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: 19AJ142 # Created Sat May 10 01:11:11 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 12 observations of 15 # Arc: 83.97d # First observation: 2019/01/11 # Last observation: 2019/04/05 # Chi-squared of fit: 6.54 DOF: 18 RMS: 0.13 # Min/Max residuals: -0.25 0.35 # Exact a, adot, b, bdot, g, gdot: 1.892329E-05 3.491509E-02 -1.827298E-07 -9.548561E-04 2.990215E-02 -4.576818E-03 # Covariance matrix: 3.5049E-13 1.3589E-12 2.2683E-14 -4.9590E-14 5.9512E-13 6.9658E-12 1.3589E-12 2.4471E-09 2.3963E-11 -9.0030E-11 5.0087E-10 1.2749E-08 2.2683E-14 2.3963E-11 3.6052E-13 -9.0300E-13 4.9175E-12 1.2483E-10 -4.9590E-14 -9.0030E-11 -9.0300E-13 3.3271E-12 -1.8426E-11 -4.6904E-10 5.9512E-13 5.0087E-10 4.9175E-12 -1.8426E-11 1.0295E-10 2.6091E-09 6.9658E-12 1.2749E-08 1.2483E-10 -4.6904E-10 2.6091E-09 6.6419E-08 # lat0 lon0 xBary yBary zBary JD0 -5.914075 168.247863 0.836654 -0.054586 -0.527819 2458495.032111 # Heliocentric elements and errors Epoch: 2458494.5000 = 2019/01/11 Mean Anomaly: 330.65251 +/- 0.953 Argument of Peri: 301.62440 +/- 1.827 Long of Asc Node: 273.34521 +/- 0.011 Inclination: 6.06882 +/- 0.000 Eccentricity: 0.24858077 +/- 0.0042 Semi-Major Axis: 42.23521942 +/- 0.0163 Time of Perihelion: 2466667.4544 +/- 270.8 Perihelion: 31.73635624 +/- 0.1786 Aphelion: 52.73408260 +/- 0.1794 Period (y) 274.4861 +/- 0.16 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -32.91550896 +/- 0.0110 Ecliptic Y 7.69436370 +/- 0.0023 Ecliptic Z -3.44584145 +/- 0.0012 Ecliptic XDOT -0.00022631 +/- 0.0000 Ecliptic YDOT -0.00321845 +/- 0.0000 Ecliptic ZDOT -0.00004399 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 33.97814576 +/- 0.0107 Geocenter to KBO 33.44251384 +/- 0.0113 # Hcoef: 8.58
The following table shows the complete astrometric record for 19AJ142. 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 (19AJ142) followed by the observatory code and reference code for the source of the astrometry.
2019 01 11.53131 11 07 32.71 -00 47 56.9 23.7z 19AJ142 T09 C~870S 2019 01 11.54824 11 07 32.68 -00 47 56.9 23.5z 19AJ142 T09 C~870S 2019 01 11.57887 11 07 32.60 -00 47 56.6 23.7z 19AJ142 T09 C~870S 2019 01 11.61961 11 07 32.48 -00 47 56.3 23.7z 19AJ142 T09 C~870S 2019 03 15.35287 11 02 42.87 -00 23 18.3 23.4y 19AJ142 T09 C~870S 2019 03 15.38407 11 02 42.72 -00 23 17.3 23.0y 19AJ142 T09 C~870S 2019 03 15.39755 11 02 42.61 -00 23 17.1 23.2y 19AJ142 T09 C~870S 2019 03 15.42746 11 02 42.47 -00 23 15.8 23.0y 19AJ142 T09 C~870S 2019 03 15.51887 11 02 41.95 -00 23 12.6 23.5y 19AJ142 T09 C~870S 2019 04 05.39521 11 00 57.43 -00 11 13.9 24.4r 19AJ142 T09 C~870S 2019 04 05.47099 11 00 57.09 -00 11 11.4 24.6r 19AJ142 T09 C~870S 2019 04 05.50326 11 00 56.95 -00 11 10.4 24.3r 19AJ142 T09 C~870S 2025 04 23.15553 11 45 09.179 -05 09 26.46 24.1G 19AJ142 G37 2025 04 23.18908 11 45 09.084 -05 09 25.00 19AJ142 G37 2025 04 23.22264 11 45 08.949 -05 09 23.87 19AJ142 G37
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 -0.11 0.00 -0.02
2 0.0000 0.00 0.12 0.00 -0.12
3 0.0001 0.00 0.16 0.00 0.01
4 0.0002 0.00 0.02 0.00 0.07
5 0.1720 0.00 0.04 0.00 0.10
6 0.1721 0.00 0.35 0.00 0.02
7 0.1721 0.00 -0.20 0.00 -0.25
8 0.1722 0.00 0.16 0.00 0.02
9 0.1725 0.00 -0.15 0.00 0.06
10 0.2296 0.00 -0.09 0.00 0.03
11 0.2298 0.00 0.03 0.00 0.00
12 0.2299 0.00 0.15 0.00 -0.07
13 6.2796 0.00 ( 112.53) 0.00 ( -34.97)
14 6.2797 0.00 ( 113.25) 0.00 ( -34.66)
15 6.2798 0.00 ( 113.37) 0.00 ( -34.67)
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.
19AJ142 quality flag:3 Type: 5:3EE 5:3EE 5:3EE axisobj 42.054 42.054 42.054 ecceobj 0.242 0.242 0.242 incobj 6.056 6.056 6.056 qmin 30.806 30.845 30.803 qmax 54.629 54.550 54.559 amean 42.327 42.327 42.327 amin 41.764 41.786 41.814 amax 43.011 42.978 42.931 emean 0.256 0.251 0.228 emin 0.240 0.220 0.106 emax 0.274 0.272 0.272 imean 7.087 7.683 9.171 imin 6.276 6.903 6.373 imax 8.203 10.068 15.344 excite_mean 0.285 0.284 0.285 fracstop 1.000 1.000 1.000 cjmean 2.985 2.985 2.985 libcent 0 181.0 180.9 184.2 libamp 0 134.4 121.2 174.6 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 182.4 183.2 120.7 kozaiamp 180.0 180.0 179.9