C/1999 T1 (McNaught-Hartley)
Epoch 2000 Dec. 2.0 TT = JDT 2451880.5
T 2000 Dec. 13.4703 TT Marsden
q 1.171704 (2000.0) P Q
z +0.000021 Peri. 344.7572 -0.9658973 -0.2553886
+/-0.000005 Node 182.4823 +0.1065947 -0.5423231
e 0.999975 Incl. 79.9749 -0.2359660 +0.8004138
>From 189 observations 1999 Oct. 7-2000 Nov. 2, mean residual 0".7.
Orbital elements from MPC 41524.
C/1999 T1 (McNaught-Hartley) Elements MPC 41524
Date TT R. A. (2000) Decl. Delta r Elong. Phase Dm1
2001 01 12 15 27.14 -04 12.8 1.369 1.261 62.3 43.7 8-9
2001 01 14 15 32.74 -02 30.1 1.356 1.273 63.6 43.8
2001 01 16 15 38.33 -00 44.8 1.344 1.285 64.9 43.9
2001 01 18 15 43.93 +01 03.1 1.332 1.298 66.2 43.9
2001 01 20 15 49.53 +02 53.4 1.322 1.312 67.5 43.9
2001 01 22 15 55.12 +04 45.9 1.313 1.326 68.8 43.8
2001 01 24 16 00.70 +06 40.4 1.305 1.341 70.1 43.7
2001 01 26 16 06.28 +08 36.7 1.298 1.356 71.4 43.5
2001 01 28 16 11.85 +10 34.5 1.293 1.372 72.6 43.3
2001 01 30 16 17.40 +12 33.4 1.290 1.388 73.8 43.0
2001 02 01 16 22.94 +14 33.3 1.287 1.404 75.0 42.7
2001 02 03 16 28.46 +16 33.7 1.287 1.421 76.1 42.3
2001 02 05 16 33.95 +18 34.3 1.288 1.438 77.2 42.0
2001 02 07 16 39.42 +20 34.9 1.290 1.456 78.3 41.5
2001 02 09 16 44.87 +22 34.9 1.294 1.474 79.3 41.1
2001 02 11 16 50.28 +24 34.2 1.300 1.492 80.2 40.7
2001 02 13 16 55.66 +26 32.4 1.307 1.511 81.1 40.2
2001 02 15 17 00.99 +28 29.2 1.315 1.530 81.9 39.7
2001 02 17 17 06.29 +30 24.4 1.325 1.549 82.7 39.3
2001 02 19 17 11.53 +32 17.6 1.337 1.568 83.4 38.8
2001 02 21 17 16.72 +34 08.7 1.350 1.588 84.0 38.3
C/1999 T2 (LINEAR)
Epoch 2000 Dec. 2.0 TT = JDT 2451880.5
T 2000 Nov. 24.4679 TT Nakano
q 3.037376 (2000.0) P Q
z -0.000686 Peri. 104.6690 -0.1557069 -0.9582704
+/-0.000002 Node 14.8800 -0.7263515 -0.0534085
e 1.002085 Incl. 111.0020 +0.6694541 -0.2808297
>From 563 observations 1999 July 22-2000 Nov. 5, mean residual 0".6.
Orbital elements from MPC 41525.
C/1999 T2 (LINEAR) Elements MPC 41525
Date TT R. A. (2000) Decl. Delta r Elong. Phase Dm1
2001 01 12 17 04.93 +24 51.1 3.464 3.075 59.0 15.9 13-14
2001 01 14 17 05.15 +24 53.1 3.449 3.078 60.0 16.1
2001 01 16 17 05.33 +24 55.8 3.433 3.081 61.1 16.2
2001 01 18 17 05.44 +24 59.2 3.417 3.085 62.3 16.4
2001 01 20 17 05.51 +25 03.5 3.400 3.088 63.4 16.6
2001 01 22 17 05.51 +25 08.4 3.382 3.092 64.7 16.7
2001 01 24 17 05.46 +25 14.2 3.364 3.095 65.9 16.9
2001 01 26 17 05.33 +25 20.7 3.345 3.099 67.2 17.0
2001 01 28 17 05.14 +25 27.9 3.326 3.103 68.5 17.2
2001 01 30 17 04.87 +25 35.8 3.306 3.107 69.9 17.3
2001 02 01 17 04.53 +25 44.5 3.285 3.112 71.2 17.4
2001 02 03 17 04.11 +25 53.8 3.264 3.116 72.7 17.6
2001 02 05 17 03.60 +26 03.9 3.243 3.120 74.1 17.7
2001 02 07 17 03.00 +26 14.6 3.221 3.125 75.6 17.8
2001 02 09 17 02.32 +26 26.0 3.199 3.130 77.1 17.9
2001 02 11 17 01.53 +26 38.0 3.176 3.134 78.6 18.0
2001 02 13 17 00.65 +26 50.6 3.154 3.139 80.2 18.1
2001 02 15 16 59.66 +27 03.9 3.131 3.144 81.7 18.1
2001 02 17 16 58.56 +27 17.8 3.107 3.149 83.3 18.2
2001 02 19 16 57.34 +27 32.2 3.084 3.155 85.0 18.2
2001 02 21 16 56.01 +27 47.1 3.061 3.160 86.6 18.2
C/1999 U4 (Catalina-Skiff)
Epoch 2001 Oct. 18.0 TT = JDT 2452200.5
T 2001 Oct. 28.4551 TT Nakano
q 4.915282 (2000.0) P Q
z -0.001570 Peri. 77.5128 -0.1388410 -0.8965977
+/-0.000005 Node 32.2887 +0.2672306 -0.4427989
e 1.007716 Incl. 51.9260 +0.9535780 -0.0064547
>From 204 observations 1999 Sept. 18-2000 Nov. 5, mean residual 0".6.
