COMMISSION 27 OF THE I. A. U.
         INFORMATION BULLETIN ON VARIABLE STARS
                     Number 1661

                                     Konkoly Observatory
                                     Budapest
                                     1979 August 27



      ANOTHER OUTBURST OF THE UG? STAR V1454 CYGNI




    V1454 Cygni is listed in the Third Supplement to the General
Catalog of Variable Stars (Kukarkin et al., 1976) as a suspected
U Gem type star. Two outbursts had been seen: J.D. 2437869 at
photographic magnitude 13.9 and J.D. 2440116 at magnitude 14.8
(Pinto and Romano, 1972). Plates in the Nantucket collection from
J.D. 2439760 to J.D. 2444044 were searched for outbursts.
    The second of the known outbursts was visible at magnitudes
14.3 to 15.1 on four plates taken over a period of six days. In
addition a later outburst was noted on a plate taken J.D.2441091
at magnitude 15.1. On another plate taken four days later the star
was marginally visible close to the plate limit, however the reality 
of this image is somewhat doubtful.
    In total the collection has usable plates of the region
taken on 203 different nights. Five of these plates definitely
show V1454 Cyg in outburst. These plates all have a limiting magnitude 
of 15.0 or fainter.
    I feel confident that on these 203 nights I would not have
missed an outburst. Therefore V1454 Cyg was seen in outburst about
2.5% of the observed time. If each outburst lasts six days, an
outburst can be expected about once in 240 days according to these
rough statistics.
   The time intervals between observed outbursts were 2247 days
and 975 days. Gaps of six days or more are common in the plate
collection. Outbursts during these time intervals could easily
have been missed, so these intervals give no additional information 
about the average interval between outbursts.

    This work, funded by a National Science Foundation grant,
number AST-7807405-A01, was done at the Maria Mitchell Observatory 
under the direction of Dr. Emilia P. Belserene.



                          ALLEN R. LOSER
                          Maria Mitchell Observatory
                          Nantucket, Mass. 02554



References:

Kukarkin et al., 1976, Third Supplement to the Third Edition
      of the General Catalog of Variable Stars, Moscow [BIBCODE 1976tstt.book.....K ]
Pinto, G., and Romano, G., 1972, Padova Publ. 162