Circular No. 6342

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 E1

The following precise CCD positions have been reported:

1996 UT α_{2000} δ_{2000} m_{1} Observer
Mar. 16.24762 8^{h}58^{m}28.^{s}73 +19^{o}36′06′′.8 16.7 Helin
16.42703 8 57 58.77 +19 42 49.3 16.4  _{”}
16.90646 8 56 39.87 +20 00 38.6  Sarounova
16.91661 8 56 38.17 +20 01 02.2  _{”}
17.21302 8 55 49.68 +20 12 01.8  Rogers
17.23194 8 55 46.56 +20 12 45.0  _{”}
17.24559 8 55 44.51 +20 13 16.1 16.6 Helin
17.28625 8 55 37.77 +20 14 46.9 16.6  _{”}
17.43263 8 55 13.91 +20 20 08.6  Kobayashi
17.49985 8 55 02.65 +20 22 44.4  Garradd
17.50403 8 55 01.96 +20 22 54.1  _{”}
17.50610 8 55 01.67 +20 22 51.4  Kobayashi
17.52126 8 54 59.22 +20 23 24.6  Kojima
17.53558 8 54 56.93 +20 23 55.6  _{”}
17.90536 8 53 56.41 +20 37 30.8 16.3 Ticha
17.91819 8 53 54.31 +20 37 58.9  _{”}

E. F. Helin, S. Pravdo and K. J. Lawrence (Haleakala-NEAT/GEODSS). L. Sarounova and P. Pravec (Ondrejov). 0.65-m f/3.6 reflector. J. E. Rogers (Camarillo). 0.25-m Schmidt-Cassegrain. T. Kobayashi (Oizumi). 0.25-m f/4.4 reflector. G. J. Garradd (Loomberah). 0.25-m reflector. T. Kojima (Chiyoda). 0.25-m f/3.4 Wright-Schmidt. J. Ticha and M. Tichy (Klet). 0.57-m f/5.2 reflector.

Parabolic orbital elements from 22 observations Mar. 15-17:

T = 1996 July 27.230 TT  ω = 83.^{o}456
Ω = 149.893 }2000.0
q = 1.30663 AU  i = 113.526
1996 TT α_{2000}  δ_{2000}  Δ  r  ϵ  β  m_{1}
Mar. 18 8^{h}53.^{m}69 +20^{o}41.^{′}0 1.476 2.269 132.^{o}3 18.^{o}9 16.4
23 8 40.50 +23 36.9 1.504 2.216 123.5 22.0 16.3
28 8 28.23 +26 17.4 1.543 2.164 115.1 24.7 16.3
Apr. 2 8 17.05 +28 42.0 1.589 2.112 107.2 26.9 16.3
7 8 07.06 +30 51.3 1.641 2.061  99.7 28.6 16.2
1996 March 17  \begin{matrix}c \\ ◯ \end{matrix} Copyright 1996 CBAT  Brian G. Marsden