Orbital elements from MPC 41525.
C/1999 U4 (Catalina-Skiff) Elements MPC 41525
Date TT R. A. (2000) Decl. Delta r Elong. Phase Dm1
2001 01 12 02 17.06 +51 56.4 4.933 5.400 113.4 9.6 14-15
2001 01 14 02 16.81 +51 53.6 4.951 5.393 111.8 9.8
2001 01 16 02 16.65 +51 50.8 4.969 5.387 110.1 9.9
2001 01 18 02 16.57 +51 48.2 4.987 5.381 108.5 10.0
2001 01 20 02 16.58 +51 45.7 5.006 5.375 106.9 10.1
2001 01 22 02 16.67 +51 43.4 5.024 5.369 105.3 10.2
2001 01 24 02 16.85 +51 41.3 5.044 5.362 103.7 10.3
2001 01 26 02 17.10 +51 39.4 5.063 5.356 102.1 10.4
2001 01 28 02 17.44 +51 37.8 5.083 5.350 100.5 10.4
2001 01 30 02 17.86 +51 36.3 5.103 5.344 98.9 10.5
2001 02 01 02 18.36 +51 35.1 5.123 5.338 97.3 10.5
2001 02 03 02 18.94 +51 34.2 5.143 5.332 95.7 10.6
2001 02 05 02 19.59 +51 33.5 5.163 5.327 94.2 10.6
2001 02 07 02 20.31 +51 33.1 5.183 5.321 92.6 10.7
2001 02 09 02 21.11 +51 33.0 5.204 5.315 91.1 10.7
2001 02 11 02 21.98 +51 33.2 5.224 5.309 89.6 10.7
2001 02 13 02 22.93 +51 33.6 5.244 5.303 88.0 10.7
2001 02 15 02 23.94 +51 34.4 5.265 5.298 86.5 10.7
2001 02 17 02 25.02 +51 35.4 5.285 5.292 85.0 10.7
2001 02 19 02 26.17 +51 36.7 5.305 5.286 83.6 10.7
2001 02 21 02 27.38 +51 38.4 5.325 5.281 82.1 10.7
C/1999 Y1 (LINEAR)
Epoch 2001 Apr. 1.0 TT = JDT 2452000.5
T 2001 Mar. 24.1114 TT Nakano
q 3.091180 (2000.0) P Q
z -0.000201 Peri. 184.2856 +0.9933702 +0.0346608
+/-0.000001 Node 188.8842 +0.1146743 -0.3658624
e 1.000622 Incl. 134.7868 -0.0080901 -0.9300233
>From 526 observations 1999 Oct. 29-2000 Nov. 4, mean residual 0".5.
Orbital elements from MPC 41525.
C/1999 Y1 (LINEAR) Elements MPC 41525
Date TT R. A. (2000) Decl. Delta r Elong. Phase Dm1
2001 01 12 23 50.72 +08 53.1 3.369 3.168 69.9 16.9 13-14
2001 01 14 23 51.02 +08 27.6 3.403 3.164 67.7 16.7
2001 01 16 23 51.39 +08 03.0 3.437 3.160 65.6 16.5
2001 01 18 23 51.81 +07 39.4 3.470 3.156 63.5 16.2
2001 01 20 23 52.28 +07 16.7 3.502 3.152 61.4 15.9
2001 01 22 23 52.81 +06 54.9 3.534 3.148 59.4 15.6
2001 01 24 23 53.38 +06 34.0 3.565 3.145 57.3 15.3
2001 01 26 23 54.00 +06 13.8 3.596 3.141 55.3 14.9
2001 01 28 23 54.66 +05 54.4 3.626 3.138 53.2 14.6
2001 01 30 23 55.37 +05 35.8 3.656 3.135 51.2 14.2
2001 02 01 23 56.11 +05 17.8 3.684 3.131 49.2 13.8
2001 02 03 23 56.89 +05 00.5 3.712 3.128 47.3 13.4
2001 02 05 23 57.71 +04 43.9 3.739 3.125 45.3 13.0
2001 02 07 23 58.55 +04 27.8 3.765 3.123 43.3 12.5
2001 02 09 23 59.43 +04 12.3 3.791 3.120 41.4 12.1
2001 02 11 00 00.34 +03 57.3 3.815 3.117 39.5 11.6
2001 02 13 00 01.27 +03 42.8 3.839 3.115 37.6 11.1
2001 02 15 00 02.23 +03 28.7 3.861 3.112 35.6 10.7
2001 02 17 00 03.22 +03 15.2 3.883 3.110 33.7 10.2
2001 02 19 00 04.23 +03 02.0 3.904 3.108 31.9 9.7
2001 02 21 00 05.26 +02 49.2 3.923 3.106 30.0 9.2
C/2000 SV74 (LINEAR)
Epoch 2002 May 6.0 TT = JDT 2452400.5
T 2002 Apr. 30.4781 TT Nakano
q 3.541380 (2000.0) P Q
z -0.001432 Peri. 76.2330 +0.1157169 -0.9108560
+/-0.000062 Node 24.1852 -0.0770646 -0.4058804
e 1.005072 Incl. 75.2412 +0.9902882 +0.0748494
>From 134 observations 2000 Sept. 5-Dec. 3, mean residual 0".6.
