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: 500883
# Created Sun Dec 22 02:07:14 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 73 observations of 73
# Arc: 9.04y
# First observation: 2011/06/06
# Last observation: 2020/06/21
# Chi-squared of fit: 78.01 DOF: 140 RMS: 0.18
# Min/Max residuals: -0.71 0.56
# Exact a, adot, b, bdot, g, gdot:
1.387345E-05 2.267825E-02 3.954835E-06 7.406855E-03 2.529302E-02 6.112498E-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
8.381649 -122.017155 -0.298280 0.141501 -0.960867 2455718.963819
# Heliocentric elements and errors
Epoch: 2455718.5000 = 2011/06/06
Mean Anomaly: 82.56695 +/- 0.000
Argument of Peri: 273.27280 +/- 0.000
Long of Asc Node: 214.95463 +/- 0.000
Inclination: 19.85754 +/- 0.000
Eccentricity: 0.25494180 +/- 0.0000
Semi-Major Axis: 39.26534972 +/- 0.0000
Time of Perihelion: 2435106.6774 +/- 0.0
Perihelion: 29.25497084 +/- 0.0000
Aphelion: 49.27572861 +/- 0.0000
Period (y) 246.0495 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -20.99495639 +/- 0.0000
Ecliptic Y -34.14628615 +/- 0.0000
Ecliptic Z 5.76331240 +/- 0.0000
Ecliptic XDOT 0.00179400 +/- 0.0000
Ecliptic YDOT -0.00175157 +/- 0.0000
Ecliptic ZDOT 0.00088968 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 40.49642463 +/- 0.0000
Geocenter to KBO 39.53648304 +/- 0.0000
# Hcoef: 7.36
The following table shows the complete astrometric record for 500883. 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 (500883) followed by the observatory code and reference code for the source of the astrometry.
2011 06 06.463053 15 50 32.277 -11 31 58.49 21.5G 500883 F51 C~42z6 2012 05 10.505588 15 58 11.657 -11 31 53.90 21.4G 500883 F51 C~42z6 2012 05 10.516211 15 58 11.644 -11 31 53.85 21.9G 500883 F51 C~42z6 2013 04 10.59305 16 05 44.228 -11 34 32.42 23.5r 500883 568 C~1XRf 2013 04 19.46408 16 05 11.678 -11 31 05.88 23.5r 500883 568 C~1XRf 2013 04 19.51699 16 05 11.462 -11 31 04.57 23.6r 500883 568 C~1XRf 2013 05 08.441995 16 03 48.253 -11 23 57.60 23.5G 500883 F51 C~42z6 2013 05 08.45126 16 03 48.186 -11 23 57.48 23.3r 500883 568 C~1XRf 2013 05 08.470168 16 03 48.121 -11 23 57.24 23.4G 500883 F51 C~42z6 2013 05 08.484305 16 03 48.038 -11 23 56.87 23.8G 500883 F51 C~42z6 2013 05 08.49533 16 03 47.978 -11 23 56.51 23.6r 500883 568 C~1XRf 2013 05 08.53916 16 03 47.764 -11 23 55.65 23.4r 500883 568 C~1XRf 2013 05 09.54622 16 03 42.955 -11 23 34.03 23.3r 500883 568 C~1XRf 2013 05 10.55178 16 03 38.128 -11 23 12.73 23.4r 500883 568 C~1XRf 2013 06 04.42264 16 01 35.992 -11 15 31.64 23.8r 500883 568 C~1XRf 2013 06 04.427705 16 01 35.982 -11 15 31.46 23.6G 500883 F51 C~42z6 2013 06 06.42067 16 01 26.360 -11 15 01.70 500883 568 C~1XRf 2013 06 06.44917 16 01 26.230 -11 15 01.16 500883 568 C~1XRf 2013 07 02.37291 15 59 34.772 -11 10 27.96 23.5r 500883 568 C~1XRf 2013 07 04.36382 15 59 27.648 -11 10 16.81 23.5r 500883 568 C~1XRf 2013 08 01.25882 15 58 18.943 -11 10 15.12 23.6r 500883 568 C~1XRf 2013 08 01.31670 15 58 18.880 -11 10 15.27 24.0r 500883 568 C~1XRf 2013 08 02.30664 15 58 17.643 -11 10 20.60 23.7r 500883 568 C~1XRf 2013 08 05.29659 15 58 14.463 -11 10 38.34 23.5r 500883 568 C~1XRf 2014 03 06.61642 