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: 19AP142
# Created Sat May 10 01:11:11 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 25 observations of 25
# Arc: 12.29y
# First observation: 2006/11/21
# Last observation: 2019/03/08
# Chi-squared of fit: 9.53 DOF: 44 RMS: 0.11
# Min/Max residuals: -0.26 0.21
# Exact a, adot, b, bdot, g, gdot:
2.259079E-05 8.527352E-02 -7.368394E-06 -2.736130E-02 6.012261E-02 2.459136E-02
# Covariance matrix:
3.6367E-13 -3.3688E-14 -9.6268E-15 4.7040E-17 -2.2571E-14 -1.4241E-14
-3.3688E-14 4.9682E-15 2.6561E-15 -3.3480E-17 1.9704E-14 3.1371E-15
-9.6268E-15 2.6561E-15 3.4066E-13 -2.9266E-14 2.1605E-14 5.7095E-15
4.7040E-17 -3.3480E-17 -2.9266E-14 2.9681E-15 -3.6368E-16 -4.0982E-17
-2.2571E-14 1.9704E-14 2.1605E-14 -3.6368E-16 2.2033E-13 2.1987E-14
-1.4241E-14 3.1371E-15 5.7095E-15 -4.0982E-17 2.1987E-14 7.9408E-15
# lat0 lon0 xBary yBary zBary JD0
4.624022 101.237044 0.668367 0.059270 -0.731472 2454060.980110
# Heliocentric elements and errors
Epoch: 2454060.5000 = 2006/11/21
Mean Anomaly: 65.16370 +/- 0.001
Argument of Peri: 73.60046 +/- 0.000
Long of Asc Node: 292.86182 +/- 0.000
Inclination: 17.94927 +/- 0.000
Eccentricity: 0.23417711 +/- 0.0000
Semi-Major Axis: 18.23912221 +/- 0.0000
Time of Perihelion: 2448910.4960 +/- 0.1
Perihelion: 13.96793724 +/- 0.0001
Aphelion: 22.51030717 +/- 0.0001
Period (y) 77.8958 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -2.72102879 +/- 0.0000
Ecliptic Y 17.10675580 +/- 0.0000
Ecliptic Z 1.34075019 +/- 0.0000
Ecliptic XDOT -0.00404069 +/- 0.0000
Ecliptic YDOT 0.00043236 +/- 0.0000
Ecliptic ZDOT -0.00115170 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 17.37352847 +/- 0.0000
Geocenter to KBO 16.63260230 +/- 0.0000
# Hcoef: 9.79
The following table shows the complete astrometric record for 19AP142. 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 (19AP142) followed by the observatory code and reference code for the source of the astrometry.
2006 11 21.479356 06 50 37.73 +27 34 15.3 21.8r 19AP142 645 C~8r91 2006 11 21.480186 06 50 37.72 +27 34 15.3 21.7i 19AP142 645 C~8r91 2006 11 21.481844 06 50 37.72 +27 34 15.1 21.6z 19AP142 645 C~8r91 2006 11 21.482673 06 50 37.70 +27 34 15.3 22.6g 19AP142 645 C~8r91 2015 04 05.080751 08 44 25.277 +11 20 39.95 22.2i 19AP142 W84 C~8iiY 2015 04 12.009224 08 44 10.406 +11 22 35.47 23.1r 19AP142 W84 C~8iiY 2016 01 10.256672 09 08 51.125 +08 34 39.32 23.2g 19AP142 W84 C~8iiY 2016 01 10.257794 09 08 51.110 +08 34 39.25 22.7r 19AP142 W84 C~8iiY 2017 03 17.087909 09 11 26.930 +07 