Orbital elements from MPC 41716.
C/2000 SV74 (LINEAR) Elements MPC 41716
Date TT R. A. (2000) Decl. Delta r Elong. Phase Dm1
2001 01 12 00 48.90 +09 08.5 5.483 5.451 83.0 10.3 14-15
2001 01 14 00 48.92 +09 18.2 5.505 5.439 81.0 10.3
2001 01 16 00 48.99 +09 28.2 5.527 5.427 79.1 10.3
2001 01 18 00 49.11 +09 38.4 5.548 5.414 77.1 10.2
2001 01 20 00 49.27 +09 48.8 5.569 5.402 75.2 10.1
2001 01 22 00 49.48 +09 59.4 5.589 5.390 73.3 10.1
2001 01 24 00 49.72 +10 10.2 5.610 5.377 71.4 10.0
2001 01 26 00 50.01 +10 21.2 5.630 5.365 69.5 9.9
2001 01 28 00 50.34 +10 32.5 5.649 5.353 67.6 9.8
2001 01 30 00 50.71 +10 43.9 5.669 5.341 65.8 9.7
2001 02 01 00 51.12 +10 55.6 5.687 5.328 63.9 9.6
2001 02 03 00 51.57 +11 07.5 5.705 5.316 62.1 9.4
2001 02 05 00 52.06 +11 19.5 5.723 5.304 60.3 9.3
2001 02 07 00 52.58 +11 31.8 5.740 5.292 58.5 9.1
2001 02 09 00 53.13 +11 44.2 5.757 5.279 56.7 9.0
2001 02 11 00 53.72 +11 56.9 5.773 5.267 54.9 8.8
2001 02 13 00 54.35 +12 09.7 5.788 5.255 53.1 8.6
2001 02 15 00 55.00 +12 22.8 5.803 5.243 51.3 8.5
2001 02 17 00 55.69 +12 36.0 5.817 5.231 49.6 8.3
2001 02 19 00 56.41 +12 49.4 5.830 5.219 47.9 8.1
2001 02 21 00 57.16 +13 03.0 5.843 5.207 46.1 7.9
C/2000 W1 (Utsunomiya-Jones)
T 2000 Dec. 26.5593 TT Nakano
q 0.321181 (2000.0) P Q
Peri. 51.5090 +0.7489713 -0.6595641
Node 10.7660 -0.6625988 -0.7458489
e 1.0 Incl. 160.1655 +0.0021897 -0.0931913
>From 151 observations 2000 Nov. 26-Dec. 22. Orbital elements from MPC 41898.
C/2000 W1 (Utsunomiya-Jones) Elements MPC 41898
Date TT R. A. (2000) Decl. Delta r Elong. Phase Dm1
2001 01 12 18 09.04 -17 37.2 1.372 0.567 20.5 37.4 9-10
2001 01 14 18 03.68 -17 40.1 1.366 0.610 23.7 40.4
2001 01 16 17 58.53 -17 43.3 1.356 0.653 26.8 42.9
2001 01 18 17 53.52 -17 46.8 1.344 0.696 30.0 45.0
2001 01 20 17 48.62 -17 50.5 1.330 0.738 33.1 46.8
2001 01 22 17 43.76 -17 54.1 1.314 0.781 36.3 48.2
2001 01 24 17 38.91 -17 57.7 1.296 0.823 39.4 49.4
2001 01 26 17 34.01 -18 01.2 1.276 0.864 42.6 50.4
2001 01 28 17 29.03 -18 04.5 1.256 0.906 45.7 51.1
2001 01 30 17 23.92 -18 07.4 1.233 0.947 49.0 51.7
2001 02 01 17 18.64 -18 10.0 1.210 0.987 52.2 52.1
2001 02 03 17 13.14 -18 12.2 1.186 1.027 55.5 52.3
2001 02 05 17 07.38 -18 13.7 1.162 1.067 58.9 52.3
2001 02 07 17 01.33 -18 14.5 1.136 1.106 62.3 52.2
2001 02 09 16 54.93 -18 14.5 1.111 1.145 65.8 51.9
2001 02 11 16 48.14 -18 13.4 1.085 1.183 69.5 51.4
2001 02 13 16 40.92 -18 11.0 1.059 1.221 73.2 50.7
2001 02 15 16 33.21 -18 07.2 1.033 1.259 77.0 49.9
2001 02 17 16 24.97 -18 01.5 1.008 1.296 81.0 48.9
2001 02 19 16 16.17 -17 53.8 0.983 1.333 85.1 47.7
2001 02 21 16 06.75 -17 43.5 0.959 1.369 89.3 46.2
41P/Tuttle-Giacobini-Kresak
Epoch 2001 Jan. 11.0 TT = JDT 2451920.5
T 2001 Jan. 6.9708 TT Nakano
q 1.052244 (2000.0) P Q
n 0.1816246 Peri. 62.1699 -0.9114264 +0.3989606
a 3.088064 Node 141.1066 -0.4107875 -0.8682662
e 0.659254 Incl. 9.2254 -0.0235713 -0.2948631
P 5.43
>From 84 observations 1989-2000, mean residual 0".9.
