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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

Unknown

Radar Cross Section

Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 1 day ago

TLE from 1 day ago

0 EXPLORER 40 (INJUN-5)
1 03338U 68066B   26135.07890837  .00000103  00000-0  10197-3 0  9997
2 03338  80.6577 112.2353 1129920   8.3391 353.4813 12.23570395574265

Epoch: 2026-05-15T01:53Z

TLE epoch observation values (Epoch: 2026-05-15T01:53:37.683Z)

Latitude

-0.00003°

Longitude

-148.9871°

Altitude

688.037 km

Speed

7.922 km/s

True Right ascension

07h 28m 56s

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

17:55:55

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

2,473.012 km

Perigee altitude

675.858 km

Semi-major axis

7,952.572 km

Eccentricity

0.11299

Inclination

80.6577°

RAAN

112.2353°

Arg. of periapsis

8.3391°

True anomaly

351.77354°

Mean anomaly

353.4813°

Eccentric anomaly

352.65347°

Mean motion

3.06043 °/min

Orbital period

117.63 mins

BSTAR

0.00010197

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

SCOUT B DEB, 3343 (Decayed)

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

SCOUT B DEB, 23307 (Decayed)

SCOUT B DEB, 3390 (Decayed)

SCOUT B DEB, 3342 (Decayed)

SCOUT B DEB, 3393 (Decayed)

SCOUT B DEB, 29277 (Decayed)

SCOUT B DEB, 3391 (Decayed)

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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.
23 mins	2026-05-16 09:48:58.260Z	353.228° N	2026-05-16 09:58:58.260Z	74.732° E	44.209°	2026-05-16 10:11:58.260Z	165.432° S
18 mins	2026-05-16 11:49:58.260Z	323.876° NNW	2026-05-16 11:57:58.260Z	270.77° WNW	27.153°	2026-05-16 12:07:58.260Z	221.41° SW
9 mins	2026-05-16 23:08:58.260Z	183.95° SSW	2026-05-16 23:11:58.260Z	111.032° ESE	44.75°	2026-05-16 23:17:58.260Z	11.729° NNE
10 mins	2026-05-17 07:26:58.260Z	34.521° NE	2026-05-17 07:30:58.260Z	57.891° ENE	14.971°	2026-05-17 07:36:58.260Z	88.102° E

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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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Click to sort rows by Secondary header in ascending order	Click to sort rows by Secondary name header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Owner header in ascending order	Click to sort rows by Obj. Type header in ascending order	Click to sort rows by Miss dist. header in ascending order	Click to sort rows by Rel. speed header in ascending order	Click to sort rows by Apr. angle header in ascending order	Click to sort rows by TCA header in descending order

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: 1 day ago

TLE from 1 day ago

TLE epoch observation values (Epoch: 2026-05-15T01:53:37.683Z)

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: 1 day ago