NASA’s Lucy spacecraft flies by the small asteroid Donald Johansson on April 20, 2025.
By flashing between images captured by NASA’s Lucy spacecraft on February 20th and 22nd, 2025, this animation shows Donald Johansson’s perceived movement against the background star as the spacecraft rapidly approaches the asteroid. Image credit: NASA/GODDARD/SWRI/JOHNS HOPKINS APL.
Donald Johansson It is a carbonaceous small intestine about 4 km (2.5 miles) in diameter.
First discovered by American astronomer Sheltebas at the Siding Spring Observatory on March 2, 1981, it orbited within the inner region of the main asteroid belt.
NASA’s Lucy spacecraft will pass within 960 km (596 miles) of Donald Johansson on April 20th.
“This second asteroid encounter for Lucy will serve as a rehearsal for Jupiter’s Trojan asteroid outfit, the spacecraft’s main target,” a member of the Lucy team said in a statement.
“The spacecraft had already successfully observed the main belt asteroid Dinkinesh and its moon, Serum and Serum in November 2023.”
These new images have been captured Lucy Long Range Reconnaissance Imager (L’Lorri) Musical instrument.
This diagram shows NASA’s Lucy spacecraft passing through one of the Trojan asteroids near Jupiter. Image credit: Southwest Research Institute.
“But at a distance of 70 million km (45 million miles), Donald Johansson is still dim, but he stands out clearly in this area of relatively faint stars in the constellations of Sextane,” the researchers said.
“The north of the sky is on the right side of the frame, with a 0.11-degree field of vision corresponding to 85,500 miles (140,000 km) of asteroidal distance.”
“Of the two images, another dimly lit asteroid can see the photobomb in the quadrant at the bottom right of the image.”
“However, as the headlights of approaching cars often remain relatively still, Donald Johansson’s obvious movement between these two images is much smaller than that of this intruder, who has fallen out of sight in the second image.”
According to scientists, Donald Johansson was named after anthropologist Donald Johansson, who discovered “Lucy.” Lucy Mission is named after the fossil.
“Lucy will continue to image Donald Johansson as part of his optical navigation program for the next two months. The optical navigation program will use the apparent position of the asteroid against the star’s background to ensure an accurate flyby,” they said.
Source: www.sci.news