Orbital elements from MPC 41717.
41P/Tuttle-Giacobini-Kresak Elements MPC 41717
Date TT R. A. (2000) Decl. Delta r Elong. Phase Dm1
2001 01 12 16 32.51 -15 57.4 1.527 1.054 43.3 39.7 10-11
2001 01 14 16 41.45 -16 10.8 1.532 1.057 43.1 39.5
2001 01 16 16 50.32 -16 22.7 1.538 1.059 43.0 39.3
2001 01 18 16 59.11 -16 33.0 1.545 1.063 43.0 39.1
2001 01 20 17 07.81 -16 41.7 1.551 1.067 42.9 38.9
2001 01 22 17 16.43 -16 49.0 1.558 1.072 42.9 38.7
2001 01 24 17 24.94 -16 54.8 1.566 1.077 42.9 38.4
2001 01 26 17 33.36 -16 59.1 1.573 1.083 42.9 38.2
2001 01 28 17 41.67 -17 02.1 1.581 1.090 42.9 38.0
2001 01 30 17 49.86 -17 03.7 1.589 1.097 43.0 37.7
2001 02 01 17 57.94 -17 04.1 1.597 1.105 43.1 37.5
2001 02 03 18 05.90 -17 03.2 1.605 1.114 43.2 37.3
2001 02 05 18 13.73 -17 01.1 1.614 1.123 43.3 37.0
2001 02 07 18 21.44 -16 57.8 1.622 1.132 43.5 36.8
2001 02 09 18 29.03 -16 53.5 1.630 1.142 43.7 36.6
2001 02 11 18 36.49 -16 48.2 1.639 1.153 43.9 36.4
2001 02 13 18 43.82 -16 41.9 1.647 1.164 44.1 36.2
2001 02 15 18 51.02 -16 34.7 1.656 1.175 44.4 36.0
2001 02 17 18 58.08 -16 26.6 1.664 1.187 44.7 35.9
2001 02 19 19 05.02 -16 17.8 1.672 1.199 45.1 35.7
2001 02 21 19 11.83 -16 08.2 1.680 1.212 45.4 35.5
47P/Ashbrook-Jackson
Epoch 2001 Jan. 11.0 TT = JDT 2451920.5
T 2001 Jan. 6.4952 TT Nakano
q 2.305365 (2000.0) P Q
n 0.1321448 Peri. 348.8845 +0.9887736 +0.1490972
a 3.817414 Node 2.6022 -0.1150102 +0.8014403
e 0.396093 Incl. 12.5134 -0.0953908 +0.5791921
P 7.46
>From 571 observations 1948-1997, mean residual 0".9.
Orbital elements from MPC 31662.
