Circular No. 5854

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}

Selected recent precise positions:

1993 UT  α_{2000}  δ_{2000}  V Observer
Aug. 11.97104 21^{h}28^{m}43.^{s}31 −8^{o}41′00′′.8  Sicoli
11.98562 21 28 42.25 −8 40 45.3  _{”}
14.20520 21 26 30.45 −8 01 06.1  McCrosky
14.21462 21 26 29.82 −8 00 56.3  _{”}
17.00005 21 23 54.28 −7 14 40.6 17.0 Sicoli
17.02951 21 23 52.56 −7 14 13.3  _{”}
22.19356 21 19 42.12 −5 58 27.4  McCrosky
22.20487 21 19 41.60 −5 58 18.3  _{”}
24.66638 21 18 01.58 −5 26 11.8  Steel
24.67126 21 18 01.37 −5 26 08.1  _{”}

P. Sicoli, M. Cavagna, C. Gualdoni and E. Colzani (Sormano). 0.5-m reflector + CCD.

R. E. McCrosky and C.-Y. Shao (Oak Ridge). 1.5-m reflector + CCD. D. I. Steel and G. Garradd (Siding Spring). 1.0-m reflector + CCD.

Improved orbital elements:

T = 1993 June 10.2183 TT  ω = 323.^{o}3128
e = 0.437012  Ω = 311.0257 }2000.0
q = 1.316693 AU  i = 11.1845

a = 2.338758 AU n^{o} = 0.2755664 P = 3.577 years

1993TT α_{2000}  δ_{2000}  Δ  r  ϵ  β  V
Sept. 5 21^{h}13.^{m}48 − 3^{o}31.^{′}3 0.585 1.556 154.^{o}4 16.^{o}3 17.2
10 21 13.10 − 2 54.0 0.626 1.580 149.9 18.7 17.4
15 21 13.68 − 2 22.8 0.671 1.605 145.6 20.8 17.7
20 21 15.19 − 1 56.1 0.720 1.630 141.4 22.6 17.9
25 21 17.55 − 1 32.6 0.771 1.655 137.5 24.2 18.2
30 21 20.68 − 1 11.3 0.826 1.681 133.6 25.5 18.4
Oct. 5 21 24.49 − 0 51.4 0.884 1.708 130.0 26.7 18.6
10 21 28.91 − 0 31.9 0.944 1.734 126.4 27.6 18.8
15 21 33.87 − 0 12.4 1.008 1.761 122.9 28.4 19.0
20 21 39.31 + 0 07.7 1.073 1.788 119.5 29.0 19.2

1993 September 4 Brian G. Marsden