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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, 0.4 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 10 hours ago

TLE from 10 hours ago

0 COSMOS 81
1 01571U 65070B   26207.44890602 -.00000093  00000-0  16923-4 0  9990
2 01571  56.0601  95.6877 0088951 140.3627  30.5843 12.48868497777528

Epoch: 2026-07-26T10:46Z

TLE epoch observation values (Epoch: 2026-07-26T10:46:25.480Z)

Latitude

7.03153°

Longitude

165.19699°

Altitude

1,409.721 km

Speed

7.184 km/s

True Right ascension

18h 03m 47s

True Declination

6° 59' 36"

Sunlit

Object was in full shadow 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

09:57:18

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,538.856 km

Perigee altitude

1,399.253 km

Semi-major axis

7,847.191 km

Eccentricity

0.0089

Inclination

56.0601°

RAAN

95.6877°

Arg. of periapsis

140.3627°

True anomaly

31.10793°

Mean anomaly

30.5843°

Eccentric anomaly

30.84561°

Mean motion

3.12228 °/min

Orbital period

115.3 mins

BSTAR

0.000016923

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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.
14 mins	2026-07-26 21:40:33.794Z	284.508° WNW	2026-07-26 21:47:33.794Z	340.716° N	27.7°	2026-07-26 21:54:33.794Z	40.905° NE
12 mins	2026-07-26 23:45:33.794Z	323.092° NNW	2026-07-26 23:50:33.794Z	7.067° NNE	25.933°	2026-07-26 23:57:33.794Z	66.947° ENE
15 mins	2026-07-27 01:46:33.794Z	321.68° NNW	2026-07-27 01:53:33.794Z	48.483° ENE	40.786°	2026-07-27 02:01:33.794Z	116.833° SE
13 mins	2026-07-27 03:47:33.794Z	296.467° NW	2026-07-27 03:53:33.794Z	234.305° WSW	33.338°	2026-07-27 04:00:33.794Z	172.876° S
9 mins	2026-07-27 16:43:33.794Z	145.74° SSE	2026-07-27 16:47:33.794Z	116.076° SE	17.849°	2026-07-27 16:52:33.794Z	79.079° E
16 mins	2026-07-27 18:39:33.794Z	214.926° SW	2026-07-27 18:47:33.794Z	100.746° ESE	44.171°	2026-07-27 18:55:33.794Z	47.634° ENE

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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: 10 hours ago

TLE from 10 hours ago

TLE epoch observation values (Epoch: 2026-07-26T10:46:25.480Z)

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: 10 hours ago