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: 474640 # Created Sun Nov 24 02:07:08 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 43 observations of 43 # Arc: 21.18y # First observation: 2000/09/26 # Last observation: 2021/12/01 # Chi-squared of fit: 52.74 DOF: 80 RMS: 0.20 # Min/Max residuals: -0.62 0.60 # Exact a, adot, b, bdot, g, gdot: 1.799406E-05 2.482974E-02 7.523867E-06 8.238217E-03 2.126568E-02 -2.687063E-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 -18.529012 23.077719 0.336644 -0.298348 -0.889600 2451813.878614 # Heliocentric elements and errors Epoch: 2451814.5000 = 2000/09/27 Mean Anomaly: 359.51677 +/- 0.000 Argument of Peri: 326.95537 +/- 0.000 Long of Asc Node: 66.12512 +/- 0.000 Inclination: 25.50363 +/- 0.000 Eccentricity: 0.86607952 +/- 0.0000 Semi-Major Axis: 353.34760220 +/- 0.0000 Time of Perihelion: 2455070.9871 +/- 0.0 Perihelion: 47.32047941 +/- 0.0000 Aphelion: 659.37472500 +/- 0.0000 Period (y) 6642.1920 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 42.01878188 +/- 0.0000 Ecliptic Y 17.54040102 +/- 0.0000 Ecliptic Z -14.94320961 +/- 0.0000 Ecliptic XDOT -0.00125221 +/- 0.0000 Ecliptic YDOT 0.00294946 +/- 0.0000 Ecliptic ZDOT 0.00111574 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 47.92236139 +/- 0.0000 Geocenter to KBO 47.02425612 +/- 0.0000 # Hcoef: 6.44
The following table shows the complete astrometric record for 474640. 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 (474640) followed by the observatory code and reference code for the source of the astrometry.
2000 09 26.377871 01 52 44.13 -08 15 48.2 474640 645 C~1dcI 2000 09 26.378700 01 52 44.12 -08 15 48.2 474640 645 C~1dcI 2000 09 26.381188 01 52 44.12 -08 15 48.2 474640 645 C~1dcI 2004 11 06.11000 02 08 41.12 -04 33 02.1 22.7R 474640 807 Cv6209 2004 11 06.12572 02 08 41.06 -04 33 02.3 22.2I 474640 807 Cv6209 2004 11 14.12217 02 08 09.66 -04 34 09.7 23.1R 474640 807 Cv6209 2004 11 14.13784 02 08 09.60 -04 34 09.7 22.2I 474640 807 Cv6209 2004 11 20.07277 02 07 47.38 -04 34 38.2 23.2R 474640 807 Cv6209 2004 11 20.08791 02 07 47.33 -04 34 38.3 22.2I 474640 807 Cv6209 2004 12 07.11150 02 06 51.48 -04 34 11.5 22.6R 474640 807 Cv6209 2004 12 07.12746 02 06 51.43 -04 34 11.3 22.4I 474640 807 Cv6209 2004 12 11.09186 02 06 40.59 -04 33 40.9 22.9R 474640 807 Cv6209 2004 12 11.10909 02 06 40.54 -04 33 40.8 22.3I 474640 807 Cv6209 2004 12 15.08650 02 06 30.64 -04 33 01.0 22.8R 474640 807 Cv6209 2004 12 15.11395 02 06 30.58 -04 33 00.8 22.2I 474640 807 Cv6209 2005 12 24.09730 02 10 48.32 -03 32 10.6 22.8R 474640 807 Cv6209 2005 12 24.11337 02 10 48.28 -03 32 10.3 22.4I 474640 807 Cv6209 2005 12 29.08601 02 10 40.03 -03 30 48.5 22.9R 474640 807 Cv6209 2005 12 29.11996 02 10 39.98 -03 30 48.0 22.5I 474640 807 Cv6209 2005 12 31.06909 02 10 37.25 -03 30 12.0 23.0R 474640 807 Cv6209 2007 11 08.29246 02 22 31.91 -01 34 02.1 474640 695 Cy4017 2007 11 08.33091 02 22 31.74 -01 34 02.4 474640 695 Cy4017 2008 10 24.35124 02 28 09.43 -00 30 37.5 23.0r 474640 695 C~0gMD 2008 10 24.45648 02 28 09.03 -00 30 39.4 23.1r 474640 695 C~0gMD 2008 11 03.20374 02 27 29.11 -00 33 01.0 24.2R 474640 250 