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: 16UO273 # Created Fri Nov 22 02:10:47 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 15 observations of 15 # Arc: 8.16y # First observation: 2014/10/01 # Last observation: 2022/11/28 # Chi-squared of fit: 7.20 DOF: 24 RMS: 0.12 # Min/Max residuals: -0.20 0.25 # Exact a, adot, b, bdot, g, gdot: 1.553114E-05 2.452869E-02 3.813081E-06 5.331275E-03 2.455917E-02 4.162242E-03 # Covariance matrix: 6.5312E-13 -3.2639E-13 9.5986E-14 -7.2320E-14 1.3296E-13 -1.5211E-12 -3.2639E-13 2.2269E-13 -7.0028E-14 5.2281E-14 -2.0308E-14 1.1022E-12 9.5986E-14 -7.0028E-14 2.9103E-13 -6.7664E-14 2.3426E-14 -3.7966E-13 -7.2320E-14 5.2281E-14 -6.7664E-14 2.8319E-14 -2.1425E-14 2.8546E-13 1.3296E-13 -2.0308E-14 2.3426E-14 -2.1425E-14 6.3412E-13 -4.3046E-13 -1.5211E-12 1.1022E-12 -3.7966E-13 2.8546E-13 -4.3046E-13 6.0072E-12 # lat0 lon0 xBary yBary zBary JD0 -10.886480 28.727624 0.358567 -0.176844 -0.920407 2456931.846398 # Heliocentric elements and errors Epoch: 2456932.5000 = 2014/10/02 Mean Anomaly: 40.92835 +/- 0.018 Argument of Peri: 258.98891 +/- 0.022 Long of Asc Node: 68.97049 +/- 0.001 Inclination: 16.06296 +/- 0.000 Eccentricity: 0.20054236 +/- 0.0001 Semi-Major Axis: 47.84639070 +/- 0.0091 Time of Perihelion: 2443189.1087 +/- 7.2 Perihelion: 38.25116251 +/- 0.0101 Aphelion: 57.44161890 +/- 0.0130 Period (y) 330.9649 +/- 0.09 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 36.05510059 +/- 0.0011 Ecliptic Y 19.35666612 +/- 0.0006 Ecliptic Z -7.69004073 +/- 0.0003 Ecliptic XDOT -0.00082091 +/- 0.0000 Ecliptic YDOT 0.00266621 +/- 0.0000 Ecliptic ZDOT 0.00049611 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 41.63867191 +/- 0.0010 Geocenter to KBO 40.71790638 +/- 0.0013 # Hcoef: 7.35
The following table shows the complete astrometric record for 16UO273. 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 (16UO273) followed by the observatory code and reference code for the source of the astrometry.
2014 10 01.34562 02 02 10.993 +00 49 44.81 23.7r 16UO273 W84 C~55b1 2014 10 01.34698 02 02 10.982 +00 49 44.80 23.3i 16UO273 W84 C~55b1 2015 12 17.12233 02 01 43.106 +01 16 53.14 22.9i 16UO273 W84 C~55b1 2016 10 28.23296 02 09 43.971 +02 11 11.01 23.8r 16UO273 W84 C~55b1 2016 10 28.23436 02 09 43.970 +02 11 10.86 23.7i 16UO273 W84 C~55b1 2016 11 03.22984 02 09 15.907 +02 09 11.25 23.4r 16UO273 W84 C~55b1 2017 08 27.41367 02 18 14.718 +03 20 27.21 23.1i 16UO273 W84 C~55b1 2017 09 18.33522 02 17 18.505 +03 12 32.08 23.7r 16UO273 W84 C~55b1 2017 09 25.30996 02 16 53.809 +03 09 44.19 24.2r 16UO273 W84 C~55b1 2017 09 25.34372 02 16 53.704 +03 09 43.18 23.5i 16UO273 W84 C~55b1 2017 10 22.22461 02 14 58.522 +02 59 00.47 22.6z 16UO273 W84 C~55b1 2018 10 21.23239 02 19 47.623 +03 44 35.36 22.6z 16UO273 W84 C~55b1 2022 11 28.231350 02 35 33.486 +06 29 44.14 23.9G 16UO273 G37 C~67D6 2022 11 28.282300 02 35 33.278 +06 29 43.75 16UO273 G37 C~67D6 2022 11 28.331670 02 35 33.046 +06 29 43.03 16UO273 G37 C~67D6
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 0.08 0.00 -0.05
2 0.0000 0.00 -0.00 0.00 -0.03
3 1.2095 0.00 -0.17 0.00 0.25
4 2.0750 0.00 0.06 0.00 0.10
5 2.0750 0.00 0.15 0.00 -0.02
6 2.0914 0.00 -0.11 0.00 -0.10
7 2.9050 0.00 0.04 0.00 -0.05
8 2.9651 0.00 -0.10 0.00 -0.11
9 2.9842 0.00 -0.19 0.00 0.01
10 2.9843 0.00 0.17 0.00 -0.18
11 3.0578 0.00 0.14 0.00 0.22
12 4.0544 0.00 0.04 0.00 -0.02
13 8.1585 0.00 0.02 0.00 -0.06
14 8.1586 0.00 0.14 0.00 0.12
15 8.1588 0.00 -0.20 0.00 -0.05
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.
16UO273 quality flag:3 Type: 2:1E 2:1E 2:1E Type: 2:1EII 2:1EII 2:1EII axisobj 48.351 48.351 48.350 ecceobj 0.208 0.208 0.208 incobj 16.052 16.052 16.052 qmin 36.137 35.949 36.515 qmax 60.276 60.364 60.034 amean 47.796 47.796 47.797 amin 47.239 47.237 47.241 amax 48.469 48.480 48.443 emean 0.211 0.210 0.202 emin 0.158 0.151 0.159 emax 0.245 0.248 0.240 imean 14.507 14.496 14.905 imin 13.534 13.335 13.761 imax 16.028 16.241 16.064 excite_mean 0.328 0.328 0.328 fracstop 1.000 1.000 1.000 cjmean 3.014 3.014 3.014 libcent 0 101.7 103.1 100.2 libamp 0 66.0 67.9 64.7 libcent 1 229.4 235.1 225.7 libamp 1 102.9 105.3 88.9 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 242.1 242.7 241.2 kozaiamp 24.2 25.2 16.6