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.
Focus sentinelFocus sentinel
Request partner network tasking
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
3307 intel report (Beta)
Focus sentinelFocus sentinel
Edit Public Description
Focus sentinelFocus sentinel
Edit Sat Name
Focus sentinelFocus sentinel
Create New Watchlist
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: 1 day ago
TLE from 1 day ago
0 EXPLORER 38 (RAE-A)
1 3307U 68055A 26197.30459653 -.00000010 00000-0 00000+0 0 9998
2 3307 120.8061 178.4329 0017297 284.0069 75.8611 6.42555080361308Epoch: 2026-07-16T07:18Z
TLE epoch observation values (Epoch: 2026-07-16T07:18:37.140Z)
Latitude
0.00004°
Longitude
134.63016°
Altitude
5,839.196 km
Speed
5.714 km/s
True Right ascension
11h 53m 43s
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
20:36:16
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
5,864.231 km
Perigee altitude
5,821.953 km
Semi-major axis
12,221.229 km
Eccentricity
0.00173
Inclination
120.8061°
RAAN
178.4329°
Arg. of periapsis
284.0069°
True anomaly
76.05341°
Mean anomaly
75.8611°
Eccentric anomaly
75.95724°
Mean motion
1.60646 °/min
Orbital period
224.09 mins
BSTAR
0
Loading maneuver chart data...
Computing Atmospheric mass density...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Other satellites on launch #55 in the year 1968 (1968-07-04 UTC)
Did you know?
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
Loading observer location...
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. |
|---|---|---|---|---|---|---|---|
| 52 mins | 2026-07-17 10:33:06.271Z | 45.627° ENE | 2026-07-17 10:59:06.271Z | 116.847° SE | 36.236° | 2026-07-17 11:25:06.271Z | 189.457° SSW |
| 52 mins | 2026-07-17 14:01:06.271Z | 43.565° NE | 2026-07-17 14:27:06.271Z | 323.254° NNW | 43.379° | 2026-07-17 14:53:06.271Z | 250.669° W |
| 50 mins | 2026-07-17 17:23:06.271Z | 72.867° E | 2026-07-17 17:47:06.271Z | 8.941° NNE | 38.481° | 2026-07-17 18:13:06.271Z | 299.611° NW |
| 55 mins | 2026-07-17 20:43:06.271Z | 128.686° SE | 2026-07-17 21:10:06.271Z | 32.153° NE | 44.989° | 2026-07-17 21:38:06.271Z | 318.779° NNW |
| 42 mins | 2026-07-18 00:19:06.271Z | 196.891° SSW | 2026-07-18 00:39:06.271Z | 247.917° W | 24.936° | 2026-07-18 01:01:06.271Z | 303.839° NW |
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 |
|---|
CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
Authenticating...
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 |
|---|