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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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Identifier
12546, 1981-057C
Orbit
HEO
Last TLE update
8 hours ago
Origin
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 8 hours ago
0 CAT 3
1 12546U 81057C   25194.34415215  .00000844  00000-0  33336-3 0  9992
2 12546  10.1521 148.9802 5680921 203.3072 114.9065  4.48605058399883
Epoch: 2025-07-13T08:15Z
TLE epoch observation values (Epoch: 2025-07-13T08:15:34.745Z)
Latitude
-0°
Longitude
93.57125°
Altitude
15,610.501 km
Speed
3.254 km/s
True Right ascension
09h 55m 44s
True Declination
0° 00' 00"
Sunlit
Object was in daylight at epoch
Visualization orbit readout
Latitude
10.03456°
Longitude
173.74729°
Altitude
8,905.444 km
Speed
5.147 km/s
Apparent Right ascension
15h 39m 37s
Apparent Declination
-4° 07' 24"
Sunlit
Object is in daylight
Visualization observer readout
Local Sidereal Time
04:51:56
Azimuth
29.224° NE
Elevation
-50.658°
Doppler factor
1
Orbital elements
Apogee altitude
17,981.262 km
Perigee altitude
331.301 km
Semi-major axis
15,534.419 km
Eccentricity
0.56809
Inclination
10.1521°
RAAN
148.9802°
Arg. of periapsis
203.3072°
True anomaly
Unknown
Mean anomaly
114.9065°
Eccentric anomaly
Unknown
Mean motion
1.12099 °/min
Orbital period
321.15 mins
BSTAR
0.00033336
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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.
203 mins2025-07-13 17:48:12.071Z176.553° S2025-07-13 19:06:12.071Z126.968° SE20.217°2025-07-13 21:11:12.071Z103.624° ESE
219 mins2025-07-13 23:55:12.071Z238.639° WSW2025-07-14 03:00:12.071Z197.202° SSW33.905°2025-07-14 03:34:12.071Z133.157° SE
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