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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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Iframe URL

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

Unknown

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 9 hours ago

TLE from 9 hours ago

0 COSMOS 81
1 01571U 65070B   26066.56272760 -.00000070  00000-0  16609-3 0  9990
2 01571  56.0592 115.0954 0086215 312.7755 215.3046 12.48867118759929

Epoch: 2026-03-07T13:30Z

TLE epoch observation values (Epoch: 2026-03-07T13:30:19.664Z)

Latitude

10.31396°

Longitude

-79.76968°

Altitude

1,524.958 km

Speed

7.079 km/s

True Right ascension

19h 12m 22s

True Declination

10° 15' 34"

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

02:35:22

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,536.715 km

Perigee altitude

1,401.405 km

Semi-major axis

7,847.197 km

Eccentricity

0.00862

Inclination

56.0592°

RAAN

115.0954°

Arg. of periapsis

312.7755°

True anomaly

214.73863°

Mean anomaly

215.3046°

Eccentric anomaly

215.02112°

Mean motion

3.12228 °/min

Orbital period

115.3 mins

BSTAR

0.00016609

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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	2026-03-08 04:04:13.737Z	175.344° S	2026-03-08 04:11:13.737Z	116.97° SE	28.085°	2026-03-08 04:18:13.737Z	62.258° ENE
16 mins	2026-03-08 06:03:13.737Z	234.522° WSW	2026-03-08 06:11:13.737Z	334.017° NNW	43.738°	2026-03-08 06:19:13.737Z	43.1° NE
14 mins	2026-03-08 08:06:13.737Z	286.087° WNW	2026-03-08 08:13:13.737Z	346.427° N	28.684°	2026-03-08 08:20:13.737Z	42.109° NE
14 mins	2026-03-08 10:10:13.737Z	319.822° NNW	2026-03-08 10:16:13.737Z	10.396° NNE	27.103°	2026-03-08 10:24:13.737Z	70.847° E
16 mins	2026-03-08 12:11:13.737Z	320.225° NNW	2026-03-08 12:19:13.737Z	48.96° ENE	40.917°	2026-03-08 12:27:13.737Z	115.408° SE
15 mins	2026-03-08 14:12:13.737Z	300.535° NW	2026-03-08 14:19:13.737Z	236.449° WSW	35.191°	2026-03-08 14:27:13.737Z	170.148° S

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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: 9 hours ago

TLE from 9 hours ago

TLE epoch observation values (Epoch: 2026-03-07T13:30:19.664Z)

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: 9 hours ago