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: 469438
# Created Fri Apr 19 01:07:55 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 78 observations of 78
# Arc: 17.82y
# First observation: 2002/04/06
# Last observation: 2020/01/30
# Chi-squared of fit: 212.64 DOF: 150 RMS: 0.29
# Min/Max residuals: -1.50 0.87
# Exact a, adot, b, bdot, g, gdot:
1.508192E-05 2.559304E-02 -2.691627E-06 -6.819174E-05 2.506285E-02 -1.689311E-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
2.213885 153.212696 -0.685126 0.028258 -0.731844 2452370.522113
# Heliocentric elements and errors
Epoch: 2452370.5000 = 2002/04/06
Mean Anomaly: 333.02581 +/- 0.000
Argument of Peri: 127.46421 +/- 0.000
Long of Asc Node: 59.11911 +/- 0.000
Inclination: 2.18187 +/- 0.000
Eccentricity: 0.09390761 +/- 0.0000
Semi-Major Axis: 44.25101800 +/- 0.0000
Time of Perihelion: 2460426.6818 +/- 0.0
Perihelion: 40.09551059 +/- 0.0000
Aphelion: 48.40652542 +/- 0.0000
Period (y) 294.3697 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -36.55340224 +/- 0.0000
Ecliptic Y 17.69200874 +/- 0.0000
Ecliptic Z 1.54118886 +/- 0.0000
Ecliptic XDOT -0.00110401 +/- 0.0000
Ecliptic YDOT -0.00258007 +/- 0.0000
Ecliptic ZDOT -0.00001435 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 40.63909562 +/- 0.0000
Geocenter to KBO 39.89976507 +/- 0.0000
# Hcoef: 6.36
The following table shows the complete astrometric record for 469438. 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 (469438) followed by the observatory code and reference code for the source of the astrometry.
2002 04 06.02137 10 23 51.47 +12 23 26.9 21.1R 469438 807 Cf5153 2002 04 06.11054 10 23 51.18 +12 23 28.2 469438 807 Cf5153 2002 04 07.01038 10 23 48.18 +12 23 43.3 469438 807 Cf5154 2002 04 07.09886 10 23 47.86 +12 23 44.4 469438 807 Cf5154 2002 04 07.99899 10 23 44.95 +12 23 59.1 469438 807 Cf5154 2002 04 08.07532 10 23 44.71 +12 24 00.3 469438 807 Cf5154 2002 04 08.99446 10 23 41.79 +12 24 14.4 469438 807 Cf5154 2002 04 09.08322 10 23 41.49 +12 24 15.7 469438 807 Cn6494 2003 03 31.155945 10 29 49.44 +11 48 59.3 22.4V 469438 645 C~1PqY 2003 03 31.156774 10 29 49.44 +11 48 59.3 22.8V 469438 645 C~1PqY 2003 03 31.159262 10 29 49.43 +11 48 59.4 24.0V 469438 645 C~1PqY 2004 02 17.12059 10 38 37.73 +10 57 31.1 21.4R 469438 493 Cs6855 2004 02 17.12751 10 38 37.68 +10 57 31.1 21.6R 469438 493 Cs6855 2004 02 17.13444 10 38 37.67 +10 57 31.4 21.3R 469438 493 Cs6855 2004 02 18.01737 10 38 33.52 +10 57 56.6 21.5R 469438 493 Cs6855 2004 02 18.06765 10 38 33.28 +10 57 57.9 21.6R 469438 493 Cs6856 2004 02 18.10836 10 38 33.08 +10 57 59.2 21.4R 469438 493 Cs6856 2004 02 18.14907 10 38 32.89 +10 58 00.5 21.2R 469438 493 Cs6856 2004 02 18.18603 10 38 32.72 +10 58 01.4 21.5R 469438 493 Cs6856 2006 05 24.150941 10 44 42.51 +10 16 54.1 469438 645 C~1PqY 2006 05 24.151771 10 44 42.51 +10 16 54.1 469438 645 C~1PqY 2006 05 24.154258 10 44 42.51 +10 16 54.1 469438 645 C~1PqY 2007 02 21.38988 10 55 03.78 +09 16 35.5 22.1R 469438 695 Cu2959 2007 02 21.49314 10 55 03.20 +09 16 39.2 469438 695 Cu2959 2008 03 03.22472 10 59 48.31 +08 46 39.2 469438 695 Cy7588 2008 03 03.33063 10 59 47.78 +08 46 42.5 469438 695 Cy7588 2008 