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

CYL, 1.1 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 16 hours ago

TLE from 16 hours ago

0 SCOUT X-4 R/B
1   871U 64051B   26306.61240675  .00000174  00000-0  10736-3 0  9992
2   871  79.8915 274.8431 0086432 135.9857 224.8230 14.00736200164248

Epoch: 2026-11-02T14:41Z

TLE epoch observation values (Epoch: 2026-11-02T14:41:51.943Z)

Latitude

0.00003°

Longitude

12.48975°

Altitude

938.929 km

Speed

7.36 km/s

True Right ascension

18h 19m 22s

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

02:30:28

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

951.31 km

Perigee altitude

825.696 km

Semi-major axis

7,266.64 km

Eccentricity

0.00864

Inclination

79.8915°

RAAN

274.8431°

Arg. of periapsis

135.9857°

True anomaly

224.13015°

Mean anomaly

224.823°

Eccentric anomaly

224.47604°

Mean motion

3.50383 °/min

Orbital period

102.74 mins

BSTAR

0.00010736

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

SCOUT X-4 DEB, 40592 (Decayed)

SCOUT X-4 DEB, 875 (Decayed)

SCOUT X-4 DEB, 873 (Decayed)

SCOUT X-4 DEB, 874 (Decayed)

EXPLORER 20, 870

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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.
6 mins	2026-11-03 08:25:46.376Z	30.624° NE	2026-11-03 08:28:46.376Z	67.016° ENE	17.517°	2026-11-03 08:31:46.376Z	102.499° ESE
9 mins	2026-11-03 10:08:46.376Z	337.789° N	2026-11-03 10:12:46.376Z	276.43° WNW	57.1°	2026-11-03 10:17:46.376Z	187.347° SSW
7 mins	2026-11-03 21:41:46.376Z	125.466° SE	2026-11-03 21:44:46.376Z	86.905° E	22.318°	2026-11-03 21:48:46.376Z	41.632° NE
9 mins	2026-11-03 23:23:46.376Z	216.283° SW	2026-11-03 23:27:46.376Z	271.61° WNW	46.837°	2026-11-03 23:32:46.376Z	355.616° 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: 16 hours ago

TLE from 16 hours ago

TLE epoch observation values (Epoch: 2026-11-02T14:41:51.943Z)

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: 16 hours ago