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: 19AS142 # Created Tue Apr 1 01:11:10 2025 # Orbit generated from Bernstein formalism # Fitting 15 observations of 15 # Arc: 112.78d # First observation: 2018/11/15 # Last observation: 2019/03/08 Preliminary a, adot, b, bdot, g, gdot: 0.000003 0.023643 0.000016 -0.014660 0.024773 0.000000 # Chi-squared of fit: 11.32 DOF: 24 RMS: 0.15 # Min/Max residuals: -0.43 0.24 # Exact a, adot, b, bdot, g, gdot: 1.463064E-05 2.276589E-02 -9.901003E-06 -1.431786E-02 2.409087E-02 -3.586299E-03 # Covariance matrix: 3.6326E-13 -3.3769E-12 1.6952E-15 -5.3290E-13 -2.5237E-13 4.2182E-11 -3.3769E-12 1.9466E-10 3.5425E-12 -7.5639E-12 7.3702E-11 5.4147E-09 1.6952E-15 3.5425E-12 3.6564E-13 -1.6411E-12 1.8280E-12 1.7534E-10 -5.3290E-13 -7.5639E-12 -1.6411E-12 1.2838E-11 -9.0624E-12 -1.2356E-09 -2.5237E-13 7.3702E-11 1.8280E-12 -9.0624E-12 3.5227E-11 3.1800E-09 4.2182E-11 5.4147E-09 1.7534E-10 -1.2356E-09 3.1800E-09 3.3243E-07 # lat0 lon0 xBary yBary zBary JD0 -10.316472 146.814856 0.992720 0.011506 0.062622 2458438.058881 # Heliocentric elements and errors Epoch: 2458430.5000 = 2018/11/08 Mean Anomaly: 344.63862 +/- 1.491 Argument of Peri: 232.79619 +/- 3.743 Long of Asc Node: 309.74797 +/- 0.016 Inclination: 33.99706 +/- 0.026 Eccentricity: 0.36243548 +/- 0.0147 Semi-Major Axis: 62.04763812 +/- 0.7259 Time of Perihelion: 2466048.0281 +/- 727.1 Perihelion: 39.55937271 +/- 1.0252 Aphelion: 84.53590353 +/- 1.3472 Period (y) 488.7605 +/- 8.58 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -33.58116742 +/- 0.0084 Ecliptic Y 23.14085086 +/- 0.0055 Ecliptic Z -7.43417353 +/- 0.0018 Ecliptic XDOT -0.00082900 +/- 0.0001 Ecliptic YDOT -0.00254660 +/- 0.0000 Ecliptic ZDOT -0.00152808 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 41.45432088 +/- 0.0075 Geocenter to KBO 41.50949341 +/- 0.0102 # Hcoef: 8.42
The following table shows the complete astrometric record for 19AS142. 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 (19AS142) followed by the observatory code and reference code for the source of the astrometry.
2018 11 15.55808 09 42 06.73 +02 51 35.8 24.2z 19AS142 T09 C~870S 2018 11 15.56728 09 42 06.72 +02 51 35.1 23.8z 19AS142 T09 C~870S 2018 11 15.59379 09 42 06.74 +02 51 34.9 24.0z 19AS142 T09 C~870S 2018 11 15.61997 09 42 06.76 +02 51 34.1 24.3z 19AS142 T09 C~870S 2019 01 06.49177 09 40 35.59 +02 39 05.9 25.4g 19AS142 T09 C~870S 2019 01 06.55714 09 40 35.37 +02 39 05.7 25.0g 19AS142 T09 C~870S 2019 01 06.56568 09 40 35.32 +02 39 05.7 25.1g 19AS142 T09 C~870S 2019 01 06.58908 09 40 35.23 +02 39 05.6 24.9g 19AS142 T09 C~870S 2019 01 06.59969 09 40 35.19 +02 39 05.7 25.4g 19AS142 T09 C~870S 2019 01 06.61913 09 40 35.11 +02 39 05.6 25.3g 19AS142 T09 C~870S 2019 03 08.26245 09 35 52.21 +02 51 56.4 25.2r 19AS142 T09 C~870S 2019 03 08.29600 09 35 52.08 +02 51 57.5 24.6r 19AS142 T09 C~870S 2019 03 08.31497 09 35 51.99 +02 51 57.9 24.4r 19AS142 T09 C~870S 2019 03 08.31706 09 35 51.97 +02 51 58.0 24.7r 19AS142 T09 C~870S 2019 03 08.33820 09 35 51.88 +02 51 58.6 24.6r 19AS142 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 0.06 0.00 0.10
2 0.0000 0.09 0.00 -0.71 -0.39
3 0.0001 0.44 -0.09 -0.80 0.16
4 0.0002 0.99 0.03 -1.45 0.13
5 0.1422 -1037.68 -0.33 -1162.02 0.10
6 0.1424 -1040.73 0.23 -1163.31 0.08
7 0.1424 -1041.43 -0.00 -1163.56 -0.00
8 0.1425 -1042.67 0.05 -1164.10 -0.09
9 0.1425 -1043.27 0.04 -1164.21 0.01
10 0.1425 -1044.37 0.01 -1164.70 -0.10
11 0.3086 -5299.36 -0.02 -1847.60 -0.43
12 0.3087 -5301.57 0.14 -1847.21 0.07
13 0.3087 -5302.97 0.07 -1847.28 0.06
14 0.3087 -5303.29 -0.10 -1847.29 0.06
15 0.3088 -5304.76 -0.08 -1847.17 0.24
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.
19AS142 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 61.914 63.497 61.160 ecceobj 0.358 0.394 0.336 incobj 33.959 34.029 33.895 qmin 38.619 37.525 39.354 qmax 86.448 91.045 84.049 amean 61.981 63.624 61.189 amin 61.307 62.915 60.550 amax 62.846 64.609 62.029 emean 0.359 0.392 0.339 emin 0.341 0.373 0.322 emax 0.376 0.409 0.355 imean 35.439 35.622 35.281 imin 35.045 35.175 34.916 imax 36.023 36.275 35.763 excite_mean 0.682 0.702 0.670 fracstop 1.000 1.000 1.000 cjmean 2.667 2.647 2.681 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 178.8 177.6 184.1 kozaiamp 180.0 180.0 180.0