OPS 1920, 2481
Orbit data source: Space-Track
OPS 1920, 2481 is a payload satellite owned by USAF SSD (US) in LEO that was launched on Wed, 05 Oct 1966 UTC via an ATLAS SLV-3 AGENA D 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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2481 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
LMSC
Mission
Spacecraft
Bus & Motor
MIDAS, Unknown motor
Mass
~2,000 kg wet, ~1,000 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: 9 hours ago
TLE from 9 hours ago
0 OPS 1920
1 02481U 66089A 25352.56739308 .00000004 00000-0 98197-3 0 9993
2 02481 89.8355 32.4062 0033012 140.9494 219.3748 8.59254976857157Epoch: 2025-12-18T13:37Z
TLE epoch observation values (Epoch: 2025-12-18T13:37:02.762Z)
Latitude
-0.00004°
Longitude
100.72365°
Altitude
3,718.809 km
Speed
6.276 km/s
True Right ascension
02h 09m 37s
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
21:08:50
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
3,721.934 km
Perigee altitude
3,655.468 km
Semi-major axis
10,066.838 km
Eccentricity
0.0033
Inclination
89.8355°
RAAN
32.4062°
Arg. of periapsis
140.9494°
True anomaly
219.13558°
Mean anomaly
219.3748°
Eccentric anomaly
219.25511°
Mean motion
2.14884 °/min
Orbital period
167.53 mins
BSTAR
0.00098197
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Other satellites on launch #89 in the year 1966 (1966-10-05 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.OPS 1920 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. |
|---|---|---|---|---|---|---|---|
| 30 mins | 2025-12-19 00:54:11.885Z | 118.851° SE | 2025-12-19 01:09:11.885Z | 64.058° ENE | 29.153° | 2025-12-19 01:24:11.885Z | 8.638° NNE |
| 36 mins | 2025-12-19 03:36:11.885Z | 187.339° SSW | 2025-12-19 03:54:11.885Z | 278.866° WNW | 43.518° | 2025-12-19 04:12:11.885Z | 356.354° N |
| 17 mins | 2025-12-19 06:38:11.885Z | 276.15° WNW | 2025-12-19 06:46:11.885Z | 303.341° NW | 14.462° | 2025-12-19 06:55:11.885Z | 333.969° NNW |
| 30 mins | 2025-12-19 12:47:11.885Z | 14.735° NNE | 2025-12-19 13:02:11.885Z | 73.782° E | 28.171° | 2025-12-19 13:17:11.885Z | 130.502° SE |
| 35 mins | 2025-12-19 15:33:11.885Z | 358.331° N | 2025-12-19 15:50:11.885Z | 285.813° WNW | 43.53° | 2025-12-19 16:08:11.885Z | 200.906° SSW |
| 18 mins | 2025-12-19 18:23:11.885Z | 340.56° N | 2025-12-19 18:32:11.885Z | 309.411° NW | 16.238° | 2025-12-19 18:41:11.885Z | 278.815° WNW |
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 |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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