Circular No. 5700

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)

1993 BW_{2}

C. S. Shoemaker reports the following precise positions of a fast-moving asteroidal object that she discovered on films taken by E. M. Shoemaker, D. H. Levy, and herself with the 0.46-m Schmidt telescope at Palomar:

1993 UT  α_{2000}  δ_{2000}  Mag.
Jan. 28.26198  6^{h}31^{m}49.^{s}62  +31^{o}25′37′′.9  15.7
28.30122  6 31 53.78  +31 30 03.4
28.44340  6 32 10.02  +31 45 52.1
29.19322  6 33 50.12  +33 07 34.2
29.20104  6 33 51.07  +33 08 19.7
29.30781  6 34 02.45  +33 19 28.4
29.38368  6 34 10.79  +33 27 12.4

Orbital elements by B. G. Marsden from six of the above positions:

T = 1992 Nov. 19.992 TT  ω = 286.^{o}539
e = 0.31282  Ω = 121.202 }2000.0
q = 0.92033 AU  i = 22.175

a = 1.33929 AU n^{o} = 0.635907 P = 1.55 years

1993TT α_{2000} δ_{2000} Δ r ϵ β V
Jan. 23 6^{h}20.^{m}48 +18^{o}46.^{′}2 0.132 1.102 151.^{o}4 25.^{o}3 14.5
25 6 24.83 +24 15.4 0.143 1.111 150.5 25.9 14.7
27 6 29.14 +28 53.5 0.155 1.121 148.8 27.1 14.9
29 6 33.41 +32 47.0 0.169 1.130 146.7 28.6 15.2
31 6 37.66 +36 02.8 0.184 1.140 144.5 30.2 15.4
Feb. 2 6 41.91 +38 47.0 0.199 1.149 142.3 31.7 15.6
4 6 46.17 +41 04.9 0.215 1.159 140.2 33.0 15.9
6 6 50.43 +43 00.9 0.231 1.169 138.2 34.2 16.1
8 6 54.70 +44 38.6 0.248 1.178 136.3 35.3 16.3
10 6 58.99 +46 00.9 0.266 1.188 134.6 36.3 16.5
12 7 03.29 +47 10.2 0.283 1.198 132.9 37.1 16.7
14 7 07.60 +48 08.4 0.301 1.208 131.3 37.9 16.8
16 7 11.95 +48 57.0 0.319 1.218 129.9 38.5 17.0
18 7 16.31 +49 37.4 0.338 1.227 128.5 39.1 17.1
20 7 20.71 +50 10.6 0.357 1.237 127.1 39.6 17.3
22 7 25.13 +50 37.5 0.376 1.247 125.8 40.0 17.4

1993 February 1 Daniel W. E. Green