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: 12 hours ago
TLE from 12 hours ago
0 SECOR 1B
1 00729U 64001C 25342.26416574 .00000048 00000-0 75399-4 0 9999
2 00729 69.9012 342.3797 0016131 313.3396 46.6363 13.95200697150075Epoch: 2025-12-08T06:20Z
TLE epoch observation values (Epoch: 2025-12-08T06:20:23.919Z)
Latitude
-0.00007°
Longitude
170.01432°
Altitude
904.703 km
Speed
7.404 km/s
True Right ascension
22h 49m 31s
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
16:21:17
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
920.27 km
Perigee altitude
896.762 km
Semi-major axis
7,286.653 km
Eccentricity
0.00161
Inclination
69.9012°
RAAN
342.3797°
Arg. of periapsis
313.3396°
True anomaly
46.77087°
Mean anomaly
46.6363°
Eccentric anomaly
46.70357°
Mean motion
3.4894 °/min
Orbital period
103.17 mins
BSTAR
0.000075399
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Other satellites on launch #1 in the year 1964 (1964-01-11 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 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 | 2025-12-09 01:22:45.061Z | 193.211° SSW | 2025-12-09 01:27:45.061Z | 132.174° SE | 43.188° | 2025-12-09 01:33:45.061Z | 29.272° NE |
| 6 mins | 2025-12-09 03:11:45.061Z | 279.253° WNW | 2025-12-09 03:14:45.061Z | 316.444° NNW | 18.813° | 2025-12-09 03:17:45.061Z | 350.037° N |
| 10 mins | 2025-12-09 10:25:45.061Z | 352.912° N | 2025-12-09 10:30:45.061Z | 69.778° E | 33.696° | 2025-12-09 10:35:45.061Z | 128.225° SE |
| 9 mins | 2025-12-09 12:11:45.061Z | 307.75° NW | 2025-12-09 12:15:45.061Z | 256.956° W | 26.263° | 2025-12-09 12:20:45.061Z | 198.723° SSW |
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 |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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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 |
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