(7) Iris

Orbital Elements

    (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.

These orbital elements are also available in forms suitable for loading into a number of popular planetarium-type software programs.

Ephemeris

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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