COMMISSION 27 OF THE I. A. U.
        INFORMATION BULLETIN ON VARIABLE STARS
                    Number 2898



                                     Konkoly Observatory
                                     Budapest
                                     29 May 1986

                                     HU ISSN 0374-0676


                     CD -30deg5135


   Further photographic UBV photometry has been obtained for this
peculiar, variable emission-line F supergiant from plates taken with
the Uppsala Southern Station Schmidt telescope at Siding Spring 
Observatory, Australia. The results are, with estimated probable errors
+- 0.1 mag.:


Date            V         B        U     Observer
20 Jan. 1985    9.5     10.2     10.9   B. Pettersson
21 Jan. 1985    9.6     10.3     10.8        "
14 Feb. 1985    9.2     10.1     10.6        "
10 Mar. 1986  9.3-9.7   10.3     11.0:  P. Magnusson


   From 14 Feb. 1985 there are two sets of plates taken two hours
apart; the small differences are possibly not significant, as they
are only slightly larger than the estimated errors. On 10 March 1986
four sets of plates were taken in direct succession (30-45 min between
plates of the same colour). The star was then fainter in V at the 
beginning and end of the observations, and brighter in between, whereas
there seems to have been a small increase in the brightness in U at
the end; B remained constant to within the presumed errors. This
supports the suggestion of rapid variations put forward by Welin (1981).


                           GUNNAR WELIN

                           GREGER WESTLING

                           Astronomical Observatory
                           Uppsala, Sweden

Reference:
Welin, G. 1981, Inf. Bull. Var. Stars No. 1940