COMMISSION 27 OF THE I. A. U. INFORMATION BULLETIN ON VARIABLE STARS Number 1331 Konkoly Observatory Budapest 1977 August 22 A BRIGHT NOVA IN THE SURROUNDINGS OF THE ANDROMEDA NEBULA In AJ 78, 375-376, 1973, van den Bergh, Herbst and Pritchet published a list of variable objects near M 31. Among them is variable "m" (alpha=0h29m28s; delta=+41d41' ; 1950) which the authors saw only on two plates taken on August 26, 1971. Romano (AJ 82, 319-321, 1977) examined this object on plates of the Asiago Observatory. On this series of plates the star was always below the plate limit (>19.5m), except in the same period of time when van den Bergh et al. observed the variable near the maximum at about 12.8m. I examined 295 plates of the Sonneberg field nu And between J.D. 244 0802.....1988 (plate limit ~ 18.0m). Object "m" is visible only on 15 plates between J.D. 244 1192.....1217; on all the other plates it is beyond the plate limit. In Figure 1 the light curve is shown. The value 14.9m at J.D. 1209, given by Romano, seems to be too bright. I observed 15.85m at J.D. 1208 (3 plates) and 16.25m at J.D. 1210 (2 plates). [FIGURE 1] This star is clearly a fast nova. It cannot be a supernova because no galaxy is seen near the star. It is also not a long- period U Geminorum star of the UV Persei type as suggested by Romano because 1. the amplitude of variation is higher than 8 mag. (it is very doubtful that the star is faintly visible on the Palomar Sky Survey as Romano believes. I rather think this impression belongs to another object) 2. the decline of brightness after maximum is too fast 3. no further outbursts are observed. This object is probably a very bright nova in the halo of M 31. Similar objects - but not as bright - I observed on Tautenburg plates (see AN 294, 255, 1973 and Mitt. veranderl.Sterne 5, 177-195, 1971). In order to get a better light curve observers are requested to look at their plates and to place their observations at my disposal. On Sonneberg Schmidt plates taken by Gotz I measured a sequence of comparison stars (see Figure 2). The magnitudes are in the system of Arp (AJ 61. 15, 1956). [FIGURE 2] B V a 12.5m 12.2m b 13.0 13.2 c 14.1 14.6 d 15.7 15.5 e 15.9 15.6 f 16.7 16.4: g 17.7: - L. MEINUNGER Central Institute for Astrophysics of Academy of Sciences of GDR, Observatory Sonneberg, GDR