04 04.21730 10 57 25.45 +09 00 43.9 22.5R 469438 688 Cy5685 2008 04 04.32081 10 57 25.01 +09 00 45.9 469438 688 Cy5685 2008 06 08.02081 10 55 48.33 +09 07 15.3 469438 807 Cz1369 2008 06 08.06631 10 55 48.38 +09 07 15.0 469438 807 Cz1369 2008 06 08.97233 10 55 49.63 +09 07 04.2 469438 807 Cz1369 2008 06 09.04019 10 55 49.69 +09 07 04.0 469438 807 Cz1369 2011 03 02.14515 11 16 36.524 +06 58 32.75 469438 309 C~0Wz6 2011 03 02.14699 11 16 36.522 +06 58 33.26 469438 309 C~0Wz6 2011 03 02.14903 11 16 36.560 +06 58 33.48 469438 309 C~0Wz6 2011 03 02.15113 11 16 36.521 +06 58 34.29 469438 309 C~0Wz6 2011 03 02.15311 11 16 36.532 +06 58 33.17 469438 309 C~0Wz6 2011 03 02.15804 11 16 36.509 +06 58 33.04 469438 309 C~0Wz6 2011 03 02.17211 11 16 36.443 +06 58 33.64 469438 309 C~0Wz6 2011 03 02.17391 11 16 36.427 +06 58 33.91 469438 309 C~0Wz6 2011 03 02.17574 11 16 36.437 +06 58 34.22 469438 309 C~0Wz6 2011 03 02.17833 11 16 36.409 +06 58 33.97 469438 309 C~0Wz6 2011 03 02.18133 11 16 36.363 +06 58 34.23 469438 309 C~0Wz6 2011 03 02.18432 11 16 36.370 +06 58 34.26 469438 309 C~0Wz6 2011 03 02.18731 11 16 36.354 +06 58 34.38 469438 309 C~0Wz6 2011 04 02.29940 11 14 13.805 +07 13 11.32 22.7w 469438 F51 C~1vV8 2011 04 02.31452 11 14 13.766 +07 13 11.47 22.6w 469438 F51 C~1vV8 2011 04 02.34581 11 14 13.617 +07 13 12.89 22.9w 469438 F51 C~1vV8 2013 02 06.20844 11 29 21.04 +05 34 27.1 22.6R 469438 304 C~0snY 2013 02 06.30635 11 29 20.65 +05 34 29.9 469438 304 C~0snY 2013 02 07.22991 11 29 17.20 +05 34 53.6 469438 304 C~0snY 2013 02 07.32001 11 29 16.85 +05 34 56.0 469438 304 C~0snY 2013 02 07.37468 11 29 16.65 +05 34 57.3 469438 304 C~0snY 2013 02 08.33696 11 29 12.99 +05 35 22.8 469438 304 C~0snY 2013 02 08.37604 11 29 12.84 +05 35 23.5 469438 304 C~0snY 2013 02 14.33376 11 28 49.09 +05 38 04.4 469438 304 C~0snY 2013 02 14.35969 11 28 48.98 +05 38 05.0 469438 304 C~0snY 2013 02 14.38122 11 28 48.88 +05 38 05.7 469438 304 C~0snY 2014 02 28.40694 11 33 21.285 +05 07 45.47 22.6w 469438 F51 C~1vV8 2014 02 28.41930 11 33 21.198 +05 07 46.32 22.3w 469438 F51 C~1vV8 2014 02 28.44420 11 33 21.085 +05 07 46.85 22.7w 469438 F51 C~1vV8 2015 01 19.52862 11 41 16.204 +04 14 03.87 22.5w 469438 F51 C~1vV8 2015 01 19.54212 11 41 16.166 +04 14 04.38 22.7w 469438 F51 C~1vV9 2015 01 19.56925 11 41 16.101 +04 14 04.41 22.8w 469438 F51 C~1vV9 2015 02 16.45652 11 39 46.462 +04 24 40.82 22.6w 469438 F51 C~1vV9 2015 02 16.48238 11 39 46.347 +04 24 41.53 22.8w 469438 F51 C~1vV9 2015 02 16.49532 11 39 46.295 +04 24 42.07 22.8w 469438 F51 C~1vV9 2015 03 23.16795 11 37 09.67 +04 41 44.1 22.5R 469438 695 C~1Q3C 2015 03 23.23218 11 37 09.37 +04 41 45.9 469438 695 C~1Q3C 2015 03 23.29146 11 37 09.08 +04 41 47.8 469438 695 C~1Q3C 2018 04 24.36214 11 51 30.37 +03 03 08.3 22.2z 469438 T09 C~7d2y 2018 04 24.39066 11 51 30.24 +03 03 08.8 22.5z 469438 T09 C~7d2y 2018 04 24.40683 11 51 30.21 +03 03 09.1 22.3z 469438 T09 C~7d2y 2018 04 24.43452 11 51 30.09 +03 03 09.6 22.4z 469438 T09 C~7d2y 2018 04 24.43720 11 51 30.09 +03 03 09.6 22.5z 469438 T09 C~7d2y 2018 04 24.49071 11 51 29.90 +03 03 10.9 22.3z 469438 T09 C~7d2y 2020 01 30.596887 12 08 16.716 +01 10 11.40 22.9G 469438 T12 C~3n7D 2020 01 30.648995 12 08 16.585 +01 10 12.38 22.9G 469438 T12 C~3n7D
