SCOUT X-4 R/B, 721

Orbit data source: Space-Track

SCOUT X-4 R/B, 721 is space debris in LEO originally from a launch on Thu, 19 Dec 1963 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/721?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

721, 1963-053B

Orbit

LEO

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

ABL

Mission

Spacecraft

Bus & Motor

ALTAIR, Unknown motor

Mass

68 kg wet, 33 kg dry

Launch date (UTC)

1963-12-19 (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

0.687 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history
Last TLE update: 10 hours ago

TLE from 10 hours ago

0 SCOUT X-4 R/B
1 00721U 63053B   25242.84422232  .00000301  00000-0  18193-3 0  9998
2 00721  78.6037  37.2752 1087690 270.1483  77.5230 12.54902867813634

Epoch: 2025-08-30T20:15Z

TLE epoch observation values (Epoch: 2025-08-30T20:15:40.808Z)

Latitude

-0.00003°

Longitude

114.08247°

Altitude

1,353.565 km

Speed

7.224 km/s

True Right ascension

02h 29m 06s

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

21:35:14

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

2,292.067 km

Perigee altitude

590.992 km

Semi-major axis

7,819.667 km

Eccentricity

0.10877

Inclination

78.6037°

RAAN

37.2752°

Arg. of periapsis

270.1483°

True anomaly

89.96171°

Mean anomaly

77.523°

Eccentric anomaly

83.71758°

Mean motion

3.13878 °/min

Orbital period

114.69 mins

BSTAR

0.00018193

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Other satellites on launch #53 in the year 1963 (1963-12-19 UTC)

EXPLORER 19 (ADI-1), 714 (Decayed)

SCOUT X-4 DEB, 722 (Decayed)

SCOUT X-4 DEB, 723 (Decayed)

SCOUT X-4 DEB, 724 (Decayed)

SCOUT X-4 DEB, 725 (Decayed)

SCOUT X-4 DEB, 726 (Decayed)

SCOUT X-4 DEB, 732

SCOUT X-4 DEB, 3750

SCOUT X-4 DEB, 17665 (Decayed)

SCOUT X-4 R/B Visibility forecast

Observer location: undefined°, undefined°
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.
18 mins	2025-08-31 09:45:02.293Z	137.708° SSE	2025-08-31 09:53:02.293Z	83.255° E	27.393°	2025-08-31 10:03:02.293Z	28.317° NE
21 mins	2025-08-31 11:40:02.293Z	203.092° SW	2025-08-31 11:48:02.293Z	275.325° WNW	43.689°	2025-08-31 12:01:02.293Z	10.711° NNE
15 mins	2025-08-31 13:41:02.293Z	272.04° WNW	2025-08-31 13:48:02.293Z	314.179° NW	20.262°	2025-08-31 13:56:02.293Z	354.576° N
17 mins	2025-08-31 19:52:02.293Z	4.481° NNE	2025-08-31 20:01:02.293Z	53.421° ENE	23.213°	2025-08-31 20:09:02.293Z	103.112° ESE
21 mins	2025-08-31 21:48:02.293Z	347.793° N	2025-08-31 22:00:02.293Z	128.923° SE	44.77°	2025-08-31 22:09:02.293Z	167.066° S
14 mins	2025-08-31 23:47:02.293Z	322.245° NNW	2025-08-31 23:54:02.293Z	282.028° WNW	22.733°	2025-09-01 00:01:02.293Z	235.128° WSW

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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Check out SCOUT X-4 R/B, 721 on other resources

View SCOUT X-4 R/B, 721 on Heavens-Above

View SCOUT X-4 R/B, 721 on Keep Track

View SCOUT X-4 R/B, 721 on Celestrak

View SCOUT X-4 R/B, 721 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, 721

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 10 hours ago

TLE from 10 hours ago

TLE epoch observation values (Epoch: 2025-08-30T20:15:40.808Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #53 in the year 1963 (1963-12-19 UTC)

SCOUT X-4 R/B Visibility forecast

Co-orbital & Co-planar RSOs

Check out SCOUT X-4 R/B, 721 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 10 hours ago