USA-193, also known as NRO Launch 21 (NROL-21 or simply L-21), was a United States military reconnaissance satellite (radar imaging) launched on 14 December 2006. [2] It was the first launch conducted by the United Launch Alliance (ULA). [3] Owned by the National Reconnaissance Office (NRO), the craft's precise function and purpose were classified.

USA 193号卫星（也称NROL-21或简称L-21，指美国国家侦察办公室第21次发射）是于2006年12月14日 21:00:00（GMT时间）由三角洲二號運載火箭（Delta II）从美国范登堡空军基地（Vandenberg Air Force Base）发射升空的一颗间谍卫星。重量为2300千克。

USA-193, also known as NRO launch 21 (NROL-21 or simply L-21), was an American military reconnaissance satellite launched on December 14, 2006. The USA-193 was owned by the NRO and its precise function and purpose are classified [clarification needed].

usa 193卫星是于2006年12月14日 21:00:00（gmt时间）由德尔它-2运载火箭从美国范登堡空军基地发射升空的一颗间谍卫星。 重量为2300千克。 设计轨道为远地点365公里，近地点349公里。

2021年6月21日 · USA-193 was a National Reconnaissance Office (NRO) satellite launched into low Earth orbit by a Delta II rocket on December 14, 2006. It was a top-secret satellite, apparently of a new or experimental design based upon its unique launch vehicle (rarely used by the NRO) and orbital inclination.

美国193号卫星 （英语： USA 193 ；也称 NROL-21 或简称 L-21 ，指美国国家侦察办公室第21次发射）是于2006年12月14日 21:00:00（GMT时间）由三角洲二号运载火箭（Delta II）从美国范登堡空军基地（Vandenberg Air Force Base）发射升空的一颗间谍卫星。重量为2300千克。

USA 193 is an American military satellite that was launched from Vandenberg AFB at 21:00 UT on 14 December 2006. It is a highly classified spacecraft, owned and operated by the National Reconnaissance Office (NRO).

2015年5月1日 · USA 193 is an American military satellite that was launched from Vandenberg AFB at 21:00 UT on 14 December 2006. It is a highly classified spacecraft, owned and operated by the National Reconnaissance Office (NRO).

2008年8月1日 · To be sure, the shootdown of the U.S. satellite was an impressive feat of technology. The Navy missile launched on 21 February 2008 achieved a head-on collision with the 2.3-metric-ton USA 193, dispersing the contents of the vehicle’s propellant tank [see photo, "Hydrazine Bomb"] harmlessly in space.

2006年12月14日 · English: USA-193, also known as NRO launch 21 (NROL-21 or simply L-21), was a National Reconnaissance Office radar surveillance satellite, part of the Future Imagery Architecture, which failed shortly after launch. It was orbited by a Delta II rocket, launched from Vandenberg Air Force Base Space Launch Complex 2W on 14 December 2006.