47P/Ashbrook-Jackson Elements MPC 31662
Date TT R. A. (2000) Decl. Delta r Elong. Phase Dm1
2001 01 12 22 34.17 -10 43.5 2.904 2.306 44.4 17.4 14-15
2001 01 14 22 37.72 -10 14.7 2.921 2.306 43.3 17.0
2001 01 16 22 41.28 -09 45.8 2.937 2.306 42.3 16.7
2001 01 18 22 44.84 -09 16.7 2.954 2.307 41.2 16.3
2001 01 20 22 48.41 -08 47.5 2.970 2.307 40.2 16.0
2001 01 22 22 51.99 -08 18.2 2.986 2.308 39.1 15.6
2001 01 24 22 55.57 -07 48.8 3.002 2.309 38.1 15.3
2001 01 26 22 59.16 -07 19.3 3.017 2.310 37.1 14.9
2001 01 28 23 02.75 -06 49.7 3.033 2.310 36.1 14.5
2001 01 30 23 06.34 -06 20.1 3.048 2.311 35.0 14.2
2001 02 01 23 09.93 -05 50.3 3.062 2.313 34.0 13.8
2001 02 03 23 13.53 -05 20.5 3.077 2.314 33.0 13.4
2001 02 05 23 17.13 -04 50.6 3.091 2.315 32.0 13.0
2001 02 07 23 20.74 -04 20.7 3.105 2.316 31.0 12.7
2001 02 09 23 24.34 -03 50.8 3.119 2.318 30.0 12.3
2001 02 11 23 27.95 -03 20.8 3.132 2.319 29.0 11.9
2001 02 13 23 31.56 -02 50.7 3.146 2.321 28.0 11.5
2001 02 15 23 35.17 -02 20.7 3.159 2.322 27.0 11.1
2001 02 17 23 38.78 -01 50.6 3.171 2.324 26.0 10.8
2001 02 19 23 42.40 -01 20.5 3.184 2.326 25.0 10.4
2001 02 21 23 46.02 -00 50.4 3.196 2.328 24.1 10.0
74P/Smirnova-Chernykh
Epoch 2001 Jan. 11.0 TT = JDT 2451920.5
T 2001 Jan. 15.6452 TT Nakano
q 3.545786 (2000.0) P Q
n 0.1160234 Peri. 86.6545 -0.9537942 -0.2784239
a 4.163313 Node 77.1565 +0.2084280 -0.8838705
e 0.148326 Incl. 6.6523 +0.2164126 -0.3758365
P 8.49
>From 233 observations 1978-1998, mean residual 0".9.
Orbital elements from MPC 31662.
74P/Smirnova-Chernykh Elements MPC 31662
Date TT R. A. (2000) Decl. Delta r Elong. Phase Dm1
2001 01 12 12 05.10 +07 54.5 3.036 3.546 113.6 14.7 14-15
2001 01 14 12 05.52 +07 56.4 3.009 3.546 115.5 14.5
2001 01 16 12 05.87 +07 58.9 2.983 3.546 117.5 14.2
2001 01 18 12 06.15 +08 01.7 2.957 3.546 119.4 14.0
2001 01 20 12 06.36 +08 05.0 2.932 3.546 121.4 13.7
2001 01 22 12 06.49 +08 08.8 2.907 3.546 123.4 13.4
2001 01 24 12 06.55 +08 13.0 2.883 3.546 125.4 13.1
2001 01 26 12 06.54 +08 17.6 2.860 3.546 127.5 12.7
2001 01 28 12 06.45 +08 22.7 2.837 3.546 129.5 12.4
2001 01 30 12 06.28 +08 28.1 2.815 3.546 131.6 12.0
2001 02 01 12 06.04 +08 33.9 2.794 3.546 133.6 11.6
2001 02 03 12 05.73 +08 40.2 2.773 3.546 135.7 11.2
2001 02 05 12 05.35 +08 46.7 2.754 3.547 137.8 10.8
2001 02 07 12 04.90 +08 53.6 2.735 3.547 139.9 10.3
2001 02 09 12 04.37 +09 00.8 2.717 3.547 142.0 9.9
2001 02 11 12 03.78 +09 08.3 2.699 3.547 144.2 9.4
2001 02 13 12 03.12 +09 16.1 2.683 3.547 146.3 8.9
2001 02 15 12 02.40 +09 24.1 2.668 3.547 148.4 8.4
2001 02 17 12 01.61 +09 32.3 2.654 3.548 150.6 7.9
2001 02 19 12 00.76 +09 40.7 2.640 3.548 152.7 7.3
2001 02 21 11 59.86 +09 49.3 2.628 3.548 154.8 6.8
110P/Hartley 3
Epoch 2001 Apr. 1.0 TT = JDT 2452000.5
T 2001 Mar. 21.4039 TT Nakano
q 2.478306 (2000.0) P Q
n 0.1433304 Peri. 167.9365 -0.1032600 -0.9757603
a 3.616128 Node 287.7527 +0.8949077 -0.0064704
e 0.314652 Incl. 11.6888 +0.4341400 -0.2187465
P 6.88
>From 146 observations 1988-1995, mean residual 0".8.
Orbital elements from MPC 31663.
