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: 10 hours ago
TLE from 10 hours ago
0 LES 9
1 8747U 76023B 25319.30967470 -.00000108 00000-0 00000+0 0 9999
2 8747 21.9634 39.7761 0025420 176.4546 204.9148 1.00277933127530Epoch: 2025-11-15T07:25Z
TLE epoch observation values (Epoch: 2025-11-15T07:25:55.894Z)
Latitude
7.8078°
Longitude
-106.53007°
Altitude
35,881.644 km
Speed
3.068 km/s
True Right ascension
03h 58m 22s
True Declination
7° 48' 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
13:52:34
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
35,892.903 km
Perigee altitude
35,678.542 km
Semi-major axis
42,163.86 km
Eccentricity
0.00254
Inclination
21.9634°
RAAN
39.7761°
Arg. of periapsis
176.4546°
True anomaly
204.79244°
Mean anomaly
204.9148°
Eccentric anomaly
204.85358°
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 | 2025-11-15 17:12:52.413Z | 178.417° S | 2025-11-16 11:57:52.413Z | 180.334° SSW | 43.025° | 2025-11-16 17:12:52.413Z | 178.511° 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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