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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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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: 13 hours ago

TLE from 13 hours ago

0 EXPLORER 40 (INJUN-5)
1  3338U 68066B   26045.87037660  .00000276  00000-0  28352-3 0  9995
2  3338  80.6625 180.4357 1130597 190.9553 166.4881 12.23545414563359

Epoch: 2026-02-14T20:53Z

TLE epoch observation values (Epoch: 2026-02-14T20:53:20.538Z)

Latitude

-0.00008°

Longitude

82.21288°

Altitude

2,459.201 km

Speed

6.335 km/s

True Right ascension

12h 01m 44s

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

12:08:20

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

2,473.67 km

Perigee altitude

675.415 km

Semi-major axis

7,952.68 km

Eccentricity

0.11306

Inclination

80.6625°

RAAN

180.4357°

Arg. of periapsis

190.9553°

True anomaly

169.1471°

Mean anomaly

166.4881°

Eccentric anomaly

167.85135°

Mean motion

3.06036 °/min

Orbital period

117.63 mins

BSTAR

0.00028352

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

SCOUT B DEB, 29279

SCOUT B DEB, 3343 (Decayed)

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

SCOUT B DEB, 3392

SCOUT B R/B, 3341

SCOUT B DEB, 3390 (Decayed)

SCOUT B DEB, 23307 (Decayed)

SCOUT B DEB, 29277 (Decayed)

SCOUT B DEB, 3342 (Decayed)

SCOUT B DEB, 29278

SCOUT B DEB, 3393 (Decayed)

SCOUT B DEB, 3391 (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.
23 mins	2026-02-15 10:42:12.345Z	215.611° SW	2026-02-15 10:55:12.345Z	289.575° WNW	37.306°	2026-02-15 11:05:12.345Z	358.114° N
6 mins	2026-02-15 12:54:12.345Z	295.666° NW	2026-02-15 12:57:12.345Z	310.111° NW	11.5°	2026-02-15 13:00:12.345Z	325.326° NNW
7 mins	2026-02-15 19:12:12.345Z	20.479° NNE	2026-02-15 19:16:12.345Z	59.877° ENE	18.624°	2026-02-15 19:19:12.345Z	95.98° ESE
9 mins	2026-02-15 21:11:12.345Z	335.756° NNW	2026-02-15 21:16:12.345Z	258.153° W	36.875°	2026-02-15 21:20:12.345Z	197.375° SSW
21 mins	2026-02-16 08:18:12.345Z	148.802° SSE	2026-02-16 08:29:12.345Z	85.199° E	34.596°	2026-02-16 08:39:12.345Z	24.015° NE

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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: 13 hours ago

TLE from 13 hours ago

TLE epoch observation values (Epoch: 2026-02-14T20:53:20.538Z)

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: 13 hours ago