Circular No. 6117

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)

Phone 617-495-7244/7440/7444 TWX 710-320-6842 ASTROGRAM CAM MARSDEN@CFA.HARVARD.EDU or GREEN@CFA.HARVARD.EDU (science)

PERIODIC COMET McNAUGHT-RUSSELL (1994u) Further precise positions have been reported as follows:

1994 UT α_{2000} δ_{2000} m_{1} Observer
Dec. 18.48754 7^{h}07^{m}13.^{s}41 −25^{o}39′04′′.2  Steel
18.61300 7 07 05.09 −25 40 09.9  Kojima
18.64468 7 07 03.03 −25 40 22.9 16.1  _{”}
18.72388 7 06 57.43 −25 40 51.1  Steel
19.48112 7 06 08.98 −25 46 15.5  _{”}
19.71375 7 05 53.11 −25 47 50.5  _{”}

D. I. Steel, R. H. McNaught, and D. Asher (Siding Spring). 1.0-m reflector

+ CCD. Measurer McNaught. T. Kojima (YGCO Chiyoda Observatory). 0.25-m f/6 reflector + CCD.

Communicated by S. Nakano. Elliptical orbital elements from 17 observations Dec. 12–19:

T = 1994 Sept. 6.150 TT  ω = 171.^{o}283
e = 0.79166  Ω = 217.470 }2000.0
q = 1.28378 AU  i = 28.988

a = 6.16206 AU n^{o} = 0.064434 P = 15.30 years

1994/95 α_{2000}  δ_{2000}  Δ  r  ϵ  β  m_{1}
Dec. 14 7^{h}11.^{m}93 −24^{o}57.^{′}6 1.054 1.810 125.^{o}3 26.^{o}4 16.2
19 7 06.66 −25 42.9 1.084 1.853 127.2 25.0 16.4
24 7 01.18 −26 10.3 1.118 1.896 128.8 23.8 16.5
29 6 55.69 −26 20.6 1.155 1.939 130.0 22.8 16.7
Jan. 3 6 50.41 −26 15.0 1.195 1.983 130.9 22.0 16.9
8 6 45.52 −25 54.9 1.239 2.027 131.2 21.4 17.0
13 6 41.19 −25 22.3 1.288 2.072 131.2 20.9 17.2
18 6 37.50 −24 39.3 1.340 2.116 130.6 20.7 17.4
23 6 34.55 −23 47.7 1.396 2.161 129.7 20.5 17.6
28 6 32.35 −22 49.5 1.455 2.206 128.3 20.5 17.8
Feb. 2 6 30.92 −21 46.4 1.519 2.251 126.6 20.6 17.9
7 6 30.26 −20 40.1 1.587 2.295 124.6 20.7 18.1
12 6 30.34 −19 32.1 1.658 2.340 122.4 20.9 18.3
17 6 31.12 −18 23.7 1.732 2.385 120.0 21.0 18.5
22 6 32.54 −17 15.8 1.810 2.430 117.5 21.2 18.6

1994 December 20 Daniel W. E. Green