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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12546 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
ESARelated business
Manufacturer
AERIT/CNEST
Mission
Non-operational spacecraft
Bus & Motor
CAT, Unknown motor
Mass
266 kg wet, 266 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Unknown
Radar Cross Section
Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 20 hours ago
TLE from 20 hours ago
0 CAT 3
1 12546U 81057C 25307.68646781 .00002643 00000-0 58496-3 0 9992
2 12546 10.2240 40.8123 5696967 54.5112 346.1451 4.49023191404907Epoch: 2025-11-03T16:28Z
TLE epoch observation values (Epoch: 2025-11-03T16:28:30.818Z)
Latitude
-0.00003°
Longitude
110.44491°
Altitude
1,501.158 km
Speed
8.688 km/s
True Right ascension
02h 43m 01s
True Declination
0° 00' 00"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
08:02:02
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
17,991.083 km
Perigee altitude
302.234 km
Semi-major axis
15,524.796 km
Eccentricity
0.5697
Inclination
10.224°
RAAN
40.8123°
Arg. of periapsis
54.5112°
True anomaly
305.23612°
Mean anomaly
346.1451°
Eccentric anomaly
329.65416°
Mean motion
1.12203 °/min
Orbital period
320.85 mins
BSTAR
0.00058496
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Other satellites on launch #57 in the year 1981 (1981-06-19 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.CAT 3 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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2025-11-04 14:19:33.159Z | 162.406° S | 2025-11-04 14:22:33.159Z | 149.814° SSE | 10.963° | 2025-11-04 14:26:33.159Z | 138.263° SSE |
| 228 mins | 2025-11-04 20:00:33.159Z | 229.123° WSW | 2025-11-04 21:07:33.159Z | 184.179° SSW | 26.442° | 2025-11-04 23:48:33.159Z | 143° SSE |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in ascending order |
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