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: 131697
# Created Sun Dec 22 02:06:54 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 73 observations of 73
# Arc: 22.25y
# First observation: 2001/12/11
# Last observation: 2024/03/13
# Chi-squared of fit: 95.58 DOF: 140 RMS: 0.20
# Min/Max residuals: -0.61 0.44
# Exact a, adot, b, bdot, g, gdot:
1.600361E-05 3.262702E-02 7.364141E-07 -1.318570E-03 3.005783E-02 -1.888381E-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
1.744763 107.397087 0.459127 0.026246 -0.864158 2452254.897773
# Heliocentric elements and errors
Epoch: 2452254.5000 = 2001/12/11
Mean Anomaly: 296.90515 +/- 0.000
Argument of Peri: 214.55230 +/- 0.000
Long of Asc Node: 323.23313 +/- 0.000
Inclination: 2.84933 +/- 0.000
Eccentricity: 0.07615894 +/- 0.0000
Semi-Major Axis: 35.18342898 +/- 0.0000
Time of Perihelion: 2465614.2127 +/- 0.0
Perihelion: 32.50389630 +/- 0.0000
Aphelion: 37.86296165 +/- 0.0000
Period (y) 208.6966 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -9.76178698 +/- 0.0000
Ecliptic Y 32.70032347 +/- 0.0000
Ecliptic Z 1.01296782 +/- 0.0000
Ecliptic XDOT -0.00279420 +/- 0.0000
Ecliptic YDOT -0.00104919 +/- 0.0000
Ecliptic ZDOT -0.00012507 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 34.14136032 +/- 0.0000
Geocenter to KBO 33.26926589 +/- 0.0000
# Hcoef: 8.26
The following table shows the complete astrometric record for 131697. 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 (131697) followed by the observatory code and reference code for the source of the astrometry.
2001 12 11.39703 07 16 24.21 +24 02 16.2 131697 568 Ce7056 2001 12 11.42052 07 16 24.07 +24 02 16.6 131697 568 Ce7056 2001 12 11.44368 07 16 23.95 +24 02 16.9 131697 568 Ce7056 2002 01 09.51211 07 13 22.22 +24 07 36.8 131697 568 Ce7056 2002 01 09.53762 07 13 22.01 +24 07 37.0 23.5R 131697 568 Ce7056 2003 12 24.46344 07 31 22.81 +23 23 23.4 23.1g 131697 568 Cq9107 2003 12 24.48664 07 31 22.68 +23 23 23.7 23.3g 131697 568 Cq9107 2003 12 24.50988 07 31 22.52 +23 23 24.1 23.6g 131697 568 Cq9107 2003 12 25.50403 07 31 16.47 +23 23 37.5 24.0g 131697 568 Cq9107 2004 04 15.19439 07 24 13.91 +23 33 49.8 131697 675 Cq9107 2004 04 15.23969 07 24 14.00 +23 33 49.3 131697 675 Cq9107 2005 01 08.35280 07 37 50.14 +23 04 04.1 23.5r 131697 568 Cq9107 2005 01 08.39064 07 37 49.89 +23 04 04.6 23.6r 131697 568 Cq9107 2005 01 08.42845 07 37 49.64 +23 04 05.2 23.4r 131697 568 Cq9107 2005 01 15.37575 07 37 04.49 +23 05 43.4 23.9r 131697 568 Cq9107 2006 01 29.32339 07 43 42.64 +22 44 45.3 131697 675 Cq9107 2006 01 29.32971 07 43 42.61 +22 44 45.2 131697 675 Cq9107 2006 01 29.42638 07 43 42.00 +22 44 46.6 131697 675 Cq9107 2006 01 29.43285 07 43 41.98 +22 44 46.6 131697 675 Cq9107 2011 01 30.469049 08 23 47.369 +20 21 11.44 22.8G 131697 F51 C~42Ep 2011 01 30.484294 08 23 47.285 +20 21 11.86 23.3G 131697 F51 C~42Ep 2011 01 30.500586 08 23 47.152 +20 21 12.18 22.9G 131697 F51 C~42Ep 2011 01 30.515680 08 23 47.058 +20 21 12.46 23.1G 131697 F51 C~42Ep 2012 02 13.306612 08 30 22.981 +19 52 25.63 23.2G 131697 F51 C~42Ep 2012 02 13.321144 08 30 22.871 +19 52 25.96 23.4G 