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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3307 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
GSFC/FAIRH
Mission
Spacecraft
Bus & Motor
RAE, Unknown motor
Mass
189 kg wet, 189 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Unknown
Radar Cross Section
Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 15 hours ago
TLE from 15 hours ago
0 EXPLORER 38 (RAE-A)
1 3307U 68055A 26125.40678781 -.00000010 00000-0 00000+0 0 9995
2 3307 120.8084 140.7181 0019028 285.1616 74.6882 6.42509497356688Epoch: 2026-05-05T09:45Z
TLE epoch observation values (Epoch: 2026-05-05T09:45:46.466Z)
Latitude
-0.00003°
Longitude
130.99243°
Altitude
5,838.803 km
Speed
5.714 km/s
True Right ascension
09h 22m 52s
True Declination
0° 00' 00"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
08:43:51
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
5,866.926 km
Perigee altitude
5,820.415 km
Semi-major axis
12,221.807 km
Eccentricity
0.0019
Inclination
120.8084°
RAAN
140.7181°
Arg. of periapsis
285.1616°
True anomaly
74.89864°
Mean anomaly
74.6882°
Eccentric anomaly
74.79341°
Mean motion
1.60635 °/min
Orbital period
224.11 mins
BSTAR
0
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Other satellites on launch #55 in the year 1968 (1968-07-04 UTC)
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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.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. |
|---|---|---|---|---|---|---|---|
| 44 mins | 2026-05-06 00:48:43.570Z | 171.069° S | 2026-05-06 01:04:43.570Z | 235.938° WSW | 40.796° | 2026-05-06 01:32:43.570Z | 317.637° NNW |
| 52 mins | 2026-05-06 12:59:43.570Z | 45.344° ENE | 2026-05-06 13:25:43.570Z | 119.419° SE | 37.993° | 2026-05-06 13:51:43.570Z | 193.536° SSW |
| 53 mins | 2026-05-06 16:26:43.570Z | 44.559° NE | 2026-05-06 16:52:43.570Z | 329.065° NNW | 42.856° | 2026-05-06 17:19:43.570Z | 254.086° W |
| 50 mins | 2026-05-06 19:48:43.570Z | 75.984° E | 2026-05-06 20:13:43.570Z | 6.749° NNE | 38.737° | 2026-05-06 20:38:43.570Z | 302.036° NW |
| 54 mins | 2026-05-06 23:09:43.570Z | 132.725° SE | 2026-05-06 23:35:43.570Z | 192.355° SSW | 44.961° | 2026-05-07 00:03:43.570Z | 318.803° NNW |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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 |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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