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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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<iframe src="https://www.satcat.com/sats-embedded/8747?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/8747?theme=dark&initialShowStats=false

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ISO8601 Format

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ISO8601 Format

Identifier

8747, 1976-023B

Orbit

GEO

Country

Related business

USAF Space and Missile Systems Organization (US)

Manufacturer

MIT-LL

Mission

Non-operational Defense Com/Tech

Bus & Motor

LES, Unknown motor

Mass

420 kg wet, 366 kg dry

Launch date (UTC)

1976-03-15 (50 years ago)

Launch vehicle

TITAN IIIC

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box + Cyl + 1 Ant, 2.0 m

Radar Cross Section

4.285 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 2 days ago

TLE from 2 days ago

0 LES 9
1 08747U 76023B   25260.41905042 -.00000113  00000-0  00000-0 0  9990
2 08747  21.8536  40.5215 0025420 172.7848 188.1139  1.00278124126948

Epoch: 2025-09-17T10:03Z

TLE epoch observation values (Epoch: 2025-09-17T10:03:25.956Z)

Latitude

0.31145°

Longitude

-106.15731°

Altitude

35,890.503 km

Speed

3.067 km/s

True Right ascension

02h 45m 11s

True Declination

0° 18' 40"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

15:24:34

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

35,892.852 km

Perigee altitude

35,678.491 km

Semi-major axis

42,163.808 km

Eccentricity

0.00254

Inclination

21.8536°

RAAN

40.5215°

Arg. of periapsis

172.7848°

True anomaly

188.07292°

Mean anomaly

188.1139°

Eccentric anomaly

188.09339°

Mean motion

0.25069 °/min

Orbital period

1,436.05 mins

BSTAR

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Computing Atmospheric mass density...

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Other satellites on launch #23 in the year 1976 (1976-03-15 UTC)

LES 8, 8746

SOLRAD 11A, 8748

SOLRAD 11B, 8749

TITAN 3C R/B(1), 8750 (Decayed)

TITAN 3C TRANSTAGE R/B, 8751

SOLRAD 11A/B PKM, 8752

SOLRAD 11A/B AKM, 8753

TITAN 3C TRANSTAGE DEB, 8832

LES 8 9/SOL 11A B DEB *, 13753

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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	2025-09-18 22:32:40.733Z	182.177° SSW	2025-09-19 15:55:40.733Z	183.308° SSW	42.989°	2025-09-19 22:32:40.733Z	182.229° SSW

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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

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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out LES 9, 8747 on other resources

View LES 9, 8747 on NASA - NSSDCA Website

View LES 9, 8747 on Heavens-Above

View LES 9, 8747 on Keep Track

View LES 9, 8747 on Celestrak

View LES 9, 8747 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

LES 9, 8747

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 2 days ago

TLE from 2 days ago

TLE epoch observation values (Epoch: 2025-09-17T10:03:25.956Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #23 in the year 1976 (1976-03-15 UTC)

LES 9 Visibility forecast

8747 neighbors

Co-orbital & Co-planar RSOs

Check out LES 9, 8747 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 2 days ago