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.
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22 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
ABMA
Mission
Civil Science
Bus & Motor
S-1, Unknown motor
Mass
41 kg wet, 41 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Cone + Cone, 0.4 m
Radar Cross Section
0.454 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 12 hours ago
TLE from 12 hours ago
0 EXPLORER 7
1 00022U 59009A 25258.56687457 .00012820 00000-0 52537-3 0 9995
2 00022 50.2712 10.4563 0087472 102.4476 258.6287 15.21122699758437Epoch: 2025-09-15T13:36Z
TLE epoch observation values (Epoch: 2025-09-15T13:36:17.962Z)
Latitude
-0.00001°
Longitude
171.61177°
Altitude
515.407 km
Speed
7.6 km/s
True Right ascension
00h 41m 49s
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
18:17:09
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
563.371 km
Perigee altitude
442.987 km
Semi-major axis
6,881.316 km
Eccentricity
0.00875
Inclination
50.2712°
RAAN
10.4563°
Arg. of periapsis
102.4476°
True anomaly
257.64818°
Mean anomaly
258.6287°
Eccentric anomaly
258.13822°
Mean motion
3.80221 °/min
Orbital period
94.68 mins
BSTAR
0.00052537
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Other satellites on launch #9 in the year 1959 (1959-10-13 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 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 | 2025-09-16 10:16:34.513Z | 222.302° SW | 2025-09-16 10:20:34.513Z | 99.939° ESE | 39.077° | 2025-09-16 10:22:34.513Z | 64.443° ENE |
| 4 mins | 2025-09-16 11:57:34.513Z | 301.896° NW | 2025-09-16 11:58:34.513Z | 325.997° NNW | 22.746° | 2025-09-16 12:01:34.513Z | 33.212° NE |
| 4 mins | 2025-09-16 15:16:34.513Z | 338.766° N | 2025-09-16 15:18:34.513Z | 29.294° NE | 22.177° | 2025-09-16 15:20:34.513Z | 70.693° E |
| 5 mins | 2025-09-16 16:55:34.513Z | 291.263° WNW | 2025-09-16 16:57:34.513Z | 181.13° SSW | 40.471° | 2025-09-16 17:00:34.513Z | 136.593° 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 ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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