https://www.legacysurvey.org//viewer/?ra=50.6226&dec=-38.6091&layer=des-dr1&zoom=15
After an MPC query, I got the object C/2013 A 1 (also known as Siding Spring)
I also found this relevant post - Comet C/2013 A1 (Siding Spring) found in DES images by backyard worlds volunteer