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: 19AN142 # Created Tue Apr 1 01:11:10 2025 # Orbit generated from Bernstein formalism # Fitting 10 observations of 10 # Arc: 83.97d # First observation: 2019/01/11 # Last observation: 2019/04/05 Preliminary a, adot, b, bdot, g, gdot: -0.000007 0.026404 -0.000005 -0.006907 0.024729 0.000000 # Chi-squared of fit: 5.96 DOF: 14 RMS: 0.14 # Min/Max residuals: -0.27 0.21 # Exact a, adot, b, bdot, g, gdot: 1.855126E-05 3.013803E-02 -4.742968E-06 -6.707663E-03 2.521079E-02 -5.564542E-03 # Covariance matrix: 4.9589E-13 1.3682E-11 1.5565E-14 3.1663E-13 3.4051E-12 1.3720E-10 1.3682E-11 3.1946E-08 2.7049E-11 1.0052E-09 5.8638E-09 5.5224E-08 1.5565E-14 2.7049E-11 4.8947E-13 -1.4025E-12 5.0138E-12 5.7344E-11 3.1663E-13 1.0052E-09 -1.4025E-12 4.8782E-11 1.8049E-10 8.0138E-10 3.4051E-12 5.8638E-09 5.0138E-12 1.8049E-10 1.0876E-09 1.2588E-08 1.3720E-10 5.5224E-08 5.7344E-11 8.0138E-10 1.2588E-08 6.5252E-07 # lat0 lon0 xBary yBary zBary JD0 -7.647493 165.002728 0.805345 -0.076704 -0.571928 2458495.025361 # Heliocentric elements and errors Epoch: 2458490.5000 = 2019/01/07 Mean Anomaly: 353.66698 +/- 0.719 Argument of Peri: 241.72840 +/- 3.437 Long of Asc Node: 313.75264 +/- 0.171 Inclination: 14.77815 +/- 0.072 Eccentricity: 0.60225354 +/- 0.0183 Semi-Major Axis: 95.81962707 +/- 3.4141 Time of Perihelion: 2464517.3279 +/- 603.7 Perihelion: 38.11191784 +/- 2.2151 Aphelion: 153.52733630 +/- 5.7434 Period (y) 937.9721 +/- 50.13 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -38.32200504 +/- 0.0497 Ecliptic Y 11.09215257 +/- 0.0133 Ecliptic Z -5.27883240 +/- 0.0069 Ecliptic XDOT -0.00016687 +/- 0.0001 Ecliptic YDOT -0.00334342 +/- 0.0000 Ecliptic ZDOT -0.00064175 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 40.24273835 +/- 0.0475 Geocenter to KBO 39.66555460 +/- 0.0519 # Hcoef: 8.14
The following table shows the complete astrometric record for 19AN142. 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 (19AN142) followed by the observatory code and reference code for the source of the astrometry.
2019 01 11.52456 10 52 58.49 -01 09 01.7 23.7z 19AN142 T09 C~870S 2019 01 11.57085 10 52 58.36 -01 09 01.7 23.9z 19AN142 T09 C~870S 2019 01 11.65474 10 52 58.13 -01 09 01.7 23.8z 19AN142 T09 C~870S 2019 03 15.37605 10 48 41.57 -00 51 47.1 23.6y 19AN142 T09 C~870S 2019 03 15.37872 10 48 41.57 -00 51 47.1 23.9y 19AN142 T09 C~870S 2019 03 15.41944 10 48 41.35 -00 51 46.2 23.4y 19AN142 T09 C~870S 2019 04 05.38680 10 47 14.28 -00 42 39.8 24.1r 19AN142 T09 C~870S 2019 04 05.41988 10 47 14.15 -00 42 39.2 24.3r 19AN142 T09 C~870S 2019 04 05.45633 10 47 14.01 -00 42 38.1 24.6r 19AN142 T09 C~870S 2019 04 05.49907 10 47 13.83 -00 42 37.3 25.0r 19AN142 T09 C~870S
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 0.07 0.00 0.11
2 0.0001 -1.80 -0.01 -0.75 0.02
3 0.0004 -4.98 -0.07 -2.07 -0.13
4 0.1721 -3955.30 -0.00 -526.40 0.11
5 0.1721 -3955.30 0.19 -526.40 0.11
6 0.1722 -3958.70 -0.19 -526.84 -0.22
7 0.2296 -5375.06 0.09 -524.84 0.21
8 0.2297 -5377.09 0.11 -525.04 -0.04
9 0.2298 -5379.45 -0.01 -524.83 0.11
10 0.2299 -5382.25 -0.19 -525.13 -0.27
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.
19AN142 quality flag:1 Type: SCATNEAR SCATNEAR 5:1EEEE axisobj 94.515 103.744 87.182 ecceobj 0.596 0.639 0.558 incobj 14.766 14.654 14.951 qmin 37.019 36.275 37.523 qmax 157.061 177.658 142.210 amean 94.815 104.405 88.043 amin 92.894 102.373 86.378 amax 97.583 107.549 90.395 emean 0.596 0.639 0.562 emin 0.582 0.625 0.551 emax 0.610 0.652 0.574 imean 16.290 16.607 16.448 imin 15.602 15.814 16.065 imax 17.187 17.889 16.817 excite_mean 0.659 0.700 0.629 fracstop 1.000 1.000 1.000 cjmean 3.051 3.034 3.055 libcent 0 -180.0 -180.0 179.7 libamp 0 -180.0 -180.0 170.7 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 182.9 170.6 185.0 kozaiamp 179.9 180.0 180.0