C/2009 W2 (Boattini)
Epoch 2010 May 4.0 TT = JDT 2455320.5  
T 2010 May 1.78143 TT                                   Nakano
q   6.9071911            (2000.0)            P               Q
z  +0.0001017      Peri.  121.33830     +0.21413533     +0.97268284
 +/-0.0000697      Node   199.58433     +0.78050676     -0.11520681
e   0.9992977      Incl.  164.48993     +0.58732892     -0.20153284
From 86 observations 2008 Dec. 22-2010 Jan. 23, mean residual 0".60.
   (1/a)org.= +0.000427, (1/a)fut.= +0.000469 (+/-0.000070), Q= 6.
   The comet has passed 1.97 AU from Saturn on 2007 May 18 and
   will pass 2.91 AU from Jupiter on 2011 Oct. 29 UT.
   The prediscovery observations in 2008 were found by M. Meyer.
Residuals in seconds of arc 
2008/                     091124 H01  0.9-  0.0     091209 473  0.1-  0.1+  
081222 G96  0.2-  0.3+    091124 926  0.6+  0.6+    091211 372  0.1-  0.4+  
081222 G96  0.2+  0.7-    091124 926  0.0   0.0     091211 372  1.2+  1.9+  
081222 G96  0.5+  0.5+    091124 926  0.3-  0.1+    091211 372  0.7+  0.6+  
081222 G96  0.6-  0.3-    091124 A77  1.0+  0.2+    091216 204  0.2-  0.2-  
2009/                     091125 372  0.2-  1.7-    091216 204  0.3+  0.1+  
091121 703  0.0   0.9+    091125 372  0.4+  1.0-    091216 372  0.1-  0.8-  
091121 703  1.1+  1.2+    091126 850  0.3+  0.1-    091216 372  0.4-  0.5+  
091121 703  0.4-  1.0-    091126 850  0.3-  0.2+    091223 585  0.2+  0.1+  
091121 703  1.0-  0.3-    091126 H10  0.7+  0.1+    091223 372  0.4+  0.4-  
091123 703  0.3+  1.2+    091126 H10  1.5+  1.0-    091223 349  1.3+  0.9+  
091123 703  0.2-  1.1-    091126 H10  0.5-  0.8-    091223 349  0.5+  0.1-  
091123 703  0.4-  0.7-    091126 G96  0.0   0.2+    091226 G68  0.6-  0.0   
091123 G96  0.1-  0.2+    091126 G96  0.6+  0.2-    091226 G68  0.6-  0.1+  
091123 G96  0.7-  0.0     091126 G96  0.0   0.2+    091228 118  0.8-  0.0   
091123 G96  0.2-  0.1+    091126 G96  0.6+  0.2-    091228 118  0.8-  0.3+  
091123 G96  0.9-  0.4+    091126 G96  0.6-  0.1-    091228 118  0.5-  0.1-  
091124 B18  0.2+  0.1-    091126 349  1.6+  0.8-    091228 118  0.6-  0.2-  
091124 B18  0.3-  0.0     091126 349  1.3+  0.5-    2010/                   
091124 B18  0.3-  0.6-    091127 585  0.1-  0.6-    100104 215  0.1-  0.3+  
091124 B18  0.2-  0.4-    091127 585  0.9-  0.9+    100104 215  0.1-  0.3+  
091124 682  0.5+  0.1-    091127 585  0.5-  1.0+    100104 215  0.0   0.2-  
091124 682  0.2+  0.4+    091127 585  0.1+  0.9+    100117 349  1.7+  0.3+  
091124 G96  0.3-  0.1+    091127 585  1.2+  1.1+    100117 349  0.9+  0.9-  
091124 G96  0.8+  0.2+    091207 473  0.1+  0.0     100118 204  0.3-  0.1-  
091124 G96  0.3-  0.2+    091207 473  0.2-  0.1+    100119 204  0.3-  0.4-  
091124 G96  0.1+  0.3+    091209 104  0.4-  0.0     100121 204  0.2+  0.7-  
091124 H01  1.0-  0.0     091209 104  0.1-  0.4-    100123 349  0.2-  0.1+  
091124 H01  0.9-  0.1+    091209 104  0.5-  0.7-    100123 349  0.6-  0.2-  
091124 H01  1.0-  0.1-    091209 473  0.1-  0.2+                            

NAKANO
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           (C) Copyright 2010 Orbit.Astro.Assoc./ComputingSection
write mail from CFAD0::NAKANO on 2010-03-22 08:10:35(JST).