110P/Hartley 3 Elements MPC 31663
Date TT R. A. (2000) Decl. Delta r Elong. Phase Dm1
2001 01 12 03 34.75 +28 00.8 1.808 2.513 125.8 18.5 14-15
2001 01 14 03 35.31 +27 48.5 1.827 2.511 123.9 19.0
2001 01 16 03 36.00 +27 36.7 1.845 2.509 122.0 19.4
2001 01 18 03 36.79 +27 25.4 1.865 2.508 120.1 19.8
2001 01 20 03 37.70 +27 14.6 1.885 2.506 118.3 20.2
2001 01 22 03 38.73 +27 04.3 1.905 2.504 116.5 20.6
2001 01 24 03 39.86 +26 54.5 1.926 2.502 114.7 20.9
2001 01 26 03 41.11 +26 45.2 1.947 2.501 112.9 21.3
2001 01 28 03 42.46 +26 36.4 1.969 2.499 111.2 21.6
2001 01 30 03 43.91 +26 28.1 1.990 2.497 109.4 21.8
2001 02 01 03 45.46 +26 20.2 2.013 2.496 107.7 22.1
2001 02 03 03 47.11 +26 12.8 2.035 2.495 106.1 22.3
2001 02 05 03 48.86 +26 05.8 2.058 2.493 104.4 22.5
2001 02 07 03 50.69 +25 59.2 2.081 2.492 102.8 22.7
2001 02 09 03 52.62 +25 53.1 2.104 2.491 101.2 22.9
2001 02 11 03 54.63 +25 47.3 2.127 2.489 99.6 23.0
2001 02 13 03 56.72 +25 41.8 2.151 2.488 98.0 23.1
2001 02 15 03 58.89 +25 36.8 2.174 2.487 96.5 23.2
2001 02 17 04 01.14 +25 32.0 2.198 2.486 94.9 23.3
2001 02 19 04 03.47 +25 27.6 2.222 2.485 93.4 23.4
2001 02 21 04 05.87 +25 23.4 2.246 2.484 91.9 23.4
1950 DA
Epoch 2001 Apr. 1.0 TT = JDT 2452000.5 Williams
M 354.69024 (2000.0) P Q
n 0.44498831 Peri. 224.51082 -0.74998363 +0.66135304
a 1.6991706 Node 356.82439 -0.53264181 -0.61431503
e 0.5076871 Incl. 12.18424 -0.39219542 -0.43038262
P 2.21 H 17.5 G 0.15 U 2
>From 43 observations at 2 oppositions, 1950-2001, mean residual 0".78.
Orbital elements from MPEC 2001-A46.
1950 DA a,e,i = 1.70, 0.51, 12 Elements E2001-A46
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2001 01 12 10 58.42 +37 46.7 0.488 1.366 133.5 31.5 18.0
2001 01 14 11 02.05 +38 06.9 0.466 1.351 134.3 31.4 17.8
2001 01 16 11 05.73 +38 28.1 0.445 1.336 135.0 31.4 17.7
2001 01 18 11 09.45 +38 50.5 0.423 1.320 135.6 31.4 17.6
2001 01 20 11 13.25 +39 13.9 0.402 1.305 136.2 31.5 17.4
2001 01 22 11 17.14 +39 38.6 0.382 1.289 136.7 31.6 17.3
2001 01 24 11 21.14 +40 04.4 0.362 1.273 137.1 31.7 17.2
2001 01 26 11 25.28 +40 31.5 0.342 1.258 137.4 32.0 17.0
2001 01 28 11 29.60 +40 59.8 0.322 1.242 137.7 32.3 16.9
2001 01 30 11 34.15 +41 29.4 0.303 1.227 137.8 32.7 16.7
2001 02 01 11 38.99 +42 00.4 0.285 1.211 137.8 33.1 16.6
2001 02 03 11 44.21 +42 32.8 0.266 1.196 137.6 33.8 16.4
2001 02 05 11 49.89 +43 06.8 0.248 1.180 137.3 34.5 16.3
2001 02 07 11 56.17 +43 42.4 0.230 1.165 136.9 35.4 16.1
2001 02 09 12 03.22 +44 19.9 0.213 1.150 136.2 36.4 15.9
2001 02 11 12 11.27 +44 59.3 0.196 1.134 135.4 37.7 15.7
2001 02 13 12 20.63 +45 40.6 0.179 1.119 134.2 39.2 15.6
2001 02 15 12 31.74 +46 23.8 0.162 1.104 132.8 41.0 15.4
2001 02 17 12 45.22 +47 08.2 0.146 1.089 131.1 43.2 15.2
2001 02 19 13 01.98 +47 52.2 0.130 1.075 128.8 45.8 15.0
2001 02 21 13 23.37 +48 31.7 0.114 1.060 125.9 49.1 14.8
2000 XX13
Epoch 2000 Dec. 2.0 TT = JDT 2451880.5 Williams
M 142.77849 (2000.0) P Q
n 0.79032257 Peri. 333.64863 +0.87249905 +0.48829856
a 1.1585989 Node 356.94632 -0.36926860 +0.63536330
e 0.3123371 Incl. 19.29737 -0.31997831 +0.59822904
P 1.25 H 14.4 G 0.15
>From 16 observations 2000 Dec. 4-19. Orbital elements from MPO 8565.
