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CAT 3, 12546

Orbit data source: Space-Track

CAT 3, 12546 is a payload satellite owned by ESA (ESA) in HEO that was launched on Fri, 19 Jun 1981 UTC via an ARIANE 1 launch vehicle from the French Guiana (FRGUI). 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 src="https://www.satcat.com/sats-embedded/12546?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/12546?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

12546, 1981-057C

Orbit

HEO

Last TLE update

11 hours ago

Origin

European Space Agency (ESA)

Manufacturer

AERIT/CNEST

Mission

Non-operational Civil Technology

Bus & Motor

CAT, Unknown motor

Mass

266 kg wet, 266 kg dry

Launch date (UTC)

1981-06-19 (44 years ago)

Launch vehicle

ARIANE 1

Launch site

French Guiana (FRGUI)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl, 1.2 m

Radar Cross Section

1.319 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 11 hours ago

0 CAT 3
1 12546U 81057C   25129.15913924  .00001191  00000-0  40662-3 0  9995
2 12546  10.0868 211.3433 5678805  81.9392 335.5342  4.48486238396966

Epoch: 2025-05-09T03:49Z

Definitive object data (Epoch: 2025-05-09T03:49:09.63Z)

Latitude

0.00001°

Longitude

-73.09473°

Altitude

3,363.365 km

Speed

7.495 km/s

True Right ascension

14h 05m 39s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow at TLE epoch

Visualization TLE readout

Latitude

-1.74204°

Longitude

-83.31812°

Altitude

4,427.951 km

Speed

6.936 km/s

Apparent Right ascension

12h 33m 30s

Apparent Declination

-16° 32' 42"

Sunlit

Object is in full shadow

Visualization observer readout

Local Sidereal Time

22:36:22

Azimuth

304.155° NW

Elevation

-55.489°

Doppler factor

Orbital elements

Apogee altitude

17,982.275 km

Perigee altitude

335.773 km

Semi-major axis

15,537.161 km

Eccentricity

0.5678805

Inclination

10.0868°

RAAN

211.3433°

Arg. of periapsis

81.9392°

True anomaly

278.03318°

Mean anomaly

335.5342°

Eccentric anomaly

310.9651°

Mean motion

1.12069 °/min

BSTAR

0.00040662

Orbital period

321.23 mins

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Other satellites on launch #57 in the year 1981 (1981-06-19 UTC)

METEOSAT 2, 12544

APPLE, 12545

ARIANE 1 R/B, 12562 (Decayed)

ARIANE 1 DEB, 14125 (Decayed)

METEOSAT 2 AKM (MAGE 1), 20837

ARIANE 1 DEB, 48343

CAT 3 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.
228 mins	2025-05-09 20:53:13.502Z	221.446° SW	2025-05-09 22:18:13.502Z	177.18° S	24.076°	2025-05-10 00:41:13.502Z	138.009° SSE

Authenticating...

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Check out CAT 3, 12546 on other resources

View CAT 3, 12546 on NASA - NSSDCA Website

View CAT 3, 12546 on Heavens-Above

View CAT 3, 12546 on Keep Track

View CAT 3, 12546 on Celestrak

View CAT 3, 12546 on Gunter's Space Page

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