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IAUC 5484: 1984 WE1; EY Cyg

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                                                  Circular No. 5484
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 or GREEN@CFA.BITNET    MARSDEN or GREEN@CFAPS2.SPAN


1984 WE1
     This apparently asteroidal object with a very cometlike orbit has
been recovered by C. S. Shoemaker, E. M. Shoemaker and D. H. Levy with
the 0.46-m Schmidt telescope at Palomar as follows:

     1991 UT             R.A. (2000) Decl.       Mag.
     Nov. 13.41649    5 16 48.52   +30 14 00.2   16.7
          13.44513    5 16 47.59   +30 14 25.8
     Dec.  1.37135    5 02 18.00   +34 52 34.9   16
           1.40503    5 02 15.63   +34 53 06.6
           3.35938    5 00 02.71   +35 23 02.9
           3.39236    5 00 00.24   +35 23 31.8

     A prediction from the orbital elements on MPC 9959 required
correction by +10 days.  The following improved orbital elements, by the
undersigned, are from 12 observations 1984-1991:

                    Epoch = 1992 June 27.0 TT
     T = 1992 Mar. 13.1272 TT         Peri. =  65.5516
     e = 0.501570                     Node  =  55.6797  2000.0
     q = 1.823510 AU                  Incl. =  19.8077
       a =  3.658508 AU    n = 0.1408471    P =   6.998 years

1992 TT     R. A. (2000) Decl.     Delta      r    Elong. Phase      V
Mar. 29     6 15.54    +44 47.6    1.628    1.829   84.7   32.9     16.8
Apr.  8     6 44.14    +43 57.6    1.714    1.838   80.6   32.5     16.9
     18     7 13.34    +42 45.5    1.802    1.852   76.8   31.9     17.0
     28     7 42.47    +41 11.7    1.893    1.869   73.2   31.0     17.1
May   8     8 11.04    +39 17.7    1.987    1.891   69.7   30.0     17.2
     18     8 38.68    +37 06.2    2.085    1.916   66.3   28.9     17.3
     28     9 05.17    +34 40.2    2.186    1.945   62.9   27.6     17.4
June  7     9 30.44    +32 02.7    2.290    1.977   59.4   26.2     17.5


EY CYGNI
     Recent visual magnitude estimates, in part submitted by the AAVSO,
indicate that this dwarf nova (cf. IAUC 4249, 4252, 4258) is in
outburst: Mar. 19.17 UT, [13.2 (P. Schmeer, Bischmisheim, Germany);
28.15, 11.0 (Schmeer); 29.02, 11.6 (O. Midtskogen, Tranby, Norway);
29.40, 11.5 (J. Griese, Stamford, CT).


1992 March 30                  (5484)              Brian G. Marsden

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