Circular No. 6208

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 Q1 (BRADFIELD)

The following precise positions have been reported:

1995 UT α_{2000} δ_{2000} Observer
Aug. 18.35949 11^{h}03^{m}18.^{s}04 −13^{o}05′09′′.7 Garradd
18.36288 11 03 18.50 −13 04 56.8  _{”}
18.37438 11 03 20.41 −13 04 13.6  _{”}
18.37569 11 03 20.42 −13 04 08.4  _{”}
19.35893 11 05 42.40 −12 03 14.4  _{”}
19.36198 11 05 42.83 −12 03 02.7  _{”}
19.36469 11 05 43.22 −12 02 51.8  _{”}
19.98119 11 07 03.8 −11 25 23 Smette
20.36305 11 07 50.74 −11 02 27.2 Garradd
20.36522 11 07 51.02 −11 02 20.0  _{”}
20.36611 11 07 51.13 −11 02 16.7  _{”}

G. J. Garradd (Loomberah, N.S.W.) 0.25-m reflector + CCD. A. Smette (European Southern Observatory). New Technology Telescope.

Parabolic orbital elements from observations Aug. 18–20:

T = 1995 Aug. 31.356 TT  ω = 331.^{o}068
Ω = 178.165 }2000.0
q = 0.43873 AU  i = 147.283
1995 TT α_{2000}  δ_{2000}  Δ  r  ϵ  β  m_{1}
Aug. 16 10^{h}56.^{m}39 −15^{o}38.^{′}5 0.898 0.586 35.^{o}0 83.^{o}2 5.4
17 10 59.55 −14 32.2 0.929 0.570 33.8 81.1 5.4
18 11 02.37 −13 27.9 0.961 0.555 32.5 78.9 5.4
19 11 04.88 −12 25.4 0.992 0.540 31.2 76.4 5.3
20 11 07.11 −11 24.4 1.024 0.526 29.9 73.8 5.3
21 11 09.07 −10 24.6 1.055 0.513 28.6 71.0 5.2
22 11 10.79 − 9 26.0 1.086 0.500 27.3 68.1 5.2
23 11 12.28 − 8 28.2 1.116 0.489 26.0 64.9 5.1
24 11 13.56 − 7 31.1 1.147 0.478 24.6 61.6 5.1
25 11 14.64 − 6 34.7 1.176 0.468 23.2 58.2 5.1
26 11 15.53 − 5 38.8 1.205 0.460 21.8 54.6 5.0

Total visual magnitude estimates: Aug. 18.39 UT, 5.5 (K. Thalassoudis, Prospect, South Australia, 10 × 70 binoculars); 19.35, 5.4 (D. Seargent, The Entrance, N.S.W., 25 × 100 binoculars); 19.40, 5.5 (A. C. Beresford, Mrytle Bank, South Australia, 7 × 50 binoculars).

1995 August 20 Brian G. Marsden