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 Sun Nov 24 02:10:35 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 27 observations of 27 # Arc: 11.06y # First observation: 2006/02/01 # Last observation: 2017/02/21 # Chi-squared of fit: 10.94 DOF: 48 RMS: 0.11 # Min/Max residuals: -0.25 0.23 # Exact a, adot, b, bdot, g, gdot: 1.463827E-05 2.196495E-02 -1.120558E-05 -1.678989E-02 2.335769E-02 -9.192841E-03 # Covariance matrix: 4.4926E-13 -1.6924E-13 -6.1245E-14 9.8647E-14 -2.9864E-13 -4.6788E-13 -1.6924E-13 1.6115E-13 7.1487E-14 -1.1469E-13 2.7794E-13 5.4455E-13 -6.1245E-14 7.1487E-14 3.5434E-13 -8.3586E-14 1.1511E-13 2.4869E-13 9.8647E-14 -1.1469E-13 -8.3586E-14 8.7410E-14 -1.8785E-13 -3.9848E-13 -2.9864E-13 2.7794E-13 1.1511E-13 -1.8785E-13 9.4140E-13 8.8784E-13 -4.6788E-13 5.4455E-13 2.4869E-13 -3.9848E-13 8.8784E-13 1.8926E-12 # 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: 355.87740 +/- 0.005 Argument of Peri: 224.98304 +/- 0.005 Long of Asc Node: 306.98529 +/- 0.000 Inclination: 37.36967 +/- 0.000 Eccentricity: 0.76090322 +/- 0.0002 Semi-Major Axis: 161.90561049 +/- 0.1320 Time of Perihelion: 2462385.5870 +/- 909.5 Perihelion: 38.71111088 +/- 0.0437 Aphelion: 285.10011011 +/- 0.2343 Period (y) 2060.1605 +/- 2.52 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -27.29322885 +/- 0.0011 Ecliptic Y 34.23862431 +/- 0.0014 Ecliptic Z -0.91895160 +/- 0.0000 Ecliptic XDOT -0.00131619 +/- 0.0000 Ecliptic YDOT -0.00248444 +/- 0.0000 Ecliptic ZDOT -0.00194445 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 43.79579380 +/- 0.0013 Geocenter to KBO 42.81276662 +/- 0.0018 # Hcoef: 7.92
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 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
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 0.04 0.00 -0.04
2 0.0002 0.00 -0.12 0.00 0.04
3 0.9528 0.00 0.12 0.00 0.13
4 0.9528 0.00 0.07 0.00 -0.11
5 0.9529 0.00 -0.04 0.00 0.02
6 9.9359 0.00 -0.13 0.00 0.05
7 10.0284 0.00 -0.13 0.00 -0.18
8 10.0285 0.00 -0.01 0.00 -0.13
9 10.0285 0.00 -0.25 0.00 -0.17
10 10.0860 0.00 -0.07 0.00 0.10
11 10.0861 0.00 0.10 0.00 -0.08
12 10.0861 0.00 -0.01 0.00 -0.13
13 10.0862 0.00 -0.12 0.00 0.13
14 10.0862 0.00 0.06 0.00 -0.11
15 10.0862 0.00 0.02 0.00 0.04
16 10.0862 0.00 -0.06 0.00 0.15
17 10.0943 0.00 0.04 0.00 0.04
18 10.0943 0.00 0.09 0.00 0.12
19 10.0945 0.00 -0.12 0.00 -0.06
20 10.0945 0.00 -0.00 0.00 -0.01
21 10.9897 0.00 0.09 0.00 0.07
22 11.0009 0.00 0.16 0.00 -0.15
23 11.0009 0.00 0.07 0.00 0.22
24 11.0010 0.00 0.08 0.00 0.15
25 11.0010 0.00 -0.13 0.00 -0.16
26 11.0010 0.00 -0.07 0.00 0.01
27 11.0551 0.00 0.23 0.00 0.13
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.