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: 19AT142 # Created Sat Feb 22 02:11:11 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 19 observations of 19 # Arc: 20.70y # First observation: 2004/04/21 # Last observation: 2024/12/31 # Chi-squared of fit: 5.86 DOF: 32 RMS: 0.10 # Min/Max residuals: -0.18 0.21 # Exact a, adot, b, bdot, g, gdot: 1.523353E-05 2.598727E-02 -4.432208E-06 -8.505054E-03 2.714289E-02 -5.950580E-03 # Covariance matrix: 1.3739E-12 -1.3094E-13 -1.8492E-13 2.7577E-14 -9.4467E-14 -9.3306E-14 -1.3094E-13 1.7618E-14 2.9687E-14 -4.5579E-15 -7.5058E-15 1.4202E-14 -1.8492E-13 2.9687E-14 7.9878E-13 -5.4917E-14 -3.8050E-15 2.9723E-14 2.7577E-14 -4.5579E-15 -5.4917E-14 4.4434E-15 1.4048E-15 -4.5025E-15 -9.4467E-14 -7.5058E-15 -3.8050E-15 1.4048E-15 1.4325E-13 3.0580E-15 -9.3306E-14 1.4202E-14 2.9723E-14 -4.5025E-15 3.0580E-15 1.4582E-14 # lat0 lon0 xBary yBary zBary JD0 -3.311787 118.537325 -1.001452 0.003218 0.054479 2453116.773437 # Heliocentric elements and errors Epoch: 2453116.5000 = 2004/04/21 Mean Anomaly: 279.45087 +/- 0.021 Argument of Peri: 292.84571 +/- 0.013 Long of Asc Node: 289.95076 +/- 0.000 Inclination: 18.19181 +/- 0.000 Eccentricity: 0.18838709 +/- 0.0000 Semi-Major Axis: 36.64366474 +/- 0.0021 Time of Perihelion: 2471244.7198 +/- 7.2 Perihelion: 29.74047138 +/- 0.0017 Aphelion: 43.54685809 +/- 0.0025 Period (y) 221.8230 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -18.42923462 +/- 0.0003 Ecliptic Y 31.78737232 +/- 0.0004 Ecliptic Z -2.12849590 +/- 0.0000 Ecliptic XDOT -0.00199593 +/- 0.0000 Ecliptic YDOT -0.00182915 +/- 0.0000 Ecliptic ZDOT -0.00082165 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 36.80506133 +/- 0.0004 Geocenter to KBO 36.84223406 +/- 0.0005 # Hcoef: 8.27
The following table shows the complete astrometric record for 19AT142. 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 (19AT142) followed by the observatory code and reference code for the source of the astrometry.
2004 04 21.272694 07 59 48.67 +17 12 33.6 19AT142 T09 C~8eYm 2015 12 07.532144 09 19 38.77 +05 58 30.1 19AT142 T14 C~8eYm 2015 12 07.611257 09 19 38.59 +05 58 29.4 19AT142 T14 C~8eYm 2015 12 07.651264 09 19 38.50 +05 58 28.8 19AT142 T14 C~8eYm 2018 11 15.55462 09 38 21.06 +03 01 26.8 23.4z 19AT142 T09 C~870S 2018 11 15.57918 09 38 21.10 +03 01 26.0 23.2z 19AT142 T09 C~870S 2018 11 15.59104 09 38 21.10 +03 01 25.5 23.6z 19AT142 T09 C~870S 2018 11 15.63220 09 38 21.12 +03 01 24.3 23.1z 19AT142 T09 C~870S 2019 01 06.47354 09 36 37.10 +02 50 08.2 24.5g 19AT142 T09 C~870S 2019 01 06.56358 09 36 36.68 +02 50 08.8 24.1g 19AT142 T09 C~870S 2019 01 06.59760 09 36 36.53 +02 50 08.8 23.9g 19AT142 T09 C~870S 2019 01 06.61913 09 36 36.43 +02 50 09.0 24.3g 19AT142 T09 C~870S 2019 03 08.29390 09 31 02.77 +03 10 25.9 23.7r 19AT142 T09 C~870S 2019 03 08.31497 09 31 02.64 +03 10 26.5 23.2r 19AT142 T09 C~870S 2019 03 08.33611 09 31 02.54 +03 10 27.0 23.5r 19AT142 T09 C~870S 2019 03 08.34464 09 31 02.50 +03 10 27.5 23.5r 19AT142 T09 C~870S 2024 12 31.421810 10 16 06.210 -03 44 52.31 23.5G 19AT142 G37 C~8eYm 2024 12 31.474360 10 16 06.032 -03 44 52.75 19AT142 G37 C~8eYm 2024 12 31.526450 10 16 05.854 -03 44 53.37 19AT142 G37 C~8eYm
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 -0.10
2 11.6284 0.00 0.00 0.00 0.06
3 11.6286 0.00 -0.03 0.00 0.21
4 11.6287 0.00 -0.03 0.00 0.04
5 14.5689 0.00 -0.10 0.00 0.04
6 14.5689 0.00 0.21 0.00 -0.03
7 14.5690 0.00 0.07 0.00 -0.18
8 14.5691 0.00 -0.09 0.00 -0.16
9 14.7110 0.00 0.03 0.00 -0.10
10 14.7113 0.00 -0.04 0.00 0.08
11 14.7114 0.00 0.07 0.00 -0.07
12 14.7114 0.00 0.06 0.00 0.03
13 14.8775 0.00 0.13 0.00 0.07
14 14.8776 0.00 -0.17 0.00 0.05
15 14.8777 0.00 -0.01 0.00 -0.06
16 14.8777 0.00 0.06 0.00 0.19
17 20.6958 0.00 0.06 0.00 -0.02
18 20.6960 0.00 -0.03 0.00 0.04
19 20.6961 0.00 -0.14 0.00 -0.10
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.
19AT142 quality flag:3 Type: 4:3E 4:3E 4:3E Type: 8:6II 8:6II 8:6II axisobj 36.467 36.467 36.467 ecceobj 0.184 0.184 0.184 incobj 18.211 18.211 18.211 qmin 27.950 28.011 27.991 qmax 45.389 45.399 45.338 amean 36.475 36.475 36.475 amin 36.110 36.125 36.123 amax 36.878 36.891 36.888 emean 0.197 0.197 0.197 emin 0.161 0.161 0.161 emax 0.233 0.231 0.231 imean 19.648 19.651 19.647 imin 18.321 18.350 18.364 imax 20.931 20.929 20.919 excite_mean 0.390 0.390 0.390 fracstop 1.000 1.000 1.000 cjmean 2.857 2.857 2.857 libcent 0 178.6 178.6 178.6 libamp 0 63.7 63.8 63.7 libcent 1 178.6 181.1 178.2 libamp 1 153.6 156.6 153.9 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 269.8 269.8 269.8 kozaiamp 26.0 26.0 26.0