GRAIL-A (Ebb)

Mapped lunar gravity field; deliberate impact.

Coordinates: 75.62, -26.6 (positive-east)
Era: B (1990-2019)
Parent mission: GRAIL
Role: orbiter/impactor
Operator: NASA
Nation: USA
Launched (UTC): 2011-09-10
Reached Moon (UTC): 2011-12-31 orbit / 2012-12-17 impact
Event type: orbiter/impactor
Outcome: success
Site: Sally Ride site (massif nr Philolaus/Mouchez)
Coordinate note: CONTESTED: NSSDCA vs LROC/telemetry coords differ; lon convention varies
Left on surface: impact debris
Returned material: none
Current status: impacted
Operational status (derived): inactive
Source grade: primary