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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729 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
0.104 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 12 hours ago
TLE from 12 hours ago
0 SECOR 1B
1 00729U 64001C 25258.81358676 -.00000004 00000-0 36783-4 0 9991
2 00729 69.9012 161.3889 0011442 63.4005 296.8271 13.95185146138430Epoch: 2025-09-15T19:31Z
TLE epoch observation values (Epoch: 2025-09-15T19:31:33.896Z)
Latitude
0.00005°
Longitude
-126.51517°
Altitude
909.064 km
Speed
7.4 km/s
True Right ascension
10h 45m 33s
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
00:25:42
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
916.907 km
Perigee altitude
900.233 km
Semi-major axis
7,286.707 km
Eccentricity
0.00114
Inclination
69.9012°
RAAN
161.3889°
Arg. of periapsis
63.4005°
True anomaly
296.71002°
Mean anomaly
296.8271°
Eccentric anomaly
296.76857°
Mean motion
3.48936 °/min
Orbital period
103.17 mins
BSTAR
0.000036783
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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. |
|---|---|---|---|---|---|---|---|
| 9 mins | 2025-09-16 18:00:07.052Z | 161.16° S | 2025-09-16 18:05:07.052Z | 100.067° ESE | 26.286° | 2025-09-16 18:09:07.052Z | 50.598° ENE |
| 9 mins | 2025-09-16 19:46:07.052Z | 238.021° WSW | 2025-09-16 19:50:07.052Z | 294.776° NW | 33.17° | 2025-09-16 19:55:07.052Z | 7.743° NNE |
| 7 mins | 2025-09-17 03:03:07.052Z | 12.028° NNE | 2025-09-17 03:06:07.052Z | 47.08° ENE | 19.072° | 2025-09-17 03:10:07.052Z | 92.58° ESE |
| 10 mins | 2025-09-17 04:48:07.052Z | 328.432° NNW | 2025-09-17 04:52:07.052Z | 279.464° WNW | 42.55° | 2025-09-17 04:58:07.052Z | 167.142° S |
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 ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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