page_title: TacSat-4
hierarchical_section_title: TacSat-4
caption_attribution_description: English: Computer model of the TacSat-4 satellite
context_page_description: TacSat-4 is the fourth in a series of U.S. military experimental reconnaissance and communication satellites. The Naval Research Laboratory is the program manager. The Office of Naval Research sponsored the development of the payload and funded the first year of operations. The Office of the Director of Defense Research and Engineering funded the standardized spacecraft bus and the Operationally Responsive Space Office funded the launch that will be performed by the Air Force's Space and Missile Systems Center.
  The spacecraft was completed by the end of 2009, and was launched on September 27, 2011, on a Minotaur IV rocket into a highly elliptical orbit.
context_section_description: TacSat-4 is the fourth in a series of U.S. military experimental reconnaissance and communication satellites. The Naval Research Laboratory (NRL) is the program manager. The Office of Naval Research (ONR) sponsored the development of the payload and funded the first year of operations. The Office of the Director of Defense Research and Engineering (DDR&E) funded the standardized spacecraft bus and the Operationally Responsive Space Office (ORS) funded the launch that will be performed by the Air Force's Space and Missile Systems Center (SMC).
  The spacecraft was completed by the end of 2009, and was launched on September 27, 2011, on a Minotaur IV rocket into a highly elliptical orbit.
caption: Computer model of TacSat-4
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