丁基内什小行星的月出

2023年11月4日

Dinkinesh Moonrise
Image Credit: NASA/Goddard, SwRI, Johns Hopkins APL, NOIRLab

Explanation: Last Wednesday the voyaging Lucy spacecraft encountered its first asteroid, 152830 Dinkinesh, and discovered the inner-main belt asteroid has a moon. From a distance of just over 400 kilometers, Lucy’s Long-Range Reconnaissance Imager captured this close-up of the binary system during a flyby at 4.5 kilometer per second or around 10,000 miles per hour. A marvelous world, Dinkinesh itself is small, less than 800 meters (about 0.5 miles) across at its widest. Its satellite is seen from the spacecraft’s perspective to emerge from behind the primary asteroid. The asteroid moon is estimated to be only about 220 meters wide.

Tomorrow’s picture: aurora borealis

丁基内什小行星的月出
影像提供: NASA/Goddard, SwRI, Johns Hopkins APL, NOIRLab

说明: 上星期三，曳航的露西号宇宙飞船遇到了它的第一颗小行星152830 Dinkinesh（丁基内什），并发现这颗小行星主带内围的小行星拥有一颗卫星。以每秒4.5公里（16,000公里/小时）速度飞掠的露西号之远距侦察相机，于略远于400公里处拍下了这个双天体系统的特写影像。丁基内什本身就是一个奇妙的天体，很娇小，最宽处不到800公尺。拍照的当时，从这部飞行器的视角看出去，这颗母小行星的卫星正从它的后方出来。据估计，这颗小行星的卫星之宽度大约只有220公尺。 （Lucy spacecraft 露西号宇宙飞船；Dinkinesh 丁基内什，南猿露西在阿姆哈拉语的名字）

明日的图片: aurora borealis