Circular No. 5706

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 or GREEN@CFA.BITNET MARSDEN or GREEN@CFAPS2.SPAN

1993 BX_{3}

R. H. McNaught, Bugaldie, N.S.W., reports his discovery of another fast-moving asteroidal object on a U.K. Schmidt plate taken by M. J. Drinkwater. Follow-up observations with the Uppsala Southern Schmidt and all measures are by McNaught:

1993 UT  α_{2000}  δ_{2000}  V
Jan. 31.59756  10^{h}53^{m}11.^{s}50  −24^{o}14′48′′.7  17
31.64270  10 53 18.30  −24 12 14.2
Feb. 2.66066  10 59 27.68  −22 16 10.8
2.66760  10 59 28.56  −22 15 47.0
3.72257  11 02 18.54  −21 16 35.0

Preliminary orbital elements from the above observations:

T = 1993 Jan. 5.321 TT  ω = 289.^{o}746
e = 0.28182  Ω = 175.720 }2000.0
q = 1.00336 AU  i = 2.794

a = 1.39708 AU n^{o} = 0.596857 P = 1.65 years

1993TT α_{2000}  δ_{2000}  Δ  r  ϵ  β  V
Feb. 2 10^{h}57.^{m}53 −22^{o}54.^{′}1 0.071 1.034 131.^{o}4 45.^{o}7 17.1
4 11 03.06 −21 01.6 0.074 1.038 133.7 43.4 17.1
6 11 07.81 −19 13.0 0.077 1.043 136.1 41.0 17.1
8 11 11.87 −17 28.2 0.081 1.048 138.5 38.6 17.2
10 11 15.29 −15 47.4 0.084 1.053 141.0 36.2 17.2
12 11 18.16 −14 10.3 0.087 1.059 143.5 33.7 17.2
14 11 20.51 −12 36.9 0.091 1.064 146.0 31.2 17.3
16 11 22.41 −11 07.1 0.095 1.070 148.6 28.7 17.3
18 11 23.92 − 9 41.0 0.099 1.076 151.2 26.2 17.3
20 11 25.09 − 8 18.5 0.103 1.083 153.8 23.8 17.4
22 11 25.96 − 6 59.7 0.108 1.089 156.5 21.3 17.4
24 11 26.58 − 5 44.6 0.113 1.096 159.1 18.8 17.4
26 11 27.00 − 4 33.3 0.118 1.102 161.7 16.4 17.4

CORRIGENDA

On IAUC 5662, for δ = +81^{o} read δ = +55^{o} On IAUC 5696, for MPC 19257 read MPC 18257

1993 February 5 Gareth V. Williams