16 12 06.467 -11 37 53.80 23.7r 500883 568 C~1XRf 2014 03 07.59105 16 12 06.265 -11 37 35.82 23.5r 500883 568 C~1XRf 2014 05 01.42971 16 09 42.689 -11 17 33.77 23.4r 500883 568 C~1XRf 2014 05 01.48091 16 09 42.457 -11 17 32.70 23.3r 500883 568 C~1XRf 2014 05 01.54140 16 09 42.182 -11 17 31.35 23.6r 500883 568 C~1XRf 2014 05 04.42726 16 09 29.188 -11 16 28.04 23.8r 500883 568 C~1XRf 2014 05 04.47771 16 09 28.950 -11 16 27.02 23.6r 500883 568 C~1XRf 2014 05 04.52933 16 09 28.709 -11 16 25.77 23.2r 500883 568 C~1XRf 2014 05 07.505690 16 09 14.981 -11 15 21.82 23.2G 500883 F51 C~42z6 2014 05 22.52578 16 08 02.460 -11 10 22.54 23.4r 500883 568 C~1XRf 2014 05 23.359754 16 07 58.344 -11 10 07.14 22.9G 500883 F51 C~42z6 2014 05 23.411201 16 07 58.112 -11 10 06.05 23.6G 500883 F51 C~42z6 2014 05 23.424105 16 07 58.024 -11 10 06.28 23.3G 500883 F51 C~42z6 2014 05 23.436953 16 07 57.971 -11 10 06.18 23.0G 500883 F51 C~42z6 2014 05 23.449814 16 07 57.885 -11 10 05.23 21.9G 500883 F51 C~42z6 2014 05 25.48500 16 07 47.853 -11 09 29.09 23.2r 500883 568 C~1XRf 2014 05 28.414791 16 07 33.378 -11 08 38.56 23.5G 500883 F51 C~42z6 2014 06 24.372837 16 05 28.161 -11 02 49.72 23.8G 500883 F51 C~42z6 2014 06 24.385662 16 05 28.109 -11 02 49.81 23.3G 500883 F51 C~42z6 2014 06 24.398487 16 05 28.039 -11 02 49.77 23.7G 500883 F51 C~42z6 2014 06 24.411287 16 05 27.974 -11 02 49.54 24.3G 500883 F51 C~42z6 2014 07 01.39490 16 05 00.175 -11 01 58.91 23.6r 500883 568 C~1XRf 2014 07 18.34503 16 04 05.594 -11 01 09.91 23.5r 500883 568 C~1XRf 2015 03 22.59933 16 17 04.877 -11 23 13.82 23.4r 500883 568 C~1XRf 2015 03 30.619488 16 16 49.540 -11 20 19.05 23.5G 500883 F51 C~42z6 2015 03 31.584914 16 16 47.309 -11 19 57.25 23.1G 500883 F51 C~42z6 2015 06 15.377504 16 11 26.565 -10 55 25.76 23.8G 500883 F51 C~42z6 2015 06 23.402983 16 10 50.959 -10 54 06.49 24.1G 500883 F51 C~42z6 2015 07 14.374200 16 09 33.572 -10 52 26.01 24.4G 500883 F51 C~42z6 2016 05 29.38051 16 17 58.748 -10 49 50.51 23.7w 500883 568 C~2LSW 2016 06 03.42065 16 17 34.163 -10 48 35.02 23.5w 500883 568 C~2LSW 2016 06 28.436630 16 15 40.983 -10 44 17.66 22.7G 500883 F51 C~42z6 2018 06 08.449399 16 27 30.645 -10 28 26.20 23.5G 500883 F51 C~42z6 2018 07 04.375480 16 25 36.544 -10 25 04.00 23.5G 500883 F51 C~42z6 2019 05 30.404774 16 33 19.245 -10 20 34.05 23.1G 500883 F51 C~42z6 2019 05 30.416840 16 33 19.153 -10 20 34.19 23.1G 500883 F51 C~42z6 2019 05 30.428919 16 33 19.089 -10 20 33.53 24.3G 500883 F51 C~42z6 2019 05 30.441017 16 33 19.056 -10 20 34.22 23.4G 500883 F51 C~42z6 2019 05 31.452187 16 33 14.173 -10 20 19.13 23.4G 500883 F51 C~42z6 2019 05 31.465111 16 33 14.088 -10 20 18.77 22.8G 500883 F51 C~42z6 2019 05 31.478056 16 33 14.012 -10 20 18.65 23.5G 500883 F51 C~42z6 2019 05 31.490955 16 33 13.987 -10 20 18.62 23.4G 500883 F51 C~42z6 2019 07 04.365628 16 30 40.599 -10 15 21.24 23.7G 500883 F51 C~42z6 2019 07 04.377544 16 30 40.536 -10 15 21.28 23.1G 500883 F51 C~42z6 2019 07 04.389434 16 30 40.485 -10 15 20.92 23.3G 500883 F51 C~42z6 2019 07 04.401290 16 30 40.402 -10 15 21.43 23.7G 500883 F51 C~42z6 2019 07 24.373549 16 29 34.562 -10 15 30.70 23.6G 500883 F51 C~42z6 2020 06 17.390098 16 36 50.087 -10 06 53.07 23.4G 500883 F51 C~42z6 2020 06 21.353510 16 36 32.050 -10 06 23.10 22.5G 500883 F51 C~42z6
