The physical properties of a slow nova in the bulge of M31

Observations are presented of an extremely slow nova that was discovered in the bulge of M31 in 1986. The evolution of the object was monitored with subsequent yearly spectra until 1990, as part of a general spectroscopic survey of novae in M31 underway at McDonald Observatory. The spectra cover the nova's evolution in the nebular phase, and these observations have made this nova the most extensively observed extragalactic nova to date. This has provided a unique opportunity to make the first detailed comparison of the evolution and properties of an extragalactic nova with those in our own Galaxy