131697 F51 C~42Ep 2012 02 13.335712 08 30 22.804 +19 52 25.54 22.8G 131697 F51 C~42Ep 2012 02 13.350300 08 30 22.708 +19 52 26.25 23.3G 131697 F51 C~42Ep 2013 03 13.12101 08 35 54.79 +19 25 56.6 22.6R 131697 695 C~0und 2013 03 13.19879 08 35 54.46 +19 25 57.8 131697 695 C~0und 2014 01 01.454071 08 50 32.824 +18 25 33.26 23.6G 131697 F51 C~42Ep 2014 02 23.267629 08 45 17.688 +18 45 21.16 23.0G 131697 F51 C~42Ep 2014 02 26.446286 08 45 00.364 +18 46 23.02 22.4G 131697 F51 C~42Ep 2014 03 06.437809 08 44 19.980 +18 48 45.22 23.1G 131697 F51 C~42Ep 2014 12 21.597871 08 59 17.719 +17 43 55.85 23.6G 131697 F51 C~42Ep 2014 12 21.611555 08 59 17.659 +17 43 56.00 22.6G 131697 F51 C~42Ep 2015 01 16.534249 08 57 03.416 +17 53 03.65 22.7G 131697 F51 C~42Ep 2015 01 16.546500 08 57 03.363 +17 53 03.92 23.5G 131697 F51 C~42Ep 2015 01 16.571089 08 57 03.220 +17 53 04.12 23.4G 131697 F51 C~42Ep 2015 02 16.302305 08 53 54.817 +18 05 24.74 23.4G 131697 F51 C~42Ep 2015 02 16.314677 08 53 54.718 +18 05 24.57 23.0G 131697 F51 C~42Ep 2015 02 17.326899 08 53 48.735 +18 05 48.08 22.6G 131697 F51 C~42Ep 2015 04 10.341098 08 50 21.976 +18 18 07.68 23.2G 131697 F51 C~42Ep 2016 01 31.404429 09 03 28.139 +17 19 52.43 23.8G 131697 F51 C~42Ep 2016 02 11.288288 09 02 20.901 +17 24 27.10 22.3G 131697 F51 C~42Ep 2016 04 28.302674 08 58 00.085 +17 40 34.04 23.8G 131697 F51 C~42Ep 2017 01 27.564566 09 11 39.326 +16 38 07.28 22.9G 131697 F51 C~42Ep 2017 02 04.519939 09 10 50.451 +16 41 36.29 23.6G 131697 F51 C~42Ep 2017 02 21.368594 09 09 08.538 +16 48 46.42 23.5G 131697 F51 C~42Ep 2017 02 22.278508 09 09 03.280 +16 49 08.16 24.0G 131697 F51 C~42Ep 2017 03 24.25073 09 06 38.849 +16 58 54.58 131697 568 C~2QJI 2017 03 29.27032 09 06 22.132 +16 59 58.72 131697 568 C~2QJI 2017 10 21.58529 09 22 42.781 +15 42 21.34 131697 568 C~2QJI 2017 10 21.61235 09 22 42.875 +15 42 20.87 131697 568 C~2QJI 2017 11 17.63836 09 23 35.785 +15 38 03.56 23.6w 131697 568 C~2X2r 2017 11 20.581398 09 23 36.192 +15 38 00.89 23.7G 131697 F51 C~42Ep 2017 11 21.52466 09 23 36.080 +15 38 00.89 23.7w 131697 568 C~2X2r 2017 12 23.61556 09 22 29.936 +15 42 55.81 23.5w 131697 568 C~2X2r 2018 01 14.591023 09 20 45.986 +15 50 44.66 23.7G 131697 F51 C~42Ep 2018 03 07.239036 09 15 43.397 +16 12 55.88 22.9G 131697 F51 C~42Ep 2018 03 07.250660 09 15 43.311 +16 12 56.18 22.8G 131697 F51 C~42Ep 2018 03 07.262286 09 15 43.245 +16 12 56.43 22.7G 131697 F51 C~42Ep 2019 01 06.653403 09 29 14.152 +15 04 36.27 24.5G 131697 F51 C~42Ep 2019 11 27.604496 09 38 44.115 +14 12 18.84 23.7G 131697 F51 C~42Ep 2019 12 03.524251 09 38 39.760 +14 12 35.58 22.9G 131697 F51 C~42Ep 2020 01 20.452732 09 35 47.698 +14 26 07.74 23.5G 131697 F51 C~42Ep 2020 01 22.415201 09 35 36.779 +14 27 00.14 23.4G 131697 F51 C~42Ep 2020 01 22.426075 09 35 36.700 +14 27 00.30 23.7G 131697 F51 C~42Ep 2020 01 22.436985 09 35 36.619 +14 27 00.77 23.9G 131697 F51 C~42Ep 2020 01 22.447961 09 35 36.588 +14 27 01.00 23.7G 131697 F51 C~42Ep 2020 01 23.443543 09 35 30.953 +14 27 27.61 24.0G 131697 F51 C~42Ep 2020 03 22.291925 09 30 01.408 +14 53 10.65 24.0G 131697 F51 C~42Ep 2024 03 13.131380 10 01 29.672 +11 46 23.67 23.0G 131697 G37 C~7wzW 2024 03 13.224030 10 01 29.195 +11 46 26.29 131697 G37 C~7wzW