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 0.09 0.00 0.12
2 0.9282 0.00 -0.04 0.00 0.20
3 0.9283 0.00 0.56 0.00 0.02
4 1.8457 0.00 -0.01 0.00 -0.00
5 1.8700 0.00 0.01 0.00 -0.05
6 1.8701 0.00 -0.03 0.00 0.03
7 1.9219 0.00 0.23 0.00 0.11
8 1.9219 0.00 -0.10 0.00 0.02
9 1.9220 0.00 0.30 0.00 -0.14
10 1.9220 0.00 0.08 0.00 -0.07
11 1.9221 0.00 -0.02 0.00 0.05
12 1.9222 0.00 -0.04 0.00 -0.04
13 1.9249 0.00 -0.10 0.00 0.02
14 1.9277 0.00 -0.15 0.00 -0.05
15 1.9958 0.00 -0.09 0.00 -0.06
16 1.9958 0.00 0.13 0.00 0.04
17 2.0013 0.00 -0.23 0.00 -0.29
18 2.0013 0.00 -0.09 0.00 -0.18
19 2.0723 0.00 0.05 0.00 0.04
20 2.0778 0.00 0.09 0.00 0.01
21 2.1541 0.00 -0.30 0.00 0.05
22 2.1543 0.00 -0.05 0.00 0.19
23 2.1570 0.00 -0.11 0.00 0.05
24 2.1652 0.00 -0.10 0.00 0.08
25 2.7492 0.00 0.15 0.00 0.03
26 2.7519 0.00 0.06 0.00 -0.04
27 2.9020 0.00 -0.07 0.00 -0.15
28 2.9022 0.00 -0.07 0.00 -0.21
29 2.9023 0.00 -0.08 0.00 -0.19
30 2.9102 0.00 -0.02 0.00 -0.04
31 2.9104 0.00 -0.07 0.00 -0.11
32 2.9105 0.00 -0.09 0.00 0.02
33 2.9187 0.00 0.02 0.00 0.03
34 2.9598 0.00 0.07 0.00 -0.06
35 2.9621 0.00 -0.16 0.00 0.08
36 2.9622 0.00 0.23 0.00 0.24
37 2.9622 0.00 -0.12 0.00 -0.22
38 2.9623 0.00 0.06 0.00 -0.36
39 2.9623 0.00 -0.27 0.00 0.36
40 2.9679 0.00 0.05 0.00 0.00
41 2.9759 0.00 -0.23 0.00 -0.18
42 3.0497 0.00 0.24 0.00 0.21
43 3.0498 0.00 0.28 0.00 0.01
44 3.0498 0.00 0.05 0.00 -0.06
45 3.0498 0.00 -0.11 0.00 0.06
46 3.0689 0.00 -0.09 0.00 -0.00
47 3.1154 0.00 0.03 0.00 -0.03
48 3.7923 0.00 -0.02 0.00 0.10
49 3.8143 0.00 -0.06 0.00 -0.12
50 3.8169 0.00 -0.22 0.00 0.19
51 4.0244 0.00 0.06 0.00 -0.19
52 4.0464 0.00 0.18 0.00 -0.13
53 4.1038 0.00 -0.21 0.00 0.53
54 4.9799 0.00 0.02 0.00 -0.01
55 4.9937 0.00 0.04 0.00 0.02
56 5.0622 0.00 0.42 0.00 0.24
57 7.0061 0.00 -0.14 0.00 -0.06
58 7.0771 0.00 0.35 0.00 0.09
59 7.9807 0.00 0.24 0.00 -0.02
60 7.9807 0.00 -0.25 0.00 -0.33
61 7.9807 0.00 -0.32 0.00 0.15
62 7.9808 0.00 0.08 0.00 -0.71
63 7.9835 0.00 0.25 0.00 -0.06
64 7.9836 0.00 -0.08 0.00 0.12
65 7.9836 0.00 -0.26 0.00 0.06
66 7.9836 0.00 0.32 0.00 -0.10
67 8.0764 0.00 0.33 0.00 0.09
68 8.0764 0.00 0.10 0.00 0.01
69 8.0765 0.00 0.05 0.00 0.33
70 8.0765 0.00 -0.49 0.00 -0.21
71 8.1312 0.00 0.13 0.00 0.07
72 9.0320 0.00 -0.01 0.00 0.28
73 9.0428 0.00 -0.35 0.00 0.14
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.
500883 quality flag:3 Type: 3:2E 3:2E 3:2E Type: 6:4II 6:4II 6:4II axisobj 39.158 39.158 39.158 ecceobj 0.255 0.255 0.255 incobj 19.880 19.880 19.880 qmin 28.256 28.257 28.255 qmax 51.085 51.083 51.084 amean 39.454 39.454 39.454 amin 39.099 39.099 39.099 amax 39.895 39.894 39.895 emean 0.252 0.252 0.252 emin 0.217 0.218 0.217 emax 0.281 0.281 0.281 imean 20.458 20.458 20.458 imin 19.279 19.279 19.279 imax 21.443 21.443 21.443 excite_mean 0.431 0.431 0.431 fracstop 1.000 1.000 1.000 cjmean 2.838 2.838 2.838 libcent 0 179.6 179.4 179.8 libamp 0 33.9 34.0 33.8 libcent 1 180.3 180.4 180.0 libamp 1 102.7 101.9 103.4 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 270.2 270.2 270.2 kozaiamp 25.7 25.7 25.7