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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Edit Public Description
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 25308.61779852 .00000177 00000-0 14660-3 0 9994
2 00899 79.6930 12.7423 0120228 63.9718 297.3754 13.82964250 73939Epoch: 2025-11-04T14:49Z
TLE epoch observation values (Epoch: 2025-11-04T14:49:37.792Z)
Latitude
0.00002°
Longitude
106.23259°
Altitude
916.505 km
Speed
7.414 km/s
True Right ascension
00h 50m 58s
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
17:47:23
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,038.794 km
Perigee altitude
862.568 km
Semi-major axis
7,328.818 km
Eccentricity
0.01202
Inclination
79.693°
RAAN
12.7423°
Arg. of periapsis
63.9718°
True anomaly
296.14356°
Mean anomaly
297.3754°
Eccentric anomaly
296.76032°
Mean motion
3.45933 °/min
Orbital period
104.07 mins
BSTAR
0.0001466
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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. |
|---|---|---|---|---|---|---|---|
| 10 mins | 2025-11-05 04:49:18.372Z | 167.235° S | 2025-11-05 04:54:18.372Z | 97.311° ESE | 36.956° | 2025-11-05 04:59:18.372Z | 24.217° NE |
| 6 mins | 2025-11-05 06:37:18.372Z | 258.359° W | 2025-11-05 06:40:18.372Z | 298.353° NW | 19.882° | 2025-11-05 06:43:18.372Z | 334.858° NNW |
| 10 mins | 2025-11-05 15:43:18.372Z | 2.358° NNE | 2025-11-05 15:47:18.372Z | 73.022° E | 40.3° | 2025-11-05 15:53:18.372Z | 154.664° SSE |
| 6 mins | 2025-11-05 17:29:18.372Z | 305.233° NW | 2025-11-05 17:32:18.372Z | 270.399° WNW | 18.041° | 2025-11-05 17:35:18.372Z | 237.027° WSW |
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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