104P/Kowal 2

Epoch 1972 July 22.0 TT = JDT 2441520.5  

T 1972 Aug. 4.88468 TT                                  Nakano

q   1.5276249            (2000.0)            P               Q

n   0.15279658     Peri.  189.26185     +0.22708364     -0.94071901

a   3.4651893      Node   247.94301     +0.91001498     +0.29711075

e   0.5591511      Incl.   15.77441     +0.34685121     -0.16362444

P   6.45 (+/- 0.04 day)

From 106 observations 1973-1992, weighting mean residual 2".01.

   Nongravitational parameters A1 = -2.70 +/- 0.29, A2 = +0.1298 +/- 0.1116.

Residuals in seconds of arc 

1973/                     911216 897  0.1+  0.9+    920104 411  0.1-  0.2-  

730111 500 11.8- 86.0-    911217 372  2.6-  0.2+    920104 411  0.5+  0.8+  

730112 500 11.5- 11.3-    911217 372  1.6-  0.6+    920104 411  1.7-  0.5-  

730113 500 15.4+ 49.4+    911217 372  1.2-  0.7+    920104 411  0.2+  0.1-  

1979/                     911217 372 (3.6-  0.3-)   920104 411  1.0-  0.6-  

790127 675 (3.0+  3.7+)   911218 411  1.4-  0.3+    920104 411  0.1+  1.1-  

790128 675 (0.8-  4.0+)   911218 411  0.8+  0.4+    920106 801  0.5-  0.6-  

790129 675 (0.2+  4.6+)   911218 411  0.9-  2.0+    920106 801  1.0+  0.5-  

790201 372 (2.7-  5.1+)   911218 411  0.6+  1.1+    920107 657  1.2+  1.3-  

790201 372  1.1-  3.0+    911218 411 (2.8-  1.8+)   920107 657  1.8+  0.8-  

790216 372 (4.0+  4.5+)   911218 411  2.5-  1.3+    920107 657  1.9+  0.9-  

790216 323  1.7+  0.7+    911219 411 (0.4-  4.1+)   920110 411  0.3-  1.2+  

790222 323  0.4+  0.6+    911219 411  0.6-  0.6+    920110 411  1.0-  2.0+  

790223 801  0.2-  0.2-    911219 411  2.4-  0.7-    920110 411  0.7+  0.6+  

790226 323  2.8-  1.1-    911219 411  0.2+  0.5-    920205 801  0.3+  0.0   

790227 372  1.3-  1.8- Y  911219 411  0.5+  0.3-    920205 801  0.2+  0.0   

790228 372  1.8+  0.8-    911221 413  1.3+  0.9-    920207 801  0.5+  0.4-  

790301 675  1.2+  1.1-    911221 413  1.5+  1.1-    920207 801  0.4+  0.5-  

790318 323  0.2+  1.6+    911229 372  0.3+  0.2-    920207 658  0.3-  1.7-  

790321 372 (0.6+  4.9-)   911229 372  0.3-  1.5-    920207 658  0.7-  0.5-  

790321 372 (1.3+  4.8-)   911230 411  0.4+  0.7+    920210 897  0.0   0.1+  

790323 675 (1.7+  3.7-)   911230 411  0.3+  2.3+    920222 411  0.9+  0.5-  

790328 801(10.3-  2.1-)   911230 411  1.0-  0.7+    920222 411  1.1+  0.2-  

1991/                     911230 411  0.0   0.2-    920222 411  0.2+  0.0   

911212 875  1.6-  1.8-    911230 411 (0.8-  2.8+)   920222 411  0.4+  0.6-  

911213 875  0.1-  1.3-    911230 411  1.0+  0.6+    920301 801  1.0+  1.5+  

911213 875 (2.8-  3.8-)   911230 372  0.3-  1.9-    920301 801  0.8+  2.1+  

911213 875  1.3-  1.2-    1992/                     920306 411  1.3-  2.2+  

911215 411  1.0-  1.3+    920101 801  1.6+  1.2-    920312 658  1.3-  0.3+  

911215 411  0.6+  2.3-    920101 801  0.8-  0.3-    920312 658  1.2-  0.4+  

911215 411 (3.5-  0.1+)   920102 411  0.1+  0.9+    920312 658  1.4-  0.4+  

911215 411  1.3-  1.8-    920102 411  1.1+  1.4+    920313 658  0.9-  0.4+  

911215 411  1.1+  0.8-    920102 411  0.9+  0.6+    920313 658  0.8-  0.4+  

911216 381  1.4+  0.1-    920102 411  0.5-  0.2+    920313 658  0.8-  0.6+  

911216 896 (3.2-  2.7-)   920102 411  0.1+  1.7+    920322 897  0.7-  1.3-  

911216 896 (2.8-  0.1+)   920102 411  1.1+  0.3+    920322 411  0.0   0.5-  

