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COSMOS 2155, 21702

Orbit data source: Space-Track

COSMOS 2155, 21702 is a payload satellite owned by PVO (CIS) in GEO that was launched on Fri, 13 Sep 1991 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/21702?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21702, 1991-064A

Orbit

GEO

Country

CIS

Related business

Russian Aerospace Forces (RU)

Manufacturer

NPOL/KOMET

Mission

Non-operational Defense Early Warn

Bus & Motor

OKO, Unknown motor

Mass

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

Launch date (UTC)

1991-09-13 (35 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: 7 hours ago

TLE from 7 hours ago

0 COSMOS 2155
1 21702U 91064A   26105.25434498  .00000109  00000-0  00000-0 0  9995
2 21702  13.1730 339.7309 0002336 267.9074 258.6701  1.00184315126700

Epoch: 2026-04-15T06:06Z

TLE epoch observation values (Epoch: 2026-04-15T06:06:15.406Z)

Latitude

3.02793°

Longitude

-148.34979°

Altitude

35,812.224 km

Speed

3.074 km/s

True Right ascension

09h 46m 31s

True Declination

3° 01' 30"

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

19:12:23

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

35,821.978 km

Perigee altitude

35,802.267 km

Semi-major axis

42,190.259 km

Eccentricity

0.00023

Inclination

13.173°

RAAN

339.7309°

Arg. of periapsis

267.9074°

True anomaly

258.64385°

Mean anomaly

258.6701°

Eccentric anomaly

258.65698°

Mean motion

0.25045 °/min

Orbital period

1,437.4 mins

BSTAR

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Computing Atmospheric mass density...

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Other satellites on launch #64 in the year 1991 (1991-09-13 UTC)

SL-12 R/B(2), 21703

SL-12 PLAT, 21704 (Decayed)

SL-12 R/B(AUX MOTOR), 21739 (Decayed)

SL-12 R/B(AUX MOTOR), 21740 (Decayed)

SL-12 R/B(1), 21705 (Decayed)

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COSMOS 2155 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.
1440 mins	2026-04-15 12:38:06.969Z	227.158° WSW	2026-04-16 01:23:06.969Z	247.492° WSW	30.637°	2026-04-16 12:38:06.969Z	227.407° WSW

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21702 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 2155, 21702 on other resources

View COSMOS 2155, 21702 on NASA - NSSDCA Website

View COSMOS 2155, 21702 on Heavens-Above

View COSMOS 2155, 21702 on Keep Track

View COSMOS 2155, 21702 on Celestrak

View COSMOS 2155, 21702 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 2155, 21702

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 7 hours ago

TLE from 7 hours ago

TLE epoch observation values (Epoch: 2026-04-15T06:06:15.406Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #64 in the year 1991 (1991-09-13 UTC)

COSMOS 2155 Visibility forecast

21702 neighbors

Co-orbital & Co-planar RSOs

Check out COSMOS 2155, 21702 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 7 hours ago