2000 XX13 a,e,i = 1.16, 0.31, 19 Elements MPO 8565
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2001 01 12 12 56.40 +09 48.8 0.967 1.520 102.4 39.2 16.8
2001 01 14 12 58.02 +09 31.6 0.947 1.520 103.8 38.9 16.7
2001 01 16 12 59.51 +09 14.8 0.927 1.520 105.4 38.6 16.7
2001 01 18 13 00.85 +08 58.3 0.907 1.520 106.9 38.2 16.6
2001 01 20 13 02.04 +08 42.1 0.888 1.520 108.5 37.9 16.6
2001 01 22 13 03.06 +08 26.2 0.868 1.520 110.2 37.4 16.5
2001 01 24 13 03.91 +08 10.6 0.848 1.520 111.9 36.9 16.4
2001 01 26 13 04.59 +07 55.3 0.828 1.519 113.6 36.4 16.4
2001 01 28 13 05.06 +07 40.3 0.808 1.519 115.4 35.9 16.3
2001 01 30 13 05.34 +07 25.5 0.789 1.518 117.2 35.3 16.2
2001 02 01 13 05.40 +07 11.0 0.769 1.517 119.1 34.6 16.2
2001 02 03 13 05.24 +06 56.6 0.750 1.515 121.0 33.9 16.1
2001 02 05 13 04.84 +06 42.4 0.731 1.514 123.0 33.1 16.0
2001 02 07 13 04.19 +06 28.4 0.712 1.513 125.1 32.3 15.9
2001 02 09 13 03.28 +06 14.5 0.694 1.511 127.2 31.3 15.8
2001 02 11 13 02.09 +06 00.6 0.676 1.509 129.4 30.4 15.8
2001 02 13 13 00.60 +05 46.8 0.658 1.507 131.6 29.3 15.7
2001 02 15 12 58.81 +05 33.0 0.641 1.505 134.0 28.2 15.6
2001 02 17 12 56.69 +05 19.1 0.624 1.503 136.4 27.0 15.5
2001 02 19 12 54.23 +05 05.2 0.607 1.500 138.9 25.7 15.4
2001 02 21 12 51.42 +04 51.1 0.591 1.498 141.5 24.3 15.3
2000 YF29
Epoch 2001 Apr. 1.0 TT = JDT 2452000.5 Williams
M 23.35293 (2000.0) P Q
n 0.54083530 Peri. 27.81969 -0.88680225 -0.45331069
a 1.4919675 Node 124.94225 +0.40103159 -0.85154234
e 0.3712357 Incl. 6.29990 +0.22968552 -0.26341045
P 1.82 H 20.2 G 0.15 U 5
>From 112 observations 2000 Nov. 25-2001 Jan. 9, mean residual 0".66.
Orbital elements from MPEC 2001-A46.
2000 YF29 a,e,i = 1.49, 0.37, 6 Elements E2001-A46
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2001 01 12 04 10.72 -11 23.1 0.056 1.013 120.1 57.2 16.0
2001 01 14 03 56.78 -11 52.9 0.048 1.005 115.3 62.2 15.8
2001 01 16 03 37.79 -12 26.9 0.041 0.998 109.3 68.5 15.6
2001 01 18 03 10.49 -13 04.7 0.033 0.991 101.3 76.8 15.5
2001 01 20 02 29.04 -13 39.8 0.027 0.984 90.0 88.5 15.4
2001 01 22 01 24.22 -13 42.2 0.022 0.978 73.2 105.6 15.7
2001 01 24 23 50.54 -11 55.6 0.019 0.972 49.7 129.4 17.2
2001 01 26 22 08.25 -07 47.4 0.020 0.967 25.4 154.1 20.9
2001 01 28 20 49.43 -03 29.2 0.024 0.962 14.9 164.8 25.0
2001 01 30 19 58.55 -00 28.7 0.030 0.958 21.4 157.9 22.8
2001 02 01 19 26.23 +01 24.8 0.037 0.954 29.4 149.5 21.3
2001 02 03 19 04.90 +02 36.4 0.044 0.950 35.7 142.8 20.6
2001 02 05 18 50.22 +03 22.7 0.052 0.947 40.6 137.3 20.2
2001 02 07 18 39.80 +03 53.0 0.061 0.944 44.7 132.7 20.0
2001 02 09 18 32.24 +04 12.9 0.069 0.942 48.1 128.8 19.9
2001 02 11 18 26.70 +04 25.8 0.077 0.940 51.1 125.3 19.8
2001 02 13 18 22.63 +04 33.8 0.086 0.939 53.7 122.1 19.7
2001 02 15 18 19.67 +04 38.3 0.094 0.938 56.1 119.1 19.7
2001 02 17 18 17.57 +04 40.3 0.103 0.938 58.3 116.4 19.7
2001 02 19 18 16.13 +04 40.5 0.111 0.938 60.3 113.8 19.7
2001 02 21 18 15.21 +04 39.4 0.120 0.939 62.2 111.3 19.7
(1362) Griqua
Epoch 2001 Apr. 1.0 TT = JDT 2452000.5 Williams
M 37.42870 (2000.0) P Q
n 0.17016277 Peri. 262.46428 +0.84015892 -0.41445831
a 3.2252225 Node 121.40343 +0.49122051 +0.85489312
e 0.3690900 Incl. 24.19402 -0.22985952 +0.31206100
P 5.79 H 11.18 G 0.15 U 0
>From 275 observations at 29 oppositions, 1931-2001, mean residual 0".78.
Orbital elements from MPO 6175.
