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IAUC 5778: VY Aqr; 1993 HO1

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                                                  Circular No. 5778
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM     EASYLINK 62794505
MARSDEN@CFA or GREEN@CFA (.SPAN, .BITNET or .HARVARD.EDU)


VY AQUARII
     J. A. Mattei, AAVSO, reports that this cataclysmic variable is
having its first known outburst since 1990 June 30 (IAUC 5046),
when it reached mv = 10.5.  Visual magnitude estimates:  Apr. 24.59
UT, [13.5 (W. Albrecht, Pahala, HI); 24.70, [13.0 (A. F. Jones,
Nelson, New Zealand); 25.57, 10.0 (Albrecht); 28.73, 10.3 (Jones);
29.68, 10.3 (Jones).


1993 HO1
     R. H. McNaught, Siding Spring Observatory, reports his discovery,
on a U.K. Schmidt Telescope plate taken by K. S. Russell, of
an asteroidal object with unusual motion.  Follow-up observations
were made on Apr. 26 by McNaught with the Uppsala Southern Schmidt
and on Apr. 29 by C. P. Cass with the UKST.  The following
measurements are by McNaught:

     1993 UT             R.A. (2000) Decl.        V
     Apr. 20.67001   14 55 17.44   -20 34 17.6   17.5
          20.70473   14 55 13.93   -20 34 18.8
          26.65900   14 45 30.41   -20 32 59.2   17
          26.71528   14 45 24.67   -20 32 55.6
          29.72234   14 40 35.62   -20 29 39.0

     Orbital elements by G. V. Williams, Center for Astrophysics:

     T = 1992 Dec. 18.867 TT          Peri. = 104.965
     e = 0.41781                      Node  =  22.942   2000.0
     q = 1.15895 AU                   Incl. =   5.926
       a =  1.99068 AU     n = 0.350914     P =   2.81 years

1993 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase    V
Apr. 23    14 51.49   -20 34.7   0.655   1.649  165.8    8.6   17.3
     28    14 43.35   -20 31.8   0.674   1.677  171.8    4.9   17.2
May   3    14 35.54   -20 24.6   0.698   1.705  175.1    2.9   17.2
      8    14 28.38   -20 14.6   0.728   1.733  171.8    4.8   17.4
     13    14 22.08   -20 03.1   0.762   1.760  166.3    7.8   17.7
     18    14 16.78   -19 51.5   0.802   1.788  160.5   10.9   18.0
     23    14 12.59   -19 40.9   0.847   1.815  154.9   13.7   18.2
     28    14 09.54   -19 32.3   0.896   1.843  149.5   16.2   18.5
June  2    14 07.59   -19 26.4   0.950   1.870  144.3   18.4   18.7


1993 April 30                  (5778)            Daniel W. E. Green

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