LES 9, 8747
Orbit data source: Space-Track
LES 9, 8747 is a payload satellite owned by SAMSO (US) in GEO that was launched on Mon, 15 Mar 1976 UTC via a TITAN IIIC launch vehicle from the Air Force Eastern Test Range (AFETR). 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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8747 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
MIT-LL
Mission
Non-operational spacecraft
Bus & Motor
LES, Unknown motor
Mass
420 kg wet, 366 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Unknown
Radar Cross Section
Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 1 day ago
TLE from 1 day ago
0 LES 9
1 8747U 76023B 25304.29455617 -.00000093 00000-0 00000+0 0 9999
2 8747 21.9363 39.9666 0025415 176.0388 184.6269 1.00278055127386Epoch: 2025-10-31T07:04Z
TLE epoch observation values (Epoch: 2025-10-31T07:04:09.653Z)
Latitude
0.24164°
Longitude
-105.34984°
Altitude
35,891.729 km
Speed
3.067 km/s
True Right ascension
02h 42m 07s
True Declination
0° 14' 29"
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
11:27:07
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
35,892.848 km
Perigee altitude
35,678.53 km
Semi-major axis
42,163.826 km
Eccentricity
0.00254
Inclination
21.9363°
RAAN
39.9666°
Arg. of periapsis
176.0388°
True anomaly
184.60348°
Mean anomaly
184.6269°
Eccentric anomaly
184.61518°
Mean motion
0.25069 °/min
Orbital period
1,436.05 mins
BSTAR
0
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Other satellites on launch #23 in the year 1976 (1976-03-15 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.LES 9 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. |
|---|---|---|---|---|---|---|---|
| 1440 mins | 2025-11-01 15:42:52.111Z | 175.661° S | 2025-11-02 12:55:52.111Z | 181.075° SSW | 43.017° | 2025-11-02 15:42:52.111Z | 175.634° S |
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8747 neighbors
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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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