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: 14 hours ago
TLE from 14 hours ago
0 OPS 0856
1 02403U 66077A 25258.45440129 -.00000028 00000-0 -14727-1 0 9990
2 02403 90.3285 273.1817 0008790 1.0011 359.0857 8.59850353502846Epoch: 2025-09-15T10:54Z
TLE epoch observation values (Epoch: 2025-09-15T10:54:20.271Z)
Latitude
-0.00003°
Longitude
114.93842°
Altitude
3,679.573 km
Speed
6.299 km/s
True Right ascension
18h 12m 43s
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
17:11:51
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
3,692.896 km
Perigee altitude
3,675.207 km
Semi-major axis
10,062.189 km
Eccentricity
0.00088
Inclination
90.3285°
RAAN
273.1817°
Arg. of periapsis
1.0011°
True anomaly
359.08409°
Mean anomaly
359.0857°
Eccentric anomaly
359.0849°
Mean motion
2.15033 °/min
Orbital period
167.42 mins
BSTAR
-0.014727
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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. |
|---|---|---|---|---|---|---|---|
| 37 mins | 2025-09-16 00:52:27.385Z | 164.345° S | 2025-09-16 01:10:27.385Z | 88.826° E | 44.489° | 2025-09-16 01:29:27.385Z | 359.673° N |
| 28 mins | 2025-09-16 03:46:27.385Z | 239.519° WSW | 2025-09-16 03:59:27.385Z | 288.777° WNW | 25.277° | 2025-09-16 04:14:27.385Z | 344.743° N |
| 20 mins | 2025-09-16 10:06:27.385Z | 27.261° NE | 2025-09-16 10:15:27.385Z | 58.656° ENE | 16.416° | 2025-09-16 10:26:27.385Z | 96.392° ESE |
| 36 mins | 2025-09-16 12:49:27.385Z | 3.924° NNE | 2025-09-16 13:07:27.385Z | 95.307° ESE | 44.306° | 2025-09-16 13:25:27.385Z | 178.095° S |
| 28 mins | 2025-09-16 15:37:27.385Z | 349.582° N | 2025-09-16 15:50:27.385Z | 302.022° NW | 27.2° | 2025-09-16 16:05:27.385Z | 246.876° WSW |
| 30 mins | 2025-09-16 23:18:27.385Z | 123.52° SE | 2025-09-16 23:33:27.385Z | 64.499° ENE | 32.1° | 2025-09-16 23:48:27.385Z | 7.393° NNE |
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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