SECOR 1B, 729
Orbit data source: Space-Track
SECOR 1B, 729 is an American payload satellite in LEO that was launched on Sat, 11 Jan 1964 UTC via a THOR SLV-2A 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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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
Unknown
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 1 day ago
TLE from 1 day ago
0 SECOR 1B
1 00729U 64001C 26094.40906956 .00000023 00000-0 56295-4 0 9995
2 00729 69.8987 91.0870 0014006 183.8968 176.2030 13.95218440166410Epoch: 2026-04-04T09:49Z
TLE epoch observation values (Epoch: 2026-04-04T09:49:03.609Z)
Latitude
-0.00003°
Longitude
111.09269°
Altitude
922.892 km
Speed
7.386 km/s
True Right ascension
06h 04m 20s
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
16:11:01
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
918.66 km
Perigee altitude
898.249 km
Semi-major axis
7,286.591 km
Eccentricity
0.0014
Inclination
69.8987°
RAAN
91.087°
Arg. of periapsis
183.8968°
True anomaly
176.21361°
Mean anomaly
176.203°
Eccentric anomaly
176.20831°
Mean motion
3.48945 °/min
Orbital period
103.17 mins
BSTAR
0.000056295
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Other satellites on launch #1 in the year 1964 (1964-01-11 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 1B 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 | 2026-04-05 10:27:33.458Z | 340.455° N | 2026-04-05 10:33:33.458Z | 84.429° E | 42.588° | 2026-04-05 10:38:33.458Z | 145.78° SSE |
| 5 mins | 2026-04-05 12:16:33.458Z | 280.525° WNW | 2026-04-05 12:18:33.458Z | 256.786° W | 16.218° | 2026-04-05 12:21:33.458Z | 224.873° SW |
| 7 mins | 2026-04-05 23:48:33.458Z | 138.219° SSE | 2026-04-05 23:51:33.458Z | 99.18° ESE | 21.68° | 2026-04-05 23:55:33.458Z | 54.464° ENE |
| 9 mins | 2026-04-06 01:32:33.458Z | 229.498° WSW | 2026-04-06 01:36:33.458Z | 296.117° NW | 38.267° | 2026-04-06 01:41:33.458Z | 12.516° NNE |
| 5 mins | 2026-04-06 08:50:33.458Z | 24.902° NE | 2026-04-06 08:52:33.458Z | 48.032° ENE | 15.823° | 2026-04-06 08:55:33.458Z | 80.479° E |
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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