The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory. Take special note that while the original Bernstein software works with barycentric coordinates, we convert these results into a heliocentric coordinate system.
# Object: 612208 # Created Sun Dec 22 02:07:44 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 41 observations of 42 # Arc: 22.98y # First observation: 2000/12/17 # Last observation: 2023/12/09 # Chi-squared of fit: 134.02 DOF: 76 RMS: 0.32 # Min/Max residuals: -1.64 0.53 # Exact a, adot, b, bdot, g, gdot: 2.049605E-05 4.562185E-02 -6.377358E-07 -1.013788E-02 3.584340E-02 -7.547191E-03 # Covariance matrix: 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 # lat0 lon0 xBary yBary zBary JD0 -3.684480 54.210275 -0.513752 -0.053702 -0.831457 2451895.763373 # Heliocentric elements and errors Epoch: 2451896.5000 = 2000/12/18 Mean Anomaly: 341.47040 +/- 0.000 Argument of Peri: 231.98716 +/- 0.000 Long of Asc Node: 219.37276 +/- 0.000 Inclination: 12.87963 +/- 0.000 Eccentricity: 0.30834841 +/- 0.0000 Semi-Major Axis: 39.71151996 +/- 0.0000 Time of Perihelion: 2456601.2520 +/- 0.0 Perihelion: 27.46653578 +/- 0.0000 Aphelion: 51.95650414 +/- 0.0000 Period (y) 250.2551 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 16.35684410 +/- 0.0000 Ecliptic Y 23.56563741 +/- 0.0000 Ecliptic Z -1.79287001 +/- 0.0000 Ecliptic XDOT -0.00320031 +/- 0.0000 Ecliptic YDOT 0.00153506 +/- 0.0000 Ecliptic ZDOT -0.00073554 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 28.74203825 +/- 0.0000 Geocenter to KBO 27.89928050 +/- 0.0000 # Hcoef: 7.73
The following table shows the complete astrometric record for 612208. The first three columns show the date of observation. The next six columns are RA and DEC. The next column (when provided) is the observed magnitude and filter. The next column is the object name (612208) followed by the observatory code and reference code for the source of the astrometry.
2000 12 17.26263 03 31 06.72 +15 15 01.5 22.5R 612208 695 Cc4111 2000 12 17.30542 03 31 06.47 +15 15 00.9 22.1R 612208 695 Cc4111 2000 12 17.35038 03 31 06.20 +15 14 59.7 21.9R 612208 695 Cc4111 2000 12 18.15950 03 31 01.75 +15 14 43.0 612208 695 C43802 2001 01 26.14281 03 28 47.85 +15 07 06.8 22.0R 612208 695 Ce1834 2001 01 26.24025 03 28 47.74 +15 07 06.6 612208 695 Ce1834 2001 02 14.83686 03 28 57.39 +15 08 29.5 612208 950 Cc6738 2001 02 14.88155 03 28 57.46 +15 08 29.7 612208 950 Cc6738 2001 02 14.92333 03 28 57.54 +15 08 30.3 612208 950 Cc6738 2001 12 12.06377 03 42 52.16 +15 20 04.5 22.1R 612208 950 Ce3555 2001 12 12.09988 03 42 51.93 +15 20 03.4 612208 950 Ce3555 2001 12 12.13756 03 42 51.68 +15 20 02.8 612208 950 Ce3555 2001 12 12.83248 03 42 47.41 +15 19 46.8 612208 950 Ce3555 2003 11 22.26995 04 08 06.77 +15 27 20.0 21.5R 612208 695 Cj3639 2003 11 23.27488 04 07 59.74 +15 26 53.3 612208 695 Cj3639 2003 11 23.32952 04 07 59.31 +15 26 52.7 612208 695 Cj3639 2003 11 23.38476 04 07 58.91 +15 26 51.3 612208 695 Cj3639 2007 11 11.38352 04 56 30.86 +15 00 00.7 21.8R 612208 688 Cw6696 2007 11 11.45822 04 56 30.48 +14 59 58.8 612208 688 Cw6696 2008 09 19.06421 05 11 07.22 +15 06 16.9 22.7R 612208 250 S~06AO 2008 09 19.07115 05 11 07.22 +15 06 16.7 612208 250 S~06AO 2008 09 19.07740 05 11 07.23 +15 06 16.6 612208 250 S~06AO 2008 09 19.08435 05 11 07.23 +15 06 16.5 612208 250 S~06AO 2008 10 22.33548 05 10 07.17 +14 53 24.5 23.5r 612208 695 C~0gLu 2008 10 22.42411 05 10 06.80 +14 53 22.8 24.1r 612208 695 C~0gLu 2010 02 26.32722 05 11 00.295 +14 22 34.81 21.5G 612208 F51 C~2rXd 2010 11 27.52619 05 30 44.429 +14 05 48.52 21.8G 612208 F51 C~2rXd 2011 12 02.57108 05 42 15.771 +13 43 50.53 22.0G 612208 F51 C~2rXd 2011 12 05.42023 05 41 55.727 +13 43 12.94 22.7G 612208 F51 C~2rXd 2011 12 06.54026 05 41 47.744 +13 42 59.06 21.9G 612208 F51 C~2rXd 2012 01 10.46295 05 37 38.913 +13 39 43.96 21.2G 612208 F51 C~2rXd 2012 01 11.47779 05 37 32.355 +13 39 45.46 22.3G 612208 F51 C~2rXd 2013 01 17.27343 05 48 53.917 +13 18 06.18 22.1G 612208 F51 C~2rXd 2013 02 12.37122 05 46 49.977 +13 22 29.23 21.8G 612208 F51 C~2rXd 2014 02 20.31395 05 58 20.703 +13 00 56.63 22.5G 612208 F51 C~2rXd 2021 01 07.21678 07 24 23.73 +09 09 16.3 21.3G 612208 X01 C~4Tvq 2021 01 07.29401 07 24 23.19 +09 09 17.5 21.1G 612208 X01 C~4Tvq 2021 01 08.13683 07 24 17.22 +09 09 27.0 21.3G 612208 X01 C~4Tvq 2021 01 08.23838 07 24 16.48 +09 09 28.2 21.3G 612208 X01 C~4Tvq 2023 12 09.513512 08 00 51.579 +07 12 47.41 21.7w 612208 F51 C~7dBw 2023 12 09.531277 08 00 51.487 +07 12 46.92 21.9w 612208 F51 C~7dBw 2023 12 09.548446 08 00 51.386 +07 12 46.76 22.1w 612208 F51 C~7dBw
The following table shows the residuals to the orbit fit. The first coumn is the point number. The second column is the time, in years, measured from the first observation. The third and fifth columns are the regularized positions used in the orbit fit. The fourth and sixth columns are the residuals, in arc seconds, for RA and Dec respectively.
