COMMISSION 27 OF THE I. A. U.
         INFORMATION BULLETIN ON VARIABLE STARS
                     Number 2280
                                     Konkoly Observatory
                                     Budapest
                                     1983 February 21

                                     HU ISSN 0374-0676

               NOTE ON XZ Eri AND RU Hor

  XZ Eri and RU Hor are two dwarf novae variables, both of
UG sub-type (Vogt and Bateson, 1982). The minimum photographic
magnitudes quoted in the 'General Catalogue of Variable Stars'
(Kukarkin et al., 1969) are 16.5 and 16.3 respectively (both
magnitudes are preceded by the symbol '(' indicating the
posibility of fainter minimum).
  Recently a set of finding charts of southern and equatorial
dwarf novae has been published by Vogt and Bateson (1982).
  A program conducted to improve the positions of this kind
of variables was started by the author. During the development
of such program, neither XZ Eri nor RU Hor were seen on blue
plates (Kodak 103a-O, unfiltered) taken on November 16, 1982
with the 20 inch double astrograph of the Yale Southern
Station.
  The conclusion from this fact is that, at that time, the
magnitude of each star was, at least, 17.5 or fainter.



               CARLOS LOPEZ
               Obs. Felix Aguilar
               Benavides 8175 (o)
               Marquesado 5407
               San Juan-Argentina



References:
Kukarkin, B.V., Kholopov, P.N., Efremov, Yu.N., Kukarkina,
 N.P., Kurochkin, N.E., Medvedeva, G.I., Perova, N.B.,
 Fedorovich, V.P. and Frolov, M.S.: 1969, General Catalogue
 of Variable Stars, Moscow. [BIBCODE 1969gcvs.book.....K ]
Vogt, N. and Bateson, F.M.: 1982, Astron. Astrophys. Suppl.
 Ser. 48, 383. [BIBCODE 1982A&AS...48..383V ]