OPS 0856, 2403
Orbit data source: Space-Track
OPS 0856, 2403 is a payload satellite owned by USAF SSD (US) in LEO that was launched on Fri, 19 Aug 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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2403 intel report (Beta)
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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: 21 hours ago
TLE from 21 hours ago
0 OPS 0856
1 02403U 66077A 26111.35630134 -.00000001 00000-0 -10602-2 0 9995
2 02403 90.3311 275.7455 0007806 136.9442 223.2022 8.59841119521572Epoch: 2026-04-21T08:33Z
TLE epoch observation values (Epoch: 2026-04-21T08:33:04.435Z)
Latitude
0.00004°
Longitude
-61.95624°
Altitude
3,694.222 km
Speed
6.29 km/s
True Right ascension
18h 22m 58s
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
12:55:05
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
3,691.978 km
Perigee altitude
3,676.269 km
Semi-major axis
10,062.261 km
Eccentricity
0.00078
Inclination
90.3311°
RAAN
275.7455°
Arg. of periapsis
136.9442°
True anomaly
223.14101°
Mean anomaly
223.2022°
Eccentric anomaly
223.1716°
Mean motion
2.1503 °/min
Orbital period
167.42 mins
BSTAR
-0.0010602
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Other satellites on launch #77 in the year 1966 (1966-08-19 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.OPS 0856 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. |
|---|---|---|---|---|---|---|---|
| 35 mins | 2026-04-22 09:43:19.034Z | 140.869° SSE | 2026-04-22 10:01:19.034Z | 67.592° E | 38.086° | 2026-04-22 10:18:19.034Z | 3.385° NNE |
| 35 mins | 2026-04-22 12:30:19.034Z | 208.198° SW | 2026-04-22 12:47:19.034Z | 280.183° WNW | 36.879° | 2026-04-22 13:05:19.034Z | 352.557° N |
| 34 mins | 2026-04-22 21:39:19.034Z | 10.159° NNE | 2026-04-22 21:56:19.034Z | 85.26° E | 37.2° | 2026-04-22 22:13:19.034Z | 153.722° SSE |
| 33 mins | 2026-04-23 00:26:19.034Z | 354.443° N | 2026-04-23 00:42:19.034Z | 286.653° WNW | 37.757° | 2026-04-23 00:59:19.034Z | 220.185° SW |
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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