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, 0.8 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 21 hours ago

TLE from 21 hours ago

0 SCOUT X-4 R/B
1 00871U 64051B   26207.61094738  .00000248  00000-0  15596-3 0  9990
2 00871  79.8930  24.2494 0086266  40.9230 319.8363 14.00706091150383

Epoch: 2026-07-26T14:39Z

TLE epoch observation values (Epoch: 2026-07-26T14:39:45.853Z)

Latitude

-0.00003°

Longitude

-139.99806°

Altitude

846.486 km

Speed

7.454 km/s

True Right ascension

01h 36m 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

01:16:26

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

951.294 km

Perigee altitude

825.919 km

Semi-major axis

7,266.744 km

Eccentricity

0.00863

Inclination

79.893°

RAAN

24.2494°

Arg. of periapsis

40.923°

True anomaly

319.19344°

Mean anomaly

319.8363°

Eccentric anomaly

319.5154°

Mean motion

3.50375 °/min

Orbital period

102.75 mins

BSTAR

0.00015596

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

SCOUT X-4 DEB, 873 (Decayed)

SCOUT X-4 DEB, 875 (Decayed)

EXPLORER 20, 870

SCOUT X-4 DEB, 40592 (Decayed)

SCOUT X-4 DEB, 874 (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.
9 mins	2026-07-27 13:04:11.857Z	207.563° SW	2026-07-27 13:08:11.857Z	265.464° W	39.78°	2026-07-27 13:13:11.857Z	0.87° NNE
5 mins	2026-07-27 22:07:11.857Z	41.419° NE	2026-07-27 22:09:11.857Z	66.143° ENE	17.362°	2026-07-27 22:12:11.857Z	100.459° ESE
10 mins	2026-07-27 23:49:11.857Z	339.159° N	2026-07-27 23:53:11.857Z	282.608° WNW	41.268°	2026-07-27 23:59:11.857Z	183.859° SSW
5 mins	2026-07-28 11:23:11.857Z	115.408° SE	2026-07-28 11:25:11.857Z	88.428° E	18.393°	2026-07-28 11:28:11.857Z	50.979° ENE

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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: 21 hours ago

TLE from 21 hours ago

TLE epoch observation values (Epoch: 2026-07-26T14:39:45.853Z)

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: 21 hours ago