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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

Civil Science

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

Poly, 0.3 m

Radar Cross Section

0.411 m², Medium (>0.1 m² and < 1m²)

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Last TLE update: 21 hours ago

TLE from 21 hours ago

0 EXPLORER 25 (INJUN-4)
1 00932U 64076B   25257.31538443  .00000261  00000-0  86776-4 0  9996
2 00932  81.3375 230.7250 1119929 173.8653 187.7605 12.66808432784190

Epoch: 2025-09-14T07:34Z

TLE epoch observation values (Epoch: 2025-09-14T07:34:09.214Z)

Latitude

-0.00002°

Longitude

123.65045°

Altitude

2,261.955 km

Speed

6.405 km/s

True Right ascension

15h 22m 53s

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

21:08:54

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

2,262.515 km

Perigee altitude

522.051 km

Semi-major axis

7,770.42 km

Eccentricity

0.11199

Inclination

81.3375°

RAAN

230.725°

Arg. of periapsis

173.8653°

True anomaly

186.23966°

Mean anomaly

187.7605°

Eccentric anomaly

186.98065°

Mean motion

3.16867 °/min

Orbital period

113.61 mins

BSTAR

0.000086776

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

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

SCOUT X-4 R/B, 933

SCOUT X-4 DEB, 934 (Decayed)

SCOUT X-4 DEB, 935 (Decayed)

SCOUT X-4 DEB, 936 (Decayed)

SCOUT X-4 DEB, 937 (Decayed)

SCOUT X-4 DEB, 939 (Decayed)

SCOUT X-4 DEB, 941 (Decayed)

SCOUT X-4 DEB, 960 (Decayed)

SCOUT X-4 DEB, 1411 (Decayed)

SCOUT X-4 DEB, 4079 (Decayed)

SCOUT X-4 DEB, 940 (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.
4 mins	2025-09-15 08:54:47.306Z	34.597° NE	2025-09-15 08:56:47.306Z	62.007° ENE	14.877°	2025-09-15 08:58:47.306Z	92.745° ESE
6 mins	2025-09-15 10:48:47.306Z	326.666° NNW	2025-09-15 10:51:47.306Z	276.42° WNW	27.445°	2025-09-15 10:54:47.306Z	213.748° SW
17 mins	2025-09-15 21:34:47.306Z	142.548° SSE	2025-09-15 21:43:47.306Z	88.147° E	29.817°	2025-09-15 21:51:47.306Z	29.597° NE
19 mins	2025-09-15 23:27:47.306Z	201.971° SSW	2025-09-15 23:38:47.306Z	293.221° NW	42.089°	2025-09-15 23:46:47.306Z	1.384° NNE
9 mins	2025-09-16 01:29:47.306Z	271.725° WNW	2025-09-16 01:33:47.306Z	294.048° NW	14.331°	2025-09-16 01:38:47.306Z	326.184° NNW

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: 21 hours ago

TLE from 21 hours ago

TLE epoch observation values (Epoch: 2025-09-14T07:34:09.214Z)

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: 21 hours ago