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: 184212 # Created Fri Nov 22 02:06:59 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 76 observations of 76 # Arc: 17.07y # First observation: 2000/08/27 # Last observation: 2017/09/23 # Chi-squared of fit: 92.97 DOF: 146 RMS: 0.20 # Min/Max residuals: -0.55 0.66 # Exact a, adot, b, bdot, g, gdot: 1.959437E-05 3.590120E-02 8.223773E-06 9.287557E-03 2.808623E-02 -6.218951E-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 -5.427615 -22.661389 0.061374 -0.095256 -1.000818 2451783.685133 # Heliocentric elements and errors Epoch: 2451784.5000 = 2000/08/28 Mean Anomaly: 356.49848 +/- 0.000 Argument of Peri: 3.85811 +/- 0.000 Long of Asc Node: 356.82461 +/- 0.000 Inclination: 15.41690 +/- 0.000 Eccentricity: 0.67686227 +/- 0.0000 Semi-Major Axis: 109.30589658 +/- 0.0000 Time of Perihelion: 2455844.4279 +/- 0.0 Perihelion: 35.32085964 +/- 0.0000 Aphelion: 183.29093351 +/- 0.0000 Period (y) 1142.8088 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 33.61856471 +/- 0.0000 Ecliptic Y -14.09541783 +/- 0.0000 Ecliptic Z -3.36749748 +/- 0.0000 Ecliptic XDOT 0.00086318 +/- 0.0000 Ecliptic YDOT 0.00343431 +/- 0.0000 Ecliptic ZDOT 0.00095879 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 36.60926119 +/- 0.0000 Geocenter to KBO 35.60480421 +/- 0.0000 # Hcoef: 7.25
The following table shows the complete astrometric record for 184212. 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 (184212) followed by the observatory code and reference code for the source of the astrometry.
2000 08 27.18439 22 44 27.30 -13 50 54.1 22.2R 184212 807 Cp0715 2000 08 27.25941 22 44 26.92 -13 50 55.9 184212 807 Cp0715 2004 08 13.16488 23 13 40.17 -08 28 07.9 21.8R 184212 807 Cl4405 2004 08 13.27068 23 13 39.69 -08 28 10.4 184212 807 Cl4405 2004 09 08.36356 23 11 32.29 -08 39 21.7 22.5R 184212 688 Cl4405 2004 09 08.39444 23 11 32.13 -08 39 22.2 184212 688 Cl4405 2004 09 11.24547 23 11 17.56 -08 40 34.6 184212 304 Cl4405 2004 09 11.26462 23 11 17.46 -08 40 35.6 184212 304 Cl4405 2004 09 17.33709 23 10 46.49 -08 43 07.9 22.4R 184212 568 Cl5765 2004 09 17.41840 23 10 46.07 -08 43 09.7 184212 568 Cl5765 2004 09 18.33826 23 10 41.43 -08 43 32.0 184212 568 Cl5765 2004 10 12.16105 23 08 50.60 -08 51 42.1 23.3R 184212 695 Cl8416 2004 10 12.27027 23 08 50.15 -08 51 44.3 184212 695 Cl8416 2005 07 11.36620 23 22 27.60 -06 56 11.2 22.6R 184212 304 Co3997 2005 07 11.41914 23 22 27.48 -06 56 11.5 184212 304 Co3997 2005 08 08.15519 23 21 03.64 -07 03 50.3 21.7R 184212 807 Co3997 2005 08 08.28877 23 21 03.08 -07 03 53.3 184212 807 Co3997 2005 08 09.15955 23 20 59.56 -07 04 12.4 184212 807 Co3997 2005 11 03.26436 23 14 36.64 -07 34 19.3 22.7R 184212 695 Cp0715 2005 11 03.30613 23 14 36.51 -07 34 19.9 184212 695 Cp0715 2007 09 11.38720 23 32 31.52 -04 30 18.0 22.1r 184212 695 Cv8645 2007 09 11.43711 23 32 31.25 -04 30 19.3 21.8r 184212 695 Cv8645 2007 09 17.21361 23 32 01.76 -04 32 52.2 184212 675 Cy6739 2007 09 17.23034 23 32 01.66 -04 32 52.8 184212 675 Cy6739 2007 09 17.26988 23 32 01.46 -04 32 53.7 184212 675 Cy6739 2007 09 17.27953 23 32 01.41 -04 32 54.0 22.5R 184212 675 Cy6739 2008 10 23.18688 23 36 14.41 -03 22 14.2 