SECOR 8 (EGRS 8), 2520
Orbit data source: Space-Track
SECOR 8 (EGRS 8), 2520 is an American payload satellite in LEO that was launched on Wed, 05 Oct 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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2520 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
ITT
Mission
Defense Geodetic
Bus & Motor
SECOR, Unknown motor
Mass
18 kg wet, 18 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box, 0.2 m
Radar Cross Section
0.095 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 3 days ago
TLE from 3 days ago
0 SECOR 8 (EGRS 8)
1 02520U 66089B 25257.38169167 .00000005 00000-0 17733-2 0 9998
2 02520 89.8331 33.0593 0014657 222.3397 137.6323 8.58894595358278Epoch: 2025-09-14T09:09Z
TLE epoch observation values (Epoch: 2025-09-14T09:09:38.16Z)
Latitude
-0.00004°
Longitude
-97.95121°
Altitude
3,706.801 km
Speed
6.284 km/s
True Right ascension
02h 12m 14s
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
05:36:14
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
3,706.277 km
Perigee altitude
3,676.759 km
Semi-major axis
10,069.655 km
Eccentricity
0.00147
Inclination
89.8331°
RAAN
33.0593°
Arg. of periapsis
222.3397°
True anomaly
137.74533°
Mean anomaly
137.6323°
Eccentric anomaly
137.68883°
Mean motion
2.14794 °/min
Orbital period
167.6 mins
BSTAR
0.0017733
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Other satellites on launch #89 in the year 1966 (1966-10-05 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.SECOR 8 (EGRS 8) 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. |
|---|---|---|---|---|---|---|---|
| 16 mins | 2025-09-17 12:53:53.127Z | 279.311° WNW | 2025-09-17 13:01:53.127Z | 305.968° NW | 13.347° | 2025-09-17 13:09:53.127Z | 332.691° NNW |
| 32 mins | 2025-09-17 19:01:53.127Z | 12.855° NNE | 2025-09-17 19:17:53.127Z | 75.818° E | 29.724° | 2025-09-17 19:33:53.127Z | 135.479° SSE |
| 35 mins | 2025-09-17 21:48:53.127Z | 357.537° N | 2025-09-17 22:05:53.127Z | 280.388° WNW | 42.929° | 2025-09-17 22:23:53.127Z | 203.562° SW |
| 16 mins | 2025-09-18 00:38:53.127Z | 339.338° N | 2025-09-18 00:46:53.127Z | 312.184° NW | 15.238° | 2025-09-18 00:54:53.127Z | 285.09° WNW |
| 13 mins | 2025-09-18 05:44:53.127Z | 64.861° ENE | 2025-09-18 05:50:53.127Z | 44.587° NE | 13.726° | 2025-09-18 05:57:53.127Z | 21.34° NNE |
| 35 mins | 2025-09-18 08:13:53.127Z | 151.895° SSE | 2025-09-18 08:30:53.127Z | 80.481° E | 41.903° | 2025-09-18 08:48:53.127Z | 2.675° NNE |
| 32 mins | 2025-09-18 11:03:53.127Z | 223.427° SW | 2025-09-18 11:18:53.127Z | 283.499° WNW | 31.75° | 2025-09-18 11:35:53.127Z | 349.869° N |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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