Potentially Hazardous Asteroid (138971) 2001 CB21 close encounter: image – 2 Mar. 2022
We re-observed the potentially hazardous asteroid (138971) 2001 CB21 a couple of nights ago and here we present our latest image.
The image above comes from a single 180-second exposure, remotely taken with the “Elena” (PlaneWave 17″+Paramount ME+SBIG STL-6303E) robotic unit available at Virtual Telescope. The telescope tracked the apparent motion of the asteroid, so it looks like a sharp dot, with surrounding stars appearing as long trails.
At the imaging time, asteroid (138971) 2001 CB21 was at about 5.4 millions of km from the Earth and it was slowly approaching us. It was discovered by the LINEAR survey on 2 Feb. 2001.
This 560 – 1300 meters large asteroid will reach its minimum distance (about 4.9 millions of km, 13 times the average lunar distance) from us on 4 Mar. 2022, at 07:59 UTC (source: Nasa/JPL). Of course, there are no risks at all for our planet.
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