Circular No. 6298

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 B1 (SZCZEPANSKI)

Further precise CCD positions have been reported as follows:

1996 UT α_{2000} δ_{2000} m_{1} Observer
Jan. 29.66427 14^{h}00^{m}37.^{s}63 +53^{o}28′27′′.7 11.5 Ikari
29.71872 14 00 25.92 +53 27 51.5 11.8  _{”}
29.96803 13 59 33.33 +53 24 47.9  Pettarin
30.02539 13 59 21.07 +53 24 08.2  _{”}
30.21501 13 58 39.55 +53 21 52.5  Pravec
30.22516 13 58 37.29 +53 21 44.9  _{”}
30.51954 13 57 34.76 +53 17 57.0  Kojima
30.52568 13 57 33.42 +53 17 53.9  _{”}

Y. Ikari (Ohtsu). 0.25-m f/6.3 reflector. Communicated by S. Nakano. E. Pettarin, L. Drigo, G. Lombardi, F. Piani and A. Toso (Farra d’Isonzo).

0.4-m f/4.5 reflector. Measurers E. Pettarin and A. Toso. P. Pravec (Ondřejov). 0.65-m f/3.6 reflector. T. Kojima (Chiyoda). 0.25-m f/6.0 reflector. Communicated by S. Nakano.

Parabolic orbital elements from 20 observations Jan. 29-30:

T = 1996 Feb. 5.227 TT  ω = 149.^{o}523
Ω = 345.921 }2000.0
q = 1.45851 AU  i = 51.803
1996TT α_{2000}  δ_{2000}  Δ  r  ϵ  β  m_{1}
Jan. 30 13^{h}59.^{m}43 +53^{o}24.^{′}5 0.778 1.461 111.^{o}4 38.^{o}9 8.6
Feb. 1 13 52.00 +52 58.7 0.756 1.460 113.3 38.3 8.5
3 13 43.89 +52 29.3 0.734 1.459 115.4 37.6 8.5
5 13 35.08 +51 55.4 0.712 1.459 117.5 36.8 8.4
7 13 25.59 +51 16.1 0.691 1.459 119.9 35.9 8.3
9 13 15.45 +50 30.3 0.670 1.459 122.3 34.8 8.3
11 13 04.68 +49 37.1 0.651 1.461 125.0 33.6 8.2
13 12 53.35 +48 35.4 0.633 1.463 127.7 32.3 8.2
15 12 41.55 +47 24.0 0.616 1.465 130.7 30.7 8.1
17 12 29.38 +46 02.2 0.600 1.468 133.7 29.1 8.1
19 12 16.97 +44 29.0 0.586 1.472 136.9 27.3 8.0
21 12 04.45 +42 44.1 0.573 1.476 140.2 25.4 8.0
23 11 51.97 +40 47.4 0.563 1.480 143.5 23.4 8.0
25 11 39.67 +38 39.2 0.555 1.485 146.9 21.4 7.9
27 11 27.68 +36 20.5 0.549 1.491 150.1 19.3 7.9
1996 January 30  \begin{matrix}c \\ ◯ \end{matrix} Copyright 1996 CBAT  Brian G. Marsden