Assertion: wind | /r/AtLocation | a halo orbit
Facets:
value: to observe the unperturbed solar wind
type: PURPOSE
value: around the l1 lagrange point
type: LOCATION
value: after several orbits through the magnetosphere
type: TEMPORAL
Source sentences:
text: After several orbits through the magnetosphere, Wind was placed in a halo orbit around the L1 Lagrange point -- more than 200 Re upstream of Earth -- in early 2004 to observe the unperturbed solar wind that is about to impact the magnetosphere of Earth.