Circular No. 6303

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 B2 (HYAKUTAKE)

Further precise CCD positions have been reported as follows:

1996 UT α_{2000} δ_{2000} m_{1} Observer
Feb. 1.69999 14^{h}32^{m}49.^{s}33 −24^{o}56′13′′.6  Garradd
1.70887 14 32 49.77 −24 56 13.6  _{”}
1.71928 14 32 50.33 −24 56 18.2 11.3 Ikari
1.72758 14 32 50.80 −24 56 18.2 11.4  _{”}
2.10476 14 33 08.70 −24 56 23.6  Tichý
2.10781 14 33 08.89 −24 56 23.9  _{”}
2.20916 14 33 13.55 −24 56 24.6  Šarounová
2.22522 14 33 14.29 −24 56 24.5  _{”}
2.68943 14 33 36.52 −24 56 27.0  Kojima
2.71078 14 33 37.63 −24 56 28.1  _{”}
2.72826 14 33 38.28 −24 56 22.9  Garradd
2.72956 14 33 38.34 −24 56 22.8  _{”}
2.73933 14 33 38.89 −24 56 27.0  Kobayashi
2.74429 14 33 39.13 −24 56 27.2  _{”}
2.75343 14 33 39.56 −24 56 27.0 11.1 Ikari
2.77142 14 33 40.39 −24 56 27.2 11.1  _{”}
3.72161 14 34 25.19 −24 56 24.8  Asami
3.72933 14 34 25.62 −24 56 19.5  Garradd
3.73095 14 34 25.70 −24 56 19.6  _{”}
3.73571 14 34 25.84 −24 56 24.8  Asami
3.77569 14 34 27.66 −24 56 25.2  Kojima
3.78652 14 34 28.18 −24 56 24.6  _{”}

G. Garradd (Loomberah). 0.25-m f/4.1 reflector. Y. Ikari (Ohtsu). 0.25-m f/6.3 reflector. Communicated by S. Nakano. M. Tichý (Kleť). 0.57-m f/5.2 reflector. Communicated by J. Tichá. L. Šarounová (Ondřejov). 0.65-m f/3.6 reflector. T. Kojima (Chiyoda). 0.25-m Wright-Schmidt. Communicated by Nakano. T. Kobayashi (Oizumi). 0.25-m f/4.4 reflector. Communicated by Nakano. A. Asami (Hadano). 0.20-m f/4.0 reflector. Communicated by Nakano.

Parabolic orbital elements from 33 observations Jan. 31–Feb. 3:

T = 1996 May 2.769 TT  ω = 131.^{o}202
Ω = 188.943 }2000.0
q = 0.22432 AU  i = 122.639
1996 February 3  \begin{matrix}c \\ ◯ \end{matrix} Copyright 1996 CBAT  Brian G. Marsden