08 08.92 22.6z 19AP142 W84 C~8iiY 2018 02 18.239547 09 27 23.539 +04 48 34.42 22.9r 19AP142 W84 C~8eYm 2018 02 19.231934 09 27 14.290 +04 49 14.48 23.3g 19AP142 W84 C~8eYm 2018 11 15.56153 09 47 42.02 +02 51 37.2 23.2z 19AP142 T09 C~870S 2018 11 15.57003 09 47 42.05 +02 51 36.9 23.0z 19AP142 T09 C~870S 2018 11 15.61124 09 47 42.12 +02 51 34.8 23.0z 19AP142 T09 C~870S 2018 11 15.62300 09 47 42.14 +02 51 34.2 22.8z 19AP142 T09 C~870S 2019 01 06.56778 09 45 23.29 +02 31 00.7 23.6g 19AP142 T09 C~870S 2019 01 06.59117 09 45 23.12 +02 31 00.7 23.7g 19AP142 T09 C~870S 2019 01 06.60179 09 45 23.06 +02 31 00.7 23.7g 19AP142 T09 C~870S 2019 01 06.62123 09 45 22.91 +02 31 00.7 23.8g 19AP142 T09 C~870S 2019 01 06.62334 09 45 22.90 +02 31 00.7 23.7g 19AP142 T09 C~870S 2019 03 08.26245 09 36 35.50 +03 01 55.7 23.3r 19AP142 T09 C~870S 2019 03 08.29600 09 36 35.20 +03 01 57.2 23.3r 19AP142 T09 C~870S 2019 03 08.29809 09 36 35.20 +03 01 57.3 23.3r 19AP142 T09 C~870S 2019 03 08.31706 09 36 35.05 +03 01 58.0 23.0r 19AP142 T09 C~870S 2019 03 08.33820 09 36 34.86 +03 01 59.0 23.2r 19AP142 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 -0.03 0.00 0.04
2 0.0000 0.00 -0.08 0.00 0.03
3 0.0000 0.00 0.14 0.00 -0.18
4 0.0000 0.00 -0.05 0.00 0.02
5 8.3685 0.00 0.11 0.00 0.06
6 8.3875 0.00 0.02 0.00 0.11
7 9.1356 0.00 0.04 0.00 0.11
8 9.1356 0.00 -0.03 0.00 0.02
9 10.3179 0.00 0.03 0.00 -0.04
10 11.2437 0.00 -0.04 0.00 -0.03
11 11.2464 0.00 0.04 0.00 0.09
12 11.9838 0.00 -0.19 0.00 -0.06
13 11.9838 0.00 0.02 0.00 0.06
14 11.9839 0.00 -0.08 0.00 0.04
15 11.9840 0.00 -0.10 0.00 0.03
16 12.1262 0.00 0.07 0.00 0.01
17 12.1262 0.00 -0.01 0.00 -0.11
18 12.1263 0.00 0.21 0.00 -0.16
19 12.1263 0.00 0.01 0.00 -0.25
20 12.1263 0.00 0.09 0.00 -0.26
21 12.2924 0.00 0.01 0.00 0.18
22 12.2924 0.00 -0.26 0.00 0.14
23 12.2925 0.00 0.00 0.00 0.15
24 12.2925 0.00 0.15 0.00 -0.02
25 12.2926 0.00 -0.03 0.00 0.01
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.
19AP142 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 18.414 18.414 18.414 ecceobj 0.240 0.240 0.240 incobj 17.914 17.914 17.914 qmin 13.694 13.693 12.896 qmax 22.962 22.888 24.391 amean 18.268 18.272 18.388 amin 18.122 18.122 18.121 amax 18.484 18.513 18.773 emean 0.240 0.240 0.264 emin 0.234 0.231 0.231 emax 0.245 0.245 0.299 imean 19.421 19.437 18.912 imin 19.257 19.256 18.161 imax 19.605 19.688 19.535 excite_mean 0.410 0.410 0.418 fracstop 0.003 0.002 0.014 cjmean 3.075 3.075 3.067 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 90.9 88.3 184.5 kozaiamp 17.4 14.3 109.5