EXPLORER 22, 899
Orbit data source: Space-Track
EXPLORER 22, 899 is a payload satellite owned by GSFC (US) in LEO that was launched on Sat, 10 Oct 1964 UTC via an SCOUT X-4 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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899 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
APL
Mission
Spacecraft
Bus & Motor
TRANSIT 5, Unknown motor
Mass
52 kg wet, 52 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: 7 hours ago
TLE from 7 hours ago
0 EXPLORER 22
1 00899U 64064A 26102.26754358 .00000106 00000-0 86259-4 0 9998
2 00899 79.6924 199.1355 0119035 16.0831 344.4046 13.83035348 95867Epoch: 2026-04-12T06:25Z
TLE epoch observation values (Epoch: 2026-04-12T06:25:15.765Z)
Latitude
0.00002°
Longitude
-97.65513°
Altitude
871.955 km
Speed
7.459 km/s
True Right ascension
13h 16m 32s
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
19:49:46
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,037.666 km
Perigee altitude
863.194 km
Semi-major axis
7,328.567 km
Eccentricity
0.0119
Inclination
79.6924°
RAAN
199.1355°
Arg. of periapsis
16.0831°
True anomaly
344.03256°
Mean anomaly
344.4046°
Eccentric anomaly
344.21912°
Mean motion
3.45951 °/min
Orbital period
104.06 mins
BSTAR
0.000086259
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Other satellites on launch #64 in the year 1964 (1964-10-10 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 22 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. |
|---|---|---|---|---|---|---|---|
| 11 mins | 2026-04-12 17:24:12.049Z | 5.903° NNE | 2026-04-12 17:29:12.049Z | 65.45° ENE | 32.48° | 2026-04-12 17:35:12.049Z | 139.433° SSE |
| 9 mins | 2026-04-12 19:11:12.049Z | 315.454° NNW | 2026-04-12 19:14:12.049Z | 276.6° WNW | 27.135° | 2026-04-12 19:20:12.049Z | 209.447° SW |
| 9 mins | 2026-04-13 06:51:12.049Z | 164.992° S | 2026-04-13 06:55:12.049Z | 85.408° E | 38.512° | 2026-04-13 07:00:12.049Z | 21.751° NNE |
| 6 mins | 2026-04-13 08:38:12.049Z | 263.166° W | 2026-04-13 08:40:12.049Z | 288.386° WNW | 18.737° | 2026-04-13 08:44:12.049Z | 336.23° NNW |
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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