22.7r 184212 695 C~0gXE 2008 10 24.18575 23 36 10.58 -03 22 31.6 22.5r 184212 695 C~0gXE 2008 10 24.28157 23 36 10.22 -03 22 33.2 22.8r 184212 695 C~0gXE 2008 10 30.239211 23 35 48.97 -03 24 07.0 23.0V 184212 645 C~1RYh 2008 10 30.240040 23 35 48.96 -03 24 07.0 22.1V 184212 645 C~1RYh 2008 10 30.242528 23 35 48.95 -03 24 07.0 23.7V 184212 645 C~1RYh 2009 01 16.065526 23 36 25.07 -03 10 32.9 22.7V 184212 645 C~2KGK 2009 01 16.066355 23 36 25.07 -03 10 32.9 22.3V 184212 645 C~2KGK 2009 01 16.068843 23 36 25.08 -03 10 32.9 23.4V 184212 645 C~2KGK 2015 06 23.52397 00 31 51.278 +06 53 07.42 22.9r 184212 568 C~2mP8 2015 08 13.48399 00 31 18.942 +06 59 44.27 22.8r 184212 568 C~2mP8 2015 08 13.53744 00 31 18.778 +06 59 43.84 22.8r 184212 568 C~2mP8 2015 08 19.54663 00 30 59.208 +06 58 43.98 22.8r 184212 568 C~2mP8 2015 08 19.58802 00 30 59.050 +06 58 43.31 23.0r 184212 568 C~2mP8 2015 08 19.61668 00 30 58.945 +06 58 42.89 22.8r 184212 568 C~2mP8 2015 08 20.42114 00 30 56.139 +06 58 33.35 22.6r 184212 568 C~2mP8 2015 08 20.47055 00 30 55.955 +06 58 32.74 22.7r 184212 568 C~2mP8 2015 09 07.56844 00 29 41.250 +06 53 31.93 22.9w 184212 568 C~2mP8 2015 09 09.39585 00 29 32.749 +06 52 53.63 23.0r 184212 568 C~2mP8 2015 09 09.43729 00 29 32.551 +06 52 52.73 22.9r 184212 568 C~2mP8 2015 09 09.47825 00 29 32.352 +06 52 51.88 23.0r 184212 568 C~2mP8 2015 09 18.46210 00 28 48.623 +06 49 26.35 23.0w 184212 568 C~2mP8 2015 10 08.34986 00 27 06.785 +06 40 46.09 22.8w 184212 568 C~2mP8 2015 10 08.40250 00 27 06.506 +06 40 44.68 22.9w 184212 568 C~2mP8 2015 10 09.31946 00 27 01.836 +06 40 19.57 22.7w 184212 568 C~2mP8 2015 11 10.44543 00 24 37.198 +06 26 45.85 23.3w 184212 568 C~2mP8 2015 11 10.47307 00 24 37.086 +06 26 45.18 23.3w 184212 568 C~2mP8 2015 11 15.26832 00 24 20.772 +06 25 08.20 22.9w 184212 568 C~2mP8 2015 12 08.24411 00 23 30.740 +06 20 00.37 23.3w 184212 568 C~2mP8 2016 01 01.30665 00 23 36.387 +06 20 26.83 22.9w 184212 568 C~2mP8 2016 09 05.47832 00 36 53.600 +08 17 12.08 23.2w 184212 568 C~2mP8 2016 09 06.43252 00 36 49.314 +08 16 54.10 22.8w 184212 568 C~2mP8 2016 09 06.47297 00 36 49.120 +08 16 53.29 22.8w 184212 568 C~2mP8 2016 09 25.34745 00 35 17.075 +08 09 47.73 22.8w 184212 568 C~2mP8 2016 09 25.44453 00 35 16.557 +08 09 45.27 22.8w 184212 568 C~2mP8 2016 09 26.42725 00 35 11.518 +08 09 20.28 22.9w 184212 568 C~2mP8 2016 11 03.37989 00 32 06.175 +07 52 31.37 184212 568 C~2mP8 2016 11 03.43780 00 32 05.927 +07 52 29.98 184212 568 C~2mP8 2016 12 25.26669 00 30 24.338 +07 41 25.67 23.3w 184212 568 C~2mP8 2016 12 26.24341 00 30 25.028 +07 41 28.54 23.2w 184212 568 C~2mP8 2016 12 29.23147 00 30 27.772 +07 41 41.02 23.3w 184212 568 C~2mP8 2017 01 02.30911 00 30 33.075 +07 42 07.93 22.9w 184212 568 C~2mP8 2017 01 30.22500 00 31 55.759 +07 50 18.87 23.2w 184212 568 C~2mP8 2017 09 16.49538 00 43 09.905 +09 35 51.64 22.8w 184212 568 C~2mP8 2017 09 17.39451 00 43 05.528 +09 35 31.99 23.2w 184212 568 C~2mP8 2017 09 22.44326 00 42 40.416 +09 33 36.56 22.8w 184212 568 C~2mP8 2017 09 22.44876 00 42 40.387 +09 33 36.43 22.8w 184212 568 C~2mP8 2017 09 23.34427 00 42 35.84 +09 33 14.9 22.8R 184212 G37 C~2MB6 2017 09 23.39475 00 42 35.58 +09 33 13.9 184212 G37 C~2MB6 2017 09 23.43406 00 42 35.36 +09 33 13.3 184212 G37 C~2MB6
