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COSMOS 2148, 21304

Orbit data source: Space-Track

COSMOS 2148, 21304 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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Iframe URL

https://www.satcat.com/sats-embedded/21304?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21304, 1991-033F

Orbit

LEO

Last TLE update

20 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 20 hours ago

0 COSMOS 2148
1 21304U 91033F   25197.87112728  .00000034  00000-0  12403-3 0  9996
2 21304  82.5741 125.6293 0023710   1.6757  60.6573 12.65980812578678

Epoch: 2025-07-16T20:54Z

TLE epoch observation values (Epoch: 2025-07-16T20:54:25.396Z)

Latitude

61.74451°

Longitude

-108.95753°

Altitude

1,399.883 km

Speed

7.17 km/s

True Right ascension

09h 18m 22s

True Declination

61° 36' 46"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

-19.84074°

Longitude

-126.15086°

Altitude

1,388.359 km

Speed

7.173 km/s

Apparent Right ascension

10h 46m 54s

Apparent Declination

-58° 46' 52"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

06:02:58

Azimuth

147.334° SSE

Elevation

-24.784°

Doppler factor

Orbital elements

Apogee altitude

1,414.103 km

Perigee altitude

1,377.239 km

Semi-major axis

7,773.808 km

Eccentricity

0.00237

Inclination

82.5741°

RAAN

125.6293°

Arg. of periapsis

1.6757°

True anomaly

Unknown

Mean anomaly

60.6573°

Eccentric anomaly

Unknown

Mean motion

3.16659 °/min

Orbital period

113.69 mins

BSTAR

0.00012403

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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 2148 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.
15 mins	2025-07-17 19:25:18.954Z	168.342° S	2025-07-17 19:33:18.954Z	78.966° E	40.971°	2025-07-17 19:40:18.954Z	15.547° NNE
11 mins	2025-07-17 21:23:18.954Z	246.123° WSW	2025-07-17 21:28:18.954Z	293.566° NW	24.526°	2025-07-17 21:34:18.954Z	344.141° N
10 mins	2025-07-18 05:27:18.954Z	26.391° NE	2025-07-18 05:32:18.954Z	70.763° E	21.823°	2025-07-18 05:37:18.954Z	112.086° ESE
15 mins	2025-07-18 07:20:18.954Z	346.859° N	2025-07-18 07:27:18.954Z	269.096° W	43.413°	2025-07-18 07:35:18.954Z	185.341° SSW

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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Check out COSMOS 2148, 21304 on other resources

View COSMOS 2148, 21304 on NASA - NSSDCA Website

View COSMOS 2148, 21304 on Heavens-Above

View COSMOS 2148, 21304 on Keep Track

View COSMOS 2148, 21304 on Celestrak

View COSMOS 2148, 21304 on Gunter's Space Page

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