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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Edit Public Description
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: 8 hours ago
TLE from 8 hours ago
0 SECOR 1B
1 00729U 64001C 25290.93213720 .00000035 00000-0 65555-4 0 9992
2 00729 69.8987 92.4904 0013024 16.3393 343.8129 13.95190878142918Epoch: 2025-10-17T22:22Z
TLE epoch observation values (Epoch: 2025-10-17T22:22:16.654Z)
Latitude
0.00003°
Longitude
90.2506°
Altitude
903.684 km
Speed
7.405 km/s
True Right ascension
06h 09m 57s
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
00:52:22
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
918.04 km
Perigee altitude
899.06 km
Semi-major axis
7,286.687 km
Eccentricity
0.0013
Inclination
69.8987°
RAAN
92.4904°
Arg. of periapsis
16.3393°
True anomaly
343.77123°
Mean anomaly
343.8129°
Eccentric anomaly
343.79207°
Mean motion
3.48938 °/min
Orbital period
103.17 mins
BSTAR
0.000065555
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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 | 2025-10-18 12:14:54.086Z | 197.993° SSW | 2025-10-18 12:19:54.086Z | 160.951° S | 44.002° | 2025-10-18 12:25:54.086Z | 27.153° NE |
| 6 mins | 2025-10-18 14:03:54.086Z | 279.605° WNW | 2025-10-18 14:06:54.086Z | 314.209° NW | 17.069° | 2025-10-18 14:09:54.086Z | 347.521° N |
| 10 mins | 2025-10-18 21:17:54.086Z | 350.152° N | 2025-10-18 21:22:54.086Z | 68.978° E | 36.124° | 2025-10-18 21:27:54.086Z | 131.862° SE |
| 7 mins | 2025-10-18 23:04:54.086Z | 297.944° NW | 2025-10-18 23:07:54.086Z | 258.203° W | 23.653° | 2025-10-18 23:11:54.086Z | 209.01° 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 ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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