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.
Focus sentinelFocus sentinel
Request partner network tasking
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
1315 intel report (Beta)
Focus sentinelFocus sentinel
Edit Public Description
Focus sentinelFocus sentinel
Edit Sat Name
Focus sentinelFocus sentinel
Create New Watchlist
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 01315U 65027B 26264.86871715 .00000071 00000-0 23531-3 0 9998
2 01315 90.2598 17.7879 0029724 309.9068 179.2687 12.92669143899417Epoch: 2026-09-21T20:50Z
TLE epoch observation values (Epoch: 2026-09-21T20:50:57.161Z)
Latitude
50.91023°
Longitude
-115.37443°
Altitude
1,321.949 km
Speed
7.19 km/s
True Right ascension
13h 12m 25s
True Declination
50° 45' 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
23:42:38
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,310.87 km
Perigee altitude
1,265.296 km
Semi-major axis
7,666.22 km
Eccentricity
0.00297
Inclination
90.2598°
RAAN
17.7879°
Arg. of periapsis
309.9068°
True anomaly
179.27303°
Mean anomaly
179.2687°
Eccentric anomaly
179.27087°
Mean motion
3.23349 °/min
Orbital period
111.33 mins
BSTAR
0.00023531
Loading maneuver chart data...
Computing Atmospheric mass density...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Other satellites on launch #27 in the year 1965 (1965-04-03 UTC)
Did you know?
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
Loading observer location...
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. |
|---|---|---|---|---|---|---|---|
| 14 mins | 2026-09-22 07:25:32.005Z | 153.936° SSE | 2026-09-22 07:32:32.005Z | 70.673° E | 54.679° | 2026-09-22 07:39:32.005Z | 6.532° NNE |
| 11 mins | 2026-09-22 09:18:32.005Z | 229.441° WSW | 2026-09-22 09:23:32.005Z | 277.846° WNW | 27.869° | 2026-09-22 09:29:32.005Z | 333.097° NNW |
| 12 mins | 2026-09-22 19:06:32.005Z | 24.607° NE | 2026-09-22 19:11:32.005Z | 79.18° E | 40.594° | 2026-09-22 19:18:32.005Z | 151.242° SSE |
| 12 mins | 2026-09-22 20:57:32.005Z | 340.683° N | 2026-09-22 21:02:32.005Z | 288.515° WNW | 38.74° | 2026-09-22 21:09:32.005Z | 219.535° SW |
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 |
|---|
CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
Authenticating...
Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in descending order |
|---|