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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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Identifier
899, 1964-064A
Orbit
LEO
Country
Flag of USUS
Related business
Manufacturer
APL
Mission
Civil Science
Bus & Motor
TRANSIT 5, Unknown motor
Mass
52 kg wet, 52 kg dry
Launch date (UTC)
1964-10-10 (61 years ago)
Launch vehicle
SCOUT X-4
Launch site
Air Force Western Test Range (AFWTR)
Object type
Payload
Rocket body
Debris
Shape & HBR
Oct Cyl + 4 Pan + 2 Rod, 2.0 m
Radar Cross Section
1.165 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 7 hours ago

TLE from 7 hours ago
0 EXPLORER 22
1 00899U 64064A   25242.85409087  .00000202  00000-0  17030-3 0  9990
2 00899  79.6874  84.6988 0119508 232.6266 126.3956 13.82925409 64840
Epoch: 2025-08-30T20:29Z
TLE epoch observation values (Epoch: 2025-08-30T20:29:53.451Z)
Latitude
0.00006°
Longitude
157.94368°
Altitude
1,009.008 km
Speed
7.321 km/s
True Right ascension
05h 38m 47s
True Declination
0° 00' 00"
Sunlit
Object was in daylight at epoch
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
N/A
Visualization observer readout
Local Sidereal Time
18:55:40
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,038.406 km
Perigee altitude
863.232 km
Semi-major axis
7,328.956 km
Eccentricity
0.01195
Inclination
79.6874°
RAAN
84.6988°
Arg. of periapsis
232.6266°
True anomaly
127.48818°
Mean anomaly
126.3956°
Eccentric anomaly
126.94286°
Mean motion
3.45923 °/min
Orbital period
104.07 mins
BSTAR
0.0001703
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Other satellites on launch #64 in the year 1964 (1964-10-10 UTC)

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