Vanguard III - Norad ID: 20
| Spacetrack Directory Name | VANGUARD 3 |
| Alternative name | Vanguard III |
| Follow VANGUARD 3 | VANGUARD 3 Tracker |
| Pass predictions VANGUARD 3 | Pass predictions VANGUARD 3 |
| Orbit launches |
|
| Days in orbit | 24443 |
| Country/organisation of origin | USA (US) |
| Starting point | AFETR (Kennedy Space Center/Cape Canaveral, USA) |
| Type | Satellite |
| Perigee | 508 km |
| Apogee | 3262 km |
| Orbit slope (inclination) | 33.34° |
| Laps per day | 12 |
| Height VANGUARD 3 | 1966.33 km |
VANGUARD 3, 20 is a payload satellite owned by GSFC (US) in LEO that was launched on Fri, 18 Sep 1959 UTC via a VANGUARD 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.
satellite VANGUARD 3 Date of exalting 18.09.1959y. Average height of ISS VANGUARD 3 hundred 1966.33 km. Average velocity VANGUARD 3 is 24894.79 km/h. Inclination VANGUARD 3 satellite 33.34°.