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 0.41 0.00 0.43
2 0.0002 0.00 0.64 0.00 0.24
3 0.0027 0.00 0.24 0.00 0.58
4 0.0030 0.00 -0.10 0.00 0.24
5 0.0054 0.00 -0.04 0.00 0.56
6 0.0056 0.00 0.12 0.00 0.55
7 0.0081 0.00 0.04 0.00 0.37
8 0.0084 0.00 -0.17 0.00 0.30
9 0.9833 0.00 -0.04 0.00 -0.49
10 0.9833 0.00 0.01 0.00 -0.50
11 0.9833 0.00 0.01 0.00 -0.45
12 1.8675 0.00 0.03 0.00 0.01
13 1.8675 0.00 -0.23 0.00 -0.18
14 1.8675 0.00 0.11 0.00 -0.08
15 1.8699 0.00 0.01 0.00 0.04
16 1.8701 0.00 0.02 0.00 -0.09
17 1.8702 0.00 -0.06 0.00 0.06
18 1.8703 0.00 0.00 0.00 0.20
19 1.8704 0.00 0.09 0.00 0.06
20 4.1318 0.00 0.16 0.00 -0.26
21 4.1318 0.00 0.16 0.00 -0.25
22 4.1318 0.00 0.15 0.00 -0.24
23 4.8799 0.00 -0.13 0.00 -0.35
24 4.8801 0.00 -1.50 0.00 0.35
25 5.9088 0.00 0.12 0.00 -0.31
26 5.9091 0.00 -0.18 0.00 -0.11
27 5.9964 0.00 0.33 0.00 -0.11
28 5.9967 0.00 -0.10 0.00 -0.38
29 6.1739 0.00 -0.44 0.00 -0.52
30 6.1740 0.00 -0.55 0.00 -0.28
31 6.1765 0.00 -0.36 0.00 -0.31
32 6.1766 0.00 -0.82 0.00 0.32
33 8.9038 0.00 -0.42 0.00 -0.49
34 8.9038 0.00 -0.32 0.00 -0.03
35 8.9038 0.00 0.39 0.00 0.12
36 8.9038 0.00 -0.04 0.00 0.87
37 8.9039 0.00 0.26 0.00 -0.31
38 8.9039 0.00 0.27 0.00 -0.58
39 8.9039 0.00 0.28 0.00 -0.40
40 8.9039 0.00 0.17 0.00 -0.19
41 8.9039 0.00 0.45 0.00 0.07
42 8.9039 0.00 0.22 0.00 -0.26
43 8.9039 0.00 -0.26 0.00 -0.09
44 8.9039 0.00 0.06 0.00 -0.15
45 8.9039 0.00 0.03 0.00 -0.12
46 8.9891 0.00 -0.07 0.00 -0.23
47 8.9892 0.00 0.32 0.00 -0.46
48 8.9893 0.00 0.10 0.00 0.19
49 10.8397 0.00 0.26 0.00 0.04
50 10.8399 0.00 -0.02 0.00 0.33
51 10.8425 0.00 -0.00 0.00 0.25
52 10.8427 0.00 -0.05 0.00 0.31
53 10.8429 0.00 0.11 0.00 0.20
54 10.8455 0.00 0.09 0.00 0.60
55 10.8456 0.00 0.13 0.00 0.27
56 10.8619 0.00 -0.00 0.00 0.07
57 10.8620 0.00 -0.02 0.00 -0.05
58 10.8620 0.00 -0.16 0.00 0.05
59 11.8998 0.00 0.24 0.00 -0.26
60 11.8998 0.00 -0.21 0.00 0.22
61 11.8999 0.00 -0.17 0.00 0.01
62 12.7899 0.00 0.14 0.00 -0.18
63 12.7899 0.00 0.03 0.00 0.10
64 12.7900 0.00 -0.01 0.00 -0.33
65 12.8664 0.00 -0.03 0.00 -0.11
66 12.8664 0.00 -0.15 0.00 -0.12
67 12.8665 0.00 -0.12 0.00 0.07
68 12.9614 0.00 0.19 0.00 0.25
69 12.9616 0.00 0.22 0.00 0.17
70 12.9617 0.00 0.05 0.00 0.35
71 16.0502 0.00 0.11 0.00 0.22
72 16.0503 0.00 -0.27 0.00 0.12
73 16.0503 0.00 0.17 0.00 0.08
74 16.0504 0.00 -0.11 0.00 -0.00
75 16.0504 0.00 0.03 0.00 -0.06
76 16.0506 0.00 0.10 0.00 0.12
77 17.8195 0.00 -0.06 0.00 0.01
78 17.8197 0.00 -0.02 0.00 0.03
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.
469438 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.911 43.911 43.911 ecceobj 0.088 0.088 0.088 incobj 2.182 2.182 2.182 qmin 39.231 39.231 39.261 qmax 49.240 49.251 49.185 amean 44.080 44.080 44.080 amin 43.725 43.718 43.729 amax 44.478 44.480 44.461 emean 0.089 0.089 0.089 emin 0.072 0.072 0.072 emax 0.107 0.107 0.107 imean 1.221 1.221 1.221 imin 0.278 0.278 0.278 imax 1.995 1.995 1.996 excite_mean 0.092 0.092 0.092 fracstop 1.000 1.000 1.000 cjmean 3.092 3.092 3.092 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 173.9 173.9 174.0 kozaiamp 180.0 180.0 180.0