Circular No. 6218

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/1995 Q2 (HARTLEY-DRINKWATER) The following precise positions (all CCD) have been reported:

1995 UT α_{2000} δ_{2000} m_{1} Observer
Aug. 30.86522 22^{h}08^{m}11.^{s}84 −25^{o}10′05′′.1  Ghezzi
30.87153 22 08 08.46 −25 10 16.9  _{”}
31.00983 22 06 54.83 −25 14 10.8  Cartwright
31.02112 22 06 48.78 −25 14 30.5  _{”}
31.03020 22 06 43.95 −25 14 45.6  _{”}
31.14036 22 05 45.79 −25 17 49.4 16.2 di Cicco
31.14729 22 05 42.03 −25 18 00.3 16.0  _{”}
31.15424 22 05 38.33 −25 18 11.6 16.3  _{”}
31.16118 22 05 34.65 −25 18 23.7 16.1  _{”}
31.21146 22 05 08.42 −25 19 45.9 15.9 Rogers
31.22778 22 04 59.67 −25 20 12.9  _{”}
31.24167 22 04 52.27 −25 20 35.8  _{”}
31.26319 22 04 40.78 −25 21 11.0  _{”}
31.29447 22 04 24.04 −25 22 02.1  Balam
31.29840 22 04 22.08 −25 22 08.9  _{”}
31.30031 22 04 21.06 −25 22 12.5  _{”}
31.58715 22 01 49.42 −25 29 53.7  Nakamura
31.59219 22 01 46.84 −25 30 02.0  _{”}
31.61753 22 01 33.35 −25 30 41.8  _{”}
31.62135 22 01 31.37 −25 30 47.8  _{”}
31.90769 21 59 00.91 −25 38 14.4  Sicoli
31.91237 21 58 58.50 −25 38 21.2  _{”}
Sept. 1.21319 21 56 20.87 −25 45 54.9  Rogers
1.24444 21 56 04.51 −25 46 40.4  _{”}

P. Ghezzi, P. Sicoli and F. Manca (Sormano). 0.5-m reflector. M. Cartwright and A. Fitzsimmons (La Palma). 1-m Kapteyn telescope.

R = 13.5 within 6′′-radius aperture. Coma elongated in p.a. 60^{o}. D. di Cicco (Sudbury). 0.41-m reflector. J. E. Rogers (Camarillo). 0.25-m Schmidt-Cassegrain. D. D. Balam (Climenhaga Observatory). 0.5-m reflector. A. Nakamura (Kuma Kogen). 0.6-m reflector. Communicated by S. Nakano.

Parabolic orbital elements from 39 observations Aug. 29-Sept. 1:

T = 1995 July 31.966 TT  ω = 312.^{o}640
Ω = 300.445 }2000.0
q = 1.88628 AU  i = 168.093

1995 September 1 Brian G. Marsden