- Instance of
All data
18 statements · 28% with external sources · numbers in brackets are citations
- Launched
- July 26, 1958
1
- July 26, 1958
- Significant event
- rocket launch(July 26, 1958) location: Cape Canaveral Launch Complex 5
1
- rocket launch(July 26, 1958) location: Cape Canaveral Launch Complex 5
- Time of object orbit decay
- October 23, 1959
- Mass
- 25.5 kg
- Semi-major axis
- 7,616.2 km
- Eccentricity
- 0.1279
- Inclination
- 50.3 degree
- Orbital period
- 110.2 min
- Apoapsis
- 2,213 km
- Periapsis
- 263 km
On other databases
4 identifiers linking Explorer 4 across the web's reference databases