Circular No. 7513

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) CBAT@CFA.HARVARD.EDU (science)

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S/2000 S 3 AND S/2000 S 4 The team led by B. Gladman reports the discovery of what appear to

be two further satellites of Saturn (although as with the objects reported on IAUC 7512 there is the possibility that some are centaurs). Selected CCD precise positions follow:

2000 UT α_{2000} δ_{2000} R Observer
Sept.23.42332 3^{h}56^{m}03.^{s}73 +17^{o}47′58′′.3 20.1 Gladman
24.42582 3 55 59.51 +17 47 50.2 20.2 Kavelaars
25.40208 3 55 55.00 +17 47 40.8  Allen
27.43747 3 55 44.17 +17 47 18.2  Hergenrother
29.30844 3 55 32.77 +17 46 55.5  Doressoundiram
Sept.23.42883 3 56 00.48 +17 55 14.5 22.4 Gladman
24.43323 3 55 57.04 +17 54 54.6 22.4 Kavelaars
27.48204 3 55 44.21 +17 53 50.9  Hergenrother

B. Gladman and J. Kavelaars (Mauna Kea). 3.6-m Canada-France-Hawaii

Telescope. Measurer Gladman. R. L. Allen and T. Rigg (McGraw-Hill Observatory). 2.4-m Michigan-

Dartmouth-M.I.T. Telescope. Measurer Allen. C. W. Hergenrother and S. M. Larson (Lunar and Planetary Laboratory,

Catalina Station). 1.54-m reflector. Measurer Gladman. A. Doressoundiram and J. Romon (European Southern Observatory).

3.5-m New Technology Telescope. Measurer Gladman.

2000TT α_{2000} δ_{2000} Δ r_{S} ϵ Δα′′ Δδ′′
Oct. 23 3^{h}51.^{m}18 +17^{o}37.^{′}6 8.164 0.089 150.^{o}3 321− 627−
Nov. 2 3 48.45 +17 31.8 8.091 0.091 160.9 207− 403−
12 3 45.40 +17 25.5 8.049 0.093 171.5  95− 170−
22 3 42.20 +17 19.0 8.039 0.096 176.5  13+ 68+
Dec. 2 3 39.04 +17 13.1 8.060 0.099 166.2 117+ 305+
12 3 36.11 +17 08.1 8.113 0.102 155.5 218+ 538+
22 3 33.58 +17 04.7 8.196 0.105 144.7 318+ 762+
Oct. 23 3 51.58 +17 39.3 8.168 0.083 150.2  18+ 520−
Nov. 2 3 49.00 +17 31.6 8.098 0.085 160.8 266+ 413−
12 3 46.10 +17 23.4 8.059 0.087 171.3 508+ 296−
22 3 43.04 +17 15.1 8.050 0.089 176.5 741+ 171−
Dec. 2 3 40.02 +17 07.3 8.075 0.092 166.4 960+ 42−
12 3 37.21 +17 00.6 8.130 0.095 155.7 1165+ 90+
22 3 34.78 +16 55.6 8.215 0.098 145.0 1354+ 220+
2000 October 25  \begin{matrix}c \\ ◯ \end{matrix} Copyright 2000 CBAT  Brian G. Marsden