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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

Unknown

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 3 days ago

TLE from 3 days ago

0 COSMOS 81
1 01571U 65070B   26154.35437516 -.00000072  00000-0  15788-3 0  9996
2 01571  56.0596 238.6722 0089578  70.5445 359.9839 12.48868061770890

Epoch: 2026-06-03T08:30Z

TLE epoch observation values (Epoch: 2026-06-03T08:30:18.013Z)

Latitude

51.58865°

Longitude

-83.09227°

Altitude

1,405.524 km

Speed

7.195 km/s

True Right ascension

19h 45m 11s

True Declination

51° 26' 06"

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

08:22:06

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,539.35 km

Perigee altitude

1,398.762 km

Semi-major axis

7,847.193 km

Eccentricity

0.00896

Inclination

56.0596°

RAAN

238.6722°

Arg. of periapsis

70.5445°

True anomaly

359.98361°

Mean anomaly

359.9839°

Eccentric anomaly

359.98375°

Mean motion

3.12228 °/min

Orbital period

115.3 mins

BSTAR

0.00015788

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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.
10 mins	2026-06-06 05:24:09.644Z	152.597° SSE	2026-06-06 05:29:09.644Z	115.219° SE	17.905°	2026-06-06 05:34:09.644Z	77.242° E
15 mins	2026-06-06 07:21:09.644Z	216.944° SW	2026-06-06 07:28:09.644Z	165.383° S	44.46°	2026-06-06 07:36:09.644Z	47.38° ENE
14 mins	2026-06-06 09:23:09.644Z	272.939° WNW	2026-06-06 09:30:09.644Z	341.007° N	31.592°	2026-06-06 09:37:09.644Z	39.975° NE
12 mins	2026-06-06 11:27:09.644Z	314.645° NW	2026-06-06 11:33:09.644Z	7.853° NNE	24.199°	2026-06-06 11:39:09.644Z	55.457° ENE
14 mins	2026-06-06 13:29:09.644Z	325.232° NNW	2026-06-06 13:35:09.644Z	25.275° NE	34.782°	2026-06-06 13:43:09.644Z	99.107° ESE
15 mins	2026-06-06 15:29:09.644Z	308.558° NW	2026-06-06 15:36:09.644Z	236.387° WSW	42.349°	2026-06-06 15:44:09.644Z	152.773° SSE
6 mins	2026-06-06 17:33:09.644Z	263.864° W	2026-06-06 17:35:09.644Z	249.362° W	13.276°	2026-06-06 17:39:09.644Z	221.603° 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 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: 3 days ago

TLE from 3 days ago

TLE epoch observation values (Epoch: 2026-06-03T08:30:18.013Z)

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: 3 days ago