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: 19AG142 # Created Wed May 21 01:11:14 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 17 observations of 20 # Arc: 83.97d # First observation: 2019/01/11 # Last observation: 2019/04/05 # Chi-squared of fit: 10.47 DOF: 28 RMS: 0.14 # Min/Max residuals: -0.21 0.27 # Exact a, adot, b, bdot, g, gdot: 1.685365E-05 2.876743E-02 -2.065196E-06 -2.556689E-03 2.643121E-02 -3.901466E-03 # Covariance matrix: 3.4520E-13 4.5458E-13 1.9588E-14 -5.0456E-14 3.8337E-13 2.8532E-12 4.5458E-13 5.0692E-10 1.1601E-11 -5.7671E-11 1.0493E-10 3.3030E-09 1.9588E-14 1.1601E-11 3.5560E-13 -1.3359E-12 2.4112E-12 7.5583E-11 -5.0456E-14 -5.7671E-11 -1.3359E-12 6.5757E-12 -1.1934E-11 -3.7579E-10 3.8337E-13 1.0493E-10 2.4112E-12 -1.1934E-11 2.2041E-11 6.8347E-10 2.8532E-12 3.3030E-09 7.5583E-11 -3.7579E-10 6.8347E-10 2.1523E-08 # lat0 lon0 xBary yBary zBary JD0 -6.612582 166.179971 0.816859 -0.064471 -0.556907 2458495.042281 # Heliocentric elements and errors Epoch: 2458494.5000 = 2019/01/11 Mean Anomaly: 328.70475 +/- 0.726 Argument of Peri: 281.39923 +/- 1.319 Long of Asc Node: 293.91827 +/- 0.006 Inclination: 8.35483 +/- 0.001 Eccentricity: 0.23992859 +/- 0.0029 Semi-Major Axis: 47.01862680 +/- 0.0166 Time of Perihelion: 2468731.6562 +/- 244.3 Perihelion: 35.73751415 +/- 0.1380 Aphelion: 58.29973946 +/- 0.1390 Period (y) 322.4134 +/- 0.17 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -36.84296970 +/- 0.0065 Ecliptic Y 9.89647123 +/- 0.0016 Ecliptic Z -4.35690337 +/- 0.0008 Ecliptic XDOT -0.00028446 +/- 0.0000 Ecliptic YDOT -0.00299865 +/- 0.0000 Ecliptic ZDOT -0.00021674 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.39707168 +/- 0.0062 Geocenter to KBO 37.83418121 +/- 0.0067 # Hcoef: 8.52
The following table shows the complete astrometric record for 19AG142. 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 (19AG142) followed by the observatory code and reference code for the source of the astrometry.
2019 01 11.54148 10 58 52.94 -00 38 44.0 23.6z 19AG142 T09 C~870S 2019 01 11.57352 10 58 52.84 -00 38 44.0 23.9z 19AG142 T09 C~870S 2019 01 11.61693 10 58 52.73 -00 38 43.6 24.7z 19AG142 T09 C~870S 2019 01 11.65742 10 58 52.63 -00 38 43.6 24.5z 19AG142 T09 C~870S 2019 03 15.34612 10 54 25.28 -00 17 16.4 23.0y 19AG142 T09 C~870S 2019 03 15.39221 10 54 25.05 -00 17 14.9 23.6y 19AG142 T09 C~870S 2019 03 15.42212 10 54 24.92 -00 17 14.2 23.5y 19AG142 T09 C~870S 2019 03 15.47604 10 54 24.63 -00 17 12.4 23.8y 19AG142 T09 C~870S 2019 03 15.51620 10 54 24.46 -00 17 11.2 24.2y 19AG142 T09 C~870S 2019 04 04.38985 10 52 55.75 -00 07 15.6 25.0g 19AG142 T09 C~870S 2019 04 04.41725 10 52 55.64 -00 07 14.8 24.8g 19AG142 T09 C~870S 2019 04 04.42780 10 52 55.58 -00 07 14.2 24.9g 19AG142 T09 C~870S 2019 04 05.38960 10 52 51.74 -00 06 46.4 24.5r 19AG142 T09 C~870S 2019 04 05.43532 10 52 51.55 -00 06 45.2 24.7r 19AG142 T09 C~870S 2019 04 05.46890 10 52 51.44 -00 06 43.8 24.5r 19AG142 T09 C~870S 2019 04 05.50116 10 52 51.29 -00 06 43.0 24.7r 19AG142 T09 C~870S 2019 04 05.51163 10 52 51.25 -00 06 42.7 24.6r 19AG142 T09 C~870S 2025 04 23.14789 11 28 02.955 -04 43 29.19 24.7G 19AG142 G37 2025 04 23.18143 11 28 02.845 -04 43 28.02 19AG142 G37 2025 04 23.21508 11 28 02.743 -04 43 27.21 19AG142 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 0.07
2 0.0001 0.00 -0.10 0.00 -0.08
3 0.0002 0.00 -0.00 0.00 0.10
4 0.0003 0.00 0.13 0.00 -0.10
5 0.1719 0.00 0.05 0.00 -0.09
6 0.1721 0.00 -0.02 0.00 0.02
7 0.1722 0.00 0.22 0.00 -0.18
8 0.1723 0.00 -0.18 0.00 0.00
9 0.1724 0.00 0.21 0.00 -0.01
10 0.2268 0.00 0.18 0.00 -0.21
11 0.2269 0.00 0.22 0.00 -0.21
12 0.2269 0.00 -0.04 0.00 0.08
13 0.2296 0.00 -0.07 0.00 -0.03
14 0.2297 0.00 -0.14 0.00 -0.16
15 0.2298 0.00 0.24 0.00 0.27
16 0.2299 0.00 -0.07 0.00 0.14
17 0.2299 0.00 -0.04 0.00 0.14
18 6.2796 0.00 ( 125.63) 0.00 ( -24.97)
19 6.2796 0.00 ( 125.77) 0.00 ( -24.79)
20 6.2797 0.00 ( 126.03) 0.00 ( -24.97)
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.
19AG142 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 46.801 46.801 46.801 ecceobj 0.233 0.233 0.233 incobj 8.336 8.336 8.336 qmin 35.269 35.253 35.239 qmax 59.305 59.170 59.146 amean 46.953 46.954 46.954 amin 46.534 46.515 46.533 amax 47.511 47.568 47.539 emean 0.231 0.230 0.230 emin 0.214 0.214 0.214 emax 0.248 0.248 0.247 imean 10.336 10.343 10.342 imin 9.398 9.408 9.408 imax 11.106 11.121 11.105 excite_mean 0.292 0.292 0.292 fracstop 1.000 1.000 1.000 cjmean 3.031 3.031 3.031 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 179.3 179.3 179.4 kozaiamp 180.0 179.9 180.0