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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 (62 years ago)

Launch vehicle

SCOUT X-4

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

POLY, 1.1 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

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Last TLE update: 14 hours ago

TLE from 14 hours ago

0 EXPLORER 25 (INJUN-4)
1 00932U 64076B   26308.18677861  .00000552  00000-0  19585-3 0  9993
2 00932  81.3382 270.7108 1117206 310.8195  40.1069 12.67365378836860

Epoch: 2026-11-04T04:28Z

TLE epoch observation values (Epoch: 2026-11-04T04:28:57.671Z)

Latitude

-0.00007°

Longitude

160.03179°

Altitude

777.243 km

Speed

7.756 km/s

True Right ascension

18h 02m 50s

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

14:31:39

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

2,257.867 km

Perigee altitude

522.144 km

Semi-major axis

7,768.142 km

Eccentricity

0.11172

Inclination

81.3382°

RAAN

270.7108°

Arg. of periapsis

310.8195°

True anomaly

49.29514°

Mean anomaly

40.1069°

Eccentric anomaly

44.60159°

Mean motion

3.17006 °/min

Orbital period

113.56 mins

BSTAR

0.00019585

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

SCOUT X-4 R/B, 933

SCOUT X-4 DEB, 936 (Decayed)

SCOUT X-4 DEB, 935 (Decayed)

SCOUT X-4 DEB, 939 (Decayed)

SCOUT X-4 DEB, 937 (Decayed)

SCOUT X-4 DEB, 960 (Decayed)

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

SCOUT X-4 DEB, 934 (Decayed)

SCOUT X-4 DEB, 1411 (Decayed)

SCOUT X-4 DEB, 4079 (Decayed)

SCOUT X-4 DEB, 941 (Decayed)

SCOUT X-4 DEB, 940 (Decayed)

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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.

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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.
14 mins	2026-11-04 21:38:03.532Z	151.937° SSE	2026-11-04 21:44:03.532Z	78.2° E	43.146°	2026-11-04 21:52:03.532Z	19.913° NNE
13 mins	2026-11-04 23:34:03.532Z	239.416° WSW	2026-11-04 23:39:03.532Z	301.07° NW	36.677°	2026-11-04 23:47:03.532Z	357.306° N
20 mins	2026-11-05 07:36:03.532Z	8.185° NNE	2026-11-05 07:46:03.532Z	65.021° ENE	32.226°	2026-11-05 07:56:03.532Z	121.157° SE
23 mins	2026-11-05 09:30:03.532Z	348.999° N	2026-11-05 09:42:03.532Z	263.173° W	82.616°	2026-11-05 09:53:03.532Z	179.469° S
16 mins	2026-11-05 11:27:03.532Z	325.337° NNW	2026-11-05 11:35:03.532Z	283.82° WNW	23.686°	2026-11-05 11:43:03.532Z	241.18° WSW

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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: 14 hours ago

TLE from 14 hours ago

TLE epoch observation values (Epoch: 2026-11-04T04:28:57.671Z)

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: 14 hours ago