Only very recently a new comet was discoverd which could be visible with the naked eye somewhere end of May. Currently the comet is only seen in the southern hemisphere but as from mid May the comet is also visible in the northern hemisphere. At that time however very low above the horizon and just after sunset.
It's not clear yet of this comet, C/2020 F8 SWAN, is periodical or not. Latest observations conclude the comet is hyperbolic and thus will be seen only once.
I uploaded the orbit elements of the comet C/2020 F8 SWAN already into Stellarium but as said above, changes are still possible.
