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: 16EC366 # Created Tue Apr 1 01:10:44 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 34 observations of 34 # Arc: 18.91y # First observation: 2006/02/01 # Last observation: 2024/12/31 # Chi-squared of fit: 14.53 DOF: 62 RMS: 0.12 # Min/Max residuals: -0.28 0.25 # Exact a, adot, b, bdot, g, gdot: 1.414131E-05 2.196536E-02 -1.128400E-05 -1.679013E-02 2.335843E-02 -9.191352E-03 # Covariance matrix: 2.4281E-13 -1.8807E-14 -3.9771E-14 1.6628E-15 4.7171E-14 6.1764E-15 -1.8807E-14 1.6496E-15 1.4602E-15 -6.1959E-17 -3.0954E-15 -2.1491E-16 -3.9771E-14 1.4602E-15 2.0937E-13 -1.7080E-14 2.0426E-15 -5.8358E-15 1.6628E-15 -6.1959E-17 -1.7080E-14 1.5507E-15 -1.4540E-17 2.3857E-16 4.7171E-14 -3.0954E-15 2.0426E-15 -1.4540E-17 1.0411E-13 -1.2436E-15 6.1764E-15 -2.1491E-16 -5.8358E-15 2.3857E-16 -1.2436E-15 9.7729E-16 # lat0 lon0 xBary yBary zBary JD0 -1.229271 128.472725 -0.061617 -0.020958 -0.982540 2453767.912769 # Heliocentric elements and errors Epoch: 2453768.5000 = 2006/02/02 Mean Anomaly: 355.87348 +/- 0.002 Argument of Peri: 224.98114 +/- 0.000 Long of Asc Node: 306.98526 +/- 0.000 Inclination: 37.36957 +/- 0.000 Eccentricity: 0.76074894 +/- 0.0000 Semi-Major Axis: 161.80040897 +/- 0.0001 Time of Perihelion: 2462385.3598 +/- 3.3 Perihelion: 38.71091978 +/- 0.0003 Aphelion: 284.88989816 +/- 0.0004 Period (y) 2058.1529 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -27.29236252 +/- 0.0000 Ecliptic Y 34.23756834 +/- 0.0001 Ecliptic Z -0.91892564 +/- 0.0000 Ecliptic XDOT -0.00131630 +/- 0.0000 Ecliptic YDOT -0.00248425 +/- 0.0000 Ecliptic ZDOT -0.00194442 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 43.79442776 +/- 0.0001 Geocenter to KBO 42.81140061 +/- 0.0001 # Hcoef: 7.89
The following table shows the complete astrometric record for 16EC366. 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 (16EC366) followed by the observatory code and reference code for the source of the astrometry.
2006 02 01.412015 08 42 14.92 +16 57 28.0 16EC366 T14 C~8Djh 2006 02 01.498693 08 42 14.47 +16 57 28.9 16EC366 T14 C~8Djh 2007 01 15.406137 08 47 43.53 +15 38 40.0 16EC366 T14 C~8Djh 2007 01 15.434150 08 47 43.39 +15 38 40.0 16EC366 T14 C~8Djh 2007 01 15.467301 08 47 43.22 +15 38 40.4 16EC366 T14 C~8Djh 2016 01 09.489614 09 25 50.26 +03 03 31.3 16EC366 T09 C~8Djh 2016 02 08.43961 09 23 26.95 +03 06 43.1 24.1r 16EC366 T09 C~8eUp 2016 02 08.48548 09 23 26.73 +03 06 43.6 23.7r 16EC366 T09 C~8eUp 2016 02 08.51059 09 23 26.60 +03 06 43.9 23.4r 16EC366 T09 C~8eUp 2016 02 08.52379 09 23 26.54 +03 06 44.1 23.6r 16EC366 T09 C~8eUp 2016 02 12.27941 09 23 07.55 +03 07 33.3 23.5y 16EC366 T09 C~89T9 2016 02 12.30448 09 23 07.43 +03 07 33.7 23.3y 16EC366 T09 C~89T9 2016 02 12.30719 09 23 07.40 +03 07 33.7 23.5y 16EC366 T09 C~89T9 2016 03 04.34033 09 21 25.84 +03 13 13.4 23.9i 16EC366 T09 C~89T9 2016 03 04.35599 09 21 25.78 +03 13 13.5 23.9i 16EC366 T09 C~89T9 2016 03 04.36972 09 21 25.71 +03 13 13.7 23.6i 16EC366 T09 C~89T9 2016 03 04.38346 09 21 25.64 +03 13 14.2 23.8i 16EC366 T09 C~89T9 2016 03 04.39700 09 21 25.59 +03 13 14.2 23.6i 16EC366 T09 C~89T9 2016 03 04.40516 09 21 25.55 +03 13 14.5 23.8i 16EC366 T09 C~89T9 2016 03 04.41058 09 21 25.52 +03 13 14.7 24.5i 16EC366 T09 C~89T9 2016 03 07.34501 09 21 12.58 +03 14 07.2 24.4g 16EC366 T09 C~89T9 2016 03 07.36836 09 21 12.48 +03 14 07.7 24.8g 16EC366 T09 C~89T9 2016 03 07.41715 09 21 12.25 +03 14 08.4 24.6g 16EC366 T09 C~89T9 2016 03 07.42573 09 21 12.22 +03 14 08.6 24.3g 16EC366 T09 C~89T9 2017 01 28.406130 09 28 41.09 +01 33 56.3 16EC366 T09 C~8Djh 2017 02 01.48691 09 28 20.71 +01 34 32.8 23.5i 16EC366 T09 C~8Djh 2017 02 01.48963 09 28 20.69 +01 34 33.2 23.4i 16EC366 T09 C~8Djh 2017 02 01.51720 09 28 20.55 +01 34 33.4 23.6i 16EC366 T09 C~8Djh 2017 02 01.52816 09 28 20.48 +01 34 33.2 23.8i 16EC366 T09 C~8Djh 2017 02 01.53085 09 28 20.47 +01 34 33.4 23.5i 16EC366 T09 C~8Djh 2017 02 21.286280 09 26 41.06 +01 39 01.3 16EC366 T09 C~8Djh 2024 12 31.411840 10 07 17.664 -10 57 23.20 23.6G 16EC366 G37 C~8cR9 2024 12 31.464170 10 07 17.492 -10 57 24.47 16EC366 G37 C~8cR9 2024 12 31.516510 10 07 17.332 -10 57 25.61 16EC366 G37 C~8cR9
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 0.15 0.00 -0.06
2 0.0002 0.00 -0.01 0.00 0.03
3 0.9528 0.00 0.12 0.00 0.19
4 0.9528 0.00 0.07 0.00 -0.05
5 0.9529 0.00 -0.04 0.00 0.08
6 9.9359 0.00 -0.22 0.00 0.07
7 10.0179 0.00 -0.27 0.00 0.13
8 10.0180 0.00 -0.02 0.00 0.05
9 10.0181 0.00 -0.04 0.00 0.04
10 10.0181 0.00 0.08 0.00 0.07
11 10.0284 0.00 -0.16 0.00 -0.18
12 10.0285 0.00 -0.04 0.00 -0.13
13 10.0285 0.00 -0.28 0.00 -0.16
14 10.0860 0.00 -0.08 0.00 0.09
15 10.0861 0.00 0.10 0.00 -0.09
16 10.0861 0.00 -0.01 0.00 -0.14
17 10.0862 0.00 -0.12 0.00 0.12
18 10.0862 0.00 0.06 0.00 -0.12
19 10.0862 0.00 0.02 0.00 0.03
20 10.0862 0.00 -0.06 0.00 0.14
21 10.0943 0.00 0.04 0.00 0.03
22 10.0943 0.00 0.09 0.00 0.11
23 10.0945 0.00 -0.12 0.00 -0.07
24 10.0945 0.00 0.00 0.00 -0.03
25 10.9897 0.00 0.07 0.00 0.01
26 11.0009 0.00 0.15 0.00 -0.22
27 11.0009 0.00 0.06 0.00 0.15
28 11.0010 0.00 0.08 0.00 0.08
29 11.0010 0.00 -0.13 0.00 -0.23
30 11.0010 0.00 -0.08 0.00 -0.06
31 11.0551 0.00 0.25 0.00 0.05
32 18.9131 0.00 0.13 0.00 0.06
33 18.9132 0.00 0.01 0.00 0.02
34 18.9134 0.00 0.08 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.
16EC366 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 158.214 158.210 158.218 ecceobj 0.755 0.755 0.755 incobj 37.387 37.387 37.387 qmin 36.476 36.389 36.457 qmax 293.602 294.221 293.992 amean 158.773 158.763 158.804 amin 154.828 154.906 154.586 amax 165.741 166.137 165.995 emean 0.759 0.759 0.759 emin 0.747 0.747 0.747 emax 0.771 0.772 0.772 imean 38.448 38.443 38.448 imin 37.870 37.873 37.868 imax 39.303 39.295 39.285 excite_mean 0.981 0.981 0.981 fracstop 1.000 1.000 1.000 cjmean 2.530 2.530 2.530 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 242.7 242.8 242.7 kozaiamp 18.5 18.6 18.4