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LES-1, also known as Lincoln Experimental Satellite 1, was a communications satellite launched by the United States Air Force on February 11, 1965, to study the use of Super High Frequency radio transmissions. It never achieved optimal orbit and was out of contact for more than 40 years before spontaneously resuming transmissions in 2012.
Launch of the Titan IIIA rocket with satellite Lincoln Experimental Satellite 1. The series had satellites named LES-1 through LES-9. They suffered a number of launch problems - LES-1 and LES-2 were supposed to be delivered to the same 2,800 x 15,000 km orbit, [3] though a failure of a boost stage left LES-1 in a 2,800 km circular orbit. [4]
Lincoln Experimental Satellite 3, also known as LES-3, was a communications satellite, the third of nine in the Lincoln Experimental Satellite. Launched by the United States Air Force (USAF) on 21 Dec 1965, it was stranded in a Geostationary Transfer Orbit rather than its planned circular high orbit. Despite this, LES-3 returned good data on ...
LES-2. Lincoln Experimental Satellite 2, also known as LES-2, was a communications satellite, the second of nine in the Lincoln Experimental Satellite. Launched by the United States Air Force (USAF) on 6 May 1965, it demonstrated many then-advanced technologies including active use of the military's SHF (super high frequency) band (7 to 8 GHz ...
Galaxy 15. Galaxy 15 is an American telecommunications satellite which is owned by Intelsat. It was launched for and originally operated by PanAmSat, and was subsequently transferred to Intelsat when the two companies merged in 2006. It was originally positioned in geostationary orbit at a longitude of 133° West, from where it was used to ...
LES-5 →. Lincoln Experimental Satellite 4, also known as LES-4, was a communications satellite, the fourth of nine in the Lincoln Experimental Satellite, and the first of the series designed for operations at geosynchronous altitudes. Launched by the United States Air Force (USAF) on 21 December 1965, it demonstrated many then-advanced ...
The U.S. government has not publicly stated if there was a failure of Zuma, [29] and this secrecy has generated speculations on its purpose and its fate. [30] A number of articles published by the amateur satellite tracking community stated that if the satellite was still in orbit or operating covertly, then it would likely be located visually.
Pa 30 and the central star IRAS 00500+6713, which is a zombie star Main articles: SN 1181 and IRAS 00500+6713 SN 1181 was observed by Chinese and Japanese astronomers in 1181 AD.