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: 468422 # Created Sun Nov 24 02:07:04 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 32 observations of 32 # Arc: 15.30y # First observation: 2000/03/27 # Last observation: 2015/07/15 # Chi-squared of fit: 66.55 DOF: 58 RMS: 0.25 # Min/Max residuals: -0.73 0.92 # Exact a, adot, b, bdot, g, gdot: 1.339587E-05 2.320453E-02 6.145260E-08 2.702515E-04 2.388420E-02 -3.980174E-04 # 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 -0.364715 -175.415088 -0.043914 -0.006592 -1.004027 2451630.815983 # Heliocentric elements and errors Epoch: 2451630.5000 = 2000/03/27 Mean Anomaly: 325.20919 +/- 0.000 Argument of Peri: 8.51786 +/- 0.000 Long of Asc Node: 212.53786 +/- 0.000 Inclination: 0.76131 +/- 0.000 Eccentricity: 0.02427627 +/- 0.0000 Semi-Major Axis: 43.72900623 +/- 0.0000 Time of Perihelion: 2461837.8954 +/- 0.0 Perihelion: 42.66742919 +/- 0.0000 Aphelion: 44.79058326 +/- 0.0000 Period (y) 289.1762 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -42.72448624 +/- 0.0000 Ecliptic Y -3.46795393 +/- 0.0000 Ecliptic Z -0.26650604 +/- 0.0000 Ecliptic XDOT 0.00025180 +/- 0.0000 Ecliptic YDOT -0.00264104 +/- 0.0000 Ecliptic ZDOT 0.00003139 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.86583988 +/- 0.0000 Geocenter to KBO 41.86871658 +/- 0.0000 # Hcoef: 7.46
The following table shows the complete astrometric record for 468422. 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 (468422) followed by the observatory code and reference code for the source of the astrometry.
2000 03 27.31524 12 16 15.17 -02 09 24.9 468422 568 Cb2555 2000 03 27.35824 12 16 14.97 -02 09 23.4 468422 568 Cb2555 2000 03 29.36495 12 16 06.15 -02 08 26.2 23.4R 468422 568 Cb2555 2000 03 29.40952 12 16 05.94 -02 08 25.1 23.0R 468422 568 Cb2555 2000 03 29.45079 12 16 05.77 -02 08 24.0 23.3R 468422 568 Cb2555 2000 03 30.35311 12 16 01.83 -02 07 57.3 23.5R 468422 568 Cb2555 2000 03 30.37477 12 16 01.73 -02 07 56.8 23.4R 468422 568 Cb2555 2000 06 23.89804 12 12 38.17 -01 45 10.1 468422 950 Cb7658 2000 06 24.90754 12 12 38.91 -01 45 15.0 468422 950 Cb6951 2000 06 25.90006 12 12 39.73 -01 45 19.6 468422 950 Cb6951 2000 06 26.90076 12 12 40.64 -01 45 25.1 468422 950 Cb6951 2001 01 30.22288 12 24 32.83 -03 01 56.4 23.5R 468422 809 Cc6643 2001 01 30.32304 12 24 32.60 -03 01 54.6 23.4R 468422 809 Cc6643 2001 01 30.36207 12 24 32.52 -03 01 54.2 23.6R 468422 809 Cc6643 2001 01 31.23874 12 24 30.68 -03 01 42.6 23.3R 468422 809 Cc6643 2001 02 16.14256 12 23 47.62 -02 57 09.1 468422 950 Cc6643 2001 02 16.18052 12 23 47.51 -02 57 08.2 468422 950 Cc6643 2001 02 