Designation
|
Spacetrack catalog number
|
20
|
|
COSPAR ID
|
1959-007-A
|
|
Name in Spacetrack catalog
|
VANGUARD 3
|
Satellite Details
|
Orbit
|
507 x 3,221 km, 33.4°
|
| Category | unknown |
| Country/organisation of origin | United States |
| Intrinsic brightness (Magnitude) | 7.7 (at 1000km distance, 50% illuminated) | | Maximum brightness (Magnitude) | 4.8 (at perigee, 100% illuminated) |
Launch
|
Date
(UTC)
|
18 September 1959 05:20
|
| Launch site | Cape Canaveral Space Force Station,
United States |
| Launch vehicle | Vanguard |
|
|