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EXPLORER 25 (INJUN-4), 932

Orbit data source: Space-Track

EXPLORER 25 (INJUN-4), 932 is a payload satellite owned by NASA LaRC (US) in LEO that was launched on Sat, 21 Nov 1964 UTC via an SCOUT X-4 launch vehicle from the Air Force Western Test Range (AFWTR). Payload-class satellites include a variety of spacecraft equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.

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https://www.satcat.com/sats-embedded/932?theme=dark&initialShowStats=false

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Identifier

932, 1964-076B

Orbit

LEO

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

BENDX/UIA

Mission

Spacecraft

Bus & Motor

BENDIX UTILITY, Unknown motor

Mass

41 kg wet, 41 kg dry

Launch date (UTC)

1964-11-21 (61 years ago)

Launch vehicle

SCOUT X-4

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: 13 hours ago

TLE from 13 hours ago

0 EXPLORER 25 (INJUN-4)
1 00932U 64076B   25352.15986218  .00000353  00000-0  12484-3 0  9997
2 00932  81.3390 157.8056 1118784 318.9233  33.2607 12.66962664796204

Epoch: 2025-12-18T03:50Z

TLE epoch observation values (Epoch: 2025-12-18T03:50:12.092Z)

Latitude

-0.00001°

Longitude

13.23585°

Altitude

703.732 km

Speed

7.831 km/s

True Right ascension

10h 31m 13s

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

15:50:44

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

2,260.924 km

Perigee altitude

522.38 km

Semi-major axis

7,769.789 km

Eccentricity

0.11188

Inclination

81.339°

RAAN

157.8056°

Arg. of periapsis

318.9233°

True anomaly

41.19165°

Mean anomaly

33.2607°

Eccentric anomaly

37.13004°

Mean motion

3.16905 °/min

Orbital period

113.6 mins

BSTAR

0.00012484

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Other satellites on launch #76 in the year 1964 (1964-11-21 UTC)

SCOUT X-4 DEB, 934 (Decayed)

SCOUT X-4 DEB, 4079 (Decayed)

SCOUT X-4 DEB, 960 (Decayed)

SCOUT X-4 R/B, 933

SCOUT X-4 DEB, 939 (Decayed)

SCOUT X-4 DEB, 941 (Decayed)

SCOUT X-4 DEB, 936 (Decayed)

SCOUT X-4 DEB, 937 (Decayed)

SCOUT X-4 DEB, 935 (Decayed)

SCOUT X-4 DEB, 1411 (Decayed)

SCOUT X-4 DEB, 940 (Decayed)

EXPLORER 24 (ADI-2), 931 (Decayed)

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EXPLORER 25 (INJUN-4) 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.
21 mins	2025-12-18 21:27:58.646Z	4.899° NNE	2025-12-18 21:38:58.646Z	70.988° E	31.585°	2025-12-18 21:48:58.646Z	128.77° SE
23 mins	2025-12-18 23:22:58.646Z	346.102° N	2025-12-18 23:33:58.646Z	274.866° WNW	43.509°	2025-12-18 23:45:58.646Z	186.842° SSW
13 mins	2025-12-19 01:20:58.646Z	316.92° NNW	2025-12-19 01:26:58.646Z	286.045° WNW	18.297°	2025-12-19 01:33:58.646Z	250.839° W
7 mins	2025-12-19 10:18:58.646Z	99.808° ESE	2025-12-19 10:21:58.646Z	71.289° E	16.457°	2025-12-19 10:25:58.646Z	41.292° NE
13 mins	2025-12-19 12:09:58.646Z	196.703° SSW	2025-12-19 12:14:58.646Z	302.437° NW	44.137°	2025-12-19 12:22:58.646Z	6.797° NNE
6 mins	2025-12-19 14:09:58.646Z	293.455° NW	2025-12-19 14:11:58.646Z	309.745° NW	14.151°	2025-12-19 14:15:58.646Z	337.091° NNW

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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 EXPLORER 25 (INJUN-4), 932 on other resources

View EXPLORER 25 (INJUN-4), 932 on NASA - NSSDCA Website

View EXPLORER 25 (INJUN-4), 932 on Heavens-Above

View EXPLORER 25 (INJUN-4), 932 on Keep Track

View EXPLORER 25 (INJUN-4), 932 on Celestrak

View EXPLORER 25 (INJUN-4), 932 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

EXPLORER 25 (INJUN-4), 932

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 13 hours ago

TLE from 13 hours ago

TLE epoch observation values (Epoch: 2025-12-18T03:50:12.092Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #76 in the year 1964 (1964-11-21 UTC)

EXPLORER 25 (INJUN-4) Visibility forecast

Co-orbital & Co-planar RSOs

Check out EXPLORER 25 (INJUN-4), 932 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 13 hours ago