It will come to perihelion on 21 April 2022 at 0.287 AU (42.9 million km). from the Sun. It might reach apparent magnitude 5-7 by late April 2022, but will only be 15 degrees from the Sun. C/2021 O3 will make its closest approach to Earth on 8 May 2022 at a distance of 0.60 AU (90 million km). As a dynamically new comet from the Oort cloud there is a high risk of disintegration.
C/2021 O3 probably took millions of years to arrive from the outer Oort cloud and may be ejected from the Solar System.
Check out this article: https://earthsky.org/astronomy-essentials/comet-c-2021-03-comets-2022/
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.