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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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: 10 hours ago
TLE from 10 hours ago
0 SECOR 4 (EGRS 4)
1 1315U 65027B 26310.69661980 .00000021 00000-0 50675-4 0 9997
2 1315 90.2606 18.8735 0031018 185.1182 329.5445 12.92669716905337Epoch: 2026-11-06T16:43Z
TLE epoch observation values (Epoch: 2026-11-06T16:43:07.950Z)
Latitude
25.54545°
Longitude
-97.69821°
Altitude
1,273.539 km
Speed
7.231 km/s
True Right ascension
13h 15m 59s
True Declination
25° 25' 15"
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
22:37:56
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,311.86 km
Perigee altitude
1,264.302 km
Semi-major axis
7,666.218 km
Eccentricity
0.0031
Inclination
90.2606°
RAAN
18.8735°
Arg. of periapsis
185.1182°
True anomaly
329.36373°
Mean anomaly
329.5445°
Eccentric anomaly
329.45418°
Mean motion
3.23349 °/min
Orbital period
111.33 mins
BSTAR
0.000050675
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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. |
|---|---|---|---|---|---|---|---|
| 8 mins | 2026-11-07 03:14:08.430Z | 98.243° ESE | 2026-11-07 03:18:08.430Z | 65.52° ENE | 16.082° | 2026-11-07 03:22:08.430Z | 33.836° NE |
| 14 mins | 2026-11-07 05:01:08.430Z | 174.297° S | 2026-11-07 05:08:08.430Z | 15.513° NNE | 84.667° | 2026-11-07 05:15:08.430Z | 358.047° N |
| 7 mins | 2026-11-07 06:57:08.430Z | 260.494° W | 2026-11-07 07:00:08.430Z | 286.244° WNW | 16.318° | 2026-11-07 07:04:08.430Z | 318.64° NNW |
| 14 mins | 2026-11-07 16:41:08.430Z | 9.557° NNE | 2026-11-07 16:48:08.430Z | 107.721° ESE | 65.208° | 2026-11-07 16:55:08.430Z | 172.047° S |
| 9 mins | 2026-11-07 18:34:08.430Z | 326.557° NNW | 2026-11-07 18:38:08.430Z | 288.469° WNW | 23.035° | 2026-11-07 18:43:08.430Z | 243.78° WSW |
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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