17.10530 12 23 44.49 -02 56 48.8 23.9R 468422 950 Cc6643 2002 02 10.20351 12 28 59.44 -03 29 34.5 23.4R 468422 304 Ce8748 2002 02 10.28575 12 28 59.22 -03 29 33.1 468422 304 Ce8748 2013 03 12.37101 13 21 55.08 -08 47 10.8 23.6R 468422 695 C~0uco 2013 03 12.44552 13 21 54.81 -08 47 09.5 468422 695 C~0uco 2013 03 13.37191 13 21 51.30 -08 46 48.4 468422 695 C~0uco 2015 02 20.47426 13 33 02.748 -09 50 21.73 23.9r 468422 568 C~1tf7 2015 03 20.52388 13 31 32.550 -09 41 35.85 23.6r 468422 568 C~1tf7 2015 04 14.46499 13 29 44.786 -09 31 03.52 23.8r 468422 568 C~1tf7 2015 04 18.42564 13 29 26.988 -09 29 18.45 23.5r 468422 568 C~1tf7 2015 04 18.47335 13 29 26.772 -09 29 17.21 23.5r 468422 568 C~1tf7 2015 05 16.27210 13 27 30.261 -09 17 47.25 23.7r 468422 568 C~1tf7 2015 06 21.325932 13 25 56.709 -09 08 24.67 468422 568 C~1tf7 2015 07 12.276492 13 25 48.165 -09 07 27.31 468422 568 C~1tf7 2015 07 15.266698 13 25 50.035 -09 07 37.36 468422 568 C~1tf7
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 0.38 0.00 -0.14
2 0.0001 0.00 0.26 0.00 0.13
3 0.0056 0.00 0.08 0.00 -0.12
4 0.0057 0.00 -0.09 0.00 -0.29
5 0.0058 0.00 0.13 0.00 -0.37
6 0.0083 0.00 0.18 0.00 0.54
7 0.0084 0.00 0.13 0.00 0.42
8 0.2425 0.00 0.25 0.00 0.92
9 0.2453 0.00 0.07 0.00 0.19
10 0.2480 0.00 0.01 0.00 0.23
11 0.2507 0.00 -0.05 0.00 -0.05
12 0.8457 0.00 -0.02 0.00 -0.33
13 0.8460 0.00 -0.26 0.00 0.16
14 0.8461 0.00 -0.20 0.00 0.05
15 0.8485 0.00 -0.17 0.00 -0.03
16 0.8921 0.00 -0.21 0.00 -0.17
17 0.8922 0.00 0.02 0.00 -0.05
18 0.8947 0.00 -0.21 0.00 0.10
19 1.8751 0.00 -0.26 0.00 -0.70
20 1.8753 0.00 -0.08 0.00 -0.73
21 12.9584 0.00 0.14 0.00 0.19
22 12.9586 0.00 0.35 0.00 -0.18
23 12.9611 0.00 -0.06 0.00 0.11
24 14.9026 0.00 0.08 0.00 0.04
25 14.9794 0.00 -0.08 0.00 -0.09
26 15.0476 0.00 -0.13 0.00 -0.18
27 15.0585 0.00 -0.11 0.00 0.02
28 15.0586 0.00 -0.08 0.00 -0.00
29 15.1347 0.00 -0.10 0.00 -0.09
30 15.2334 0.00 0.01 0.00 0.33
31 15.2908 0.00 -0.16 0.00 0.13
32 15.2990 0.00 0.25 0.00 -0.08
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.
468422 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.709 43.709 43.709 ecceobj 0.024 0.024 0.024 incobj 0.761 0.761 0.761 qmin 42.085 42.077 42.097 qmax 46.084 46.101 46.060 amean 43.996 43.995 43.996 amin 43.655 43.653 43.659 amax 44.336 44.338 44.335 emean 0.025 0.025 0.025 emin 0.008 0.008 0.008 emax 0.040 0.040 0.040 imean 2.327 2.327 2.327 imin 1.671 1.670 1.671 imax 2.887 2.887 2.887 excite_mean 0.048 0.048 0.048 fracstop 1.000 1.000 1.000 cjmean 3.099 3.099 3.099 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 170.1 170.0 170.0 kozaiamp 180.0 180.0 180.0