(1362) Griqua a,e,i = 3.23, 0.37, 24 Elements MPO 6175
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2001 01 12 03 59.29 -04 33.7 1.598 2.269 121.2 21.8 15.0
2001 01 14 03 59.58 -03 57.1 1.621 2.275 119.8 22.0 15.1
2001 01 16 03 59.99 -03 20.6 1.644 2.282 118.3 22.3 15.1
2001 01 18 04 00.51 -02 44.2 1.668 2.288 116.9 22.6 15.2
2001 01 20 04 01.13 -02 08.0 1.692 2.294 115.4 22.8 15.2
2001 01 22 04 01.86 -01 32.0 1.717 2.300 114.0 23.0 15.3
2001 01 24 04 02.69 -00 56.2 1.742 2.306 112.5 23.2 15.3
2001 01 26 04 03.63 -00 20.8 1.768 2.313 111.1 23.4 15.3
2001 01 28 04 04.67 +00 14.4 1.795 2.319 109.6 23.6 15.4
2001 01 30 04 05.80 +00 49.1 1.821 2.325 108.2 23.7 15.4
2001 02 01 04 07.03 +01 23.5 1.848 2.332 106.8 23.9 15.5
2001 02 03 04 08.34 +01 57.5 1.876 2.338 105.3 24.0 15.5
2001 02 05 04 09.75 +02 31.0 1.904 2.345 103.9 24.1 15.6
2001 02 07 04 11.24 +03 04.1 1.932 2.351 102.5 24.2 15.6
2001 02 09 04 12.81 +03 36.7 1.961 2.358 101.1 24.2 15.6
2001 02 11 04 14.46 +04 08.9 1.989 2.365 99.7 24.3 15.7
2001 02 13 04 16.19 +04 40.5 2.019 2.371 98.3 24.3 15.7
2001 02 15 04 18.00 +05 11.7 2.048 2.378 96.9 24.4 15.8
2001 02 17 04 19.87 +05 42.3 2.078 2.385 95.5 24.4 15.8
2001 02 19 04 21.82 +06 12.4 2.108 2.392 94.1 24.3 15.8
2001 02 21 04 23.83 +06 42.0 2.138 2.398 92.8 24.3 15.9
(4179) Toutatis
Epoch 2001 Apr. 1.0 TT = JDT 2452000.5 Williams
M 36.70660 (2000.0) P Q
n 0.24784331 Peri. 274.77877 +0.73104145 -0.68230269
a 2.5100628 Node 128.24525 +0.62923213 +0.67047154
e 0.6343110 Incl. 0.46957 +0.26390399 +0.29142915
P 3.98 H 15.30 G 0.10 U 0
>From 836 observations at 8 oppositions, 1988-2001, mean residual 0".65.
Orbital elements from MPO 6175.
(4179) Toutatis a,e,i = 2.51, 0.63, 0 Elements MPO 6175
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2001 01 12 09 34.38 +14 09.5 0.358 1.307 150.5 21.7 14.8
2001 01 14 09 30.17 +14 32.8 0.369 1.325 153.7 19.2 14.8
2001 01 16 09 26.00 +14 55.5 0.381 1.342 156.8 16.8 14.8
2001 01 18 09 21.90 +15 17.4 0.393 1.360 159.9 14.4 14.8
2001 01 20 09 17.89 +15 38.3 0.406 1.377 162.9 12.1 14.8
2001 01 22 09 14.00 +15 58.2 0.420 1.395 166.0 9.9 14.8
2001 01 24 09 10.24 +16 17.1 0.434 1.413 169.0 7.7 14.8
2001 01 26 09 06.64 +16 34.9 0.449 1.431 171.9 5.6 14.8
2001 01 28 09 03.21 +16 51.5 0.465 1.448 174.8 3.5 14.8
2001 01 30 08 59.96 +17 07.0 0.481 1.466 177.6 1.6 14.8
2001 02 01 08 56.91 +17 21.3 0.499 1.484 179.5 0.3 14.7
2001 02 03 08 54.07 +17 34.4 0.517 1.502 176.8 2.1 15.0
2001 02 05 08 51.45 +17 46.4 0.535 1.520 174.1 3.8 15.2
2001 02 07 08 49.03 +17 57.3 0.555 1.537 171.5 5.4 15.4
2001 02 09 08 46.84 +18 07.0 0.575 1.555 168.9 7.0 15.6
2001 02 11 08 44.86 +18 15.8 0.596 1.573 166.4 8.5 15.8
2001 02 13 08 43.09 +18 23.6 0.618 1.591 164.0 9.9 15.9
2001 02 15 08 41.54 +18 30.4 0.641 1.608 161.6 11.2 16.1
2001 02 17 08 40.19 +18 36.2 0.664 1.626 159.2 12.5 16.3
2001 02 19 08 39.04 +18 41.2 0.688 1.644 156.9 13.7 16.4
2001 02 21 08 38.09 +18 45.4 0.713 1.661 154.6 14.8 16.5
(5131) 1990 BG
Epoch 2001 Apr. 1.0 TT = JDT 2452000.5 Williams
M 359.40681 (2000.0) P Q
n 0.54411537 Peri. 135.74437 -0.27570080 + |