Circular No. 6391

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 27080 include consideration of nongravitational parameters A_{1} = +1.97 ± 0.14, A_{2} = −0.22 ± 0.12:

Epoch = 1996 Apr. 27.0 TT

T = 1996 May 1.3965 TT  ω = 130.^{o}1996
e = 0.999635  Ω = 188.0438 }2000.0
q = 0.230103 AU  i = 124.9147
1996TT α_{2000} δ_{2000} Δ r ϵ β m_{1}
May 2 2^{h}25.^{m}85 +20^{o}51.^{′}3 1.206 0.231 6.^{o}2 27.^{o}9 −0.5
3 2 24.27 +19 08.9 1.221 0.237  5.4 23.6 −0.3
4 2 23.06 +17 25.0 1.231 0.248  5.6 23.3 −0.1
5 2 22.24 +15 41.2 1.238 0.263  6.6 26.1  0.2
6 2 21.78 +13 58.7 1.242 0.281  8.0 30.1  0.5
7 2 21.66 +12 18.4 1.244 0.302  9.7 34.4  0.8
8 2 21.84 +10 40.6 1.243 0.324 11.5 38.4  1.1
9 2 22.27 + 9 05.2 1.241 0.348 13.3 41.9  1.4
10 2 22.92 + 7 32.2 1.238 0.372 15.1 45.0  1.7
11 2 23.77 + 6 01.3 1.234 0.397 16.9 47.6  1.9
12 2 24.79 + 4 32.5 1.230 0.422 18.6 49.8  2.2
13 2 25.97 + 3 05.3 1.224 0.447 20.3 51.8  2.4
14 2 27.28 + 1 39.7 1.219 0.473 22.0 53.4  2.7
15 2 28.71 + 0 15.4 1.213 0.498 23.7 54.8  2.9
16 2 30.25 − 1 07.9 1.207 0.523 25.4 55.9  3.1
17 2 31.90 − 2 30.1 1.201 0.548 27.0 56.9  3.3
18 2 33.65 − 3 51.6 1.195 0.573 28.6 57.7  3.5
19 2 35.49 − 5 12.5 1.188 0.598 30.2 58.3  3.6
20 2 37.42 − 6 32.8 1.182 0.623 31.8 58.9  3.8
21 2 39.43 − 7 52.7 1.176 0.647 33.3 59.3  4.0
22 2 41.52 − 9 12.3 1.170 0.671 34.9 59.6  4.1
23 2 43.69 −10 31.6 1.164 0.695 36.4 59.8  4.3
24 2 45.94 −11 50.8 1.159 0.719 37.9 60.0  4.4
25 2 48.27 −13 09.8 1.153 0.742 39.4 60.0  4.5
26 2 50.67 −14 28.7 1.148 0.766 40.9 60.0  4.6
27 2 53.15 −15 47.6 1.143 0.789 42.4 60.0  4.8
28 2 55.70 −17 06.5 1.139 0.812 43.8 59.9  4.9
29 2 58.33 −18 25.3 1.134 0.835 45.3 59.7  5.0
30 3 01.03 −19 44.2 1.130 0.857 46.7 59.5  5.1
31 3 03.82 −21 03.1 1.127 0.880 48.2 59.2  5.2
June 1 3 06.68 −22 22.0 1.123 0.902 49.6 58.9  5.3
1996 May 2  \begin{matrix}c \\ ◯ \end{matrix} Copyright 1996 CBAT  Brian G. Marsden