C/2015 D1 (SOHO) is a sungrazing comet that was discovered through images taken by the Solar and Heliospheric Observatory (SOHO) in 2015. It is one of a few comets discovered by SOHO that were successfully detected by ground observations.
References
External links C/2015 D1 at the JPL Small-Body Database C/2015 D1 (SOHO) at Seiichi Yoshida's website