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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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
LMSC
Mission
Defense Early Warn
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 + 2 Pan, 1.5 m
Radar Cross Section
4.418 m², 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 25256.01132119 -.00000028 00000-0 -14798-1 0 9995
2 02403 90.3289 273.1533 0008820 3.5671 356.5243 8.59850478502634Epoch: 2025-09-13T00:16Z
TLE epoch observation values (Epoch: 2025-09-13T00:16:18.15Z)
Latitude
0.00003°
Longitude
-83.17313°
Altitude
3,679.557 km
Speed
6.299 km/s
True Right ascension
18h 12m 36s
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
13:40:04
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
3,692.926 km
Perigee altitude
3,675.176 km
Semi-major axis
10,062.188 km
Eccentricity
0.00088
Inclination
90.3289°
RAAN
273.1533°
Arg. of periapsis
3.5671°
True anomaly
356.51817°
Mean anomaly
356.5243°
Eccentric anomaly
356.52123°
Mean motion
2.15033 °/min
Orbital period
167.42 mins
BSTAR
-0.014798
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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. |
|---|---|---|---|---|---|---|---|
| 25 mins | 2025-09-13 22:47:06.715Z | 101.855° ESE | 2025-09-13 23:00:06.715Z | 54.849° ENE | 23.382° | 2025-09-13 23:12:06.715Z | 12.091° NNE |
| 36 mins | 2025-09-14 01:25:06.715Z | 173.929° S | 2025-09-14 01:42:06.715Z | 214.392° SW | 44.96° | 2025-09-14 02:01:06.715Z | 358.052° N |
| 25 mins | 2025-09-14 04:21:06.715Z | 252.991° W | 2025-09-14 04:33:06.715Z | 296.451° NW | 20.361° | 2025-09-14 04:46:06.715Z | 342.303° N |
| 25 mins | 2025-09-14 10:37:06.715Z | 21.665° NNE | 2025-09-14 10:49:06.715Z | 65.478° ENE | 21.184° | 2025-09-14 11:02:06.715Z | 111.881° ESE |
| 37 mins | 2025-09-14 13:21:06.715Z | 1.811° NNE | 2025-09-14 13:39:06.715Z | 0.46° NNE | 44.997° | 2025-09-14 13:58:06.715Z | 187.738° SSW |
| 24 mins | 2025-09-14 16:10:06.715Z | 346.477° N | 2025-09-14 16:22:06.715Z | 303.094° NW | 22.746° | 2025-09-14 16:34:06.715Z | 260.404° W |
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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