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EXPLORER 38 (RAE-A), 3307

Orbit data source: Space-Track

EXPLORER 38 (RAE-A), 3307 is a payload satellite owned by GSFC (US) that was launched on Thu, 04 Jul 1968 UTC via a THOR DELTA J 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/3307?theme=dark&initialShowStats=false

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Identifier

3307, 1968-055A

Orbit

Active

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

GSFC/FAIRH

Mission

Spacecraft

Bus & Motor

RAE, Unknown motor

Mass

189 kg wet, 189 kg dry

Launch date (UTC)

1968-07-04 (58 years ago)

Launch vehicle

THOR DELTA J

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

CYL + 4 ANT, 1.1 m

Radar Cross Section

Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 9 hours ago

TLE from 9 hours ago

0 EXPLORER 38 (RAE-A)
1  3307U 68055A   26305.76487997 -.00000010  00000-0  00000+0 0  9991
2  3307 120.8402 235.3444 0010588 298.5480  61.4056  6.42615146368278

Epoch: 2026-11-01T18:21Z

TLE epoch observation values (Epoch: 2026-11-01T18:21:25.629Z)

Latitude

-0.00005°

Longitude

-81.06392°

Altitude

5,837.38 km

Speed

5.714 km/s

True Right ascension

15h 41m 22s

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

23:13:48

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

5,855.272 km

Perigee altitude

5,829.394 km

Semi-major axis

12,220.47 km

Eccentricity

0.00106

Inclination

120.8402°

RAAN

235.3444°

Arg. of periapsis

298.548°

True anomaly

61.5122°

Mean anomaly

61.4056°

Eccentric anomaly

61.45889°

Mean motion

1.60661 °/min

Orbital period

224.07 mins

BSTAR

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Other satellites on launch #55 in the year 1968 (1968-07-04 UTC)

DELTA 1 DEB, 27480

DELTA 1 DEB, 27481

DELTA 1 DEB, 26673 (Decayed)

EXPLORER 38 DEB, 3848

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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 38 (RAE-A) 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.
49 mins	2026-11-02 06:42:34.768Z	48.631° ENE	2026-11-02 07:07:34.768Z	114.034° SE	37.537°	2026-11-02 07:31:34.768Z	178.112° S
54 mins	2026-11-02 10:09:34.768Z	42.255° NE	2026-11-02 10:35:34.768Z	331.695° NNW	78.533°	2026-11-02 11:03:34.768Z	241.399° WSW
49 mins	2026-11-02 13:33:34.768Z	65.74° ENE	2026-11-02 13:57:34.768Z	0.419° NNE	51.95°	2026-11-02 14:22:34.768Z	294.042° NW
54 mins	2026-11-02 16:52:34.768Z	119.319° SE	2026-11-02 17:19:34.768Z	30.643° NE	79.378°	2026-11-02 17:46:34.768Z	317.809° NNW
48 mins	2026-11-02 20:24:34.768Z	183.806° SSW	2026-11-02 20:47:34.768Z	245.367° WSW	36.625°	2026-11-02 21:12:34.768Z	310.893° NW

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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 38 (RAE-A), 3307 on other resources

View EXPLORER 38 (RAE-A), 3307 on NASA - NSSDCA Website

View EXPLORER 38 (RAE-A), 3307 on Heavens-Above

View EXPLORER 38 (RAE-A), 3307 on Keep Track

View EXPLORER 38 (RAE-A), 3307 on Celestrak

View EXPLORER 38 (RAE-A), 3307 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 38 (RAE-A), 3307

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 9 hours ago

TLE from 9 hours ago

TLE epoch observation values (Epoch: 2026-11-01T18:21:25.629Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #55 in the year 1968 (1968-07-04 UTC)

EXPLORER 38 (RAE-A) Visibility forecast

Co-orbital & Co-planar RSOs

Check out EXPLORER 38 (RAE-A), 3307 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 9 hours ago