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: 5 hours ago
TLE from 5 hours ago
0 SECOR 1B
1 00729U 64001C 26037.62908377 .00000029 00000-0 61273-4 0 9993
2 00729 69.8987 212.8877 0016711 248.6202 111.3119 13.95210839158497Epoch: 2026-02-06T15:05Z
TLE epoch observation values (Epoch: 2026-02-06T15:05:52.837Z)
Latitude
-0.0001°
Longitude
-150.34671°
Altitude
917.176 km
Speed
7.391 km/s
True Right ascension
14h 11m 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
22:00:07
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
920.657 km
Perigee altitude
896.304 km
Semi-major axis
7,286.618 km
Eccentricity
0.00167
Inclination
69.8987°
RAAN
212.8877°
Arg. of periapsis
248.6202°
True anomaly
111.49016°
Mean anomaly
111.3119°
Eccentric anomaly
111.40105°
Mean motion
3.48943 °/min
Orbital period
103.17 mins
BSTAR
0.000061273
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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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2026-02-06 20:48:44.935Z | 19.729° NNE | 2026-02-06 20:50:44.935Z | 40.121° NE | 13.148° | 2026-02-06 20:53:44.935Z | 70.882° E |
| 10 mins | 2026-02-06 22:33:44.935Z | 341.705° N | 2026-02-06 22:37:44.935Z | 51.746° ENE | 43.823° | 2026-02-06 22:43:44.935Z | 149.557° SSE |
| 5 mins | 2026-02-07 00:20:44.935Z | 284.175° WNW | 2026-02-07 00:22:44.935Z | 262.147° W | 15.101° | 2026-02-07 00:25:44.935Z | 230.258° WSW |
| 7 mins | 2026-02-07 11:52:44.935Z | 143.735° SSE | 2026-02-07 11:55:44.935Z | 104.799° ESE | 23.347° | 2026-02-07 11:59:44.935Z | 55.714° ENE |
| 10 mins | 2026-02-07 13:36:44.935Z | 230.842° WSW | 2026-02-07 13:40:44.935Z | 285.02° WNW | 36.307° | 2026-02-07 13:46:44.935Z | 13.328° NNE |
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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