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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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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 (39 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)

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Last TLE update: 14 hours ago

TLE from 14 hours ago

0 COSMOS 1894
1 18443U 87091A   26252.07934472 -.00000281  00000-0  00000-0 0  9990
2 18443  10.6381 325.0258 0002735  21.2947 353.6855  1.00226789121664

Epoch: 2026-09-09T01:54Z

TLE epoch observation values (Epoch: 2026-09-09T01:54:15.383Z)

Latitude

2.72857°

Longitude

-36.92599°

Altitude

35,786.903 km

Speed

3.075 km/s

True Right ascension

22h 39m 05s

True Declination

2° 43' 33"

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

07:41:19

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

35,811.766 km

Perigee altitude

35,788.695 km

Semi-major axis

42,178.367 km

Eccentricity

0.00027

Inclination

10.6381°

RAAN

325.0258°

Arg. of periapsis

21.2947°

True anomaly

353.68205°

Mean anomaly

353.6855°

Eccentric anomaly

353.68378°

Mean motion

0.25056 °/min

Orbital period

1,436.79 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(2), 18446

SL-12 PLAT, 18445 (Decayed)

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

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

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

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COSMOS 1894 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.
581 mins	2026-09-10 01:53:01.084Z	102.281° ESE	2026-09-10 06:28:01.084Z	95.836° ESE	15.062°	2026-09-10 11:34:01.084Z	101.443° ESE

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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: 14 hours ago

TLE from 14 hours ago

TLE epoch observation values (Epoch: 2026-09-09T01:54:15.383Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

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

COSMOS 1894 Visibility forecast

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: 14 hours ago