Mission type | Technology | ||||||||||||||||||
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Operator | NASA | ||||||||||||||||||
Harvard designation | 1961 Alpha Theta 1 | ||||||||||||||||||
COSPAR ID | 1961-032A | ||||||||||||||||||
SATCAT no. | 206 | ||||||||||||||||||
Mission duration | 2 days | ||||||||||||||||||
Spacecraft properties | |||||||||||||||||||
Manufacturer | Jet Propulsion Laboratory | ||||||||||||||||||
Launch mass | 304 kilograms (670 lb) | ||||||||||||||||||
Power | 150 W | ||||||||||||||||||
Start of mission | |||||||||||||||||||
Launch date | 18 November 1961, 08:09:00 | UTC||||||||||||||||||
Rocket | Atlas LV-3 Agena-B | ||||||||||||||||||
Launch site | Cape Canaveral LC-12 | ||||||||||||||||||
End of mission | |||||||||||||||||||
Decay date | 20 November 1961 | ||||||||||||||||||
Orbital parameters | |||||||||||||||||||
Reference system | Geocentric | ||||||||||||||||||
Regime | Low Earth (High Earth planned) | ||||||||||||||||||
Semi-major axis | 6,574.2 kilometres (4,085.0 mi) | ||||||||||||||||||
Perigee altitude | 150 kilometres (93 mi) | ||||||||||||||||||
Apogee altitude | 242 kilometres (150 mi) | ||||||||||||||||||
Inclination | 33.3 degrees | ||||||||||||||||||
Period | ~89 minutes | ||||||||||||||||||
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Ranger 2 was a flight test of the Ranger spacecraft system of the NASA Ranger program designed for future lunar and interplanetary missions. Ranger 2 was designed to test various systems for future exploration and to conduct scientific observations of cosmic rays, magnetic fields, radiation, dust particles, and a possible hydrogen gas "tail" trailing the Earth.[1]