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: 488644
# Created Sun Nov 24 02:07:08 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 80 observations of 80
# Arc: 14.00y
# First observation: 2003/04/26
# Last observation: 2017/04/25
# Chi-squared of fit: 76.78 DOF: 154 RMS: 0.17
# Min/Max residuals: -0.56 0.72
# Exact a, adot, b, bdot, g, gdot:
1.455636E-05 2.325000E-02 -4.559176E-06 -9.860858E-04 2.409662E-02 -1.033017E-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
0.857116 -163.787255 -0.339384 0.014181 -0.948004 2452755.827443
# Heliocentric elements and errors
Epoch: 2452756.5000 = 2003/04/27
Mean Anomaly: 283.50486 +/- 0.000
Argument of Peri: 241.33904 +/- 0.000
Long of Asc Node: 35.66881 +/- 0.000
Inclination: 2.57105 +/- 0.000
Eccentricity: 0.03434572 +/- 0.0000
Semi-Major Axis: 42.74434017 +/- 0.0000
Time of Perihelion: 2474445.9089 +/- 0.0
Perihelion: 41.27625496 +/- 0.0000
Aphelion: 44.21242537 +/- 0.0000
Period (y) 279.4642 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -40.66237165 +/- 0.0000
Ecliptic Y -12.17250803 +/- 0.0000
Ecliptic Z 0.62062009 +/- 0.0000
Ecliptic XDOT 0.00084248 +/- 0.0000
Ecliptic YDOT -0.00250923 +/- 0.0000
Ecliptic ZDOT -0.00011359 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 42.44979856 +/- 0.0000
Geocenter to KBO 41.49966186 +/- 0.0000
# Hcoef: 7.84
The following table shows the complete astrometric record for 488644. 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 (488644) followed by the observatory code and reference code for the source of the astrometry.
2003 04 26.32670 13 01 04.36 -05 35 06.4 22.8R 488644 568 Cq9882 2003 04 26.36890 13 01 04.16 -05 35 05.8 22.8R 488644 568 Cq9882 2003 04 26.41129 13 01 03.97 -05 35 04.7 23.1R 488644 568 Cq9882 2003 04 27.37821 13 00 59.96 -05 34 40.2 23.0R 488644 568 Cq9882 2003 05 30.28577 12 59 08.35 -05 23 53.0 488644 568 Cq9882 2003 05 30.33903 12 59 08.20 -05 23 52.5 488644 568 Cq9882 2003 05 30.38582 12 59 08.08 -05 23 51.8 488644 568 Cq9882 2004 03 29.52117 13 07 56.83 -06 20 54.6 488644 568 Cq9882 2004 03 29.54418 13 07 56.70 -06 20 54.2 488644 568 Cq9882 2004 03 29.57266 13 07 56.57 -06 20 53.3 488644 568 Cq9882 2004 04 15.31956 13 06 41.53 -06 13 21.9 488644 675 Cq9882 2004 04 16.27519 13 06 37.32 -06 12 56.7 488644 675 Cq9882 2004 04 16.34717 13 06 37.01 -06 12 54.8 488644 675 Cq9882 2004 04 16.39565 13 06 36.79 -06 12 53.4 488644 675 Cq9882 2005 07 09.19050 13 08 08.16 -06 27 54.0 488644 675 Cq9882 