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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, 0.3 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 15 hours ago

TLE from 15 hours ago

0 EXPLORER 25 (INJUN-4)
1 00932U 64076B   26208.40086378  .00001172  00000-0  40969-3 0  9993
2 00932  81.3424 347.5194 1118560 177.0964 183.7423 12.67261556824224

Epoch: 2026-07-27T09:37Z

TLE epoch observation values (Epoch: 2026-07-27T09:37:14.630Z)

Latitude

-0.00002°

Longitude

-101.87654°

Altitude

2,263.78 km

Speed

6.402 km/s

True Right ascension

23h 10m 04s

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

14:23:53

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

2,259.39 km

Perigee altitude

521.469 km

Semi-major axis

7,768.566 km

Eccentricity

0.11186

Inclination

81.3424°

RAAN

347.5194°

Arg. of periapsis

177.0964°

True anomaly

183.00855°

Mean anomaly

183.7423°

Eccentric anomaly

183.36601°

Mean motion

3.1698 °/min

Orbital period

113.57 mins

BSTAR

0.00040969

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

SCOUT X-4 DEB, 1411 (Decayed)

SCOUT X-4 DEB, 936 (Decayed)

SCOUT X-4 DEB, 941 (Decayed)

SCOUT X-4 DEB, 934 (Decayed)

SCOUT X-4 DEB, 940 (Decayed)

SCOUT X-4 DEB, 935 (Decayed)

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

SCOUT X-4 DEB, 4079 (Decayed)

SCOUT X-4 DEB, 960 (Decayed)

SCOUT X-4 DEB, 939 (Decayed)

SCOUT X-4 R/B, 933

SCOUT X-4 DEB, 937 (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.
17 mins	2026-07-28 08:27:29.257Z	137.325° SSE	2026-07-28 08:36:29.257Z	87.298° E	26.847°	2026-07-28 08:44:29.257Z	32.436° NE
21 mins	2026-07-28 10:19:29.257Z	194.845° SSW	2026-07-28 10:30:29.257Z	259.928° W	43.902°	2026-07-28 10:40:29.257Z	5.519° NNE
12 mins	2026-07-28 12:20:29.257Z	260.338° W	2026-07-28 12:26:29.257Z	293.774° NW	17.911°	2026-07-28 12:32:29.257Z	333.349° NNW
7 mins	2026-07-28 20:25:29.257Z	13.357° NNE	2026-07-28 20:28:29.257Z	57.579° ENE	27.561°	2026-07-28 20:32:29.257Z	134.774° SE

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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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Click to sort rows by RSO header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Type header in ascending order	Click to sort rows by Inclination Δ header in ascending order	Click to sort rows by RAAN Δ header in ascending order	Click to sort rows by Coplanar Angle header in ascending order	Click to sort rows by SMA Δ header in ascending order	Click to sort rows by Orbital period header in ascending order	Click to sort rows by <5km Md TCA header in descending order

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: 15 hours ago

TLE from 15 hours ago

TLE epoch observation values (Epoch: 2026-07-27T09:37:14.630Z)

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: 15 hours ago