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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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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: 8 hours ago

TLE from 8 hours ago

0 COSMOS 81
1 01571U 65070B   26318.95090422 -.00000102  00000-0 -46674-4 0  9999
2 01571  56.0573 155.4146 0085598 292.0627 213.7691 12.48870019791456

Epoch: 2026-11-14T22:49Z

TLE epoch observation values (Epoch: 2026-11-14T22:49:18.124Z)

Latitude

28.25772°

Longitude

-82.0595°

Altitude

1,526.912 km

Speed

7.08 km/s

True Right ascension

20h 57m 15s

True Declination

28° 07' 43"

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

03:48:50

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,536.218 km

Perigee altitude

1,401.878 km

Semi-major axis

7,847.185 km

Eccentricity

0.00856

Inclination

56.0573°

RAAN

155.4146°

Arg. of periapsis

292.0627°

True anomaly

213.2287°

Mean anomaly

213.7691°

Eccentric anomaly

213.49842°

Mean motion

3.12228 °/min

Orbital period

115.3 mins

BSTAR

-0.000046674

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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.
11 mins	2026-11-15 13:30:44.693Z	151.133° SSE	2026-11-15 13:35:44.693Z	115.334° SE	18.662°	2026-11-15 13:41:44.693Z	73.319° E
16 mins	2026-11-15 15:27:44.693Z	214.751° SW	2026-11-15 15:34:44.693Z	163.475° S	76.132°	2026-11-15 15:43:44.693Z	47.589° ENE
15 mins	2026-11-15 17:29:44.693Z	271.253° WNW	2026-11-15 17:36:44.693Z	336.881° NNW	41.139°	2026-11-15 17:44:44.693Z	41.354° NE
13 mins	2026-11-15 19:33:44.693Z	312.421° NW	2026-11-15 19:39:44.693Z	1.957° NNE	28.912°	2026-11-15 19:46:44.693Z	55.827° ENE
15 mins	2026-11-15 21:35:44.693Z	323.252° NNW	2026-11-15 21:42:44.693Z	28.607° NE	44.923°	2026-11-15 21:50:44.693Z	97.61° ESE
17 mins	2026-11-15 23:35:44.693Z	310.323° NW	2026-11-15 23:43:44.693Z	236.728° WSW	69.597°	2026-11-15 23:52:44.693Z	150.149° SSE
8 mins	2026-11-16 01:39:44.693Z	271.172° WNW	2026-11-16 01:42:44.693Z	250.051° W	15.78°	2026-11-16 01:47:44.693Z	216.037° 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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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: 8 hours ago

TLE from 8 hours ago

TLE epoch observation values (Epoch: 2026-11-14T22:49:18.124Z)

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: 8 hours ago