1 0.0000 0.00 0.12 0.00 -0.79
2 0.0001 0.00 0.05 0.00 -0.45
3 0.0002 0.00 -0.16 0.00 -0.67
4 0.0025 0.00 0.53 0.00 -0.06
5 0.1092 0.00 0.22 0.00 0.19
6 0.1095 0.00 0.07 0.00 0.13
7 0.1631 0.00 -0.09 0.00 0.45
8 0.1632 0.00 -0.25 0.00 0.24
9 0.1633 0.00 -0.20 0.00 0.46
10 0.9851 0.00 -0.13 0.00 0.53
11 0.9852 0.00 -0.14 0.00 0.26
12 0.9853 0.00 -0.31 0.00 0.53
13 0.9872 0.00 0.14 0.00 0.28
14 2.9295 0.00 -0.12 0.00 -0.05
15 2.9323 0.00 0.52 0.00 -0.92
16 2.9324 0.00 -0.06 0.00 -0.12
17 2.9326 0.00 -0.13 0.00 -0.10
18 6.8997 0.00 -1.64 0.00 0.12
19 6.8999 0.00 -0.19 0.00 -0.07
20 7.7558 0.00 0.28 0.00 -0.06
21 7.7558 0.00 0.22 0.00 -0.11
22 7.7558 0.00 0.31 0.00 -0.07
23 7.7558 0.00 0.25 0.00 -0.02
24 7.8469 0.00 0.01 0.00 0.07
25 7.8471 0.00 0.03 0.00 0.47
26 9.1939 0.00 ( -3.77) 0.00 ( 0.87)
27 9.9446 0.00 0.05 0.00 -0.00
28 10.9577 0.00 0.04 0.00 -0.04
29 10.9655 0.00 -0.05 0.00 -0.18
30 10.9686 0.00 0.03 0.00 -0.11
31 11.0642 0.00 0.18 0.00 -0.19
32 11.0670 0.00 -0.01 0.00 -0.17
33 12.0849 0.00 -0.10 0.00 -0.17
34 12.1564 0.00 -0.07 0.00 0.40
35 13.1774 0.00 0.14 0.00 0.05
36 20.0574 0.00 -0.22 0.00 -0.13
37 20.0576 0.00 0.04 0.00 0.21
38 20.0599 0.00 0.08 0.00 0.02
39 20.0602 0.00 -0.01 0.00 0.03
40 22.9767 0.00 0.13 0.00 0.24
41 22.9768 0.00 0.04 0.00 -0.12
42 22.9768 0.00 -0.22 0.00 -0.16
The following table comes from a 10My integration of the orbit of the object. Three columns are shown. The first column is the result of integrating the nominal orbit. The other two columns are based on clones of the nominal orbit that are +/- 3 sigma from the nominal orbit. If all three types agree then the classificiation is deemed secure. The basis for these calculations is described in more detail in AJ, 129, 1117 (2005). Any use made of these calculations should refer to and credit this publication and the Deep Ecliptic Survey Team.
612208 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.676 39.676 39.676 ecceobj 0.307 0.307 0.307 incobj 12.878 12.878 12.878 qmin 26.838 26.830 26.790 qmax 52.765 52.649 52.706 amean 39.455 39.455 39.455 amin 38.978 38.993 38.955 amax 40.036 40.027 40.041 emean 0.299 0.299 0.299 emin 0.276 0.277 0.277 emax 0.319 0.319 0.318 imean 13.780 13.791 13.789 imin 12.926 12.958 12.965 imax 14.664 14.654 14.654 excite_mean 0.383 0.383 0.383 fracstop 1.000 1.000 1.000 cjmean 2.884 2.884 2.884 libcent 0 180.4 180.1 179.6 libamp 0 90.4 91.2 91.9 libcent 1 -180.0 -180.0 -180.0 libamp 1 -180.0 -180.0 -180.0 libcent 2 -180.0 -180.0 -180.0 libamp 2 -180.0 -180.0 -180.0 libcent 3 -180.0 -180.0 -180.0 libamp 3 -180.0 -180.0 -180.0 libcent 4 -180.0 -180.0 -180.0 libamp 4 -180.0 -180.0 -180.0 kozaimean 193.6 194.4 194.4 kozaiamp 180.0 179.9 180.0