2005 07 11.19212 13 08 09.63 -06 28 06.7 488644 675 Cq9882 2007 07 11.96153 13 17 46.80 -07 33 53.1 488644 304 Cv1984 2007 07 12.05102 13 17 46.86 -07 33 53.5 488644 304 Cv1984 2015 04 24.23980 14 01 07.84 -12 10 32.2 23.4R 488644 G37 C~1ReC 2015 04 24.40910 14 01 07.03 -12 10 28.2 488644 G37 C~1ReC 2017 04 24.43355 14 11 26.71 -13 12 43.7 24.3r 488644 568 C~2F7n 2017 04 24.43460 14 11 26.72 -13 12 43.6 24.0r 488644 568 C~2F7n 2017 04 24.43565 14 11 26.71 -13 12 43.6 23.8r 488644 568 C~2F7n 2017 04 24.43670 14 11 26.70 -13 12 43.5 24.3r 488644 568 C~2F7n 2017 04 24.43775 14 11 26.70 -13 12 43.5 23.6r 488644 568 C~2F7n 2017 04 24.43879 14 11 26.69 -13 12 43.5 24.1r 488644 568 C~2F7n 2017 04 24.44116 14 11 26.68 -13 12 43.5 24.3r 488644 568 C~2F7n 2017 04 24.44221 14 11 26.67 -13 12 43.4 23.7r 488644 568 C~2F7n 2017 04 24.44326 14 11 26.67 -13 12 43.4 23.7r 488644 568 C~2F7n 2017 04 24.44535 14 11 26.65 -13 12 43.4 24.0r 488644 568 C~2F7n 2017 04 24.44850 14 11 26.64 -13 12 43.2 23.7r 488644 568 C~2F7n 2017 04 24.44955 14 11 26.63 -13 12 43.2 24.1r 488644 568 C~2F7n 2017 04 24.45059 14 11 26.63 -13 12 43.2 23.9r 488644 568 C~2F7n 2017 04 24.45164 14 11 26.62 -13 12 43.1 24.4r 488644 568 C~2F7n 2017 04 24.45269 14 11 26.62 -13 12 43.1 23.9r 488644 568 C~2F7n 2017 04 24.45504 14 11 26.61 -13 12 43.1 24.0r 488644 568 C~2F7n 2017 04 24.45609 14 11 26.60 -13 12 43.1 24.0r 488644 568 C~2F7n 2017 04 24.45714 14 11 26.60 -13 12 43.0 23.4r 488644 568 C~2F7n 2017 04 24.45819 14 11 26.60 -13 12 43.0 23.8r 488644 568 C~2F7n 2017 04 24.45924 14 11 26.59 -13 12 43.0 23.6r 488644 568 C~2F7n 2017 04 24.46029 14 11 26.59 -13 12 42.9 23.8r 488644 568 C~2F7n 2017 04 24.55484 14 11 26.13 -13 12 40.7 24.1r 488644 568 C~2F7n 2017 04 24.55697 14 11 26.12 -13 12 40.6 23.8r 488644 568 C~2F7n 2017 04 24.55907 14 11 26.12 -13 12 40.8 23.9r 488644 568 C~2F7n 2017 04 24.56326 14 11 26.10 -13 12 40.6 23.6r 488644 568 C~2F7n 2017 04 24.56430 14 11 26.10 -13 12 40.4 23.6r 488644 568 C~2F7n 2017 04 24.56536 14 11 26.08 -13 12 40.5 23.6r 488644 568 C~2F7n 2017 04 24.56641 14 11 26.09 -13 12 40.3 23.8r 488644 568 C~2F7n 2017 04 24.56746 14 11 26.07 -13 12 40.4 23.4r 488644 568 C~2F7n 2017 04 24.57110 14 11 26.06 -13 12 40.4 23.9r 488644 568 C~2F7n 2017 04 24.57320 14 11 26.04 -13 12 40.2 24.2r 488644 568 C~2F7n 2017 04 24.57529 14 11 26.04 -13 12 40.1 23.6r 488644 568 C~2F7n 2017 04 24.57638 14 11 26.04 -13 12 40.2 23.7r 488644 568 C~2F7n 2017 04 24.57743 14 