Vanguard 1, First Solar-Powered Satellite, Still Flying at 50
Vanguard 1, First Solar-Powered Satellite, Still Flying at 50
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SPACE.comJeremy Hsu
From space dream to space junk: The Vanguard 1 satellite completes 60 years in space today
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The oldest artificial satellite still in orbit is Vanguard I, launched March 3, 1958. Its mass is 1.60 kg. Neglecting atmospheric drag, the satellite would still be in its initial orbit, with a minimum distance from the center of the Earth of 7.02 Mm and a speed at this perigee point of 8.23 km/s. For this orbit, find (a) the total energy of the satellite–Earth system and (b) the magnitude of the angular momentum of the satellite. (c) At apogee, find the satellite’s speed and its distance from t
The oldest artificial satellite still in orbit is Vanguard I, launched Marc…
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6.9K views · 157 reactions | March 17th - on this day in 1958, the U.S. Navy conducted the first successful Vanguard launch, lofting Vanguard 1 to Medium Earth Orbit. The tiny, 1.46 kg Vanguard 1 was the first satellite to have solar electric power. Today, Vanguard 1 and the launch vehicle's upper stage remain the oldest human-made objects still in Earth orbit. | NASASpaceflight.com | Facebook
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