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: 2 days ago
TLE from 2 days ago
0 SECOR 1B
1 00729U 64001C 26174.70351551 -.00000012 00000-0 31038-4 0 9999
2 00729 69.9016 278.8413 0011533 64.1335 296.0957 13.95226944177614Epoch: 2026-06-23T16:53Z
TLE epoch observation values (Epoch: 2026-06-23T16:53:03.740Z)
Latitude
-0.00003°
Longitude
113.70443°
Altitude
908.985 km
Speed
7.4 km/s
True Right ascension
18h 35m 21s
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
22:45:19
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
916.828 km
Perigee altitude
900.021 km
Semi-major axis
7,286.561 km
Eccentricity
0.00115
Inclination
69.9016°
RAAN
278.8413°
Arg. of periapsis
64.1335°
True anomaly
295.97694°
Mean anomaly
296.0957°
Eccentric anomaly
296.03633°
Mean motion
3.48947 °/min
Orbital period
103.17 mins
BSTAR
0.000031038
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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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2026-06-25 15:53:18.223Z | 17.69° NNE | 2026-06-25 15:56:18.223Z | 49.176° ENE | 13.487° | 2026-06-25 15:58:18.223Z | 69.901° E |
| 10 mins | 2026-06-25 17:38:18.223Z | 339.977° N | 2026-06-25 17:42:18.223Z | 31.525° NE | 44.048° | 2026-06-25 17:48:18.223Z | 151.205° SSE |
| 4 mins | 2026-06-25 19:26:18.223Z | 274.981° WNW | 2026-06-25 19:27:18.223Z | 263.89° W | 14.15° | 2026-06-25 19:30:18.223Z | 232.447° WSW |
| 8 mins | 2026-06-26 06:57:18.223Z | 147.851° SSE | 2026-06-26 07:00:18.223Z | 109.547° ESE | 23.942° | 2026-06-26 07:05:18.223Z | 49.773° ENE |
| 9 mins | 2026-06-26 08:42:18.223Z | 236.845° WSW | 2026-06-26 08:46:18.223Z | 307.227° NW | 35.348° | 2026-06-26 08:51:18.223Z | 11.593° NNE |
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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