Circular No. 5837

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 OV_{1}

E. F. Helin reports the discovery of a fast-moving asteroidal object by K. Lawrence and herself on films taken July 16 and 20 with the 0.46-m Palomar Schmidt by Helin, Lawrence, and M. Nassir. C. S. Shoemaker, E. M. Shoemaker, and D. H. Levy independently found this object with the same telescope on films taken July 23-25:

1993 UT α_{2000} δ_{2000} Mag. Observer
July 16.44757 21^{h}54^{m}32.^{s}89 −19^{o}15′10′′.0  Helin
20.42813 21 51 42.68 −17 26 21.2 16.0 _{”}
20.45764 21 51 41.02 −17 25 34.2  _{”}
23.38438 21 49 11.12 −16 07 35.3 17 Shoemaker
24.31910 21 48 19.89 −15 43 05.6  _{”}
24.34774 21 48 17.99 −15 42 22.9  _{”}
25.36441 21 47 19.71 −15 15 58.0  _{”}

Orbital elements by G. V. Williams, Center for Astrophysics:

T = 1993 June 10.067 TT  ω = 323.^{o}104
e = 0.43688  Ω = 311.013 }2000.0
q = 1.31407 AU  i = 11.109

a = 2.33355 AU n^{o} = 0.276490 P = 3.56 years

1993 TT α_{2000} δ_{2000} Δ r ϵ β V
Aug. 1 21^{h}40.^{m}48 −12^{o}32.^{′}0 0.403 1.409 165.^{o}6 10.^{o}3 15.9
6 21 35.04 −10 40.2 0.416 1.427 170.4  6.8 15.9
11 21 29.73 − 8 59.9 0.434 1.446 173.5  4.5 15.9
16 21 24.84 − 7 32.0 0.456 1.466 172.4  5.2 16.1
21 21 20.63 − 6 16.5 0.482 1.487 168.5  7.8 16.3
26 21 17.29 − 5 12.5 0.512 1.509 163.8 10.8 16.6
31 21 14.92 − 4 18.9 0.545 1.531 159.0 13.6 16.9
Sept. 5 21 13.56 − 3 34.3 0.583 1.555 154.4 16.3 17.2
10 21 13.19 − 2 57.2 0.625 1.579 149.9 18.7 17.4
15 21 13.79 − 2 26.2 0.670 1.604 145.6 20.8 17.7
20 21 15.30 − 1 59.7 0.718 1.629 141.5 22.6 17.9
25 21 17.67 − 1 36.4 0.770 1.654 137.5 24.2 18.2
30 21 20.81 − 1 15.2 0.825 1.681 133.7 25.5 18.4

1993 August 2 Daniel W. E. Green