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: 19WZ35 # Created Tue Apr 1 01:11:17 2025 # Orbit generated from Bernstein formalism # Fitting 15 observations of 15 # Arc: 33.95d # First observation: 2019/10/31 # Last observation: 2019/12/04 Preliminary a, adot, b, bdot, g, gdot: -0.000001 0.019376 0.000002 0.008771 0.020055 0.000000 # WARNING Fitting with energy constraint # Chi-squared of fit: 4.69 DOF: 25 RMS: 0.10 # Min/Max residuals: -0.14 0.24 # Exact a, adot, b, bdot, g, gdot: 1.301169E-05 1.624672E-02 7.896944E-06 9.186724E-03 1.959114E-02 6.025219E-03 # Covariance matrix: 4.6938E-13 1.1401E-10 1.7509E-14 -1.4497E-11 1.9273E-11 -7.3963E-10 1.1401E-10 1.2580E-07 2.0580E-11 -1.5857E-08 1.9868E-08 -1.2227E-06 1.7509E-14 2.0580E-11 3.5258E-13 -6.7989E-12 3.1360E-12 -2.7874E-10 -1.4497E-11 -1.5857E-08 -6.7989E-12 2.0847E-09 -2.4802E-09 1.7147E-07 1.9273E-11 1.9868E-08 3.1360E-12 -2.4802E-09 3.1780E-09 -1.6722E-07 -7.3963E-10 -1.2227E-06 -2.7874E-10 1.7147E-07 -1.6722E-07 2.9485E-05 # lat0 lon0 xBary yBary zBary JD0 -17.008208 32.767657 -0.089917 -0.289810 -0.947518 2458787.996601 # Heliocentric elements and errors Epoch: 2458780.5000 = 2019/10/24 Mean Anomaly: 25.82401 +/- 12.206 Argument of Peri: 264.48268 +/- 21.865 Long of Asc Node: 59.76034 +/- 0.578 Inclination: 33.53202 +/- 0.526 Eccentricity: 0.43700831 +/- 0.3015 Semi-Major Axis: 76.48874898 +/- 23.7918 Time of Perihelion: 2441253.1638 +/- 1326.9 Perihelion: 43.06253005 +/- 26.6699 Aphelion: 109.91496791 +/- 41.2403 Period (y) 668.9668 +/- 312.12 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 41.83132937 +/- 0.1181 Ecliptic Y 27.02311227 +/- 0.0760 Ecliptic Z -14.93030611 +/- 0.0430 Ecliptic XDOT -0.00022754 +/- 0.0006 Ecliptic YDOT 0.00254954 +/- 0.0004 Ecliptic ZDOT 0.00098116 +/- 0.0002 # Distances at JD0 (AU) Heliocenter to KBO 51.99060255 +/- 0.1037 Geocenter to KBO 51.04347303 +/- 0.1469 # Hcoef: 7.77
The following table shows the complete astrometric record for 19WZ35. 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 (19WZ35) followed by the observatory code and reference code for the source of the astrometry.
2019 10 31.49580 02 25 18.00 -03 34 59.4 24.0z 19WZ35 T09 C~85Km 2019 10 31.51788 02 25 17.90 -03 34 59.6 24.3z 19WZ35 T09 C~85Km 2019 10 31.53991 02 25 17.82 -03 34 59.9 24.5z 19WZ35 T09 C~85Km 2019 10 31.55809 02 25 17.75 -03 35 00.1 24.7z 19WZ35 T09 C~85Km 2019 11 27.25481 02 23 35.80 -03 38 29.3 24.5z 19WZ35 T09 C~85Km 2019 11 27.32148 02 23 35.58 -03 38 29.1 25.5i 19WZ35 T09 C~85Km 2019 11 27.34361 02 23 35.48 -03 38 29.4 25.2i 19WZ35 T09 C~85Km 2019 11 27.36574 02 23 35.40 -03 38 29.3 25.9i 19WZ35 T09 C~85Km 2019 11 27.45540 02 23 35.09 -03 38 29.4 25.1r 19WZ35 T09 C~85Km 2019 12 04.30738 02 23 12.05 -03 38 27.5 24.2z 19WZ35 T09 C~85Km 2019 12 04.32949 02 23 11.96 -03 38 27.6 24.3z 19WZ35 T09 C~85Km 2019 12 04.35162 02 23 11.89 -03 38 27.6 24.4z 19WZ35 T09 C~85Km 2019 12 04.35867 02 23 11.87 -03 38 27.3 24.7z 19WZ35 T09 C~85Km 2019 12 04.39987 02 23 11.73 -03 38 27.3 24.8i 19WZ35 T09 C~85Km 2019 12 04.44386 02 23 11.59 -03 38 27.3 24.9i 19WZ35 T09 C~85Km
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 0.02 0.00 -0.10
2 0.0001 -1.48 -0.10 0.31 0.05
3 0.0001 -2.71 0.02 0.43 0.00
4 0.0002 -3.76 0.08 0.59 0.03
5 0.0733 -1511.92 -0.11 314.63 -0.10
6 0.0734 -1514.96 0.24 315.92 0.10
7 0.0735 -1516.47 -0.14 316.14 -0.04
8 0.0736 -1517.57 -0.11 316.64 0.09
9 0.0738 -1521.97 0.03 318.10 0.07
10 0.0926 -1846.38 0.20 435.31 -0.02
11 0.0926 -1847.68 -0.10 435.67 -0.07
12 0.0927 -1848.67 -0.07 436.02 -0.13
13 0.0927 -1848.85 0.07 436.40 0.12
14 0.0928 -1850.83 -0.03 437.10 0.06
15 0.0929 -1852.80 -0.00 437.80 -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.
19WZ35 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0