In a March 2000 observation of the galaxies, a prominent green star-like object was seen in one of the arms. Astronomers theorized that it could have been a supernova, but the unique filtering properties of the foreground galaxy made it difficult to decide definitively.1
1Keel, Bill; Frattare, Lisa. "NGC 3314 Variable Object". heritage.stsci.edu. Retrieved 2015-11-05.
POSSIBLE NOVA IN NGC 3314
W. C. Keel, University of Alabama; and L. M. Frattare, Space Telescope Science Institute, on behalf of the Hubble Heritage Team, report the detection of a possible nova in the overlapping galaxy pair NGC 3314A and 3314B. HST WFPC2 observations with the F450W, F555W, and F675W filters on Mar. 10.47-10.57 UT show a new stellar object that was not present on WFPC2 F450W (to B about 25.5) and F814W images from 1999 Apr. 4. Standard (approximate) transformations to the UBV system give magnitudes B = 22.42, V = 21.64, R = 20.87. The new object is located at R.A. = 10h37m12s.82, Decl. = -27o40'51".5 (equinox 2000.0), which is 1".2 west and 10".3 north of the optically brighter foreground nucleus of NGC 3314A (itself at position end figures 12s.91, 41'01".8).