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COSMOS 2147, 21303

Orbit data source: Space-Track

COSMOS 2147, 21303 is a payload satellite owned by UNKS RF (CIS) in LEO that was launched on Thu, 16 May 1991 UTC via a TSIKLON-3 launch vehicle from the Plesetsk Missile And Space Complex (PKMTR). 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/21303?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21303, 1991-033E

Orbit

LEO

Last TLE update

21 hours ago

Origin

Russian Space Forces (CIS)

Manufacturer

NPO PM

Mission

Defense Communications

Bus & Motor

STRELA-3, Unknown motor

Mass

225 kg wet, 225 kg dry

Launch date (UTC)

1991-05-16 (34 years ago)

Launch vehicle

TSIKLON-3

Launch site

Plesetsk Missile And Space Complex (PKMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl, 0.8 m

Radar Cross Section

1.257 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 21 hours ago

0 COSMOS 2147
1 21303U 91033E   25197.86228289  .00000024  00000-0  73142-4 0  9991
2 21303  82.5678 130.6901 0020170  47.6413   7.0563 12.65154178577743

Epoch: 2025-07-16T20:41Z

TLE epoch observation values (Epoch: 2025-07-16T20:41:41.241Z)

Latitude

54.14347°

Longitude

-104.3215°

Altitude

1,395.013 km

Speed

7.174 km/s

True Right ascension

09h 24m 08s

True Declination

53° 59' 36"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

81.20484°

Longitude

7.73829°

Altitude

1,404.922 km

Speed

7.169 km/s

Apparent Right ascension

18h 10m 55s

Apparent Declination

30° 55' 53"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

06:29:41

Azimuth

4.259° NNE

Elevation

-19.019°

Doppler factor

Orbital elements

Apogee altitude

1,414.746 km

Perigee altitude

1,383.373 km

Semi-major axis

7,777.197 km

Eccentricity

0.00202

Inclination

82.5678°

RAAN

130.6901°

Arg. of periapsis

47.6413°

True anomaly

Unknown

Mean anomaly

7.0563°

Eccentric anomaly

Unknown

Mean motion

3.16453 °/min

Orbital period

113.76 mins

BSTAR

0.000073142

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Other satellites on launch #33 in the year 1991 (1991-05-16 UTC)

COSMOS 2143 DEB, 57720

COSMOS 2143 DEB, 57721

COSMOS 2143 DEB, 57722

COSMOS 2143 DEB, 57723

COSMOS 2143 DEB, 57724

COSMOS 2143 DEB, 57725

COSMOS 2147 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.
13 mins	2025-07-17 19:16:57.727Z	148.992° SSE	2025-07-17 19:23:57.727Z	80.609° E	32.235°	2025-07-17 19:29:57.727Z	25.739° NE
13 mins	2025-07-17 21:11:57.727Z	221.912° SW	2025-07-17 21:17:57.727Z	281.513° WNW	33.568°	2025-07-17 21:24:57.727Z	351.61° N
7 mins	2025-07-18 05:18:57.727Z	37.431° NE	2025-07-18 05:21:57.727Z	60.596° ENE	14.28°	2025-07-18 05:25:57.727Z	90.686° ESE
15 mins	2025-07-18 07:10:57.727Z	355.559° N	2025-07-18 07:17:57.727Z	62.04° ENE	44.367°	2025-07-18 07:25:57.727Z	168.506° S
9 mins	2025-07-18 09:07:57.727Z	313.435° NW	2025-07-18 09:11:57.727Z	280.219° WNW	18.654°	2025-07-18 09:16:57.727Z	240.991° WSW

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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Authenticating...

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Check out COSMOS 2147, 21303 on other resources

View COSMOS 2147, 21303 on NASA - NSSDCA Website

View COSMOS 2147, 21303 on Heavens-Above

View COSMOS 2147, 21303 on Keep Track

View COSMOS 2147, 21303 on Celestrak

View COSMOS 2147, 21303 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.