It is currently approaching Earth and its nominal trajectory indicates that it will be temporarily captured by Earth by October 15, 2020.
It will also make another close approach around February 2021, at a nominal perigee distance of approximately 0.58 Lunar Distance 140,000 miles.
2020 SO has some features that set it apart from ordinary asteroids. According to NASA/JPL calculations, the object will soon pass by Earth’s moon at a speed of 1,880 miles per hour or .5 miles per second.
That is an extremely slow speed for an asteroid.
Around the time of closest approach on 1 December 2020, the object will only brighten to about apparent magnitude 14.1, and will require a telescope with roughly a 150mm objective lens to be seen visually.
At the time of its discovery, 2020 SO had unremarkable motion typical of a main-belt asteroid.
However, the four observations that Pan-STARRS obtained over the course of 1.4 hours showed non-linear motion due to the rotation of the observer around Earth’s axis, which is a signature of a nearby object.
Video Image Credit:
By Tony873004 – Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=94279688
By Tony873004 – Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=94279687
By dronepicr – Haleakala Observatory Maui, CC BY 2.0, https://commons.wikimedia.org/w/index.php?curid=74172634
For more information
Source: Wikipedia/ Earth-Sky
Rod is a blogger, writer, filmmaker, photographer, daydreamer who likes to cook. Rod produces and directs the web series, CUPIC: Diary of an Investigator. He is also the editor, producer and administrator of TNC Network.