Circular No. 5849

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 QP E. F. Helin, Jet Propulsion Laboratory, reports her discovery with K.

Lawrence of a fast-moving asteroidal object on films taken with the 0.46m Palomar Schmidt by Helin, Lawrence, and J. Alu. Confirmation was obtained by D. D. Balam and J. B. Tatum using the 0.5-m reflector (+ CCD) at the Climenhaga Observatory.

1993 UT  α_{2000}  δ_{2000}  Mag. Observer
Aug. 23.39410 23^{h}04^{m}23.^{s}66 +18^{o}15′01′′.1  17.0 Helin
23.41649 23 04 25.11 +18 15 54.4  _{”}
24.31319 23 05 28.22 +18 52 35.9  _{”}
24.33594 23 05 29.31 +18 53 32.9  _{”}
26.18824 23 07 36.17 +20 07 15.4  Balam
26.19237 23 07 36.35 +20 07 25.7  _{”}
26.19778 23 07 36.74 +20 07 37.3 16.3 _{”}
26.20113 23 07 36.97 +20 07 46.3  _{”}
26.20461 23 07 37.19 +20 07 54.6  _{”}

The following preliminary orbital elements are by G. V. Williams, SAO:

T = 1993 Sept. 4.372 TT  ω = 49.^{o}326
e = 0.37930  Ω = 295.744 }2000.0
q = 1.19023 AU  i = 6.175

a = 1.91755 AU n^{o} = 0.371180 P = 2.66 years

1993 TT α_{2000}  δ_{2000}  Δ  r  ϵ  β  V
Aug. 21 23^{h}01.^{m}62 +16^{o}34.^{′}7 0.215 1.198 147.^{o}6 26.^{o}9 16.3
26 23 07.36 +20 00.3 0.211 1.194 147.3 27.2 16.2
31 23 12.83 +23 06.6 0.210 1.191 147.1 27.4 16.2
Sept. 5 23 18.05 +25 48.8 0.211 1.190 146.9 27.6 16.2
10 23 23.03 +28 02.8 0.213 1.191 146.9 27.5 16.3
15 23 27.84 +29 46.7 0.218 1.195 147.1 27.2 16.3
20 23 32.60 +31 00.0 0.224 1.200 147.6 26.6 16.4
25 23 37.45 +31 44.3 0.233 1.207 148.3 25.9 16.4
30 23 42.47 +32 02.2 0.242 1.216 149.0 25.1 16.5

1993 August 26 Daniel W. E. Green