Circular No. 7538

Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION

Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.

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S/2000 S 7, S/2000 S 8, S/2000 S 9 The team led by B. Gladman (cf. IAUC 7512) reports the discovery of

three more satellites of Saturn. Selected astrometry and ephemerides:

2000 UT α_{2000} δ_{2000} R Observer
Sept. 23.42883 3^{h}54^{m}08.^{s}54 +17^{o}57′46′′.0 23.7 Gladman
24.43323 3 54 02.30 +17 57 15.0  _{”}
Nov. 4.25248 3 44 35.80 +17 22 12.3  UT1 Team
27.36905 3 36 45.55 +16 56 29.5  Kavelaars
Sept. 23.47373 3 57 42.41 +18 33 04.5  Gladman
24.48641 3 57 38.41 +18 32 46.7 23.5  _{”}
Nov. 4.24298 3 49 30.02 +18 04 58.1 23.6 UT1 Team
27.28907 3 42 10.70 +17 41 28.9  Kavelaars
Sept. 23.46308 3 53 01.51 +18 03 10.6 24.2 Gladman
24.47540 3 52 56.65 +18 02 43.2 23.8  _{”}
Nov. 4.26280 3 44 26.54 +17 29 43.6 24.0 UT1 Team
27.30408 3 37 07.92 +17 05 02.3 23.5 Kavelaars

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

Telescope. Measurer Gladman. UT1 Science Team (Paranal). ESO VLT-UT1 8-m refl. Measurer Gladman. J. Kavelaars and P. Nicholson (Palomar). 5-m refl. Measurer Kavelaars.

2000/01 α_{2000}  δ_{2000}  Δ  r_{S}  ϵ Δα′′  Δδ′′
Dec. 2 3^{h}35.^{m}22 +16^{o}51.^{′}7 8.274 0.176 165.^{o}3 3169− 979−
12 3 32.11 +16 42.1 8.328 0.178 154.4 3231− 1020−
22 3 29.40 +16 34.3 8.410 0.181 143.6 3282− 1056−
Jan. 1 3 27.25 +16 28.8 8.518 0.183 132.9 3325− 1087−
11 3 25.76 +16 25.9 8.646 0.185 122.4 3362− 1113−
Dec. 2 3 40.69 +17 36.8 8.104 0.106 166.8 1537+ 1728+
12 3 37.73 +17 27.4 8.165 0.104 155.9 1608+ 1699+
22 3 35.15 +17 19.5 8.256 0.102 145.2 1667+ 1653+
Jan. 1 3 33.10 +17 13.4 8.372 0.101 134.5 1715+ 1591+
11 3 31.69 +17 09.7 8.510 0.099 124.0 1749+ 1513+
Dec. 2 3 35.67 +17 00.3 8.063 0.146 165.4 2778− 459−
12 3 32.78 +16 51.2 8.115 0.144 154.6 2649− 475−
22 3 30.30 +16 43.9 8.195 0.143 143.9 2503− 484−
Jan. 1 3 28.39 +16 38.8 8.301 0.141 133.2 2342− 487−
11 3 27.14 +16 36.4 8.428 0.140 122.8 2167− 482−
2000 December 7  \begin{matrix}c \\ ◯ \end{matrix} Copyright 2000 CBAT  Brian G. Marsden