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 0.22 0.00 -0.32
2 0.0001 0.00 0.12 0.00 -0.19
3 0.0001 0.00 0.30 0.00 -0.15
4 0.0797 0.00 0.43 0.00 -0.02
5 0.0798 0.00 -0.18 0.00 -0.08
6 2.0344 0.00 -0.29 0.00 -0.05
7 2.0345 0.00 -0.08 0.00 -0.06
8 2.0345 0.00 -0.32 0.00 0.04
9 2.0373 0.00 0.07 0.00 0.21
10 2.3430 0.00 0.09 0.00 0.08
11 2.3432 0.00 0.15 0.00 -0.06
12 3.0772 0.00 0.05 0.00 0.13
13 3.0773 0.00 0.03 0.00 0.08
14 3.0774 0.00 0.02 0.00 0.13
15 3.0965 0.00 -0.07 0.00 0.04
16 4.1340 0.00 -0.40 0.00 0.44
17 4.1340 0.00 -0.25 0.00 0.25
18 4.1342 0.00 -0.26 0.00 0.36
19 4.1343 0.00 0.05 0.00 0.27
20 9.1364 0.00 0.02 0.00 -0.19
21 9.1364 0.00 0.23 0.00 -0.07
22 9.1365 0.00 -0.20 0.00 -0.08
23 9.1365 0.00 -0.16 0.00 -0.10
24 10.1736 0.00 -0.01 0.00 0.05
25 10.1736 0.00 -0.34 0.00 0.09
26 10.1737 0.00 -0.03 0.00 -0.61
27 10.1737 0.00 -0.15 0.00 -0.19
28 11.2518 0.00 0.18 0.00 -0.06
29 11.2520 0.00 0.01 0.00 0.15
30 12.0577 0.00 -0.01 0.00 -0.31
31 12.2022 0.00 -0.20 0.00 -0.20
32 12.2109 0.00 -0.42 0.00 -0.08
33 12.2328 0.00 0.07 0.00 0.08
34 13.0272 0.00 -0.07 0.00 -0.35
35 13.0273 0.00 -0.09 0.00 -0.43
36 13.0983 0.00 -0.25 0.00 0.30
37 13.0983 0.00 0.06 0.00 0.28
38 13.0984 0.00 0.14 0.00 -0.10
39 13.1825 0.00 0.25 0.00 -0.10
40 13.1825 0.00 -0.12 0.00 -0.55
41 13.1853 0.00 0.13 0.00 -0.03
42 13.3277 0.00 0.12 0.00 -0.07
43 14.1383 0.00 0.11 0.00 -0.13
44 14.1681 0.00 0.35 0.00 -0.06
45 14.3789 0.00 0.03 0.00 -0.10
46 15.1298 0.00 0.07 0.00 -0.07
47 15.1516 0.00 0.29 0.00 -0.09
48 15.1977 0.00 -0.18 0.00 0.34
49 15.2002 0.00 -0.04 0.00 0.11
50 15.2823 0.00 -0.00 0.00 0.18
51 15.2960 0.00 0.14 0.00 -0.01
52 15.8609 0.00 0.15 0.00 0.03
53 15.8610 0.00 0.15 0.00 0.01
54 15.9350 0.00 0.07 0.00 0.04
55 15.9430 0.00 0.27 0.00 0.27
56 15.9456 0.00 0.07 0.00 0.14
57 16.0335 0.00 0.07 0.00 0.02
58 16.0936 0.00 0.09 0.00 0.06
59 16.2350 0.00 0.13 0.00 0.15
60 16.2351 0.00 -0.25 0.00 0.19
61 16.2351 0.00 -0.33 0.00 0.18
62 17.0712 0.00 -0.05 0.00 -0.13
63 17.9609 0.00 0.32 0.00 0.17
64 17.9771 0.00 0.21 0.00 -0.17
65 18.1083 0.00 -0.22 0.00 -0.14
66 18.1137 0.00 0.17 0.00 0.17
67 18.1137 0.00 -0.08 0.00 0.04
68 18.1137 0.00 -0.36 0.00 0.22
69 18.1138 0.00 0.12 0.00 0.15
70 18.1165 0.00 -0.02 0.00 -0.00
71 18.2776 0.00 0.30 0.00 0.36
72 22.2525 0.00 -0.47 0.00 -0.24
73 22.2528 0.00 -0.12 0.00 -0.22
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.
131697 quality flag:3 Type: 5:4E 5:4E 5:4E axisobj 35.048 35.048 35.048 ecceobj 0.073 0.073 0.073 incobj 2.857 2.857 2.857 qmin 31.440 31.430 31.440 qmax 38.709 38.757 38.737 amean 34.945 34.945 34.946 amin 34.630 34.625 34.628 amax 35.285 35.286 35.290 emean 0.079 0.079 0.079 emin 0.059 0.058 0.059 emax 0.098 0.099 0.099 imean 4.855 4.855 4.855 imin 3.410 3.410 3.409 imax 6.051 6.052 6.051 excite_mean 0.116 0.116 0.116 fracstop 1.000 1.000 1.000 cjmean 3.002 3.002 3.002 libcent 0 180.7 180.8 180.3 libamp 0 71.8 71.7 71.7 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 179.8 180.0 179.8 kozaiamp 180.0 180.0 180.0