An S-45 satellite before launch
|Mission duration||Failed to orbit|
|Launch mass||33.6 kilograms (74 lb)|
|Start of mission|
|Launch date||24 May 1961, 19:48:05UTC|
|Rocket||Juno II AM-19G|
|Launch site||Cape Canaveral LC-26B|
|Regime||Highly elliptical (planned)|
S-45A was an American satellite, which was lost in a launch failure in 1961. The satellite was intended to operate in a highly elliptical orbit, from which it was to have provided data on the shape of the ionosphere, and on the Earth's magnetic field. It was part of the Explorer programme, and would have been designated Explorer 12 had it reached orbit. It was the second of two identical satellites to be launched; the first, S-45, had also been lost in a launch failure, earlier in the year.
S-45A was launched aboard a Juno II rocket, serial number AM-19G. It was the final flight of the Juno II. The launch took place from Launch Complex 26B at the Cape Canaveral Air Force Station at 19:48:05 UTC on 24 May 1961. The system which was intended to ignite the second stage malfunctioned, and as a result that stage failed to ignite. The rocket failed to achieve orbit.
- "Explorer S45A". NSSDC Master Catalog. NASA. Retrieved 14 July 2010.
- Wade, Mark. "P-14". Encyclopedia Astronautica. Archived from the original on 13 June 2010. Retrieved 14 July 2010.
- McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 14 July 2010.
- Krebs, Gunter. "Explorer: S-45". Gunter's Space Page. Retrieved 14 July 2010.
- "Explorer Program". Mission and Spacecraft Library. NASA. Archived from the original on 27 January 2008. Retrieved 14 July 2010.
|This article about one or more spacecraft of the United States is a stub. You can help Wikipedia by expanding it.|