AC1-001, 66744
Orbit data source: Space-Track
AC1-001, 66744 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.
Focus sentinelFocus sentinel
Request partner network tasking
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
66744 intel report (Beta)
Focus sentinelFocus sentinel
Edit Public Description
Focus sentinelFocus sentinel
Create New Watchlist
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, 0.5 m
Radar Cross Section
0.655 m²
Expand to show TLE details & historyLast TLE update: 17 hours ago
TLE from 17 hours ago
0 AC1-001
1 66744U 25276CG 26092.17739901 .00003440 00000-0 17252-3 0 9996
2 66744 97.4241 166.9431 0001270 262.6378 97.4711 15.17999506 18875Epoch: 2026-04-02T04:15Z
TLE epoch observation values (Epoch: 2026-04-02T04:15:27.274Z)
Latitude
-0.00009°
Longitude
-87.45015°
Altitude
515.088 km
Speed
7.606 km/s
True Right ascension
11h 07m 46s
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
02:58:57
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
509.731 km
Perigee altitude
507.982 km
Semi-major axis
6,886.994 km
Eccentricity
0.00013
Inclination
97.4241°
RAAN
166.9431°
Arg. of periapsis
262.6378°
True anomaly
97.48553°
Mean anomaly
97.4711°
Eccentric anomaly
97.47831°
Mean motion
3.79751 °/min
Orbital period
94.8 mins
BSTAR
0.00017252
Loading maneuver chart data...
Computing Atmospheric mass density...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Other satellites on launch #276 in the year 2025 (2025-11-28 UTC)
Did you know?
You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.AC1-001 Visibility forecast
Loading observer location...
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 | 2026-04-03 04:08:30.981Z | 109.93° ESE | 2026-04-03 04:10:30.981Z | 71.571° E | 19.27° | 2026-04-03 04:12:30.981Z | 31.382° NE |
| 4 mins | 2026-04-03 05:42:30.981Z | 221.919° SW | 2026-04-03 05:44:30.981Z | 265.848° W | 22.162° | 2026-04-03 05:46:30.981Z | 308.377° NW |
| 5 mins | 2026-04-03 17:13:30.981Z | 44.463° NE | 2026-04-03 17:15:30.981Z | 88.896° E | 26.355° | 2026-04-03 17:18:30.981Z | 155.058° 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 descending order |
|---|
CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
Authenticating...
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 descending order |
|---|