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COSMOS 1894, 18443

Orbit data source: Space-Track

COSMOS 1894, 18443 is a payload satellite owned by PVO (CIS) in GEO that was launched on Wed, 28 Oct 1987 UTC via a PROTON-K/DM-2 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/18443?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

18443, 1987-091A

Orbit

GEO

Country

CIS

Related business

Russian Aerospace Forces (RU)

Manufacturer

NPOL/KOMET

Mission

Defense Early Warn

Bus & Motor

OKO, Unknown motor

Mass

~1,250 kg wet, ~1,150 kg dry

Launch date (UTC)

1987-10-28 (38 years ago)

Launch vehicle

PROTON-K/DM-2

Launch site

Tyuratam Missile And Space Complex (TTMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl + 2 Pan, 2.5 m

Radar Cross Section

6.333 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 23 hours ago

TLE from 23 hours ago

0 COSMOS 1894
1 18443U 87091A   25256.01067993 -.00000193  00000-0  00000-0 0  9994
2 18443  11.1521 327.3235 0001688 341.6095  23.6311  1.00289019118049

Epoch: 2025-09-13T00:15Z

TLE epoch observation values (Epoch: 2025-09-13T00:15:22.745Z)

Latitude

1.01239°

Longitude

-23.61901°

Altitude

35,774.632 km

Speed

3.075 km/s

True Right ascension

22h 09m 54s

True Declination

1° 00' 41"

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

15:40:41

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

35,789.893 km

Perigee altitude

35,775.659 km

Semi-major axis

42,160.913 km

Eccentricity

0.00017

Inclination

11.1521°

RAAN

327.3235°

Arg. of periapsis

341.6095°

True anomaly

23.63886°

Mean anomaly

23.6311°

Eccentric anomaly

23.63498°

Mean motion

0.25071 °/min

Orbital period

1,435.9 mins

BSTAR

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Computing Atmospheric mass density...

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Other satellites on launch #91 in the year 1987 (1987-10-28 UTC)

SL-12 R/B(1), 18444 (Decayed)

SL-12 PLAT, 18445 (Decayed)

SL-12 R/B(2), 18446

SL-12 R/B(AUX MOTOR), 18447 (Decayed)

SL-12 R/B(AUX MOTOR), 18448 (Decayed)

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COSMOS 1894 Visibility

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18443 neighbors

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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 1894, 18443 on other resources

View COSMOS 1894, 18443 on NASA - NSSDCA Website

View COSMOS 1894, 18443 on Heavens-Above

View COSMOS 1894, 18443 on Keep Track

View COSMOS 1894, 18443 on Celestrak

View COSMOS 1894, 18443 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 1894, 18443

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 23 hours ago

TLE from 23 hours ago

TLE epoch observation values (Epoch: 2025-09-13T00:15:22.745Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #91 in the year 1987 (1987-10-28 UTC)

COSMOS 1894 Visibility

18443 neighbors

Co-orbital & Co-planar RSOs

Check out COSMOS 1894, 18443 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 23 hours ago