COSMOS 81 Visibility forecast

Co-orbital & Co-planar RSOs

Check out COSMOS 81, 1571 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 13 hours ago