Circular No. 5986

Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION

Postal Address: Central Bureau for Astronomical Telegrams Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.

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MARSDEN@CFA or GREEN@CFA (.SPAN, .BITNET or .HARVARD.EDU)

COMET TAKAMIZAWA (1994i)

S. Nakano, Sumoto, Japan, reports the discovery by Kesao Takamizawa of a comet on T-Max photographs. Precise positions:

1994 UT α_{2000} δ_{2000} m_{1} Observer
May 6.68611 17^{h}07^{m}23.^{s}72 −4^{o}35′07′′.7 11.0 Takamizawa
7.73794 17 01 44.33 −4 49 16.8  _{”}
8.47065 16 57 40.10 −4 59 26.1  Rabinowitz
8.63984 16 56 43.26 −5 01 51.3  Kojima
8.65391 16 56 38.48 −5 02 03.1  _{”}
8.87212 16 55 24.51 −5 05 08.6 12.5 Tichá
8.87394 16 55 23.90 −5 05 10.2  _{”}

K. Takamizawa (Saku). 0.10-m f/4.0 patrol camera. Comet has strong

central condensation; coma diameter ∼ 1′. Measurer Y. Kushida. D. Rabinowitz (Kitt Peak). Spacewatch telescope. 2′–3′ coma; tail ∼ 0^{o}.2

long toward the east-northeast. T. Kojima (YGCO Chiyoda Observatory). 0.25-m f/6.0 reflector + CCD.

Coma diameter 3′; tail 10′ long in p.a. 45^{o}. J. Tichá, Z. Moravec, and M. Tichý (Kleť Obs.). 0.57-m reflector + CCD.

Preliminary parabolic orbital elements from the above observations:

T = 1994 July 8.644 TT  ω = 197.^{o}776
Ω = 51.237 }2000.0
q = 1.88618 AU  i = 135.572
1994TT α_{2000}  δ_{2000}  Δ  r  ϵ  β  m_{1}
May 8 17^{h}00.^{m}30 − 4^{o}52.^{′}8 1.109 2.036 148.^{o}0 15.^{o}2 9.8
10 16 48.86 − 5 21.3 1.078 2.027 152.3 13.4 9.7
12 16 36.68 − 5 51.1 1.051 2.018 156.6 11.5 9.7
14 16 23.80 − 6 22.1 1.028 2.010 160.8  9.5 9.6
16 16 10.29 − 6 53.9 1.009 2.001 164.5  7.8 9.5
18 15 56.26 − 7 26.0 0.994 1.993 167.2  6.4 9.5
20 15 41.83 − 7 57.9 0.984 1.985 168.0  6.1 9.4
22 15 27.15 − 8 29.1 0.979 1.978 166.5  6.9 9.4
24 15 12.38 − 8 59.1 0.979 1.970 163.2  8.6 9.4
26 14 57.69 − 9 27.5 0.984 1.963 159.0 10.7 9.4
28 14 43.24 − 9 53.9 0.993 1.957 154.4 13.0 9.4

1994 May 8 Daniel W. E. Green