2010CBET.2344....2J

Prior to the confirming image by CHASE (above), 2010ev was posted on the Central Bureau's unconfirmed-objects webpage. Several hours after that posting, C. Jacques (Belo Horizonte, Brazil) reported the independent discovery of 2010ev in the course of the Brazilian Supernovae Search (by C. Colesanti, E. Pimentel, T. Napoleao, and himself), noting mag 15.0 and position end figures 29s.06, 50".7 (offset 5".4 east, 10".5 south) on their unfiltered CCD image (limiting magnitude 18.0) taken with a 0.30-m Schmidt- Cassegrain f/3 reflector at the CEAMIG-REA Observatory on June 28.89 UT, adding that nothing is visible at this position on a CCD image taken on 2005 Jan. 15.12 (limiting magnitude 18.5) or on a Palomar Sky Survey plate from 1984 Feb. 3 (limiting red mag 19.5).