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

Cyl, 0.8 m

Radar Cross Section

0.687 m², Medium (>0.1 m² and < 1m²)

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   25259.29988447  .00000262  00000-0  16523-3 0  9996
2 00871  79.8970  10.4132 0087082 156.1260 204.3978 14.00517974106520

Epoch: 2025-09-16T07:11Z

TLE epoch observation values (Epoch: 2025-09-16T07:11:50.018Z)

Latitude

-0.00007°

Longitude

-93.03739°

Altitude

952.603 km

Speed

7.346 km/s

True Right ascension

00h 41m 39s

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

10:53:25

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

952.544 km

Perigee altitude

825.972 km

Semi-major axis

7,267.395 km

Eccentricity

0.00871

Inclination

79.897°

RAAN

10.4132°

Arg. of periapsis

156.126°

True anomaly

203.98965°

Mean anomaly

204.3978°

Eccentric anomaly

204.19332°

Mean motion

3.50328 °/min

Orbital period

102.76 mins

BSTAR

0.00016523

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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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Set Observer location

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.
8 mins	2025-09-16 19:48:07.335Z	331.295° NNW	2025-09-16 19:52:07.335Z	257.182° W	36.439°	2025-09-16 19:56:07.335Z	195.864° SSW
8 mins	2025-09-17 07:20:07.335Z	134.761° SE	2025-09-17 07:23:07.335Z	96.288° ESE	24.269°	2025-09-17 07:28:07.335Z	36.347° NE
9 mins	2025-09-17 09:03:07.335Z	224.688° SW	2025-09-17 09:07:07.335Z	284.592° WNW	33.245°	2025-09-17 09:12:07.335Z	354.004° N
5 mins	2025-09-17 18:05:07.335Z	27.076° NE	2025-09-17 18:08:07.335Z	69.723° E	22.428°	2025-09-17 18:10:07.335Z	100.407° ESE

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: 2025-09-16T07:11:50.018Z)

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