OPS 9431 (DSCS 2-1), 5587
Orbit data source: Space-Track
OPS 9431 (DSCS 2-1), 5587 is an American payload satellite in GEO that was launched on Wed, 03 Nov 1971 UTC via a TITAN IIIC launch vehicle from the Air Force Eastern Test Range (AFETR). 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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5587 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
TRW
Mission
Non-operational Defense Communications
Bus & Motor
DSCS II, Unknown motor
Mass
526 kg wet, ~500 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Cyl, Unknown HBR
Radar Cross Section
10.695 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 11 hours ago
TLE from 11 hours ago
0 OPS 9431 (DSCS 2-1)
1 05587U 71095A 25241.22076793 -.00000088 00000-0 00000-0 0 9994
2 05587 2.3379 262.7371 0005507 333.7530 75.7918 1.00284194119096Epoch: 2025-08-29T05:17Z
TLE epoch observation values (Epoch: 2025-08-29T05:17:54.349Z)
Latitude
1.78192°
Longitude
-104.82706°
Altitude
35,776.765 km
Speed
3.075 km/s
True Right ascension
20h 49m 17s
True Declination
1° 46' 48"
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
08:10:49
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
35,807.403 km
Perigee altitude
35,760.966 km
Semi-major axis
42,162.321 km
Eccentricity
0.00055
Inclination
2.3379°
RAAN
262.7371°
Arg. of periapsis
333.753°
True anomaly
75.85299°
Mean anomaly
75.7918°
Eccentric anomaly
75.82239°
Mean motion
0.2507 °/min
Orbital period
1,435.97 mins
BSTAR
0
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Other satellites on launch #95 in the year 1971 (1971-11-03 UTC)
OPS 9431 (DSCS 2-1) Visibility forecast
Observer location: undefined°, undefined°
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. |
|---|---|---|---|---|---|---|---|
| 1440 mins | 2025-08-29 16:38:44.647Z | 179.707° S | 2025-08-30 07:54:44.647Z | 179.413° S | 35.928° | 2025-08-30 16:38:44.647Z | 179.642° S |
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5587 neighbors
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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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