The luminosity, light curve, post-maximum spectrum, and lack of a progenitor on deep pre-outburst images suggest that SN2010U was a luminous, fast nova. Its outburst magnitude is consistent with that for a fast nova using the maximum magnitude-rate of decline relationship for classical novae.
- novae, cataclysmic variables
- stars: individual (SN 2010U)
- supernovae: individual (SN 2010U)