S~06Al 2008 11 03.20999 02 27 29.09 -00 33 01.1 474640 250 S~06Al 2008 11 03.26971 02 27 28.84 -00 33 01.9 474640 250 S~06Al 2008 11 03.27666 02 27 28.83 -00 33 02.0 474640 250 S~06Al 2013 11 05.12314 02 50 44.54 +04 27 01.4 23.1r 474640 W84 C~2Jbt 2013 11 05.21663 02 50 44.14 +04 27 00.2 474640 W84 C~2Jbt 2013 11 05.27234 02 50 43.91 +04 26 59.6 474640 W84 C~2Jbt 2014 09 26.35536 02 57 51.19 +05 36 39.5 22.8R 474640 695 C~1LJN 2014 09 26.40091 02 57 51.05 +05 36 38.8 474640 695 C~1LJN 2014 09 26.44569 02 57 50.93 +05 36 38.0 474640 695 C~1LJN 2016 09 02.09514 03 07 52.51 +07 38 28.1 23.6r 474640 950 C~1zsc 2016 09 03.18233 03 07 51.41 +07 38 17.7 23.6r 474640 950 C~1zsc 2016 09 03.18923 03 07 51.40 +07 38 17.5 23.5r 474640 950 C~1zsc 2021 11 05.394860 03 28 00.996 +12 09 55.69 22.7G 474640 G37 C~5FPQ 2021 11 05.436570 03 28 00.816 +12 09 55.27 474640 G37 C~5FPQ 2021 11 05.478320 03 28 00.638 +12 09 54.91 474640 G37 C~5FPQ 2021 12 01.225760 03 26 12.944 +12 06 08.61 23.0G 474640 G37 C~5JsR 2021 12 01.275060 03 26 12.733 +12 06 08.03 474640 G37 C~5JsR 2021 12 01.324800 03 26 12.534 +12 06 07.79 474640 G37 C~5JsR
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 0.20 0.00 -0.23
2 0.0000 0.00 0.09 0.00 -0.21
3 0.0000 0.00 0.23 0.00 -0.15
4 4.1115 0.00 0.05 0.00 0.10
5 4.1116 0.00 0.11 0.00 0.06
6 4.1335 0.00 -0.10 0.00 -0.03
7 4.1335 0.00 -0.08 0.00 0.07
8 4.1497 0.00 -0.10 0.00 0.13
9 4.1498 0.00 -0.00 0.00 0.08
10 4.1964 0.00 -0.15 0.00 0.06
11 4.1964 0.00 -0.21 0.00 0.16
12 4.2073 0.00 -0.12 0.00 0.26
13 4.2073 0.00 -0.18 0.00 0.21
14 4.2182 0.00 -0.17 0.00 0.26
15 4.2183 0.00 -0.07 0.00 0.15
16 5.2422 0.00 0.08 0.00 0.05
17 5.2423 0.00 -0.06 0.00 0.11
18 5.2559 0.00 0.03 0.00 0.02
19 5.2560 0.00 0.06 0.00 -0.08
20 5.2613 0.00 -0.08 0.00 0.05
21 7.1154 0.00 -0.18 0.00 -0.53
22 7.1155 0.00 -0.35 0.00 -0.41
23 8.0766 0.00 -0.18 0.00 0.26
24 8.0769 0.00 0.32 0.00 0.05
25 8.1036 0.00 0.30 0.00 -0.07
26 8.1036 0.00 0.39 0.00 -0.09
27 8.1037 0.00 0.32 0.00 -0.13
28 8.1038 0.00 0.60 0.00 -0.14
29 13.1081 0.00 0.15 0.00 -0.03
30 13.1084 0.00 0.07 0.00 -0.04
31 13.1085 0.00 0.15 0.00 0.06
32 13.9986 0.00 0.12 0.00 0.23
33 13.9987 0.00 -0.02 0.00 0.25
34 13.9988 0.00 0.10 0.00 0.16
35 15.9335 0.00 -0.62 0.00 -0.19
36 15.9365 0.00 -0.27 0.00 0.09
37 15.9365 0.00 -0.30 0.00 -0.04
38 21.1089 0.00 0.17 0.00 0.04
39 21.1090 0.00 0.09 0.00 0.06
40 21.1091 0.00 0.04 0.00 0.14
41 21.1796 0.00 0.10 0.00 0.01
42 21.1797 0.00 -0.02 0.00 -0.25
43 21.1799 0.00 0.07 0.00 -0.17
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.
474640 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 357.026 357.020 357.032 ecceobj 0.867 0.867 0.867 incobj 25.508 25.508 25.508 qmin 44.110 44.118 44.120 qmax 666.721 666.710 666.733 amean 328.311 328.313 328.312 amin 313.131 312.734 313.102 amax 357.026 357.020 357.032 emean 0.856 0.856 0.856 emin 0.846 0.846 0.846 emax 0.867 0.867 0.867 imean 24.237 24.240 24.241 imin 23.411 23.416 23.418 imax 25.085 25.085 25.085 excite_mean 0.949 0.949 0.949 fracstop 1.000 1.000 1.000 cjmean 3.204 3.204 3.204 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 328.0 328.2 328.3 kozaiamp 2.1 2.3 2.4