11 26.03 -13 12 40.1 23.6r 488644 568 C~2F7n 2017 04 24.57847 14 11 26.01 -13 12 40.3 24.1r 488644 568 C~2F7n 2017 04 25.34061 14 11 22.46 -13 12 22.3 23.3r 488644 568 C~2F7n 2017 04 25.34166 14 11 22.45 -13 12 22.1 23.4r 488644 568 C~2F7n 2017 04 25.34270 14 11 22.46 -13 12 22.2 23.8r 488644 568 C~2F7n 2017 04 25.34375 14 11 22.44 -13 12 22.4 24.0r 488644 568 C~2F7n 2017 04 25.34480 14 11 22.44 -13 12 22.1 23.8r 488644 568 C~2F7n 2017 04 25.34612 14 11 22.42 -13 12 22.0 24.1r 488644 568 C~2F7n 2017 04 25.34717 14 11 22.43 -13 12 22.1 23.5r 488644 568 C~2F7n 2017 04 25.36212 14 11 22.36 -13 12 21.9 23.8r 488644 568 C~2F7n 2017 04 25.36316 14 11 22.36 -13 12 21.6 23.9r 488644 568 C~2F7n 2017 04 25.36421 14 11 22.35 -13 12 21.6 24.3r 488644 568 C~2F7n 2017 04 25.36527 14 11 22.35 -13 12 21.6 24.1r 488644 568 C~2F7n 2017 04 25.36631 14 11 22.34 -13 12 21.4 24.3r 488644 568 C~2F7n 2017 04 25.36736 14 11 22.34 -13 12 21.5 24.5r 488644 568 C~2F7n 2017 04 25.36841 14 11 22.33 -13 12 21.5 24.9r 488644 568 C~2F7n 2017 04 25.36946 14 11 22.33 -13 12 21.5 24.5r 488644 568 C~2F7n 2017 04 25.37050 14 11 22.32 -13 12 21.5 24.5r 488644 568 C~2F7n 2017 04 25.37182 14 11 22.31 -13 12 21.4 24.6r 488644 568 C~2F7n 2017 04 25.37392 14 11 22.30 -13 12 21.4 24.1r 488644 568 C~2F7n 2017 04 25.37497 14 11 22.29 -13 12 21.5 23.9r 488644 568 C~2F7n 2017 04 25.37706 14 11 22.28 -13 12 21.3 24.1r 488644 568 C~2F7n 2017 04 25.37811 14 11 22.28 -13 12 21.2 24.3r 488644 568 C~2F7n 2017 04 25.37916 14 11 22.27 -13 12 21.2 24.0r 488644 568 C~2F7n 2017 04 25.38021 14 11 22.24 -13 12 21.1 24.1r 488644 568 C~2F7n 2017 04 25.38444 14 11 22.24 -13 12 21.2 23.9r 488644 568 C~2F7n 2017 04 25.38549 14 11 22.24 -13 12 21.2 24.1r 488644 568 C~2F7n
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 0.45 0.00 0.69
2 0.0001 0.00 0.15 0.00 0.24
3 0.0002 0.00 0.02 0.00 0.28
4 0.0029 0.00 0.44 0.00 0.72
5 0.0930 0.00 0.05 0.00 0.06
6 0.0931 0.00 -0.22 0.00 -0.15
7 0.0932 0.00 -0.28 0.00 -0.07
8 0.9259 0.00 0.04 0.00 -0.27
9 0.9260 0.00 -0.35 0.00 -0.49
10 0.9261 0.00 -0.38 0.00 -0.36
11 0.9719 0.00 -0.56 0.00 0.07
12 0.9745 0.00 0.03 0.00 -0.12
13 0.9747 0.00 0.25 0.00 -0.13
14 0.9749 0.00 0.23 0.00 -0.02
15 2.2036 0.00 0.47 0.00 -0.21
16 2.2091 0.00 -0.01 0.00 -0.28
17 4.2098 0.00 -0.39 0.00 -0.13
18 4.2101 0.00 -0.25 0.00 -0.06
19 11.9943 0.00 0.23 0.00 0.17
20 11.9947 0.00 0.10 0.00 0.04
21 13.9962 0.00 -0.08 0.00 -0.06
22 13.9962 0.00 0.15 0.00 0.02
23 13.9962 0.00 0.07 0.00 -0.01