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 0.36 0.00 -0.52
2 0.0002 0.00 0.51 0.00 -0.44
3 3.9616 0.00 -0.51 0.00 0.07
4 3.9619 0.00 -0.54 0.00 0.15
5 4.0333 0.00 -0.24 0.00 -0.10
6 4.0334 0.00 -0.23 0.00 0.20
7 4.0412 0.00 0.31 0.00 0.66
8 4.0413 0.00 0.30 0.00 0.14
9 4.0579 0.00 -0.11 0.00 -0.14
10 4.0581 0.00 -0.11 0.00 0.05
11 4.0607 0.00 -0.12 0.00 0.12
12 4.1259 0.00 -0.29 0.00 0.21
13 4.1262 0.00 -0.20 0.00 -0.25
14 4.8711 0.00 0.41 0.00 -0.06
15 4.8713 0.00 0.16 0.00 0.16
16 4.9472 0.00 -0.11 0.00 -0.09
17 4.9476 0.00 -0.26 0.00 -0.13
18 4.9500 0.00 -0.07 0.00 0.10
19 5.1857 0.00 0.24 0.00 0.34
20 5.1858 0.00 -0.07 0.00 -0.02
21 7.0396 0.00 -0.05 0.00 0.25
22 7.0397 0.00 -0.22 0.00 0.27
23 7.0555 0.00 0.42 0.00 0.22
24 7.0556 0.00 0.23 0.00 0.06
25 7.0557 0.00 0.31 0.00 0.21
26 7.0557 0.00 0.31 0.00 0.16
27 8.1561 0.00 -0.33 0.00 0.04
28 8.1588 0.00 -0.44 0.00 -0.00
29 8.1591 0.00 -0.26 0.00 0.04
30 8.1754 0.00 0.21 0.00 -0.41
31 8.1754 0.00 0.10 0.00 -0.40
32 8.1754 0.00 0.08 0.00 -0.36
33 8.3884 0.00 0.04 0.00 -0.04
34 8.3885 0.00 -0.01 0.00 -0.07
35 8.3885 0.00 -0.02 0.00 -0.16
36 14.8209 0.00 -0.08 0.00 -0.06
37 14.9604 0.00 0.05 0.00 -0.13
38 14.9606 0.00 0.09 0.00 -0.13
39 14.9770 0.00 0.13 0.00 0.14
40 14.9771 0.00 -0.01 0.00 -0.04
41 14.9772 0.00 -0.05 0.00 -0.12
42 14.9794 0.00 0.07 0.00 -0.06
43 14.9796 0.00 0.00 0.00 -0.07
44 15.0291 0.00 -0.05 0.00 -0.04
45 15.0341 0.00 -0.02 0.00 0.00
46 15.0342 0.00 -0.01 0.00 -0.02
47 15.0343 0.00 -0.04 0.00 0.00
48 15.0589 0.00 0.01 0.00 0.02
49 15.1134 0.00 0.09 0.00 -0.01
50 15.1135 0.00 0.02 0.00 0.01
51 15.1160 0.00 0.07 0.00 -0.07
52 15.2040 0.00 0.07 0.00 0.02
53 15.2041 0.00 -0.09 0.00 -0.06
54 15.2172 0.00 0.06 0.00 0.01
55 15.2801 0.00 0.08 0.00 -0.02
56 15.3460 0.00 0.02 0.00 -0.02
57 16.0254 0.00 0.02 0.00 -0.07
58 16.0281 0.00 0.09 0.00 0.00
59 16.0282 0.00 -0.02 0.00 -0.03
60 16.0798 0.00 0.20 0.00 0.00
61 16.0801 0.00 0.04 0.00 -0.00
62 16.0828 0.00 0.09 0.00 0.04
63 16.1867 0.00 0.17 0.00 0.01
64 16.1869 0.00 0.15 0.00 0.05
65 16.3288 0.00 0.03 0.00 -0.13
66 16.3314 0.00 0.08 0.00 0.01
67 16.3396 0.00 0.09 0.00 0.06
68 16.3508 0.00 0.05 0.00 0.04
69 16.4272 0.00 -0.01 0.00 -0.06
70 17.0549 0.00 0.09 0.00 0.03
71 17.0574 0.00 0.10 0.00 0.03
72 17.0712 0.00 0.06 0.00 0.04
73 17.0712 0.00 0.05 0.00 0.04
74 17.0737 0.00 -0.28 0.00 -0.11
75 17.0738 0.00 -0.28 0.00 0.11
76 17.0739 0.00 -0.55 0.00 0.45
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.
184212 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 110.020 110.019 110.022 ecceobj 0.679 0.679 0.679 incobj 15.407 15.407 15.407 qmin 34.275 34.238 34.372 qmax 186.798 186.867 186.646 amean 107.542 107.540 107.541 amin 105.353 105.421 105.326 amax 111.024 111.047 110.985 emean 0.672 0.672 0.671 emin 0.662 0.662 0.662 emax 0.683 0.683 0.682 imean 15.825 15.816 16.016 imin 15.503 15.528 15.818 imax 16.257 16.257 16.352 excite_mean 0.725 0.725 0.726 fracstop 1.000 1.000 1.000 cjmean 2.974 2.974 2.973 libcent 0 -180.0 -180.0 -180.0 libamp 0 -180.0 -180.0 -180.0 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 72.6 77.7 70.4 kozaiamp 67.4 75.4 69.1