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IAUC 5998: N Sgr 1994 No. 2; 1994k

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                                                  Circular No. 5998
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)


NOVA SAGITTARII 1994 No. 2
     Y. Kushida, Yatsugatake South Base Observatory, provides (via
T. Kato, Kyoto University) the following precise position from an
unfiltered T-Max 400 film taken on May 22.59 UT: R.A. = 18h30m22s.95,
Decl. = -17o11'55".6 (equinox J2000.0); the corresponding 1950.0
position is R.A. = 18h27m28s.62, Decl. = -17o14'01".8.
     Negative pre-discovery T-Max 400 photographic magnitude
estimates: May 15.651 UT, [11.0 (M. Yamamoto, Okazaki, Aichi, Japan);
16.741, [14.0 (M. Wakuda, Shizuoka, Japan; with PO0 filter); 18.635,
[11.0 (Yamamoto); 20.729, [10.0 (Yamamoto).  Visual magnitude
estimates:  May 22.59, 11.6 (Kushida); 22.688, 11.6 (S. Kiyota,
Tsukuba, Japan; CCD + V filter); 24.681, 10.7 (Kiyota); 31.008,
10.4 (T. Vanmunster, Landen, Belgium); June 1.085, 10.3 (P.
Schmeer, Bischmisheim, Germany).


PERIODIC COMET SHOEMAKER 4 (1994k)
     Additional precise positions:

     1994 UT             R.A. (2000) Decl.        m1    Observer
     May  23.98270   17 16 41.83   -10 26 42.7          Pravec
          23.98777   17 16 41.55   -10 26 43.3   17.5     "
          28.21800   17 13 57.48   -10 49 00.0   18.1   di Cicco
          28.23346   17 13 56.86   -10 49 04.9   18.1     "
     June  1.15153   17 11 14.75   -11 11 28.8   17.8     "
           1.17936   17 11 13.45   -11 11 39.0   17.8     "

P. Pravec (Ondrejov).  0.65-m f/3.6 reflector + CCD.
D. di Cicco (Sudbury).  0.28-m Schmidt-Cassegrain + CCD.

     The observations confirm that this comet is of short period,
the following orbital elements by B. G. Marsden, Center for
Astrophysics, being computed from 16 observations, May 14-June 1:

     T = 1994 Oct. 31.231 TT          Peri. = 196.521
     e = 0.52851                      Node  =  92.603   2000.0
     q = 2.92503 AU                   Incl. =  25.345
       a =  6.20375 AU     n = 0.063786     P =  15.45 years


1994 June 1                    (5998)            Daniel W. E. Green

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