261P/Larson 
   From 563 observations 2005 July 3-2019 Aug. 13.(3) Kinoshita
   Epoch = 2019 Nov. 13.0 TT = JDT 2458800.5 
       T = 2019 June 18.69385 TT            peri.=  67.11950 
       e = 0.4228575                        node = 291.16528 (2000.0) 
       q = 2.0134330 AU                     incl.=   6.07609 
   a = 3.4886240 AU          n = 0.15125956         P = 6.52 years 
  m1 = 9.0 + 5log(delta) + 20.0log(r) 
  A. Node = E:07/14.5 JST  O:2018/12/13.1 JST  2.460 AU 
  D. Node = E:01/12.6 JST  O:2020/08/11.6 JST  3.429 AU 

2019   JST     R.A. (2000) D.C.    Delta     r    Elong. Phase   dMo./P.A.   Tail/P.A. M-O Ag   m1     H/A
11/03 23:50   03 34.42  +28 41.4   1.316   2.275  160.2    8.5   11.6/251.2   0.6/229  116  7  16.7  +77/296
11/04 23:50   03 33.58  +28 37.6   1.316   2.278  161.3    8.0   11.8/250.7   0.6/228  104  8  16.7  +78/299
11/05 23:50   03 32.73  +28 33.7   1.317   2.282  162.3    7.6   12.0/250.1   0.5/226   92  8  16.8  +79/302
11/06 23:50   03 31.88  +28 29.6   1.318   2.285  163.4    7.1   12.2/249.6   0.5/223   81  9  16.8  +80/306
11/07 23:50   03 31.01  +28 25.4   1.318   2.288  164.4    6.7   12.3/249.0   0.5/221   69 10  16.8  +80/310
11/08 23:50   03 30.14  +28 20.9   1.320   2.292  165.4    6.3   12.5/248.5   0.4/218   57 11  16.8  +81/315
11/09 23:40   03 29.27  +28 16.4   1.321   2.295  166.3    5.9   12.6/248.0   0.4/215   46 12  16.8  +80/310
11/10 23:40   03 28.39  +28 11.7   1.323   2.299  167.2    5.5   12.7/247.5   0.4/211   34 13  16.8  +81/315
11/11 23:40   03 27.50  +28 06.8   1.325   2.302  168.0    5.1   12.7/246.9   0.4/207   23 14  16.9  +81/321
11/12 23:40   03 26.62  +28 01.8   1.327   2.306  168.8    4.8   12.8/246.4   0.3/203   14 15  16.9  +82/328
11/13 23:40   03 25.73  +27 56.7   1.329   2.309  169.5    4.5   12.8/245.8   0.3/197   14 16  16.9  +82/335
11/14 23:30   03 24.86  +27 51.5   1.332   2.313  170.1    4.2   12.8/245.3   0.3/191   23 17  16.9  +82/328
11/15 23:30   03 23.98  +27 46.1   1.335   2.316  170.6    4.0   12.8/244.8   0.3/184   35 18  16.9  +82/335
11/16 23:30   03 23.10  +27 40.6   1.338   2.320  171.0    3.8   12.8/244.2   0.3/177   47 19  16.9  +82/342
11/17 23:50   03 22.22  +27 34.9   1.342   2.324  171.2    3.7   12.8/243.6   0.3/169   61 20  17.0  +82/ 24
11/18 23:50   03 21.36  +27 29.2   1.345   2.327  171.2    3.7   12.7/243.0   0.3/161   74 21  17.0  +81/ 30
11/19 23:40   03 20.52  +27 23.5   1.349   2.331  171.1    3.8   12.7/242.4   0.3/153   88 22  17.0  +82/ 22
11/20 23:40   03 19.67  +27 17.6   1.354   2.334  170.8    3.9   12.6/241.8   0.3/145  102 23  17.0  +81/ 29
11/21 23:40   03 18.84  +27 11.7   1.358   2.338  170.4    4.0   12.5/241.2   0.3/138  116 24  17.0  +81/ 34
11/22 23:40   03 18.02  +27 05.7   1.363   2.342  169.9    4.3   12.3/240.6   0.3/132  130 25  17.1  +80/ 39
11/23 23:30   03 17.23  +26 59.7   1.368   2.345  169.2    4.5   12.2/239.9   0.3/126  144 26  17.1  +81/ 33
11/24 23:30   03 16.44  +26 53.5   1.373   2.349  168.5    4.8   12.0/239.3   0.3/121  157 27  17.1  +80/ 38
11/25 23:30   03 15.67  +26 47.4   1.379   2.353  167.6    5.2   11.9/238.6   0.3/117  167 28  17.1  +79/ 42
11/26 23:30   03 14.91  +26 41.2   1.385   2.356  166.8    5.5   11.7/237.8   0.4/113  165  0  17.2  +78/ 46
11/27 23:20   03 14.18  +26 35.0   1.391   2.360  165.9    5.9   11.5/237.1   0.4/110  154  1  17.2  +79/ 41
11/28 23:20   03 13.47  +26 28.8   1.397   2.364  164.9    6.2   11.2/236.3   0.4/107  141  2  17.2  +78/ 45
11/29 23:20   03 12.77  +26 22.5   1.404   2.368  163.9    6.6   11.0/235.5   0.4/104  128  3  17.2  +78/ 48
11/30 23:20   03 12.10  +26 16.3   1.411   2.371  162.9    7.0   10.7/234.6   0.5/102  116  4  17.2  +77/ 51
12/01 23:10   03 11.45  +26 10.1   1.418   2.375  161.9    7.4   10.5/233.7   0.5/100  103  5  17.3  +78/ 47
12/02 23:10   03 10.82  +26 03.9   1.425   2.379  160.9    7.8   10.2/232.8   0.5/ 98   91  6  17.3  +77/ 50
12/03 23:10   03 10.22  +25 57.7   1.433   2.382  159.8    8.2    9.9/231.8   0.5/ 97   79  7  17.3  +76/ 53
inserted by FC2 system