Circular No. 6412

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)

The following ephemeris continuation (cf. IAUC 6391) is from the orbital elements on MPC 27287, which include the nongravitational terms A_{1} = +2.76 ± 0.04, A_{2} = +0.07 ± 0.04:

1996 TT α_{2000} δ_{2000} Δ r ϵ β m_{1}
June 1 3^{h}06.^{m}56 −22^{o}20.^{′}7 1.124 0.902 49.^{o}6 58.^{o}9  5.3
6 3 22.09 −28 54.4 1.113 1.010 56.5 56.9  5.8
11 3 39.90 −35 23.9 1.113 1.115 63.0 54.2  6.2
16 4 00.38 −41 42.0 1.126 1.216 68.9 51.3  6.6
21 4 24.02 −47 39.7 1.151 1.313 74.3 48.2  7.0
26 4 51.39 −53 07.5 1.190 1.408 78.9 45.1  7.4
July 1 5 23.08 −57 56.4 1.241 1.501 82.7 42.2  7.7
6 5 59.49 −61 59.6 1.305 1.591 85.6 39.6  8.1
11 6 40.54 −65 12.6 1.379 1.679 87.7 37.2  8.4
16 7 25.28 −67 34.1 1.462 1.766 89.0 35.1  8.8
21 8 11.83 −69 06.8 1.554 1.850 89.6 33.3  9.1
26 8 57.75 −69 56.9 1.652 1.933 89.6 31.7  9.5
31 9 40.8 −70 13.4 1.757 2.014 89.1 30.3  9.8
Aug. 5 10 19.8 −70 06.1 1.866 2.094 88.1 29.0 10.1
10 10 54.18 −69 43.4 1.979 2.173 86.8 27.8 10.4
15 11 24.29 −69 12.1 2.095 2.250 85.3 26.7 10.6
20 11 50.67 −68 37.0 2.213 2.326 83.5 25.6 10.9
25 12 13.93 −68 01.2 2.333 2.402 81.5 24.6 11.1

COMET C/1995 Y1 (HYAKUTAKE)

Ephemeris extension from orbital elements on MPC 27080:

1996 TT α_{2000} δ_{2000} Δ r ϵ β m_{1}
May 27 23^{h}47.^{m}03 +36^{o}34.^{′}4 2.087 1.803 59.^{o}7 29.^{o}0 13.7
June 6 23 59.37 +37 24.0 2.123 1.920  64.6 28.5 14.3
16 0 08.69 +38 02.6 2.143 2.038  70.3 28.0 14.8
26 0 14.91 +38 29.1 2.149 2.157  76.8 27.3 15.3
July 6 0 17.98 +38 41.4 2.143 2.275  84.0 26.4 15.8
16 0 17.84 +38 36.6 2.130 2.393  92.1 25.1 16.2
26 0 14.53 +38 10.2 2.113 2.510 100.8 23.4 16.6
Aug. 5 0 08.31 +37 17.6 2.098 2.627 110.2 21.2 17.0

1996 May 31  \begin{matrix}c \\ ◯ \end{matrix} Copyright 1996 CBAT  Daniel W. E. Green