STEREO Mission Nick Chrissotimos NASA GSFC STEREO Project

STEREO Mission Nick Chrissotimos NASA GSFC STEREO Project Manager SWG May 2, 2005

Mission Description Mission Objectives: 2 -year mission to measure the causes and mechanisms of CME initiation and characterization of their propagation through the heliosphere. 1 -year extended data analysis. Organizations: NASA GSFC, JHU/APL, Naval Research Laboratory, University of California at Berkeley, University of New Hampshire, University of Minnesota, Observatoire de Paris. Mission Description: Two functionally identical spacecraft in heliocentric orbits at 1 AU (22°/yr drift from Earth orbit leading/lagging configuration). Each Observatory: Volume: Dry Mass: Power: 1. 2 w x 2. 0 l x 1. 5 h meters A: 535 kg B: 561 kg 509 W (EOL) Launch: To be launched from KSC on a Delta 2925 -10 L. Website: http: //stereo. gsfc. nasa. gov SWG May 2, 2005 2

Observatory Configuration SWG May 2, 2005 3

Observatories Stacked in the Launch Vehicle Fairing Ahead (“A”) Observatory Behind (“B”) Observatory Delta II 3 Stage SWG May 2, 2005 4

Launch Vehicle SWG May 2, 2005 5

Launch Timeline SWG May 2, 2005 6

Coverage Maps March 2006 February 2006 April 2006 SWG May 2, 2005 7

SWG May 2, 2005 8

SWG May 2, 2005 9

Separation and Solar Array Deployments SWG May 2, 2005 10

Spacecraft B and A SWG May 2, 2005 11

Spacecraft A SWG May 2, 2005 12

IMPACT IDPU Mechanically Integrated SWG May 2, 2005 13

IMPACT Boom SWG May 2, 2005 14