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: 16ED367 # Created Tue Apr 1 01:10:44 2025 # Orbit generated from Bernstein formalism # Fitting 18 observations of 18 # Arc: 92.81d # First observation: 2016/03/04 # Last observation: 2016/06/05 Preliminary a, adot, b, bdot, g, gdot: -0.000001 0.036943 0.000007 -0.001132 0.028121 0.000000 # Chi-squared of fit: 5.89 DOF: 30 RMS: 0.10 # Min/Max residuals: -0.23 0.22 # Exact a, adot, b, bdot, g, gdot: 1.768136E-05 2.896099E-02 -3.695032E-07 -8.459239E-04 2.686656E-02 4.801421E-04 # Covariance matrix: 2.5079E-13 1.1821E-11 1.0861E-14 -4.5666E-13 2.1607E-12 -1.0563E-10 1.1821E-11 2.3840E-08 2.0907E-11 -8.5676E-10 3.1236E-09 -3.7168E-07 1.0861E-14 2.0907E-11 2.0972E-13 -1.6111E-12 2.7376E-12 -3.2650E-10 -4.5666E-13 -8.5676E-10 -1.6111E-12 3.7619E-11 -1.1230E-10 1.3360E-08 2.1607E-12 3.1236E-09 2.7376E-12 -1.1230E-10 4.1411E-10 -4.7841E-08 -1.0563E-10 -3.7168E-07 -3.2650E-10 1.3360E-08 -4.7841E-08 5.9575E-06 # lat0 lon0 xBary yBary zBary JD0 -3.111244 176.057991 0.207679 -0.052304 -0.965189 2457451.971739 # Heliocentric elements and errors Epoch: 2457450.5000 = 2016/03/03 Mean Anomaly: 4.14762 +/- 31.713 Argument of Peri: 235.48908 +/- 41.720 Long of Asc Node: 294.85411 +/- 0.093 Inclination: 3.46938 +/- 0.003 Eccentricity: 0.13116218 +/- 0.0015 Semi-Major Axis: 43.93265808 +/- 0.2924 Time of Perihelion: 2456225.1060 +/- 9369.4 Perihelion: 38.17035496 +/- 0.2621 Aphelion: 49.69496120 +/- 0.3370 Period (y) 291.1987 +/- 2.91 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -38.03205307 +/- 0.0281 Ecliptic Y 2.82618970 +/- 0.0019 Ecliptic Z -2.02017044 +/- 0.0015 Ecliptic XDOT -0.00024713 +/- 0.0002 Ecliptic YDOT -0.00294825 +/- 0.0000 Ecliptic ZDOT -0.00008872 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.19038489 +/- 0.0280 Geocenter to KBO 37.22098996 +/- 0.0282 # Hcoef: 8.82
The following table shows the complete astrometric record for 16ED367. 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 (16ED367) followed by the observatory code and reference code for the source of the astrometry.
2016 03 04.47095 11 40 35.39 -01 17 19.4 24.4i 16ED367 T09 C~8AhO 2016 03 04.47636 11 40 35.38 -01 17 19.2 24.3i 16ED367 T09 C~8AhO 2016 03 04.47910 11 40 35.36 -01 17 19.2 24.6i 16ED367 T09 C~8AhO 2016 03 04.48179 11 40 35.34 -01 17 19.2 23.9i 16ED367 T09 C~8AhO 2016 03 04.48449 11 40 35.34 -01 17 18.9 23.9i 16ED367 T09 C~8AhO 2016 03 04.52447 11 40 35.14 -01 17 17.9 24.3i 16ED367 T09 C~8AhO 2016 04 04.28576 11 38 07.98 -01 01 31.8 25.6g 16ED367 T09 C~8AhO 2016 04 04.29925 11 38 07.93 -01 01 31.3 25.4g 16ED367 T09 C~8AhO 2016 04 04.31200 11 38 07.85 -01 01 31.0 25.5g 16ED367 T09 C~8AhO 2016 04 04.32469 11 38 07.78 -01 01 30.6 26.0g 16ED367 T09 C~8AhO 2016 06 01.25214 11 35 33.03 -00 41 35.7 24.6z 16ED367 T09 C~8AhO 2016 06 01.28199 11 35 33.01 -00 41 35.6 24.4z 16ED367 T09 C~8AhO 2016 06 01.29557 11 35 33.01 -00 41 35.4 24.1z 16ED367 T09 C~8AhO 2016 06 01.30097 11 35 33.02 -00 41 35.6 24.3z 16ED367 T09 C~8AhO 2016 06 01.31593 11 35 33.00 -00 41 35.4 23.8z 16ED367 T09 C~8AhO 2016 06 05.25523 11 35 32.61 -00 41 14.2 24.5r 16ED367 T09 C~8AhO 2016 06 05.26877 11 35 32.61 -00 41 14.4 24.7r 16ED367 T09 C~8AhO 2016 06 05.28376 11 35 32.62 -00 41 14.1 24.8r 16ED367 T09 C~8AhO
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 -0.13 0.00 -0.03
2 0.0000 -0.22 0.08 0.12 0.11
3 0.0000 -0.49 0.02 0.00 -0.00
4 0.0000 -0.77 -0.05 -0.11 -0.12
5 0.0000 -0.89 0.05 0.16 0.16
6 0.0001 -4.04 0.04 -0.11 -0.02
7 0.0844 -2405.32 0.07 -8.03 -0.04
8 0.0844 -2406.21 0.20 -7.86 0.12
9 0.0844 -2407.43 -0.06 -8.07 -0.09
10 0.0845 -2408.55 -0.23 -8.12 -0.15
11 0.2431 -5014.09 0.02 166.58 0.09
12 0.2432 -5014.41 -0.07 166.56 -0.05
13 0.2432 -5014.49 -0.04 166.74 0.09
14 0.2432 -5014.27 0.22 166.61 -0.06
15 0.2432 -5014.63 -0.02 166.68 -0.05
16 0.2540 -5028.43 -0.11 183.82 0.07
17 0.2541 -5028.35 -0.01 183.63 -0.16
18 0.2541 -5028.33 0.03 183.97 0.12
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.
16ED367 quality flag:2 Type: SCATNEAR SCATNEAR CLASSICAL axisobj 43.492 46.390 43.299 ecceobj 0.122 0.262 0.118 incobj 3.469 3.463 3.469 qmin 36.694 33.863 37.127 qmax 51.292 60.508 50.052 amean 43.684 46.090 43.447 amin 43.269 45.211 43.089 amax 44.257 47.386 43.847 emean 0.114 0.234 0.120 emin 0.076 0.195 0.100 emax 0.160 0.277 0.142 imean 5.722 6.487 5.341 imin 4.664 4.648 3.866 imax 6.864 7.987 6.339 excite_mean 0.152 0.261 0.153 fracstop 1.000 1.000 1.000 cjmean 3.069 3.042 3.067 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 179.2 179.2 183.7 kozaiamp 180.0 180.0 179.9