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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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Iframe URL

https://www.satcat.com/sats-embedded/66689?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

66689, 2025-276Z

Orbit

SSO

Country

Related business

BAE Systems Digital Intelligence (Detica) (UK)

Manufacturer

INSBAE

Mission

Operational Commercial Sigint/Imaging

Bus & Motor

P10, Unknown motor

Mass

140 kg wet, 140 kg dry

Launch date (UTC)

2025-11-28 (4 months ago)

Launch vehicle

FALCON 9

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Trap Box + Cyl, 0.5 m

Radar Cross Section

0.655 m²

Expand to show TLE details & history
Last TLE update: 15 hours ago

TLE from 15 hours ago

0 AC1-003
1 66689U 25276Z   26092.18704729  .00003560  00000-0  17900-3 0  9998
2 66689  97.4245 166.9304 0001237 285.2073  74.9024 15.17884044 18879

Epoch: 2026-04-02T04:29Z

TLE epoch observation values (Epoch: 2026-04-02T04:29:20.885Z)

Latitude

-0.00006°

Longitude

-90.94575°

Altitude

515.102 km

Speed

7.606 km/s

True Right ascension

11h 07m 43s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

01:14:07

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

510.058 km

Perigee altitude

508.354 km

Semi-major axis

6,887.343 km

Eccentricity

0.00012

Inclination

97.4245°

RAAN

166.9304°

Arg. of periapsis

285.2073°

True anomaly

74.91609°

Mean anomaly

74.9024°

Eccentric anomaly

74.90924°

Mean motion

3.79722 °/min

Orbital period

94.81 mins

BSTAR

0.000179

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Other satellites on launch #276 in the year 2025 (2025-11-28 UTC)

FORESAIL-1 PRIME, 66778

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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.
5 mins	2026-04-03 04:21:58.760Z	124.886° SE	2026-04-03 04:23:58.760Z	84.213° E	25.639°	2026-04-03 04:26:58.760Z	16.14° NNE
5 mins	2026-04-03 17:27:58.760Z	39.981° NE	2026-04-03 17:29:58.760Z	112.736° SE	35.162°	2026-04-03 17:32:58.760Z	171.913° S

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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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Check out AC1-003, 66689 on other resources

View AC1-003, 66689 on NASA - NSSDCA Website

View AC1-003, 66689 on Heavens-Above

View AC1-003, 66689 on Keep Track

View AC1-003, 66689 on Celestrak

View AC1-003, 66689 on Gunter's Space Page

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

AC1-003, 66689

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 15 hours ago

TLE from 15 hours ago

TLE epoch observation values (Epoch: 2026-04-02T04:29:20.885Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #276 in the year 2025 (2025-11-28 UTC)

AC1-003 Visibility forecast

Co-orbital & Co-planar RSOs

Check out AC1-003, 66689 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 15 hours ago