911216 411  1.0-  1.5-    920102 897  1.2+  0.7+    920322 411  0.2+  0.5+  

911216 896 (2.6+  9.1-)   920102 897  1.8+  1.7-    920322 897  0.7+  0.6-  

911216 411 (3.6-  2.5+)   920103 372  0.6-  0.0     920322 411  0.2+  0.4+  

911216 897  1.6+  0.8-    920103 372  0.7-  1.6+    920401 801  0.5+  0.3+  

911216 411  2.3-  0.5-    920104 373  1.7+  0.4-    920401 801  0.1-  0.1+  

911216 411  1.1-  1.2-    920104 373  1.4+  0.3-    920430 801  0.2-  0.1+  

911216 411  1.2-  0.9+    920104 411  1.5+  0.2+    920430 801  0.2+  1.2-  



NAKANO

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write mail from CFAD0::NAKANO on 2004-01-21 21:27:50(JST).

 



◎104P/Kowal 2 = Boethin's comet in 1973



  詳しくは,IAUC8255に出ていますが,1973年にボ−シンから発見が報告され

ていた10等級の彗星と104Pとの連結軌道です.下にある光度予報は,現在,使

用されている光度式からのものです.近日点通過後の光度式からの1973年の光

度は,このとき,16等級(近日点通過前の光度式からは15等級)でした.



 104P/Kowal 2

Epoch 1972 July 22.0 TT = JDT 2441520.5  

T 1972 Aug. 4.88468 TT                                  Nakano

q   1.5276249            (2000.0)            P               Q

n   0.15279658     Peri.  189.26185     +0.22708364     -0.94071901

a   3.4651893      Node   247.94301     +0.91001498     +0.29711075

e   0.5591511      Incl.   15.77441     +0.34685121     -0.16362444

P   6.45 (+/- 0.04 day)

From 106 observations 1973-1992, weighting mean residual 2".01.

   Nongravitational parameters A1 = -2.70 +/- 0.29, A2 = +0.1298 +/- 0.1116.



Date/  0h TT  R.A.(2000) Decl.     Delta   r     Daily motion  Mag.  Moon Age

                h  m       。  ,                      ,  / PA 。  m1      。

1972 Jan.  4  21 35.80  -00 58.8   3.122  2.514    24.5 /  77  17.7  168  .89

          14  21 51.67  -00 02.3   3.144  2.452    26.0 /  75  17.6   67  .07

          24  22 08.44  +01 05.0   3.154  2.389    27.5 /  74  17.4   67  .57

     Feb.  3  22 26.03  +02 22.5   3.153  2.327    28.9 /  72  17.3  163  .88

          13  22 44.42  +03 49.3   3.141  2.265    30.2 /  71  17.1   47  .05

          23  23 03.60  +05 24.8   3.119  2.203    31.5 /  71  16.9   91  .64

     Mar.  4  23 23.58  +07 07.6   3.086  2.142    32.8 /  70  16.7  147  .86

          14  23 44.41  +08 56.6   3.046  2.081    34.1 /  70  16.6   27  .03

          24  00 06.14  +10 50.3   2.998  2.021    35.3 /  70  16.4  111  .70

     Apr.  3  00 28.84  +12 46.7   2.944  1.963    36.5 /  71  16.2  132  .85

          13  00 52.60  +14 43.8   2.885  1.906    37.8 /  71  15.9    7  .01

          23  01 17.52  +16 39.1   2.823  1.851    39.0 /  73  15.7  128  .74

     May   3  01 43.66  +18 29.6   2.759  1.799    40.2 /  74  15.5  118  .83

          13  02 11.10  +20 12.2   2.694  1.750    41.3 /  76  15.3   13  .00

          23  02 39.87  +21 43.1   2.630  1.704    42.4 /  78  15.1  142  .77

     June  2  03 09.93  +22 58.5   2.567  1.663    43.4 /  81  14.9  104  .79

          12  03 41.18  +23 54.5   2.508  1.625    44.2 /  84  14.7   31  .00

          22  04 13.40  +24 27.5   2.451  1.594    44.9 /  87  14.6  152  .80

     July  2  04 46.31  +24 34.4   2.399  1.568    45.4 /  91  14.4   90  .73

          12  05 19.54  +24 13.3   2.351  1.548    45.7 /  95  14.3   45  .02

          22  05 52.66  +23 23.3   2.308  1.534    45.8 /  98  14.2  162  .82

     Aug.  1  06 25.26  +22 05.1   2.270  1.528    45.6 / 102  14.2   74  .65

                    m1 = 10.0+5log(delta)+13.0log(r)



