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 (62 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)

Expand to show TLE details & history
Last TLE update: 20 hours ago

TLE from 20 hours ago

0 SCOUT X-4 R/B
1 00871U 64051B   26126.39342317  .00000179  00000-0  11244-3 0  9993
2 00871  79.8912 113.9994 0084910 257.1889 101.9775 14.00674313139015

Epoch: 2026-05-06T09:26Z

TLE epoch observation values (Epoch: 2026-05-06T09:26:31.761Z)

Latitude

0.00001°

Longitude

108.11251°

Altitude

907.614 km

Speed

7.391 km/s

True Right ascension

07h 35m 59s

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

13:15:46

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

950.42 km

Perigee altitude

827.014 km

Semi-major axis

7,266.854 km

Eccentricity

0.00849

Inclination

79.8912°

RAAN

113.9994°

Arg. of periapsis

257.1889°

True anomaly

102.92718°

Mean anomaly

101.9775°

Eccentric anomaly

102.45255°

Mean motion

3.50367 °/min

Orbital period

102.75 mins

BSTAR

0.00011244

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

EXPLORER 20, 870

SCOUT X-4 DEB, 873 (Decayed)

SCOUT X-4 DEB, 874 (Decayed)

SCOUT X-4 DEB, 875 (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.
10 mins	2026-05-07 10:00:58.022Z	7.082° NNE	2026-05-07 10:05:58.022Z	66.405° ENE	29.889°	2026-05-07 10:10:58.022Z	133.434° SE
9 mins	2026-05-07 11:45:58.022Z	322.673° NNW	2026-05-07 11:49:58.022Z	270.331° WNW	27.701°	2026-05-07 11:54:58.022Z	209.354° SW
9 mins	2026-05-07 23:16:58.022Z	155.002° SSE	2026-05-07 23:20:58.022Z	93.03° ESE	34.188°	2026-05-07 23:25:58.022Z	27.363° NE
8 mins	2026-05-08 01:01:58.022Z	248.737° W	2026-05-08 01:04:58.022Z	289.738° WNW	24.943°	2026-05-08 01:09:58.022Z	347.402° N

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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: 20 hours ago

TLE from 20 hours ago

TLE epoch observation values (Epoch: 2026-05-06T09:26:31.761Z)

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: 20 hours ago