24 13.9962 0.00 -0.00 0.00 0.07
25 13.9962 0.00 0.07 0.00 0.04
26 13.9962 0.00 -0.00 0.00 0.02
27 13.9962 0.00 0.02 0.00 -0.04
28 13.9962 0.00 -0.06 0.00 0.04
29 13.9962 0.00 0.02 0.00 0.01
30 13.9962 0.00 -0.13 0.00 -0.04
31 13.9962 0.00 -0.05 0.00 0.09
32 13.9962 0.00 -0.13 0.00 0.06
33 13.9962 0.00 -0.05 0.00 0.04
34 13.9962 0.00 -0.13 0.00 0.11
35 13.9962 0.00 -0.05 0.00 0.09
36 13.9962 0.00 -0.03 0.00 0.03
37 13.9962 0.00 -0.11 0.00 0.01
38 13.9963 0.00 -0.03 0.00 0.08
39 13.9963 0.00 0.04 0.00 0.06
40 13.9963 0.00 -0.03 0.00 0.03
41 13.9963 0.00 0.04 0.00 0.11
42 13.9965 0.00 -0.08 0.00 0.06
43 13.9965 0.00 -0.08 0.00 0.10
44 13.9965 0.00 0.07 0.00 -0.15
45 13.9965 0.00 0.07 0.00 -0.05
46 13.9965 0.00 0.14 0.00 0.13
47 13.9965 0.00 -0.08 0.00 0.00
48 13.9965 0.00 0.14 0.00 0.18
49 13.9966 0.00 -0.08 0.00 0.05
50 13.9966 0.00 0.03 0.00 -0.03
51 13.9966 0.00 -0.12 0.00 0.12
52 13.9966 0.00 0.03 0.00 0.17
53 13.9966 0.00 0.10 0.00 0.04
54 13.9966 0.00 0.03 0.00 0.12
55 13.9966 0.00 -0.20 0.00 -0.11
56 13.9987 0.00 0.01 0.00 -0.15
57 13.9987 0.00 -0.06 0.00 0.02
58 13.9987 0.00 0.16 0.00 -0.10
59 13.9987 0.00 -0.06 0.00 -0.33
60 13.9987 0.00 0.01 0.00 -0.05
61 13.9987 0.00 -0.19 0.00 0.02
62 13.9987 0.00 0.03 0.00 -0.11
63 13.9987 0.00 0.06 0.00 -0.26
64 13.9987 0.00 0.13 0.00 0.01
65 13.9987 0.00 0.06 0.00 -0.01
66 13.9987 0.00 0.13 0.00 -0.03
67 13.9987 0.00 0.06 0.00 0.14
68 13.9987 0.00 0.13 0.00 0.02
69 13.9987 0.00 0.06 0.00 -0.01
70 13.9987 0.00 0.13 0.00 -0.03
71 13.9988 0.00 0.06 0.00 -0.06
72 13.9988 0.00 0.00 0.00 0.01
73 13.9988 0.00 0.00 0.00 -0.04
74 13.9988 0.00 -0.07 0.00 -0.16
75 13.9988 0.00 -0.07 0.00 -0.01
76 13.9988 0.00 0.00 0.00 0.06
77 13.9988 0.00 -0.07 0.00 0.04
78 13.9988 0.00 -0.45 0.00 0.11
79 13.9988 0.00 -0.14 0.00 -0.09
80 13.9988 0.00 -0.07 0.00 -0.11
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.
488644 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 42.365 42.365 42.365 ecceobj 0.036 0.036 0.036 incobj 2.582 2.582 2.582 qmin 40.496 40.491 40.502 qmax 45.004 45.012 45.000 amean 42.656 42.656 42.656 amin 42.333 42.333 42.333 amax 42.988 42.991 42.990 emean 0.029 0.029 0.029 emin 0.005 0.005 0.005 emax 0.047 0.047 0.047 imean 1.885 1.885 1.885 imin 0.560 0.560 0.560 imax 2.745 2.745 2.745 excite_mean 0.044 0.044 0.044 fracstop 1.000 1.000 1.000 cjmean 3.083 3.083 3.083 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 186.1 185.8 185.9 kozaiamp 179.9 180.0 180.0