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We present narrow band AAO/UKST HAlpha images and medium and low resolutionoptical spectra of a nebula shell putatively associated with the Wolf-Rayetstar WR 60. We also present the first identification of this shell in the radioregime at 843 MHz and at 4850 MHz from the Sydney University Molonglo SkySurvey (SUMSS), and from the Parkes-MIT-NRAO (PMN) survey respectively. Thisradio emission closely follows the optical emission. The optical spectra fromthe shell exhibits the typical shock excitation signatures sometimes seen inWolf-Rayet stellar ejecta but also common to supernova remnants. A key findinghowever, is that the WR 60 star, is not, in fact, anywhere near the geometricalcentre of the putative arcuate nebula ejecta as had been previously stated.This was due to an erroneous positional identification for the star in theliterature which we now correct. This new identification calls into seriousquestion any association of the nebula with WR 60 as such nebula are usuallyquite well centred on the WR stars themselves. We now propose that this factcombined with our new optical spectra, deeper HAlpha imaging and newlyidentified radio structures actually imply that the WR 60 nebula should bereclassified as an unassociated new supernova remnant which we designateG310.5+0.8.

The putative nebula of the Wolf-Rayet WR 60 star: A case of mistaken identity and reclassification as a new supernova remnant G310.5+0.8