A newly-discovered comet may soon make an appearance in the evening sky. Dubbed SOHO-2875, it was spotted in photos taken by the Solar and Heliospheric Observatory (SOHO) earlier this week. Astronomer Karl Battams, who maintains the Sungrazer Project website, originally thought this little comet would dissipate after its close brush with the Sun. To his and our delight, it’s now outperforming expectations. Given the comet’s rapid movement away from the Sun, we won’t have to wait long to find out whether it might be visible in a telescope.
Most sungrazing comets discovered by SOHO are members of the Kreutz family, a group of icy fragments left over from the breakup of a single much larger comet centuries ago. We know they’re all family by their similar orbits. The newcomer, SOHO’s 2,875th comet discovery, is a “non-group” comet or one that’s unrelated to the Kreutz family or any other comet club for that matter. According to Battams these mavericks appear several times a year.
What’s unusual about #2,875 is how bright it is. At least for now, it appears to have survived the Sun’s heat and gravitational tides and is turning around to the east headed for the evening sky. I’m no expert but having looked at many SOHO photos over the years, I’d estimate the comet is presently about magnitude +2.5 and some 5° from the Sun. No one can say for sure whether it has what it takes to hang on, so don’t get your hopes up just yet.
We’ll be watching and waiting. I’ll have an update on SOHO-2875’s progress soon.