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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

Last TLE update

8 hours ago

Origin

Federal Space Agency of Russia (Roscosmos) (CIS)

Manufacturer

OKB-10

Mission

Defense Communications

Bus & Motor

STRELA-1 11F610, Unknown motor

Mass

50 kg wet, 50 kg dry

Launch date (UTC)

1965-09-03 (60 years ago)

Launch vehicle

KOSMOS 65S3

Launch site

Tyuratam Missile And Space Complex (TTMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Poly, 0.8 m

Radar Cross Section

0.731 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history

TLE from 8 hours ago

0 COSMOS 81
1 01571U 65070B   25186.58382844 -.00000099  00000-0 -25942-4 0  9992
2 01571  56.0614  54.8183 0087418 343.7885  51.4731 12.48862739729327

Epoch: 2025-07-05T14:00Z

TLE epoch observation values (Epoch: 2025-07-05T14:00:42.777Z)

Latitude

29.29978°

Longitude

-57.10753°

Altitude

1,428.733 km

Speed

7.169 km/s

True Right ascension

05h 07m 33s

True Declination

29° 09' 57"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

48.98995°

Longitude

49.54851°

Altitude

1,519.482 km

Speed

7.091 km/s

Apparent Right ascension

16h 46m 12s

Apparent Declination

33° 07' 40"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

10:03:09

Azimuth

57.73° ENE

Elevation

13.341°

Doppler factor

Orbital elements

Apogee altitude

1,537.677 km

Perigee altitude

1,400.479 km

Semi-major axis

7,847.215 km

Eccentricity

0.00874

Inclination

56.0614°

RAAN

54.8183°

Arg. of periapsis

343.7885°

True anomaly

Unknown

Mean anomaly

51.4731°

Eccentric anomaly

Unknown

Mean motion

3.12227 °/min

Orbital period

115.3 mins

BSTAR

-0.000025942

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

COSMOS 81 Visibility forecast

Observer location: undefined°, undefined°

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.
16 mins	2025-07-05 23:56:00.934Z	322.304° NNW	2025-07-06 00:03:00.934Z	28.245° NE	37.036°	2025-07-06 00:12:00.934Z	105.249° ESE
16 mins	2025-07-06 01:57:00.934Z	306.136° NW	2025-07-06 02:04:00.934Z	234.046° WSW	41.015°	2025-07-06 02:13:00.934Z	156.152° SSE
5 mins	2025-07-06 04:01:00.934Z	262.942° W	2025-07-06 04:03:00.934Z	249.588° W	12.075°	2025-07-06 04:06:00.934Z	229.972° WSW
15 mins	2025-07-06 16:50:00.934Z	199.649° SSW	2025-07-06 16:57:00.934Z	132.883° SE	39.843°	2025-07-06 17:05:00.934Z	52.847° ENE
15 mins	2025-07-06 18:51:00.934Z	258.03° W	2025-07-06 18:58:00.934Z	329.094° NNW	37.187°	2025-07-06 19:06:00.934Z	40.581° NE
13 mins	2025-07-06 20:55:00.934Z	306.074° NW	2025-07-06 21:01:00.934Z	358.396° N	25.5°	2025-07-06 21:08:00.934Z	50.9° ENE

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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

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