Circular No. 6054

Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION

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

Telephone 617-495-7244/7440/7444 (for emergency use only) TWX 710-320-6842 ASTROGRAM CAM EASYLINK 62794505

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

COMET MACHHOLZ (1994o)

S. Nakano, Sumoto, Japan, reports the following additional CCD observations from T. Kojima (YGCO Chiyoda Observatory):

1994 UT  α_{2000}  δ_{2000}
Aug. 14.62310  4^{h}37^{m}00.^{s}34  +62^{o}09′26′′.3
14.62479  4 37 02.62  +62 09 20.3
14.63311  4 37 12.35  +62 09 03.2
15.55469  4 54 42.95  +61 30 10.7
15.56163  4 54 51.18  +61 29 53.3
15.57005  4 55 00.09  +61 29 29.6
15.58205  4 55 13.57  +61 28 59.5

Nakano provides the following preliminary parabolic orbital elements from 10 observations, Aug. 13–15:

T = 1994 Sept.13.758 TT  ω = 140.^{o}594
Ω = 252.947 }2000.0
q = 0.75747 AU  i = 15.547
1994 TT α_{2000}  δ_{2000}  Δ  r  ϵ  β  m_{1}
Aug. 6 1^{h}34.^{m}11 +60^{o}10.^{′}3 0.384 1.059 86.^{o}0 72.^{o}8 9.7
8 2 14.01 +62 00.4 0.384 1.034 82.2 76.2 9.6
10 2 57.52 +63 02.3 0.386 1.010 78.4 79.6 9.5
12 3 42.02 +63 11.7 0.391 0.986 74.8 82.7 9.4
14 4 24.51 +62 31.2 0.398 0.963 71.4 85.6 9.3
16 5 02.75 +61 09.2 0.408 0.940 68.1 88.1 9.3
18 5 35.77 +59 16.7 0.420 0.918 65.1 90.4 9.2
20 6 03.65 +57 04.2 0.433 0.898 62.4 92.2 9.2
22 6 27.02 +54 40.3 0.449 0.878 60.0 93.7 9.2
24 6 46.67 +52 11.2 0.466 0.859 57.9 94.8 9.2
26 7 03.33 +49 41.4 0.485 0.842 56.0 95.4 9.2
28 7 17.64 +47 13.5 0.505 0.826 54.4 95.7 9.2
30 7 30.09 +44 49.3 0.526 0.811 53.1 95.7 9.2
Sept. 1 7 41.07 +42 29.8 0.549 0.798 51.9 95.3 9.2
3 7 50.90 +40 15.4 0.572 0.787 51.0 94.6 9.2
5 7 59.82 +38 06.4 0.596 0.777 50.3 93.6 9.3

1994 August 15 Daniel W. E. Green