          11  06 56.99  +20 20.6   2.236  1.529    45.1 / 105  15.0   57  .04

          21  07 27.53  +18 12.7   2.206  1.537    44.3 / 108  15.0  171  .85

          31  07 56.67  +15 45.3   2.179  1.551    43.3 / 111  15.1   57  .56

     Sept.10  08 24.30  +13 02.4   2.154  1.573    42.0 / 114  15.1   69  .05

          20  08 50.33  +10 08.2   2.130  1.600    40.5 / 116  15.2  173  .88

          30  09 14.74  +07 06.6   2.106  1.633    38.8 / 118  15.3   40  .48

     Oct. 10  09 37.55  +04 01.0   2.080  1.671    36.8 / 120  15.4   81  .07

          20  09 58.72  +00 54.8   2.053  1.714    34.6 / 122  15.6  159  .91

          30  10 18.26  -02 09.5   2.022  1.761    32.2 / 124  15.7   22  .41

     Nov.  9  10 36.13  -05 09.5   1.988  1.811    29.6 / 126  15.9   96  .08

          19  10 52.23  -08 03.3   1.949  1.863    26.8 / 129  16.0  138  .94

          29  11 06.43  -10 48.9   1.906  1.919    23.6 / 132  16.1   11  .37

     Dec.  9  11 18.57  -13 24.7   1.858  1.976    20.2 / 136  16.3  115  .09

          19  11 28.38  -15 48.5   1.808  2.034    16.6 / 141  16.4  111  .97

          29  11 35.63  -17 57.9   1.755  2.094    12.8 / 151  16.5   27  .35

1973 Jan.  8  11 40.01  -19 50.0   1.703  2.155     9.2 / 169  16.7  140  .11

          18  11 41.30  -21 20.8   1.654  2.217     7.0 / 202  16.8   79  .99

          28  11 39.41  -22 25.7   1.612  2.279     7.6 / 243  16.9   54  .34

     Feb.  7  11 34.48  -22 59.9   1.581  2.341    10.3 / 270  17.0  161  .14

                    m1 = 10.5+5log(delta)+15.0log(r)

NAKANO

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write mail from CFAD0::NAKANO on 2003-12-16 03:03:43(JST).

 

 104P/Kowal 2

Epoch 2004 Apr. 25.0 TT = JDT 2453120.5  

T 2004 May  9.16101 TT                                  Nakano

q   1.3958749            (2000.0)            P               Q

n   0.15954736     Peri.  192.04078     +0.21267061     -0.94613415

a   3.3667405      Node   246.08614     +0.91719583     +0.27944912

e   0.5853928      Incl.   15.48936     +0.33693176     -0.16351870

P   6.18

From 425 observations 1991-2003, mean residual 0".86.

   Nongravitational parameters A1 = +0.61 +/- 0.09, A2 = -0.5150 +/- 0.0021.

   Systematic tendency in late 1997 and 1998 observations.

   Comet will pass 0.05 AU from the Earth on 2049 Nov. 8.



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 104P/Kowal 2 

Epoch 2004 Apr. 25.0 TT = JDT 2453120.5  

T 2004 May 9.19744 TT                                   Nakano

q   1.3959602            (2000.0)            P               Q

n   0.15958362     Peri.  192.00989     +0.21319383     -0.94601681

a   3.3662304      Node   246.08537     +0.91704239     +0.27995523

e   0.5853046      Incl.   15.48935     +0.33701877     -0.16333176

P   6.18

From 454 observations 1991-1998, mean residual 0".84.  Nongravitational

   parameters A1 = +5.05 +/- 0.23, A2 = -0.4594 +/- 0.0926.

NAKANO

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 104P/Kowal 2

Epoch 1998 Mar. 8.0 TT = JDT 2450880.5

T 1998 Mar. 2.15386 TT                                  Nakano

q   1.3966189            (2000.0)            P               Q

n   0.15952822     Peri.  191.89333     +0.21406604     -0.94579057

a   3.3670097      Node   246.14716     +0.91668308     +0.28088345

e   0.5852050      Incl.   15.48913     +0.33744312     -0.16304810

P   6.18

From 427 observations 1991-1998, mean residual 0".93.  Nongravitational

   parameters A1 = +4.64 +/- 0.26, A2 = -0.3606 +/- 0.1004.

 



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