73P-BT (Schwassmann-Wachmann) 
   From 23 observations 2017 Feb. 10-11.(8) Kinoshita
   Epoch = 2017 Mar. 28.0 TT = JDT 2457840.5 
       T = 2017 Mar. 26.45755 TT            peri.= 215.01715 
       e = 0.6855115                        node =  69.19636 (2000.0) 
       q = 0.9065915 AU                     incl.=  12.00977 
   a = 2.8827488 AU          n = 0.20136958         P = 4.89 years 
  m1 = 11.5 + 5log(delta) + 15.0log(r) 
  A. Node = E:12/01.6 JST  O:2018/03/11.0 JST  3.484 AU 
  D. Node = E:05/31.0 JST  O:2017/03/02.0 JST  0.979 AU 

2017   JST     R.A. (2000) D.C.    Delta     r    Elong. Phase   dMo./P.A.   Tail/P.A. M-O Ag   m1     H/A
02/26 05:20   19 28.72  -21 09.7   1.376   1.000   46.6   46.0   78.1/ 89.6   2.8/262   37 29  12.2  +13/308
02/27 05:20   19 34.30  -21 08.9   1.374   0.994   46.3   46.1   78.2/ 89.1   2.9/261   49  0  12.2  +12/307
02/28 05:20   19 39.90  -21 07.4   1.373   0.988   46.0   46.1   78.4/ 88.6   2.9/261   62  1  12.1  +12/307
03/01 05:20   19 45.49  -21 05.2   1.372   0.983   45.7   46.2   78.5/ 88.1   2.9/260   75  2  12.1  +12/307
03/02 05:20   19 51.10  -21 02.2   1.371   0.977   45.4   46.3   78.6/ 87.6   2.9/259   88  3  12.0  +12/306
03/03 05:20   19 56.70  -20 58.6   1.371   0.972   45.1   46.3   78.6/ 87.1   2.9/259  100  5  12.0  +11/306
03/04 05:20   20 02.31  -20 54.3   1.371   0.967   44.8   46.3   78.7/ 86.6   2.9/258  113  6  12.0  +11/306
03/05 05:20   20 07.91  -20 49.3   1.371   0.962   44.5   46.3   78.7/ 86.1   2.9/257  126  7  11.9  +11/305
03/06 05:20   20 13.50  -20 43.6   1.371   0.957   44.3   46.3   78.7/ 85.6   2.9/257  139  8  11.9  +11/305
03/07 05:20   20 19.09  -20 37.3   1.372   0.952   44.0   46.3   78.6/ 85.1   2.9/256  152  9  11.9  +11/305
03/08 05:20   20 24.67  -20 30.2   1.373   0.948   43.7   46.3   78.6/ 84.6   2.9/255  164 10  11.8  +10/304
03/09 05:20   20 30.23  -20 22.5   1.374   0.944   43.4   46.3   78.5/ 84.1   2.9/255  175 11  11.8  +10/304
03/10 05:20   20 35.78  -20 14.1   1.376   0.940   43.1   46.2   78.4/ 83.6   2.9/254  170 12  11.8  +10/304
03/11 05:20   20 41.31  -20 05.0   1.377   0.936   42.8   46.1   78.3/ 83.1   2.9/253  158 13  11.8  +10/303
03/12 05:20   20 46.83  -19 55.3   1.380   0.932   42.5   46.1   78.2/ 82.6   2.8/253  147 14  11.7  +10/303
03/13 05:20   20 52.32  -19 45.0   1.382   0.929   42.2   46.0   78.0/ 82.2   2.8/252  135 15  11.7  +10/302
03/14 05:20   20 57.78  -19 34.0   1.384   0.926   41.9   45.8   77.8/ 81.7   2.8/251  124 16  11.7   +9/302
03/15 05:20   21 03.22  -19 22.5   1.387   0.923   41.7   45.7   77.6/ 81.2   2.8/251  112 17  11.7   +9/302
03/16 05:20   21 08.64  -19 10.3   1.390   0.920   41.4   45.6   77.4/ 80.7   2.8/250  101 18  11.7   +9/301
03/17 05:20   21 14.02  -18 57.6   1.394   0.918   41.1   45.4   77.1/ 80.3   2.8/249   91 19  11.7   +9/301
03/18 05:20   21 19.37  -18 44.3   1.397   0.916   40.8   45.3   76.9/ 79.8   2.8/249   80 20  11.7   +9/301
03/19 05:20   21 24.69  -18 30.4   1.401   0.914   40.6   45.1   76.6/ 79.4   2.8/248   70 20  11.6   +9/300
03/20 05:20   21 29.97  -18 16.1   1.405   0.912   40.3   44.9   76.3/ 79.0   2.7/248   59 21  11.6   +9/300
03/21 05:20   21 35.22  -18 01.2   1.409   0.910   40.1   44.7   76.0/ 78.5   2.7/247   48 22  11.6   +9/299
03/22 05:20   21 40.43  -17 45.8   1.414   0.909   39.8   44.5   75.6/ 78.1   2.7/247   38 23  11.6   +9/299
03/23 05:20   21 45.61  -17 29.9   1.418   0.908   39.6   44.3   75.3/ 77.7   2.7/246   27 24  11.6   +9/299
03/24 05:20   21 50.74  -17 13.6   1.423   0.907   39.3   44.1   74.9/ 77.3   2.7/245   16 25  11.6   +9/298
03/25 05:20   21 55.83  -16 56.9   1.428   0.907   39.1   43.9   74.5/ 76.9   2.6/245    6 26  11.6   +9/298
03/26 05:10   22 00.85  -16 39.9   1.433   0.907   38.8   43.6   74.1/ 76.5   2.6/244   10 27  11.6   +7/296
inserted by FC2 system