Circular No. 7469

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 J 1 B. Gladman, Observatoire de la Côte d’Azur, reports his recovery of

this satellite on CCD frames obtained with the European Southern Observatory’s 2.2-m reflector at La Silla (July 25) and 8.2-m Very Large Telescope at Paranal (July 28):

2000 UT  α_{2000}  δ_{2000}  R
July 25.41389  4^{h}12^{m}16.^{s}08  +19^{o}28′01′′.4
25.41704  4 12 16.18  +19 28 01.4  21.5
25.42035  4 12 16.31  +19 28 01.5
28.40119  4 14 13.55  +19 31 39.3  20.8
28.40910  4 14 13.85  +19 31 39.9
28.41756  4 14 14.17  +19 31 40.6

Improved orbital elements by G. V. Williams, Harvard-Smithsonian Center for Astrophysics, using also the 14 observations on IAUC 7460:

Epoch = 2000 Sept. 13.0 TT

T = 2001 Aug. 19.3452 TT  ω = 49.^{o}2924
e = 0.124529  Ω = 281.1044 }2000.0
q = 0.141481 AU  i = 143.0571

a = 0.161605 AU n^{o} = 0.468787 P = 767.9 days

2000 TT α_{2000}  δ_{2000}  Δ  r_{J}  ϵ Δα′′  Δδ′′
July 25 4^{h}12.^{m}00 +19^{o}27.^{′}4 5.638 0.182 57.^{o}7  91+ 2861−
Aug. 4 4 18.33 +19 38.7 5.501 0.182 65.8 455− 3199−
14 4 23.83 +19 47.0 5.354 0.182 74.1 1000− 3532−
24 4 28.41 +19 52.4 5.199 0.181 82.6 1538− 3859−
Sept. 3 4 31.93 +19 55.0 5.040 0.181 91.4 2064− 4181−
13 4 34.27 +19 54.9 4.881 0.181 100.6 2570− 4497−
23 4 35.32 +19 52.1 4.725 0.180 110.1 3049− 4805−
Oct. 3 4 35.02 +19 46.9 4.578 0.180 120.0 3495− 5104−
13 4 33.35 +19 39.4 4.445 0.179 130.3 3898− 5380−
23 4 30.35 +19 29.7 4.329 0.178 140.9 4254− 5630−
Nov. 2 4 26.17 +19 18.2 4.236 0.177 151.9 4557− 5843−
12 4 21.05 +19 05.3 4.169 0.176 163.1 4807− 6006−
22 4 15.34 +18 51.8 4.132 0.175 174.2 5001− 6104−
Dec. 2 4 09.43 +18 38.6 4.126 0.174 173.4 5147− 6131−
12 4 03.78 +18 26.8 4.150 0.173 162.1 5253− 6085−
22 3 58.77 +18 17.6 4.204 0.171 150.8 5326− 5966−
2000 July 28  \begin{matrix}c \\ ◯ \end{matrix} Copyright 2000 CBAT  Brian G. Marsden