EXPLORER 1, 4 (Decayed)
Orbit data source: Public
EXPLORER 1, 4 was an American payload satellite that was launched on Sat, 01 Feb 1958 UTC via a Jupiter C launch vehicle from the Air Force Eastern Test Range (AFETR). 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.
Next visibility unknown
No 3D visualization available: No data
EXPLORER 1 details
| NORAD ID | 4 |
| COSPAR ID | |
| Orbit | Decayed |
| Last TLE update | Unknown |
| Origin | |
| Manufacturer | JPL |
| Bus | Explorer |
| Motor | Unknown |
| Mass | 14 kg wet, 8 kg dry |
| Launch date (UTC) | |
| Launch vehicle | |
| Launch site | |
| Object type | Payload Rocket body Debris |
| Radar Cross Section | RCS unknown |
ABMA/JPLA (US)Predictive object data (real-time)
| Latitude | Unknown |
| Longitude | Unknown |
| Altitude | Unknown |
| Speed | Unknown |
| Apparent Right ascension | Unknown |
| Apparent Declination | Unknown |
| Sunlit | Unknown |
Predictive observer data (real-time)
| Local Sidereal Time | 19:22:40 |
| Azimuth | Unknown |
| Elevation | Unknown |
| Doppler factor | Unknown |
Orbital elements
| Apogee | Unknown |
| Perigee | Unknown |
| Semi-major axis | Unknown |
| Eccentricity | Unknown |
| Inclination | Unknown |
| RAAN | Unknown |
| Arg. of periapsis | Unknown |
| True anomaly | Unknown |
| Mean anomaly | Unknown |
| Eccentric anomaly | Unknown |
| Mean motion | Unknown |
| BSTAR | Unknown |
| Period | Unknown |
Definitive object data
| Latitude | Unknown |
| Longitude | Unknown |
| Altitude | Unknown |
| Speed | Unknown |
| True Right ascension | Unknown |
| True Declination | Unknown |
| Sunlit | Object was in daylight at TLE epoch |
No data available
Other satellites on launch #1 in the year 1958 (1958-02-01 UTC)
| EXPLORER 1, 4 (Decayed) |
EXPLORER 1 Visibility forecast
Observer location: 39.9160978°, -105.1181434
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. |
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