SECOR 4 (EGRS 4), 1315
Orbit data source: Space-Track
SECOR 4 (EGRS 4), 1315 is an American payload satellite in LEO that was launched on Sat, 03 Apr 1965 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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1315 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
0.105 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 16 hours ago
TLE from 16 hours ago
0 SECOR 4 (EGRS 4)
1 01315U 65027B 25261.25389803 -.00000050 00000-0 -21013-3 0 9991
2 01315 90.2509 9.4215 0030953 187.3382 200.7495 12.92659654851796Epoch: 2025-09-18T06:05Z
TLE epoch observation values (Epoch: 2025-09-18T06:05:36.789Z)
Latitude
27.99991°
Longitude
-79.53267°
Altitude
1,316.631 km
Speed
7.191 km/s
True Right ascension
00h 37m 09s
True Declination
27° 52' 05"
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
14:50:43
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,311.85 km
Perigee altitude
1,264.391 km
Semi-major axis
7,666.257 km
Eccentricity
0.0031
Inclination
90.2509°
RAAN
9.4215°
Arg. of periapsis
187.3382°
True anomaly
200.62429°
Mean anomaly
200.7495°
Eccentric anomaly
200.68685°
Mean motion
3.23346 °/min
Orbital period
111.34 mins
BSTAR
-0.00021013
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Other satellites on launch #27 in the year 1965 (1965-04-03 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 4 (EGRS 4) 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. |
|---|---|---|---|---|---|---|---|
| 11 mins | 2025-09-19 06:13:54.774Z | 120.179° SE | 2025-09-19 06:18:54.774Z | 76.431° E | 23.153° | 2025-09-19 06:24:54.774Z | 23.033° NE |
| 13 mins | 2025-09-19 08:03:54.774Z | 194.19° SSW | 2025-09-19 08:09:54.774Z | 276.553° WNW | 41.452° | 2025-09-19 08:16:54.774Z | 350.08° N |
| 8 mins | 2025-09-19 17:53:54.774Z | 44.557° NE | 2025-09-19 17:57:54.774Z | 79.515° E | 16.373° | 2025-09-19 18:01:54.774Z | 112.705° SE |
| 13 mins | 2025-09-19 19:43:54.774Z | 0.065° NNE | 2025-09-19 19:49:54.774Z | 230.511° WSW | 44.558° | 2025-09-19 19:56:54.774Z | 188.413° SSW |
| 6 mins | 2025-09-19 21:36:54.774Z | 314.349° NW | 2025-09-19 21:38:54.774Z | 297.851° NW | 13.687° | 2025-09-19 21:42:54.774Z | 265.272° 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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