Central Bureau for Astronomical Telegrams
IAUC 7447: S/1999 U 3
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Circular No. 7447
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
BMARSDEN@CFA.HARVARD.EDU or DGREEN@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html ISSN 0081-0304
Phone 617-495-7244/7440/7444 (for emergency use only)
S/1999 U 3
B. Gladman, Observatoire de la Cote d'Azur, reports the measurements
below from CCD recovery images of this Uranian satellite (cf. IAUC 7230,
7248) obtained by M. Holman, Gladman and J. J. Kavelaars with the 3.8-m
Mayall Telescope at Kitt Peak in May and by Holman, T. Grav, N. Haug
and K. B. Klepper with the 2.5-m Nordic Optical Telescope at La Palma in
June. In May the satellite was located about 3'.0 east and 0'.4 north of
the prediction on IAUC 7385 (elements on MPC 39024).
2000 UT R.A. (2000) Decl. R
May 27.44653 21 32 43.50 -15 09 11.0
28.44771 21 32 42.91 -15 09 15.9 23.0
29.44628 21 32 42.11 -15 09 20.9
June 28.14743 21 30 56.41 -15 18 28.0 23.2
28.17575 21 30 56.23 -15 18 28.4 23.3
28.20430 21 30 56.07 -15 18 29.3 23.3
The following improved orbital elements, using also the observations
on MPC 38967, have been computed by G. V. Williams, Center for Astrophysics,
starting from a new unperturbed solution by the undersigned.
Epoch = 2000 Sept.13.0 TT
T = 2001 Sept.17.7268 TT Peri. = 173.5689
e = 0.327449 Node = 320.1468 2000.0
q = 0.072442 AU Incl. = 146.3403
a = 0.107712 AU n = 0.1843682 P = 5.346 years
2000 TT R. A. (2000) Decl. Delta r_U Elong. dR.A. dDecl.
June 15 21 32.04 -15 12.9 19.430 0.116 123.8 946- 262+
25 21 31.25 -15 16.9 19.296 0.115 133.5 960- 268+
July 5 21 30.20 -15 22.1 19.183 0.114 143.3 972- 274+
15 21 28.95 -15 28.3 19.093 0.113 153.2 981- 280+
25 21 27.53 -15 35.1 19.029 0.111 163.1 988- 285+
Aug. 4 21 26.00 -15 42.4 18.993 0.110 173.0 993- 290+
14 21 24.42 -15 49.9 18.986 0.109 176.9 995- 295+
24 21 22.86 -15 57.1 19.009 0.108 166.9 996- 298+
Sept. 3 21 21.39 -16 03.9 19.061 0.107 156.9 994- 300+
13 21 20.05 -16 09.9 19.139 0.106 146.9 991- 301+
23 21 18.92 -16 15.0 19.243 0.105 136.8 986- 301+
Oct. 3 21 18.04 -16 18.8 19.369 0.103 126.8 980- 300+
13 21 17.44 -16 21.3 19.512 0.102 116.8 973- 297+
23 21 17.16 -16 22.4 19.668 0.101 106.8 965- 294+
Nov. 2 21 17.21 -16 21.9 19.833 0.100 96.8 956- 289+
12 21 17.61 -16 19.9 20.002 0.099 86.9 946- 284+
22 21 18.33 -16 16.4 20.169 0.098 77.0 935- 278+
Dec. 2 21 19.38 -16 11.4 20.329 0.096 67.1 924- 271+
12 21 20.72 -16 05.1 20.478 0.095 57.3 912- 264+
22 21 22.33 -15 57.6 20.611 0.094 47.5 899- 257+
(C) Copyright 2000 CBAT
2000 July 3 (7447) Brian G. Marsden
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