进入观测期的C/2007 W1 (BOATTINI)
C/2007 W1 (Boattini)Orbital Elements
The following orbital elements are taken from MPEC 2008-E10:
C/2007 W1 (Boattini)
Epoch 2008 June 23.0 TT = JDT 2454640.5
T 2008 June 24.8823 TT MPC
q 0.849591 (2000.0) P Q
z-0.000204 Peri.306.5572 +0.1973251 +0.9775507
+/-0.000013 Node 334.5235 -0.8356168 +0.1283113
e 1.000173 Incl. 9.8892 -0.5126475 +0.1671251
From 270 observations 2007 Nov. 20-2008 Mar. 1, mean residual 0".6.
Elements are also available for the current standard epoch:
C/2007 W1 (Boattini)
Epoch 2008 May 14.0 TT = JDT 2454600.5
T 2008 June 24.8337 TT MPC
q 0.848256 (2000.0) P Q
z+0.000401 Peri.306.6187 +0.1984277 +0.9773274
+/-0.000013 Node 334.5265 -0.8354584 +0.1292483
e 0.999660 Incl. 9.8906 -0.5124799 +0.1677084
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.
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Ephemeris
The following ephemeris is at intervals of five days. A daily ephemeris covering the same time interval is also available.
Personalized ephemerides for this (and other) objects may be generated using the Minor Planet & Comet Ephemeris Service.
Recent magnitude estimates for this comet (as reported to the ICQ) may be available.
Date TT R. A. (2000) Decl. Delta r Elong.Phase m1 m2
2008 02 24 12 47.45 -12 12.9 1.328 2.171 138.5 17.613.5
2008 02 29 12 46.52 -12 53.4 1.227 2.106 143.3 16.313.2
2008 03 05 12 44.70 -13 34.2 1.131 2.041 148.2 14.912.9
2008 03 10 12 41.89 -14 15.4 1.039 1.976 153.0 13.212.5
2008 03 15 12 37.99 -14 57.0 0.953 1.911 157.8 11.412.2
2008 03 20 12 32.87 -15 39.0 0.872 1.845 162.1 9.611.9
2008 03 25 12 26.44 -16 21.5 0.796 1.779 165.3 8.211.5
2008 03 30 12 18.58 -17 04.1 0.727 1.713 166.1 8.011.1
2008 04 04 12 09.20 -17 46.7 0.663 1.647 163.8 9.710.8
2008 04 09 11 58.27 -18 29.0 0.605 1.581 159.1 13.110.4
2008 04 14 11 45.80 -19 11.0 0.552 1.516 153.0 17.510.0
2008 04 19 11 31.83 -19 52.7 0.504 1.450 146.0 22.8 9.6
2008 04 24 11 16.39 -20 34.3 0.462 1.386 138.5 28.8 9.2
2008 04 29 10 59.53 -21 16.1 0.423 1.322 130.6 35.4 8.8
2008 05 04 10 41.23 -21 58.7 0.388 1.259 122.3 42.6 8.4
2008 05 09 10 21.32 -22 43.1 0.356 1.198 113.8 50.4 8.0
2008 05 14 09 59.37 -23 29.7 0.326 1.140 105.1 58.9 7.6
2008 05 19 09 34.52 -24 17.2 0.297 1.084 95.9 68.2 7.2
2008 05 24 09 05.44 -25 00.1 0.271 1.031 86.3 78.5 6.8
2008 05 29 08 30.44 -25 25.3 0.247 0.983 76.0 89.9 6.4
2008 06 03 07 48.02 -25 08.3 0.227 0.941 65.0 102.4 6.0
2008 06 08 06 58.33 -23 33.5 0.214 0.906 53.9 115.1 5.7
2008 06 13 06 04.89 -20 12.3 0.210 0.878 44.4 125.9 5.5
2008 06 18 05 14.31 -15 15.1 0.218 0.859 39.5 131.3 5.5
2008 06 23 04 32.25 -09 35.2 0.237 0.850 40.4 129.2 5.7
2008 06 28 04 00.53 -04 07.8 0.265 0.852 45.3 121.9 5.9
2008 07 03 03 37.94 +00 39.9 0.299 0.863 51.5 112.8 6.2
2008 07 08 03 22.25 +04 43.5 0.336 0.884 57.7 103.6 6.6
2008 07 13 03 11.36 +08 08.5 0.375 0.914 63.6 94.9 7.0
2008 07 18 03 03.62 +11 02.0 0.412 0.951 69.1 87.0 7.4
2008 07 23 02 57.78 +13 30.1 0.448 0.995 74.5 79.8 7.7
2008 07 28 02 52.91 +15 37.5 0.482 1.044 79.8 73.2 8.1
2008 08 02 02 48.33 +17 27.3 0.513 1.097 85.0 67.2 8.5
2008 08 07 02 43.52 +19 01.7 0.542 1.154 90.5 61.5 8.8
2008 08 12 02 38.17 +20 22.1 0.569 1.213 96.0 56.2 9.1
2008 08 17 02 32.04 +21 29.4 0.594 1.274 101.8 51.0 9.4
2008 08 22 02 25.03 +22 23.8 0.619 1.337 107.8 46.1 9.7
2008 08 27 02 17.07 +23 05.3 0.644 1.401 114.0 41.210.0
2008 09 01 02 08.21 +23 33.5 0.669 1.466 120.4 36.410.3
2008 09 06 01 58.62 +23 48.4 0.697 1.532 126.9 31.710.6
2008 09 11 01 48.52 +23 50.4 0.727 1.597 133.6 27.210.8
2008 09 16 01 38.19 +23 40.2 0.761 1.663 140.3 22.711.1
2008 09 21 01 27.94 +23 19.1 0.799 1.729 146.8 18.511.4
2008 09 26 01 18.03 +22 48.7 0.843 1.795 153.1 14.611.7
2008 10 01 01 08.75 +22 11.1 0.892 1.861 158.8 11.211.9
2008 10 06 01 00.28 +21 28.7 0.947 1.927 163.4 8.512.2
2008 10 11 00 52.80 +20 43.9 1.009 1.992 165.9 7.012.5
2008 10 16 00 46.37 +19 58.6 1.077 2.057 165.6 6.912.8
2008 10 21 00 41.02 +19 14.6 1.151 2.122 162.7 8.013.1
2008 10 26 00 36.71 +18 33.0 1.231 2.187 158.5 9.613.3
2008 10 31 00 33.42 +17 54.9 1.317 2.251 153.7 11.313.6
2008 11 05 00 31.09 +17 20.9 1.409 2.314 148.7 12.813.9
[ 本帖最后由 suhuasky 于 2008-3-2 11:57 编辑 ]
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