◎C/2009 W2の軌道と予報位置

 上尾の門田健一氏による1月23日の追跡観測までが報告されています.氏のCCD
全光度は19.5等でした.
 なお,前回のCometary Orbitsに注釈したとおり,この彗星は,2007年5月18日
に土星まで1.97 AUまで接近していました.彗星が木星以外の惑星にこの距離まで
接近するのは,めずらしいことです.彗星は,近日点通過の後,2011年10月29日に
木星まで2.91 AUまで接近します.

    C/2009 W2 (Boattini)
Epoch 2010 May 4.0 TT = JDT 2455320.5  
T 2010 May 1.78143 TT                                   Nakano
q   6.9071911            (2000.0)            P               Q
z  +0.0001017      Peri.  121.33830     +0.21413533     +0.97268284
 +/-0.0000697      Node   199.58433     +0.78050676     -0.11520681
e   0.9992977      Incl.  164.48993     +0.58732892     -0.20153284
From 86 observations 2008 Dec. 22-2010 Jan. 23, mean residual 0".60.
   (1/a)org.= +0.000427, (1/a)fut.= +0.000469 (+/-0.000070), Q= 6.
   The comet has passed 1.97 AU from Saturn on 2007 May 18 and
   will pass 2.91 AU from Jupiter on 2011 Oct. 29 UT.
   The prediscovery observations in 2008 were found by M. Meyer.
Date/        TT  R.A.(2000) Decl.     Delta   r     Daily motion  Mag.  Moon Age
              h    h  m       。  ,                      ,  / PA 。  m1      。
2010 Feb. 15 14  04 47.49  +37 16.1   6.557  6.925     8.2 / 242  18.4   92  .02
          16 14  04 46.88  +37 12.2   6.574  6.924     8.0 / 241  18.4   80  .06
          17 14  04 46.29  +37 08.3   6.591  6.924     7.9 / 241  18.4   68  .11
          18 14  04 45.72  +37 04.4   6.608  6.923     7.7 / 240  18.4   56  .18
          19 14  04 45.16  +37 00.6   6.625  6.923     7.5 / 239  18.4   44  .26
          20 14  04 44.63  +36 56.8   6.642  6.922     7.3 / 239  18.4   32  .35
          21 14  04 44.10  +36 53.0   6.659  6.922     7.2 / 238  18.4   20  .45
          22 14  04 43.60  +36 49.2   6.676  6.922     7.0 / 238  18.4   12  .56
          23 14  04 43.11  +36 45.4   6.694  6.921     6.8 / 237  18.4   16  .67
          24 14  04 42.63  +36 41.7   6.711  6.921     6.6 / 236  18.4   27  .77
          25 14  04 42.17  +36 38.0   6.729  6.920     6.5 / 235  18.4   41  .86
          26 14  04 41.73  +36 34.3   6.746  6.920     6.3 / 235  18.4   56  .93
          27 14  04 41.30  +36 30.7   6.764  6.920     6.1 / 234  18.5   70  .98
          28 14  04 40.89  +36 27.1   6.782  6.919     6.0 / 233  18.5   85 1.00
     Mar.  1 14  04 40.49  +36 23.5   6.799  6.919     5.8 / 232  18.5  100  .99
           2 14  04 40.11  +36 19.9   6.817  6.918     5.7 / 232  18.5  115  .95
           3 14  04 39.74  +36 16.4   6.835  6.918     5.5 / 231  18.5  129  .88
           4 14  04 39.39  +36 12.9   6.853  6.918     5.3 / 230  18.5  143  .80
           5 14  04 39.05  +36 09.5   6.870  6.917     5.2 / 229  18.5  155  .71
           6 14  04 38.73  +36 06.1   6.888  6.917     5.0 / 228  18.5  166  .61
           7 14  04 38.42  +36 02.7   6.906  6.917     4.9 / 227  18.5  169  .51
           8 14  04 38.12  +35 59.4   6.924  6.916     4.7 / 226  18.5  161  .41
           9 14  04 37.84  +35 56.1   6.942  6.916     4.6 / 225  18.5  150  .32
          10 14  04 37.58  +35 52.9   6.959  6.916     4.5 / 224  18.5  139  .23
          11 14  04 37.32  +35 49.6   6.977  6.915     4.3 / 223  18.5  127  .16
          12 14  04 37.08  +35 46.5   6.995  6.915     4.2 / 221  18.5  116  .10
          13 14  04 36.85  +35 43.3   7.012  6.915     4.0 / 220  18.5  104  .05
          14 14  04 36.64  +35 40.2   7.030  6.914     3.9 / 219  18.5   92  .02
          15 14  04 36.44  +35 37.2   7.048  6.914     3.8 / 217  18.5   81  .00
          16 14  04 36.25  +35 34.2   7.065  6.914     3.7 / 216  18.5   69  .01
          17 14  04 36.07  +35 31.2   7.082  6.914     3.5 / 214  18.5   56  .03
          18 14  04 35.91  +35 28.3   7.100  6.913     3.4 / 213  18.6   44  .07
          19 14  04 35.76  +35 25.4   7.117  6.913     3.3 / 211  18.6   32  .13
          20 14  04 35.62  +35 22.6   7.134  6.913     3.2 / 209  18.6   20  .21
          21 14  04 35.49  +35 19.8   7.151  6.912     3.1 / 207  18.6   11  .30
          22 14  04 35.38  +35 17.0   7.168  6.912     3.0 / 205  18.6   13  .40
          23 14  04 35.27  +35 14.3   7.185  6.912     2.9 / 203  18.6   25  .51
          24 14  04 35.18  +35 11.6   7.202  6.912     2.8 / 201  18.6   38  .63
          25 14  04 35.10  +35 09.0   7.219  6.911     2.7 / 199  18.6   52  .73
          26 14  04 35.02  +35 06.4   7.235  6.911     2.6 / 196  18.6   66  .83
          27 14  04 34.96  +35 03.9   7.252  6.911     2.6 / 194  18.6   80  .91
          28 14  04 34.91  +35 01.4   7.268  6.911     2.5 / 191  18.6   95  .97
          29 14  04 34.87  +34 58.9   7.284  6.911     2.4 / 189  18.6  110  .99
          30 14  04 34.84  +34 56.5   7.301  6.910     2.4 / 186  18.6  124  .99
          31 14  04 34.82  +34 54.2   7.316  6.910     2.3 / 183  18.6  138  .97
     Apr.  1 14  04 34.81  +34 51.8   7.332  6.910     2.3 / 180  18.6  151  .92
NAKANO
         **** Don't distribute anyone except personal use only ****
           (C) Copyright 2010 Orbit.Astro.Assoc./ComputingSection
write mail from CFAD0::NAKANO on 2010-02-11 05:57:51(JST).
 
