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
CONE + CYL, 1.1 m
Radar Cross Section
Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 17 hours ago
TLE from 17 hours ago
0 OPS 0856
1 02403U 66077A 26303.31476505 -.00000008 00000-0 -45112-2 0 9995
2 02403 90.3290 277.9994 0005730 310.7307 49.3047 8.59841091538072Epoch: 2026-10-30T07:33Z
TLE epoch observation values (Epoch: 2026-10-30T07:33:15.700Z)
Latitude
0.00001°
Longitude
126.04737°
Altitude
3,684.733 km
Speed
6.296 km/s
True Right ascension
18h 31m 59s
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
20:17:18
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
3,689.89 km
Perigee altitude
3,678.358 km
Semi-major axis
10,062.261 km
Eccentricity
0.00057
Inclination
90.329°
RAAN
277.9994°
Arg. of periapsis
310.7307°
True anomaly
49.35451°
Mean anomaly
49.3047°
Eccentric anomaly
49.3296°
Mean motion
2.1503 °/min
Orbital period
167.42 mins
BSTAR
-0.0045112
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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. |
|---|---|---|---|---|---|---|---|
| 14 mins | 2026-10-31 00:40:25.753Z | 300.237° NW | 2026-10-31 00:40:25.753Z | 300.237° NW | 40.722° | 2026-10-31 00:54:25.753Z | 349.848° N |
| 36 mins | 2026-10-31 09:28:25.753Z | 7.308° NNE | 2026-10-31 09:46:25.753Z | 86.534° E | 56.286° | 2026-10-31 10:04:25.753Z | 160.919° S |
| 32 mins | 2026-10-31 12:16:25.753Z | 353.061° N | 2026-10-31 12:31:25.753Z | 293.498° NW | 44.82° | 2026-10-31 12:48:25.753Z | 226.967° WSW |
| 25 mins | 2026-10-31 20:02:25.753Z | 100.61° ESE | 2026-10-31 20:14:25.753Z | 56.078° ENE | 26.428° | 2026-10-31 20:27:25.753Z | 10.307° NNE |
| 36 mins | 2026-10-31 22:39:25.753Z | 175.101° S | 2026-10-31 22:57:25.753Z | 294.875° NW | 85.988° | 2026-10-31 23:15:25.753Z | 357.718° N |
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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