Circular No. 5954

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 MUELLER (1994c)

The following precise positions have been reported:

1994 UT  α_{2000}  δ_{2000}  m_{1} Observer
Mar. 15.75156 15^{h}33^{m}09.^{s}77 +3^{o}28′51′′.5 16.4 Nakamura
15.75972 15 33 07.96 +3 28 57.4  _{”}
18.46631 15 22 54.42 +4 01 21.5  Scotti
18.47365 15 22 52.69 +4 01 26.6  _{”}

A. Nakamura (Kuma Kogen). 0.6-m f/6 Ritchey-Chrétien + CCD. Com-

municated by S. Nakano. J. V. Scotti (Kitt Peak). 0.9-m Spacewatch telescope.

Parabolic orbital elements from six observations Mar. 10-18:

T = 1993 Dec. 3.990 TT  ω = 102.^{o}512
Ω = 4.933 }2000.0
q = 1.81118 AU  i = 145.454
1994 TT α_{2000}  δ_{2000}  Δ  r  ϵ  β  m_{1}
Mar. 9 15^{h}55.^{m}61 + 2^{o}13.^{′}0 1.613 2.169 110.^{o}4 25.^{o}4 16.4
14 15 39.41 + 3 08.4 1.542 2.204 119.0 23.2 16.4
19 15 20.81 + 4 07.9 1.482 2.239 128.1 20.5 16.4
24 14 59.95 + 5 09.2 1.437 2.275 137.5 17.2 16.4
29 14 37.20 + 6 09.4 1.410 2.311 146.9 13.7 16.4
Apr. 3 14 13.20 + 7 04.7 1.402 2.349 155.5 10.2 16.4
8 13 48.80 + 7 51.8 1.416 2.387 161.7  7.6 16.5
13 13 24.94 + 8 28.2 1.451 2.426 162.6  7.1 16.7
18 13 02.46 + 8 52.7 1.506 2.466 157.9  8.8 16.8
23 12 41.98 + 9 05.8 1.580 2.506 150.7 11.3 17.0
28 12 23.82 + 9 09.0 1.671 2.547 142.9 13.8 17.2

NOVA CASSIOPEIAE 1993 Visual magnitude estimates: Mar. 2.81 UT, 14.3 (T. Vanmunster,

Landen, Belgium); 3.75, 14.9 (A. Mizser, Budapest, Hungary); 5.75, 15.7 (L. Szentaskó, Veresegyház, Hungary); 8.78, 15.9 (Szentaskó); 11.75, 16.2 (Szentaskó); 12.77, 16.2 (Szentaskó); 16.80, 16.0 (Szentaskó).

1994 March 18 Brian G. Marsden