EXPLORER 7, 22
Orbit data source: Space-Track
EXPLORER 7, 22 is a payload satellite owned by GSFC (US) in LEO that was launched on Tue, 13 Oct 1959 UTC via a JUNO II launch vehicle from the Air Force Eastern Test Range (AFETR). 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
22 intel report (Beta)
Focus sentinelFocus sentinel
Edit Public Description
Focus sentinelFocus sentinel
Create New Watchlist
Identifier
Orbit
Country
USRelated business
Manufacturer
ABMA
Mission
Spacecraft
Bus & Motor
S-1, Unknown motor
Mass
41 kg wet, 41 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Unknown
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 6 hours ago
TLE from 6 hours ago
0 EXPLORER 7
1 00022U 59009A 26080.57336287 .00018477 00000-0 63597-3 0 9994
2 00022 50.2447 172.7966 0080118 131.5941 229.1921 15.27014948786950Epoch: 2026-03-21T13:45Z
TLE epoch observation values (Epoch: 2026-03-21T13:45:38.551Z)
Latitude
-0.00005°
Longitude
147.29379°
Altitude
521.505 km
Speed
7.584 km/s
True Right ascension
11h 31m 11s
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
00:30:17
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
540.464 km
Perigee altitude
430.484 km
Semi-major axis
6,863.611 km
Eccentricity
0.00801
Inclination
50.2447°
RAAN
172.7966°
Arg. of periapsis
131.5941°
True anomaly
228.50173°
Mean anomaly
229.1921°
Eccentric anomaly
228.84646°
Mean motion
3.81693 °/min
Orbital period
94.32 mins
BSTAR
0.00063597
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 #9 in the year 1959 (1959-10-13 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 7 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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-03-22 08:47:26.384Z | 218.049° SW | 2026-03-22 08:50:26.384Z | 134.571° SE | 40.28° | 2026-03-22 08:53:26.384Z | 63.63° ENE |
| 4 mins | 2026-03-22 10:27:26.384Z | 299.81° NW | 2026-03-22 10:28:26.384Z | 324.169° NNW | 23.779° | 2026-03-22 10:31:26.384Z | 33.199° NE |
| 4 mins | 2026-03-22 15:24:26.384Z | 294.394° NW | 2026-03-22 15:26:26.384Z | 165.142° S | 40.739° | 2026-03-22 15:28:26.384Z | 135.595° SSE |
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 |
|---|