A very old text on mundane astronomy called Brihat Samhita by Varahamihira has a chapter on comets and another on the Saptarishis.
It states that when comets bisect the Saptarishi mandala, the association is that of affliction (same is said about the 2 Vishakha comets obscuring the Saptarishis at the time of the Mahabharata war)
This has happened in Feb and March 2020.
This comet called Atlas will further go on to cross Aldebaran in retrograde transit in May and June 2020. A chapter on Comets comes in my book on dating the Mahabharata war.
Here is a short film on comet Atlas (C2019 Y4)