Science and Exploration

Lucy Spacecraft Adjusts Course For An steroid Flyby In November

By Keith Cowing
Press Release
NASA
May 19, 2023
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Lucy Spacecraft Adjusts Course For An steroid Flyby In November
As the NASA Lucy spacecraft travels through the inner edge of the main asteroid belt in the Fall of 2023, the spacecraft will fly by the small, as-of-yet unnamed, asteroid (152830) 1999 VD57. This graphic shows a top-down view of the Solar System indicating the spacecraft’s trajectory shortly before the November 1 encounter. Credits: NASA’s Goddard Space Flight Center

On May 9, NASA’s Lucy spacecraft carried out a trajectory correction maneuver to set the spacecraft on course for its close encounter with the small main belt asteroid Dinkinesh. The maneuver changed the velocity of the spacecraft by only about 7.7 mph (3.4 m/s).

Even though the spacecraft is currently travelling at approximately 43,000 mph (19.4 km/s), this small nudge is enough to move the spacecraft nearly 40,000 miles (65,000 km) closer to the asteroid during the planned encounter on Nov. 1, 2023. The spacecraft will fly a mere 265 miles (425 km) from the small, half-mile- (sub-km)-sized asteroid, while travelling at a relative speed of 10,000 mph (4.5 km/s).

The Lucy team will continue to monitor the spacecraft’s trajectory and will have further opportunities to fine tune the flight path if needed.

The Lucy team is also continuing to analyze the data collected from its spring instrument calibration campaign and make other preparations for the mission’s first asteroid encounter. This encounter will provide a valuable test of the spacecraft’s systems and procedures to make sure that everything operates as expected during the mission’s high-speed asteroid encounters.

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