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: 16PU219 # Created Sun Dec 22 02:10:44 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 11 observations of 11 # Arc: 10.08y # First observation: 2013/11/08 # Last observation: 2023/12/07 # Chi-squared of fit: 5.23 DOF: 16 RMS: 0.12 # Min/Max residuals: -0.19 0.30 # Exact a, adot, b, bdot, g, gdot: 1.405691E-05 2.309969E-02 8.308344E-06 1.505239E-02 2.695851E-02 -1.658786E-03 # Covariance matrix: 1.0535E-12 -3.8214E-13 4.3335E-13 -2.1950E-13 -1.4693E-13 -1.1627E-12 -3.8214E-13 1.9910E-13 -2.6123E-13 1.3316E-13 -2.8817E-14 7.0500E-13 4.3335E-13 -2.6123E-13 7.7556E-13 -2.4366E-13 9.0951E-14 -9.9562E-13 -2.1950E-13 1.3316E-13 -2.4366E-13 1.0717E-13 -4.9828E-14 5.0859E-13 -1.4693E-13 -2.8817E-14 9.0951E-14 -4.9828E-14 4.9567E-13 -2.6244E-13 -1.1627E-12 7.0500E-13 -9.9562E-13 5.0859E-13 -2.6244E-13 2.6922E-12 # lat0 lon0 xBary yBary zBary JD0 -12.281342 21.121943 -0.410991 -0.191336 -0.879593 2456604.732558 # Heliocentric elements and errors Epoch: 2456604.5000 = 2013/11/08 Mean Anomaly: 284.14668 +/- 0.090 Argument of Peri: 60.43815 +/- 0.106 Long of Asc Node: 39.38098 +/- 0.000 Inclination: 35.05538 +/- 0.000 Eccentricity: 0.05139448 +/- 0.0001 Semi-Major Axis: 38.36154837 +/- 0.0043 Time of Perihelion: 2474890.3304 +/- 24.7 Perihelion: 36.38997657 +/- 0.0046 Aphelion: 40.33312016 +/- 0.0050 Period (y) 237.6033 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 34.50082333 +/- 0.0009 Ecliptic Y 13.77173307 +/- 0.0003 Ecliptic Z -7.89010945 +/- 0.0002 Ecliptic XDOT -0.00070177 +/- 0.0000 Ecliptic YDOT 0.00224449 +/- 0.0000 Ecliptic ZDOT 0.00152968 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 37.97661862 +/- 0.0008 Geocenter to KBO 37.09410535 +/- 0.0010 # Hcoef: 8.17
The following table shows the complete astrometric record for 16PU219. 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 (16PU219) followed by the observatory code and reference code for the source of the astrometry.
2013 11 08.23178 01 36 23.307 -03 09 30.82 24.6r 16PU219 W84 C~52ZG 2016 08 14.39759 01 53 27.606 +01 14 19.37 23.2g 16PU219 W84 C~52ZG 2016 10 23.19963 01 48 42.705 +00 48 42.53 23.4r 16PU219 W84 C~52ZG 2016 10 28.17428 01 48 15.738 +00 47 05.09 24.0i 16PU219 W84 C~52ZG 2016 11 28.12724 01 45 43.422 +00 41 07.23 24.2r 16PU219 W84 C~52ZG 2016 11 30.13998 01 45 35.205 +00 41 01.86 23.7i 16PU219 W84 C~52ZG 2017 09 14.30679 01 55 37.056 +02 22 07.09 24.2r 16PU219 W84 C~52ZG 2018 09 11.34733 01 59 29.587 +03 41 28.03 24.1r 16PU219 W84 C~52ZG 2023 12 07.106240 02 11 06.314 +09 49 57.95 23.6G 16PU219 G37 C~7dKs 2023 12 07.156860 02 11 06.115 +09 49 57.77 16PU219 G37 C~7dKs 2023 12 07.208800 02 11 05.894 +09 49 57.07 16PU219 G37 C~7dKs
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 -0.14 0.00 0.06
2 2.7657 0.00 -0.08 0.00 0.05
3 2.9568 0.00 0.11 0.00 0.30
4 2.9704 0.00 0.18 0.00 -0.19
5 3.0552 0.00 -0.06 0.00 -0.06
6 3.0607 0.00 0.07 0.00 -0.06
7 3.8496 0.00 -0.00 0.00 -0.06
8 4.8408 0.00 0.03 0.00 -0.06
9 10.0777 0.00 -0.19 0.00 -0.06
10 10.0778 0.00 0.05 0.00 0.18
11 10.0780 0.00 0.05 0.00 -0.08
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.
16PU219 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 38.536 38.536 38.536 ecceobj 0.050 0.050 0.050 incobj 34.999 34.999 34.999 qmin 36.034 35.978 36.033 qmax 40.821 40.835 40.821 amean 38.332 38.332 38.334 amin 38.052 38.052 38.053 amax 38.622 38.624 38.622 emean 0.045 0.046 0.045 emin 0.033 0.035 0.033 emax 0.057 0.057 0.057 imean 34.287 34.283 34.287 imin 33.937 33.937 33.937 imax 34.645 34.644 34.645 excite_mean 0.565 0.565 0.565 fracstop 1.000 1.000 1.000 cjmean 2.648 2.649 2.648 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 178.2 181.9 178.5 kozaiamp 180.0 180.0 180.0