Circular No. 6430

Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION

Postal Address: Central Bureau for Astronomical Telegrams Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A. IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)

BMARSDEN@CFA.HARVARD.EDU or DGREEN@CFA.HARVARD.EDU (science) Phone 617-495-7244/7440/7444 (for emergency use only)

COMET C/1996 N1 (BREWINGTON)

Further precise CCD positions have been reported as follows:

1996 UT α_{2000} δ_{2000} m_{1} Observer
July 5.12750 11^{h}36^{m}14.^{s}93 +4^{o}58′14′′.9 14.7 Offutt
5.13558 11 36 16.35 +4 58 43.4 14.5  _{”}
5.23780 11 36 34.07 +5 04 37.4  Balam
5.23886 11 36 34.19 +5 04 41.5  _{”}
6.07688 11 39 00.11 +5 53 42.7  di Cicco
6.08041 11 39 00.65 +5 53 54.2  _{”}
6.24307 11 39 29.05 +6 03 21.8  Balam
6.24466 11 39 29.33 +6 03 27.8  _{”}

W. Offutt (Cloudcroft). 0.60-m f/7 Ritchey-Chrétien. D. D. Balam (Victoria). 1.82-m Plaskett telescope. D. di Cicco (Sudbury). 0.41-m Schmidt-Cassegrain.

Parabolic orbital elements from 23 observations July 4–6:

T = 1996 Aug. 3.418 TT  ω = 44.^{o}120
Ω = 235.119 }2000.0
q = 0.92309 AU  i = 51.672
1996 TT α_{2000}  δ_{2000}  Δ  r  ϵ  β  m_{1}
July 6 11^{h}38.^{m}78 + 5^{o}49.^{′}3 0.828 1.051 68.^{o}6 64.^{o}2 10.3
8 11 44.62 + 7 45.7 0.829 1.035 67.3 65.0 10.2
10 11 50.51 + 9 41.4 0.831 1.020 66.1 65.7 10.2
12 11 56.45 +11 36.2 0.833 1.005 65.0 66.4 10.1
14 12 02.42 +13 29.9 0.835 0.992 63.9 67.0 10.1
16 12 08.43 +15 22.4 0.838 0.980 62.9 67.5 10.0
18 12 14.47 +17 13.6 0.842 0.968 62.0 67.9 10.0
20 12 20.53 +19 03.2 0.846 0.958 61.1 68.2 10.0
22 12 26.61 +20 51.3 0.850 0.949 60.4 68.5  9.9
24 12 32.71 +22 37.6 0.855 0.942 59.7 68.7  9.9
26 12 38.83 +24 22.1 0.859 0.935 59.1 68.8  9.9
28 12 44.97 +26 04.7 0.864 0.930 58.7 68.8  9.9
30 12 51.12 +27 45.3 0.870 0.926 58.3 68.8  9.9
Aug. 1 12 57.29 +29 23.8 0.875 0.924 58.0 68.6  9.9
3 13 03.49 +31 00.1 0.880 0.923 57.8 68.4  9.9
5 13 09.72 +32 34.2 0.886 0.924 57.7 68.2  9.9

1996 July 6  \begin{matrix}c \\ ◯ \end{matrix} Copyright 1996 CBAT  Brian G. Marsden