Circular No. 7132

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)

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SATELLITES OF URANUS

Ephemerides for Uranus XVI = S/1997 U 1 (Caliban) and Uranus XVII = S/1997 U 2 (Sycorax), respectively (orbits IAUC 6870, 6869):

1999 TT α_{2000} δ_{2000} Δ r_{U} ϵ Δα′′ Δδ′′
Apr. 12 21^{h}15.^{m}58 −16^{o}37.^{′}1 20.337 0.051 65.^{o}4 249+ 10−
22 21 16.67 −16 33.1 20.180 0.051 75.0 221+ 51−
May 2 21 17.44 −16 30.5 20.016 0.050 84.5 190+ 92−
12 21 17.90 −16 29.3 19.849 0.050 94.1 158+ 133−
22 21 18.02 −16 29.6 19.683 0.050 103.7 124+ 172−
June 1 21 17.82 −16 31.4 19.523 0.049 113.3  89+ 211−
11 21 17.31 −16 34.5 19.375 0.049 123.0  53+ 247−
21 21 16.50 −16 38.9 19.241 0.049 132.8  17+ 281−
July 1 21 15.43 −16 44.4 19.127 0.048 142.6  21− 311−
11 21 14.13 −16 50.7 19.035 0.048 152.5  58− 338−
21 21 12.67 −16 57.7 18.969 0.047 162.4  95− 360−
31 21 11.09 −17 04.9 18.931 0.047 172.3 131− 378−
Aug. 10 21 09.46 −17 12.2 18.922 0.046 177.6 167− 390−
20 21 07.84 −17 19.2 18.941 0.046 167.7 200− 396−
30 21 06.30 −17 25.6 18.990 0.046 157.6 231− 397−
Sept. 9 21 04.91 −17 31.3 19.066 0.045 147.6 258− 392−
1999 TT α_{2000}  δ_{2000}  Δ  r_{U}  ϵ Δα′′  Δδ′′
Apr. 12 21^{h}16.^{m}71 −16^{o}34.^{′}0 20.268 0.123 65.^{o}2 1221+ 173+
22 21 17.84 −16 29.4 20.113 0.123 74.7 1235+ 168+
May 2 21 18.67 −16 26.3 19.951 0.123 84.2 1249+ 162+
12 21 19.18 −16 24.5 19.786 0.123 93.7 1262+ 155+
22 21 19.36 −16 24.3 19.623 0.122 103.3 1274+ 147+
June 1 21 19.21 −16 25.6 19.467 0.122 113.0 1285+ 138+
11 21 18.75 −16 28.3 19.322 0.122 122.7 1294+ 129+
21 21 17.99 −16 32.3 19.192 0.121 132.4 1301+ 119+
July 1 21 16.97 −16 37.4 19.082 0.121 142.2 1306+ 108+
11 21 15.72 −16 43.5 18.995 0.121 152.1 1309+ 96+
21 21 14.30 −16 50.3 18.933 0.120 162.0 1309+ 84+
31 21 12.76 −16 57.4 18.900 0.120 171.9 1306+ 71+
Aug. 10 21 11.16 −17 04.7 18.895 0.119 178.0 1301+ 58+
20 21 09.57 −17 11.8 18.921 0.118 168.1 1293+ 45+
30 21 08.06 −17 18.5 18.975 0.118 158.1 1282+ 33+
Sept. 9 21 06.68 −17 24.4 19.057 0.117 148.1 1269+ 21+

1999 March 27  \begin{matrix}c \\ ◯ \end{matrix} Copyright 1999 CBAT  Brian G. Marsden