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EXPLORER 40 (INJUN-5), 3338

Orbit data source: Space-Track

EXPLORER 40 (INJUN-5), 3338 is a payload satellite owned by NASA LaRC (US) in LEO that was launched on Thu, 08 Aug 1968 UTC via an SCOUT B 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/3338?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

3338, 1968-066B

Orbit

LEO

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

Iowa

Mission

Spacecraft

Bus & Motor

INJUN E, Unknown motor

Mass

70 kg wet, 70 kg dry

Launch date (UTC)

1968-08-08 (58 years ago)

Launch vehicle

SCOUT B

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

HEX CYL + 5 ANT, 2.5 m

Radar Cross Section

Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 17 hours ago

TLE from 17 hours ago

0 EXPLORER 40 (INJUN-5)
1 03338U 68066B   26208.58389644  .00000114  00000-0  11787-3 0  9991
2 03338  80.6595  56.0009 1129021 217.7003 133.9536 12.23580012583255

Epoch: 2026-07-27T14:00Z

TLE epoch observation values (Epoch: 2026-07-27T14:00:48.652Z)

Latitude

-0.00004°

Longitude

-99.4672°

Altitude

2,249.883 km

Speed

6.505 km/s

True Right ascension

03h 44m 00s

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

20:24:37

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

2,472.25 km

Perigee altitude

676.536 km

Semi-major axis

7,952.53 km

Eccentricity

0.1129

Inclination

80.6595°

RAAN

56.0009°

Arg. of periapsis

217.7003°

True anomaly

142.40365°

Mean anomaly

133.9536°

Eccentric anomaly

138.2602°

Mean motion

3.06045 °/min

Orbital period

117.63 mins

BSTAR

0.00011787

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Other satellites on launch #66 in the year 1968 (1968-08-08 UTC)

SCOUT B DEB, 3392

SCOUT B DEB, 29279

SCOUT B DEB, 3342 (Decayed)

SCOUT B DEB, 3390 (Decayed)

SCOUT B DEB, 29278

SCOUT B R/B, 3341

SCOUT B DEB, 3391 (Decayed)

EXPLORER 39 (ADI-3), 3337 (Decayed)

SCOUT B DEB, 29277 (Decayed)

SCOUT B DEB, 3393 (Decayed)

SCOUT B DEB, 3343 (Decayed)

SCOUT B DEB, 23307 (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 40 (INJUN-5) 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.
7 mins	2026-07-28 11:50:14.884Z	84.417° E	2026-07-28 11:54:14.884Z	67.089° ENE	11.618°	2026-07-28 11:57:14.884Z	53.981° ENE
24 mins	2026-07-28 13:38:14.884Z	157.522° S	2026-07-28 13:50:14.884Z	83.593° E	38.784°	2026-07-28 14:02:14.884Z	18.701° NNE
24 mins	2026-07-28 15:37:14.884Z	216.519° SW	2026-07-28 15:49:14.884Z	291.785° WNW	38.58°	2026-07-28 16:01:14.884Z	1.969° NNE
11 mins	2026-07-28 17:46:14.884Z	287.328° WNW	2026-07-28 17:51:14.884Z	309.871° NW	14.184°	2026-07-28 17:57:14.884Z	338.144° N
12 mins	2026-07-29 00:06:14.884Z	10.023° NNE	2026-07-29 00:12:14.884Z	54.249° ENE	23.742°	2026-07-29 00:18:14.884Z	113.252° SE
13 mins	2026-07-29 02:05:14.884Z	341.446° N	2026-07-29 02:12:14.884Z	280.18° WNW	39.755°	2026-07-29 02:18:14.884Z	193.676° SSW

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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 40 (INJUN-5), 3338 on other resources

View EXPLORER 40 (INJUN-5), 3338 on NASA - NSSDCA Website

View EXPLORER 40 (INJUN-5), 3338 on Heavens-Above

View EXPLORER 40 (INJUN-5), 3338 on Keep Track

View EXPLORER 40 (INJUN-5), 3338 on Celestrak

View EXPLORER 40 (INJUN-5), 3338 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 40 (INJUN-5), 3338

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 17 hours ago

TLE from 17 hours ago

TLE epoch observation values (Epoch: 2026-07-27T14:00:48.652Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #66 in the year 1968 (1968-08-08 UTC)

EXPLORER 40 (INJUN-5) Visibility forecast

Co-orbital & Co-planar RSOs

Check out EXPLORER 40 (INJUN-5), 3338 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 17 hours ago