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). Payloads include a variety of satellites, spacecraft, and rockets 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 | LEO |
| Last TLE update | 12 hours ago |
| Origin | |
| Manufacturer | APL |
| Mission | Civil Science |
| Bus & Motor | TRANSIT 5, Unknown motor |
| Mass | 52 kg wet, 52 kg dry |
| Launch date (UTC) | |
| Launch vehicle | |
| Launch site | |
| Object type | Payload Rocket body Debris |
| Shape & HBR | Oct Cyl + 4 Pan + 2 Rod, 4 m |
| Radar Cross Section | 1.165 m², Large (>1 m²) |
Expand to show TLE details & history
TLE from 12 hours ago
0 EXPLORER 22
1 00899U 64064A 25077.60813202 .00000387 00000-0 33176-3 0 9990
2 00899 79.6866 265.4786 0119781 297.2960 61.6034 13.82846449 42005Epoch: 2025-03-18T14:35Z
Definitive object data (Epoch: 2025-03-18T14:35:42.606Z)
| Latitude | 0.00004° |
| Longitude | -129.85709° |
| Altitude | 915.665 km |
| Speed | 7.415 km/s |
| True Right ascension | 17h 41m 54s |
| True Declination | 0° 00' 00" |
| Sunlit | Object was in daylight at TLE epoch |
Visualization TLE readout
| Latitude | 23.9638° |
| Longitude | -125.80148° |
| Altitude | 953.065 km |
| Speed | 7.379 km/s |
| Apparent Right ascension | 18h 40m 40s |
| Apparent Declination | -5° 35' 32" |
| Sunlit | Object is in daylight |
Visualization observer readout
| Local Sidereal Time | 07:39:09 |
| Azimuth | 24.824° NE |
| Elevation | -53.239° |
| Doppler factor | 1 |
Orbital elements
| Apogee altitude | 1,038.888 km |
| Perigee altitude | 863.308 km |
| Semi-major axis | 7,329.235 km |
| Eccentricity | 0.0119781 |
| Inclination | 79.6866° |
| RAAN | 265.4786° |
| Arg. of periapsis | 297.296° |
| True anomaly | 62.8194° |
| Mean anomaly | 61.6034° |
| Eccentric anomaly | 62.21054° |
| Mean motion | 3.45904 °/min |
| BSTAR | 0.00033176 |
| Orbital period | 104.08 mins |
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Other satellites on launch #64 in the year 1964 (1964-10-10 UTC)
| SCOUT X-4 R/B, 907 |
| SCOUT X-4 DEB, 976 |
| SCOUT X-4 DEB, 977 |
EXPLORER 22 Visibility forecast
Observer location: undefined°, undefined
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 | 2025-03-19 13:16:59.306Z | 188.079° SSW | 2025-03-19 13:21:59.306Z | 45.298° ENE | 44.9° | 2025-03-19 13:27:59.306Z | 12.098° NNE |
| 5 mins | 2025-03-19 15:05:59.306Z | 277.825° WNW | 2025-03-19 15:07:59.306Z | 298.311° NW | 14.045° | 2025-03-19 15:10:59.306Z | 327.859° NNW |
| 6 mins | 2025-03-19 22:26:59.306Z | 32.139° NE | 2025-03-19 22:29:59.306Z | 62.187° ENE | 15.962° | 2025-03-19 22:32:59.306Z | 92.22° ESE |
| 11 mins | 2025-03-20 00:10:59.306Z | 346.148° N | 2025-03-20 00:15:59.306Z | 282.233° WNW | 44.677° | 2025-03-20 00:21:59.306Z | 174.627° S |
Event ID | Pc | Md | Secondary | Secondary name | Country | Click to unsort rows by TCA header |
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