    C/2009 W2 (Boattini)
Epoch 2010 May 4.0 TT = JDT 2455320.5  
T 2010 May 2.65839 TT                                   Nakano
q   6.9049839            (2000.0)            P               Q
z  +0.0005622      Peri.  121.41601     +0.21520597     +0.97243988
 +/-0.0006684      Node   199.59941     +0.78039250     -0.11602495
e   0.9961179      Incl.  164.48892     +0.58708938     -0.20223473
From 73 observations 2009 Nov. 21-2010 Jan. 4, mean residual 0".61.
   (1/a)org.= +0.000887, (1/a)fut.= +0.000929 (+/-0.000668), Q= 4.
   The comet has passed 1.97 AU from Saturn on 2007 May 18 and
   will pass 2.90 AU from Jupiter on 2011 Oct. 29 UT.

NAKANO
         **** Don't distribute anyone except personal use only ****
           (C) Copyright 2010 Orbit.Astro.Assoc./ComputingSection
write mail from CFAD0::NAKANO on 2010-01-27 08:20:36(JST).
 
    C/2009 W2 (Boattini)
T 2010 Apr. 2.51394 TT                                  Nakano
q   6.9411326            (2000.0)            P               Q
                   Peri.  118.85349     +0.17526155     +0.98052656
                   Node   199.37339     +0.78434848     -0.08466500
e   1.0            Incl.  164.50770     +0.59504693     -0.17719903
From 48 observations 2009 Nov. 21-27.
NAKANO
         **** Don't distribute anyone except personal use only ****
           (C) Copyright 2009 Orbit.Astro.Assoc./ComputingSection
write mail from CFAD0::NAKANO on 2009-12-12 08:25:42(JST).

戻ります。