Circular No. 6460

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 Q1 (TABUR)

The following precise CCD positions have been reported:

1996 UT α_{2000} δ_{2000} m_{1} Observer
Aug. 22.78288 4^{h}49^{m}26.^{s}02 −8^{o}20′44′′.9 13.3 Ikari
22.79688 4 49 27.35 −8 20 26.6 13.3  _{”}
23.08900 4 49 55.86 −8 14 08.1  Tichý
23.09336 4 49 56.25 −8 14 02.5  _{”}

Y. Ikari (Moriyama). 0.25-m f/6.3 reflector. Communicated by S. Nakano. M. Tichý and Z. Moravec (Kleť). 0.57-m f/5.2 reflector. Measurer Tichý.

The parabolic orbital elements below are from 15 observations Aug. 21–23. The ephemeris uncertainty is at least 2^{o} by the end of September.

T = 1996 Nov. 1.076 TT  ω = 61.^{o}299
Ω = 27.864 }2000.0
q = 0.78087 AU  i = 77.469
1996 TT α_{2000}  δ_{2000}  Δ  r  ϵ  β  m_{1}
Aug. 15 4^{h}37.^{m}49 −10^{o}48.^{′}5 1.444 1.595 78.^{o}8 38.^{o}5 10.8
20 4 45.01 − 9 17.9 1.318 1.527 80.7 40.9 10.4
25 4 53.10 − 7 30.8 1.191 1.458 82.5 43.4 10.0
30 5 02.02 − 5 20.6 1.063 1.389 84.1 46.3  9.6
Sept. 4 5 12.23 − 2 37.1 0.936 1.321 85.5 49.5  9.1
9 5 24.44 + 0 55.7 0.811 1.254 86.5 53.3  8.5
14 5 39.93 + 5 43.1 0.689 1.188 86.9 57.7  7.9
19 6 01.14 +12 25.4 0.575 1.124 86.2 63.1  7.3
24 6 33.02 +21 57.3 0.476 1.061 83.6 69.9  6.6
29 7 26.27 +34 45.2 0.406 1.002 78.4 78.2  6.1
Oct. 4 9 00.10 +47 53.9 0.381 0.948 71.0 86.6  5.7
9 11 13.23 +53 41.3 0.412 0.898 64.0 91.7  5.6
14 13 02.51 +50 43.5 0.487 0.855 59.0 91.8  5.8
19 14 05.08 +45 04.8 0.589 0.821 55.5 88.3  6.0
24 14 40.09 +39 46.3 0.704 0.797 52.6 82.8  6.2
29 15 01.19 +35 15.7 0.824 0.783 50.0 76.3  6.5
Nov. 3 15 14.91 +31 25.3 0.944 0.782 47.5 69.4  6.8
8 15 24.47 +28 04.7 1.060 0.792 45.3 62.7  7.1
13 15 31.54 +25 06.5 1.170 0.814 43.3 56.5  7.4

1996 August 23  \begin{matrix}c \\ ◯ \end{matrix} Copyright 1996 CBAT  Brian G. Marsden