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)

Expand to show TLE details & history
Last TLE update: 11 hours ago

TLE from 11 hours ago

0 SCOUT X-4 R/B
1 00871U 64051B   25292.23346090  .00000439  00000-0  28056-3 0  9999
2 00871  79.8946 334.0400 0087129  68.9461 292.0990 14.00545331111130

Epoch: 2025-10-19T05:36Z

TLE epoch observation values (Epoch: 2025-10-19T05:36:11.021Z)

Latitude

-0.00005°

Longitude

-137.95899°

Altitude

871.389 km

Speed

7.429 km/s

True Right ascension

22h 16m 09s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow 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

11:09:05

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

952.482 km

Perigee altitude

825.844 km

Semi-major axis

7,267.3 km

Eccentricity

0.00871

Inclination

79.8946°

RAAN

334.04°

Arg. of periapsis

68.9461°

True anomaly

291.17016°

Mean anomaly

292.099°

Eccentric anomaly

291.63496°

Mean motion

3.50335 °/min

Orbital period

102.76 mins

BSTAR

0.00028056

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

SCOUT X-4 DEB, 875 (Decayed)

EXPLORER 20, 870

SCOUT X-4 DEB, 40592 (Decayed)

SCOUT X-4 DEB, 874 (Decayed)

SCOUT X-4 DEB, 873 (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.
4 mins	2025-10-20 02:20:00.182Z	106.7° ESE	2025-10-20 02:22:00.182Z	83.779° E	13.246°	2025-10-20 02:24:00.182Z	61.394° ENE
9 mins	2025-10-20 04:01:00.182Z	201.782° SSW	2025-10-20 04:05:00.182Z	274.363° WNW	42.906°	2025-10-20 04:10:00.182Z	5.019° NNE
4 mins	2025-10-20 13:04:00.182Z	46.198° ENE	2025-10-20 13:06:00.182Z	69.801° E	14.342°	2025-10-20 13:08:00.182Z	91.718° ESE
9 mins	2025-10-20 14:46:00.182Z	342.813° N	2025-10-20 14:50:00.182Z	268.88° W	43.734°	2025-10-20 14:55:00.182Z	179.067° S

Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

Please sign-in to view Co-orbital & Co-planar RSOs.

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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: 11 hours ago

TLE from 11 hours ago

TLE epoch observation values (Epoch: 2025-10-19T05:36:11.021Z)

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: 11 hours ago