Circular No. 5808

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)

COMET SHOEMAKER-LEVY (1993h) The following precise positions have been measured by B. A. Skiff and

C. S. Shoemaker from exposures by C. S. Shoemaker, E. M. Shoemaker and D. H. Levy with the 0.46-m Schmidt telescope at Palomar (the first α and the second δ are uncertain, and the third image was involved with a star):

1993 UT  α_{2000}  δ_{2000}
May 23.20885  13^{h}24^{m}50.^{s}49  −33^{o}58′19′′.7
23.24809  13 24 48.61  −33 58 22.2
24.20572  13 24 01.91  −33 59 22.2
24.23836  13 24 00.19  −33 59 23.0
26.20329  13 22 26.46  −34 01 18.4
26.25729  13 22 23.84  −34 01 21.2

Preliminary parabolic orbital elements by B. G. Marsden, Harvard-Smithsonian Center for Astrophysics:

T = 1993 May 14.144 TT  ω = 199.^{o}384
Ω = 31.929 }2000.0
q = 5.41446 AU  i = 72.368
1993 TT α_{2000}  δ_{2000}  Δ  r  ϵ  β  m_{1}
May 13 13^{h}33.^{m}84 −33^{o}44.^{′}4 4.503 5.414 151.^{o}8 5.^{o}1 16.6
23 13 25.01 −33 58.1 4.568 5.415 143.4  6.4 16.6
June 2 13 17.45 −34 06.8 4.660 5.416 134.2  7.7 16.7
12 13 11.38 −34 13.5 4.773 5.419 124.9  8.8 16.7
22 13 06.90 −34 20.7 4.904 5.422 115.7  9.7 16.8
July 2 13 04.04 −34 30.7 5.047 5.426 106.6 10.3 16.9
12 13 02.71 −34 45.2 5.198 5.432  97.9 10.7 16.9
22 13 02.83 −35 05.4 5.352 5.438  89.5 10.8 17.0
Aug. 1 13 04.25 −35 32.1 5.504 5.446  81.4 10.6 17.1

NOVA AQUILAE 1993 Visual magnitude estimates: May 21.04 UT, 8.0 (T. Vanmunster, Lan-

den, Belgium); 21.97, 7.8 (H. Dahle, Oslo, Norway); 23.96, 7.5 (S. Baroni, Milan, Italy); 25.97, 7.9 (B. H. Granslo, Fjellhamar, Norway); 26.95, 8.0 (Dahle); 28.96, 8.3 (J. D. Shanklin, Cambridge, England).

1993 May 31 Daniel W. E. Green