(7) Iris
Orbital Elements
The following orbital elements are taken from MPC 24084:
(7) Iris
Epoch 2001 Apr. 1.0 TT = JDT 2452000.5 (M-c) Bowell
M 175.14930 (2000.0) P Q
n 0.26738626 Peri. 145.17091 +0.70403946 -0.70380971
a 2.3862173 Node 259.86604 +0.62773415 +0.67915670
e 0.2301193 Incl. 5.52422 +0.33208174 +0.20832206
P 3.69 H 5.51 G 0.15
From 3313 observations at 57 oppositions, 1850-1993, mean residual 0".57.
An explanation of the orbital
elements is available.These orbital elements are also available in forms suitable for loading into a number of popular planetarium-type software programs.
Ephemeris
The following ephemeris is at intervals of five days. A daily ephemeris covering the same time interval is also available.
Date TT R. A. (2000) Decl. Delta r Elong. Phase V 2001 02 20 15 25.36 -23 09.3 2.639 2.922 96.6 19.6 10.9 2001 02 25 15 27.97 -23 21.7 2.570 2.924 100.9 19.4 10.9 2001 03 02 15 30.03 -23 32.0 2.502 2.926 105.5 19.1 10.8 2001 03 07 15 31.52 -23 40.2 2.435 2.928 110.1 18.6 10.7 2001 03 12 15 32.41 -23 46.2 2.370 2.930 114.8 17.9 10.7 2001 03 17 15 32.67 -23 49.9 2.307 2.931 119.7 17.1 10.6 2001 03 22 15 32.28 -23 51.1 2.248 2.932 124.7 16.2 10.5 2001 03 27 15 31.21 -23 49.5 2.191 2.933 129.9 15.1 10.4 2001 04 01 15 29.49 -23 45.2 2.139 2.934 135.2 13.9 10.3 2001 04 06 15 27.12 -23 37.9 2.091 2.935 140.7 12.5 10.2 2001 04 11 15 24.14 -23 27.5 2.049 2.935 146.2 10.9 10.1 2001 04 16 15 20.60 -23 14.0 2.012 2.935 151.9 9.3 10.0 2001 04 21 15 16.57 -22 57.4 1.981 2.935 157.7 7.5 9.9 2001 04 26 15 12.14 -22 37.8 1.957 2.935 163.4 5.6 9.8 2001 05 01 15 07.41 -22 15.4 1.939 2.935 169.1 3.7 9.6 2001 05 06 15 02.52 -21 50.7 1.929 2.934 174.1 2.0 9.5 2001 05 11 14 57.59 -21 24.1 1.926 2.933 175.1 1.7 9.5 2001 05 16 14 52.74 -20 56.2 1.930 2.932 170.7 3.2 9.6 2001 05 21 14 48.10 -20 27.7 1.941 2.931 165.2 5.1 9.7 2001 05 26 14 43.77 -19 59.2 1.960 2.930 159.5 7.0 9.8 2001 05 31 14 39.86 -19 31.6 1.985 2.928 153.8 8.8 9.9 2001 06 05 14 36.44 -19 05.4 2.016 2.927 148.1 10.5 10.0 2001 06 10 14 33.57 -18 41.1 2.052 2.925 142.6 12.2 10.1 2001 06 15 14 31.29 -18 19.2 2.094 2.923 137.3 13.6 10.2 2001 06 20 14 29.61 -18 00.1 2.141 2.920 132.0 15.0 10.3 2001 06 25 14 28.55 -17 43.9 2.191 2.918 127.0 16.2 10.4 2001 06 30 14 28.11 -17 30.8 2.246 2.915 122.0 17.2 10.5 2001 07 05 14 28.28 -17 20.9 2.303 2.912 117.3 18.1 10.6 2001 07 10 14 29.02 -17 14.1 2.362 2.909 112.6 18.8 10.7 2001 07 15 14 30.32 -17 10.3 2.424 2.906 108.1 19.4 10.7 2001 07 20 14 32.15 -17 09.3 2.487 2.902 103.8 19.9 10.8 2001 07 25 14 34.49 -17 11.1 2.551 2.898 99.6 20.2 10.9 2001 07 30 14 37.31 -17 15.3 2.616 2.895 95.4 20.4 10.9
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