AC1-003, 66689
Orbit data source: Space-Track
AC1-003, 66689 is a UK payload satellite in SSO that was launched on Fri, 28 Nov 2025 UTC via an FALCON 9 launch vehicle from the Air Force Western Test Range (AFWTR). 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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66689 intel report (Beta)
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Identifier
Orbit
Country
UKRelated business
Manufacturer
INSBAE
Mission
Operational Commercial Sigint/Imaging
Bus & Motor
P10, Unknown motor
Mass
140 kg wet, 140 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Trap Box + Cyl, 0.4 m
Radar Cross Section
0.655 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 18 hours ago
TLE from 18 hours ago
0 AC1-003
1 66689U 25276Z 26238.17632330 .00002029 00000-0 10168-3 0 9995
2 66689 97.4155 310.1356 0004215 115.0375 245.1297 15.18484236 41020Epoch: 2026-08-26T04:13Z
TLE epoch observation values (Epoch: 2026-08-26T04:13:54.333Z)
Latitude
-0.00003°
Longitude
-87.77386°
Altitude
514.731 km
Speed
7.606 km/s
True Right ascension
20h 40m 32s
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
13:30:46
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
510.291 km
Perigee altitude
504.487 km
Semi-major axis
6,885.526 km
Eccentricity
0.00042
Inclination
97.4155°
RAAN
310.1356°
Arg. of periapsis
115.0375°
True anomaly
245.08589°
Mean anomaly
245.1297°
Eccentric anomaly
245.10779°
Mean motion
3.79872 °/min
Orbital period
94.77 mins
BSTAR
0.00010168
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Other satellites on launch #276 in the year 2025 (2025-11-28 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.AC1-003 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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2026-08-27 04:06:33.751Z | 109.599° ESE | 2026-08-27 04:08:33.751Z | 70.145° E | 19.523° | 2026-08-27 04:10:33.751Z | 30.098° NE |
| 4 mins | 2026-08-27 05:40:33.751Z | 223.847° SW | 2026-08-27 05:42:33.751Z | 268.194° W | 21.624° | 2026-08-27 05:44:33.751Z | 309.22° NW |
| 5 mins | 2026-08-27 17:11:33.751Z | 48.6° ENE | 2026-08-27 17:13:33.751Z | 99.729° ESE | 26.734° | 2026-08-27 17:16:33.751Z | 158.544° S |
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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