Vanguard 1 - Satellite Information Designation Spacetrack catalog number 5 COSPAR ID 1958-002-B Name in Spacetrack catalog VANGUARD 1 Satellite Details Orbit 650 x 3,832 km, 34.2° Category Scientific Country/organisation of origin United States Mass 1 kg Intrinsic brightness (Magnitude) 10.2 (at 1000km distance, 50% illuminated) Maximum brightness (Magnitude) 8.3 (at perigee, 100% illuminated) Launch Date (UTC) Launch site Cape Canaveral Air Force Station,

United States Launch vehicle Vanguard Description

The oldest man-made object in orbit! Links to further information http://www.spaceviews.com/1998/03/article1a.html Follow @heavensabovecom