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 Tue Jan 21 02:11:17 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 12 observations of 15 # Arc: 112.79d # First observation: 2018/11/15 # Last observation: 2019/03/08 # Chi-squared of fit: 3.51 DOF: 18 RMS: 0.10 # Min/Max residuals: -0.17 0.19 # Exact a, adot, b, bdot, g, gdot: 1.764394E-05 3.144602E-02 -4.771354E-06 -8.197306E-03 2.944696E-02 -4.869427E-03 # Covariance matrix: 2.7545E-13 -1.2135E-12 -5.5351E-14 3.4861E-13 -8.3563E-14 -5.9158E-12 -1.2135E-12 3.7737E-11 2.4559E-12 -1.1083E-11 8.8568E-12 1.8927E-10 -5.5351E-14 2.4559E-12 2.8858E-13 -7.4384E-13 6.1503E-13 1.2334E-11 3.4861E-13 -1.1083E-11 -7.4384E-13 3.2712E-12 -2.6046E-12 -5.5606E-11 -8.3563E-14 8.8568E-12 6.1503E-13 -2.6046E-12 2.4187E-12 4.4545E-11 -5.9158E-12 1.8927E-10 1.2334E-11 -5.5606E-11 4.4545E-11 9.4964E-10 # lat0 lon0 xBary yBary zBary JD0 -10.472891 145.858791 0.993643 0.008676 0.046353 2458438.055421 # Heliocentric elements and errors Epoch: 2458438.5000 = 2018/11/16 Mean Anomaly: 301.53070 +/- 0.047 Argument of Peri: 294.80838 +/- 0.147 Long of Asc Node: 290.04205 +/- 0.000 Inclination: 18.25835 +/- 0.000 Eccentricity: 0.19103450 +/- 0.0009 Semi-Major Axis: 36.45661691 +/- 0.0049 Time of Perihelion: 2471496.8511 +/- 17.1 Perihelion: 29.49214543 +/- 0.0327 Aphelion: 43.42108839 +/- 0.0330 Period (y) 220.1267 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -27.04169231 +/- 0.0015 Ecliptic Y 19.52974652 +/- 0.0010 Ecliptic Z -6.17300227 +/- 0.0003 Ecliptic XDOT -0.00115009 +/- 0.0000 Ecliptic YDOT -0.00274977 +/- 0.0000 Ecliptic ZDOT -0.00066735 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 33.92310864 +/- 0.0013 Geocenter to KBO 33.95947072 +/- 0.0018 # 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.
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 31.42181 10 16 06.210 -03 44 52.31 23.5G 19AT142 G37 2024 12 31.47436 10 16 06.032 -03 44 52.75 19AT142 G37 2024 12 31.52645 10 16 05.854 -03 44 53.37 19AT142 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 -0.12 0.00 0.12
2 0.0001 0.00 0.19 0.00 0.05
3 0.0001 0.00 0.05 0.00 -0.10
4 0.0002 0.00 -0.11 0.00 -0.08
5 0.1421 0.00 0.00 0.00 -0.09
6 0.1424 0.00 -0.06 0.00 0.10
7 0.1425 0.00 0.04 0.00 -0.05
8 0.1425 0.00 0.03 0.00 0.05
9 0.3087 0.00 0.13 0.00 0.01
10 0.3087 0.00 -0.17 0.00 -0.01
11 0.3088 0.00 -0.01 0.00 -0.13
12 0.3088 0.00 0.06 0.00 0.12
13 6.1269 0.00 ( -7.48) 0.00 ( 2.46)
14 6.1271 0.00 ( -7.57) 0.00 ( 2.51)
15 6.1272 0.00 ( -7.67) 0.00 ( 2.38)
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 36.477 36.477 36.477 ecceobj 0.185 0.185 0.185 incobj 18.208 18.208 18.208 qmin 27.998 28.011 27.955 qmax 45.341 45.390 45.302 amean 36.475 36.475 36.475 amin 36.128 36.120 36.126 amax 36.882 36.882 36.882 emean 0.197 0.197 0.197 emin 0.161 0.160 0.161 emax 0.231 0.231 0.231 imean 19.693 19.708 19.699 imin 18.410 18.425 18.371 imax 20.974 21.012 20.985 excite_mean 0.391 0.391 0.391 fracstop 1.000 1.000 1.000 cjmean 2.857 2.856 2.857 libcent 0 179.5 179.2 179.7 libamp 0 63.4 63.7 63.1 libcent 1 181.7 185.7 179.8 libamp 1 151.4 158.3 153.3 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