SCOUT X-4 R/B, 871

Orbit data source: Space-Track

SCOUT X-4 R/B, 871 is space debris in LEO originally from a launch on Tue, 25 Aug 1964 UTC launched from the Air Force Western Test Range (AFWTR). Debris objects in space refer to the collection of defunct objects orbiting the Earth. Examples of debris include non-operational satellites, rocket bodies, and fragments generated from explosions, collisions, or faulty payload assembly.

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Iframe URL

https://www.satcat.com/sats-embedded/871?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

871, 1964-051B

Orbit

LEO

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

ABL

Mission

Spacecraft

Bus & Motor

ALTAIR, Unknown motor

Mass

33 kg wet, 33 kg dry

Launch date (UTC)

1964-08-25 (61 years ago)

Launch vehicle

Unknown

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown

Radar Cross Section

Medium (>0.1 m² and <1 m²)

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Last TLE update: 1 day ago

TLE from 1 day ago

0 SCOUT X-4 R/B
1 00871U 64051B   25341.09638310  .00000584  00000-0  37626-3 0  9991
2 00871  79.8936 280.0480 0085831 298.7571  60.4987 14.00587625117973

Epoch: 2025-12-07T02:18Z

TLE epoch observation values (Epoch: 2025-12-07T02:18:47.499Z)

Latitude

-0.00002°

Longitude

169.23541°

Altitude

864.276 km

Speed

7.436 km/s

True Right ascension

18h 40m 11s

True Declination

0° 00' 00"

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

00:27:52

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

951.391 km

Perigee altitude

826.642 km

Semi-major axis

7,267.154 km

Eccentricity

0.00858

Inclination

79.8936°

RAAN

280.048°

Arg. of periapsis

298.7571°

True anomaly

61.35924°

Mean anomaly

60.4987°

Eccentric anomaly

60.92852°

Mean motion

3.50346 °/min

Orbital period

102.76 mins

BSTAR

0.00037626

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Other satellites on launch #51 in the year 1964 (1964-08-25 UTC)

EXPLORER 20, 870

SCOUT X-4 DEB, 875 (Decayed)

SCOUT X-4 DEB, 873 (Decayed)

SCOUT X-4 DEB, 874 (Decayed)

SCOUT X-4 DEB, 40592 (Decayed)

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SCOUT X-4 R/B 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.
7 mins	2025-12-08 06:19:56.919Z	28.09° NE	2025-12-08 06:22:56.919Z	60.269° ENE	17.48°	2025-12-08 06:26:56.919Z	103.609° ESE
10 mins	2025-12-08 08:02:56.919Z	341.6° N	2025-12-08 08:07:56.919Z	254.98° W	42.684°	2025-12-08 08:12:56.919Z	182.844° SSW
7 mins	2025-12-08 19:35:56.919Z	123.018° SE	2025-12-08 19:38:56.919Z	87.166° E	18.868°	2025-12-08 19:42:56.919Z	43.739° NE
10 mins	2025-12-08 21:17:56.919Z	211.557° SW	2025-12-08 21:21:56.919Z	267.824° W	38.635°	2025-12-08 21:27:56.919Z	1.39° NNE

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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 SCOUT X-4 R/B, 871 on other resources

View SCOUT X-4 R/B, 871 on Heavens-Above

View SCOUT X-4 R/B, 871 on Keep Track

View SCOUT X-4 R/B, 871 on Celestrak

View SCOUT X-4 R/B, 871 on Gunter's Space Page

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

SCOUT X-4 R/B, 871

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 1 day ago

TLE from 1 day ago

TLE epoch observation values (Epoch: 2025-12-07T02:18:47.499Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #51 in the year 1964 (1964-08-25 UTC)

SCOUT X-4 R/B Visibility forecast

Co-orbital & Co-planar RSOs

Check out SCOUT X-4 R/B, 871 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 1 day ago