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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Identifier
Orbit
Country
USRelated business
Manufacturer
ITT
Mission
Spacecraft
Bus & Motor
SECOR, Unknown motor
Mass
18 kg wet, 18 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
BOX, 1.1 m
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 2 days ago
TLE from 2 days ago
0 SECOR 8 (EGRS 8)
1 02520U 66089B 26257.38832791 -.00000006 00000-0 -39638-2 0 9990
2 02520 89.8569 30.9760 0014362 217.9966 141.9873 8.58893794389618Epoch: 2026-09-14T09:19Z
TLE epoch observation values (Epoch: 2026-09-14T09:19:11.531Z)
Latitude
0.00004°
Longitude
-102.19139°
Altitude
3,707.295 km
Speed
6.284 km/s
True Right ascension
02h 03m 54s
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
19:23:43
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
3,705.986 km
Perigee altitude
3,677.062 km
Semi-major axis
10,069.661 km
Eccentricity
0.00144
Inclination
89.8569°
RAAN
30.976°
Arg. of periapsis
217.9966°
True anomaly
142.08851°
Mean anomaly
141.9873°
Eccentric anomaly
142.03792°
Mean motion
2.14793 °/min
Orbital period
167.6 mins
BSTAR
-0.0039638
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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. |
|---|---|---|---|---|---|---|---|
| 23 mins | 2026-09-16 06:14:55.058Z | 94.106° ESE | 2026-09-16 06:26:55.058Z | 52.807° ENE | 21.45° | 2026-09-16 06:37:55.058Z | 14.741° NNE |
| 37 mins | 2026-09-16 08:50:55.058Z | 167.204° S | 2026-09-16 09:08:55.058Z | 87.167° E | 82.429° | 2026-09-16 09:27:55.058Z | 359.906° N |
| 29 mins | 2026-09-16 11:44:55.058Z | 241.367° WSW | 2026-09-16 11:58:55.058Z | 292.86° NW | 26.702° | 2026-09-16 12:13:55.058Z | 346.678° N |
| 23 mins | 2026-09-16 18:03:55.058Z | 21.49° NNE | 2026-09-16 18:14:55.058Z | 60.062° ENE | 19.483° | 2026-09-16 18:26:55.058Z | 102.063° ESE |
| 36 mins | 2026-09-16 20:48:55.058Z | 2.571° NNE | 2026-09-16 21:06:55.058Z | 107.066° ESE | 82.462° | 2026-09-16 21:24:55.058Z | 181.548° SSW |
| 26 mins | 2026-09-16 23:37:55.058Z | 346.119° N | 2026-09-16 23:49:55.058Z | 301.862° NW | 28.089° | 2026-09-17 00:03:55.058Z | 251.47° W |
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 descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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