Circular No. 6359

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)

Improved orbital elements from MPC 26879 refine the comet’s “original” and “future” barycentric P to ∼ 8000 and 14 000 years, respectively:

Epoch = 1996 Apr. 27.0 TT

T = 1996 May 1.3965 TT  ω = 130.^{o}2102
e = 0.999662  Ω = 188.0430 }2000.0
q = 0.230035 AU  i = 124.9098
1996TT α_{2000} δ_{2000} Δ r ϵ β m_{1}
Apr. 2 3^{h}11.^{m}31 +51^{o}56.^{′}0 0.273 0.875 55.^{o}7 109.^{o}4  2.1
3 3 09.67 +49 35.0 0.304 0.853 53.1 110.3  2.2
4 3 08.33 +47 38.9 0.335 0.830 50.8 110.9  2.3
5 3 07.19 +46 01.4 0.367 0.807 48.8 111.3  2.4
6 3 06.16 +44 38.1 0.398 0.784 46.9 111.4  2.4
7 3 05.20 +43 25.7 0.430 0.761 45.1 111.3  2.5
8 3 04.28 +42 21.9 0.462 0.738 43.4 111.1  2.5
9 3 03.37 +41 24.8 0.494 0.714 41.9 110.7  2.5
10 3 02.46 +40 33.0 0.526 0.690 40.3 110.1  2.5
11 3 01.53 +39 45.5 0.558 0.666 38.8 109.5  2.5
12 3 00.57 +39 01.2 0.591 0.642 37.4 108.7  2.4
13 2 59.57 +38 19.4 0.623 0.618 35.9 107.8  2.4
14 2 58.52 +37 39.6 0.656 0.593 34.5 106.7  2.3
15 2 57.41 +37 01.0 0.689 0.568 33.1 105.5  2.2
16 2 56.24 +36 23.3 0.721 0.543 31.7 104.1  2.1
17 2 54.99 +35 46.0 0.754 0.518 30.3 102.6  2.0
18 2 53.67 +35 08.5 0.787 0.493 28.8 100.8  1.9
19 2 52.25 +34 30.4 0.820 0.468 27.4  98.8  1.8
20 2 50.74 +33 51.3 0.853 0.442 25.9  96.5  1.6
21 2 49.12 +33 10.7 0.886 0.417 24.5  93.9  1.4
22 2 47.40 +32 27.9 0.920 0.392 23.0  90.9  1.3
23 2 45.55 +31 42.4 0.953 0.367 21.4  87.4  1.0
24 2 43.59 +30 53.4 0.986 0.343 19.8  83.4  0.8
25 2 41.50 +30 00.3 1.018 0.320 18.2  78.8  0.6
26 2 39.30 +29 02.1 1.050 0.298 16.5  73.3  0.3
27 2 37.00 +27 57.9 1.082 0.277 14.7  67.1  0.1
28 2 34.64 +26 47.0 1.112 0.260 12.9  59.9 −0.1
29 2 32.25 +25 28.6 1.140 0.245 11.1  51.9 −0.3
30 2 29.93 +24 02.7 1.166 0.235  9.2  43.4 −0.4
May 1 2 27.76 +22 29.7 1.188 0.230  7.5  35.0 −0.5
2 2 25.85 +20 51.1 1.206 0.231  6.2  27.9 −0.5
1996 March 28  \begin{matrix}c \\ ◯ \end{matrix} Copyright 1996 CBAT  Brian G. Marsden