Circular No. 5942

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)

NOVA SAGITTARII 1994 S. S. Hayashi, National Astronomical Observatory, Tokyo, reports the

discovery by Minoru Yamamoto (Okazaki, Aichi) of a probable nova at α = 18^{h}47^{m}40^{s}, δ = −21^{o}28′ (equinox 1950.0). The object was confirmed by K. Hirosawa (Aichi), who gave the position as α = 18^{h}47^{m}30^{s}, δ = −21^{o}21′.0 (equinox 1950.0). Magnitude estimates: Feb. 24.85 UT, 8.9 (Yamamoto, P-MAX 400 film); 25.84, 8.5 (Yamamoto); 25.85, 8.4 (Hirosawa, visual).

COMET MUELLER (1993p)

Improved orbital elements from MPC 23106:

Epoch = 1994 Mar. 29.0 TT

T = 1994 Mar. 26.2796 TT  ω = 261.^{o}0331
e = 1.000279  Ω = 193.7889 }2000.0
q = 0.967273 AU  i = 105.0261
1994 TT α_{2000}  δ_{2000}  Δ  r  ϵ  β  m_{1}
Mar. 19 0^{h}30.^{m}65 −32^{o}43.^{′}0 1.642 0.976 33.^{o}2 34.^{o}0 9.0
24 0 43.53 −34 54.0 1.557 0.968 36.9 38.2 8.8
29 0 58.75 −37 13.3 1.467 0.968 41.0 42.6 8.7
Apr. 3 1 17.15 −39 40.8 1.372 0.977 45.3 46.7 8.6
8 1 39.90 −42 14.9 1.276 0.992 49.9 50.5 8.5
13 2 08.60 −44 50.5 1.182 1.015 54.7 53.7 8.4
18 2 45.22 −47 15.5 1.093 1.045 59.6 56.0 8.4
23 3 31.59 −49 06.4 1.015 1.080 64.6 57.3 8.4
28 4 27.84 −49 46.2 0.953 1.120 69.7 57.4 8.4
May 3 5 30.28 −48 34.9 0.913 1.165 74.5 56.5 8.5
8 6 31.61 −45 16.4 0.899 1.213 78.7 54.7 8.6
13 7 25.32 −40 16.9 0.915 1.264 81.9 52.3 8.8
18 8 09.05 −34 29.3 0.959 1.317 83.9 49.8 9.1
23 8 43.68 −28 43.1 1.028 1.373 84.5 47.2 9.4
28 9 11.18 −23 28.0 1.118 1.430 84.1 44.8 9.8

Visual magnitudes: 1993 Nov. 15.83 UT, 11.4 (M. Tombelli, Montelupo, Italy, 0.44-m reflector); 18.80, 12.6 (K. Sárneczky, Budapest, Hungary, 0.33-m reflector); Dec. 4.12, 12.0 (A. Hale, Orogrande, NM, 0.20-m reflector); 16.98, 10.8 (J. Bortle, Stormville, NY, 0.32-m reflector); 1994 Jan. 4.10, 11.0 (Hale); 11.11, 10.0 (R. Keen, Mt. Thorodin, CO, 0.32-m reflector); 19.71, 11.8 (Sárneczky); 22.10, 9.8: (Keen); Feb. 2.08, 10.8 (Hale).

1994 February 26 Brian G. Marsden