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: 16LA106 # Created Tue Apr 1 01:10:49 2025 # Orbit generated from Bernstein formalism # Fitting 17 observations of 17 # Arc: 90.79d # First observation: 2016/03/07 # Last observation: 2016/06/06 Preliminary a, adot, b, bdot, g, gdot: -0.000056 0.029904 0.000004 -0.012992 0.028326 0.000000 # Chi-squared of fit: 8.80 DOF: 28 RMS: 0.13 # Min/Max residuals: -0.26 0.28 # Exact a, adot, b, bdot, g, gdot: 1.672736E-05 3.042910E-02 -7.299858E-06 -1.300133E-02 2.848907E-02 2.506032E-03 # Covariance matrix: 3.6733E-13 1.2460E-12 -1.2633E-14 -3.5660E-13 1.1981E-12 1.2560E-10 1.2460E-12 4.4526E-09 -2.3787E-11 9.2356E-11 7.9127E-10 5.8154E-10 -1.2633E-14 -2.3787E-11 3.6488E-13 -1.6325E-12 -4.2344E-12 -2.9903E-12 -3.5660E-13 9.2356E-11 -1.6325E-12 1.1752E-11 1.3998E-11 -3.8398E-10 1.1981E-12 7.9127E-10 -4.2344E-12 1.3998E-11 1.4554E-10 8.5804E-10 1.2560E-10 5.8154E-10 -2.9903E-12 -3.8398E-10 8.5804E-10 1.2226E-07 # lat0 lon0 xBary yBary zBary JD0 11.866720 -151.291093 0.657294 0.152185 -0.723564 2457455.097699 # Heliocentric elements and errors Epoch: 2457450.5000 = 2016/03/03 Mean Anomaly: 10.71378 +/- 1.670 Argument of Peri: 134.01446 +/- 2.893 Long of Asc Node: 53.19237 +/- 0.052 Inclination: 25.48584 +/- 0.043 Eccentricity: 0.24376157 +/- 0.0051 Semi-Major Axis: 46.92787103 +/- 0.1966 Time of Perihelion: 2453956.0010 +/- 544.3 Perihelion: 35.48865928 +/- 0.2820 Aphelion: 58.36708278 +/- 0.3424 Period (y) 321.4804 +/- 2.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -31.09606976 +/- 0.0128 Ecliptic Y -16.28193525 +/- 0.0070 Ecliptic Z 7.21782725 +/- 0.0031 Ecliptic XDOT 0.00097251 +/- 0.0000 Ecliptic YDOT -0.00280843 +/- 0.0000 Ecliptic ZDOT -0.00117321 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 35.83523406 +/- 0.0115 Geocenter to KBO 35.10117558 +/- 0.0149 # Hcoef: 9.22
The following table shows the complete astrometric record for 16LA106. 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 (16LA106) followed by the observatory code and reference code for the source of the astrometry.
2016 03 07.59691 14 03 28.94 +00 05 45.4 25.6g 16LA106 T09 C~89Tj 2016 03 07.61343 14 03 28.87 +00 05 45.9 25.4g 16LA106 T09 C~89Tj 2016 03 07.62907 14 03 28.83 +00 05 46.2 25.8g 16LA106 T09 C~89Tj 2016 03 07.64626 14 03 28.76 +00 05 46.7 25.5g 16LA106 T09 C~89Tj 2016 04 08.53825 14 01 05.01 +00 20 12.9 24.6r 16LA106 T09 C~89Tj 2016 04 08.56035 14 01 04.87 +00 20 13.2 25.2r 16LA106 T09 C~89Tj 2016 04 08.57093 14 01 04.84 +00 20 13.4 24.7r 16LA106 T09 C~89Tj 2016 04 11.44440 14 00 49.64 +00 21 25.8 24.2i 16LA106 T09 C~89Tj 2016 04 11.53272 14 00 49.17 +00 21 28.1 24.3i 16LA106 T09 C~89Tj 2016 04 11.55443 14 00 49.06 +00 21 28.8 24.1i 16LA106 T09 C~89Tj 2016 06 05.37581 13 56 19.66 +00 33 06.3 24.7r 16LA106 T09 C~89Tj 2016 06 05.38217 13 56 19.63 +00 33 06.6 24.9r 16LA106 T09 C~89Tj 2016 06 05.40134 13 56 19.56 +00 33 06.5 24.5r 16LA106 T09 C~89Tj 2016 06 05.41411 13 56 19.51 +00 33 06.5 24.7r 16LA106 T09 C~89Tj 2016 06 06.34511 13 56 16.18 +00 33 03.3 24.9g 16LA106 T09 C~89Tj 2016 06 06.35361 13 56 16.17 +00 33 03.5 24.9g 16LA106 T09 C~89Tj 2016 06 06.38976 13 56 16.02 +00 33 02.9 25.1g 16LA106 T09 C~89Tj
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 0.02
2 0.0000 -1.16 -0.14 0.10 0.02
3 0.0001 -1.83 0.12 0.17 -0.01
4 0.0001 -2.98 -0.02 0.28 -0.02
5 0.0875 -2326.03 0.06 59.83 0.27
6 0.0875 -2328.11 -0.16 59.37 -0.09
7 0.0875 -2328.60 0.23 59.40 -0.02
8 0.0954 -2567.56 -0.11 47.72 -0.22
9 0.0956 -2574.97 -0.03 47.42 -0.07
10 0.0957 -2576.76 0.02 47.50 0.12
11 0.2458 -6609.31 0.10 -708.46 -0.18
12 0.2458 -6609.83 -0.10 -708.34 0.09
13 0.2459 -6610.79 -0.07 -708.80 0.05
14 0.2459 -6611.49 -0.12 -709.06 0.07
15 0.2485 -6657.23 -0.05 -729.49 -0.05
16 0.2485 -6657.44 0.17 -729.36 0.28
17 0.2486 -6659.35 0.07 -730.70 -0.26
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.
16LA106 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 46.295 47.098 45.578 ecceobj 0.233 0.252 0.217 incobj 25.550 25.437 25.673 qmin 34.493 33.925 34.630 qmax 59.291 61.522 57.689 amean 46.587 47.399 45.919 amin 46.186 46.900 45.496 amax 47.122 48.059 46.429 emean 0.238 0.257 0.224 emin 0.221 0.231 0.206 emax 0.259 0.283 0.244 imean 24.416 24.264 24.471 imin 23.790 23.541 23.888 imax 24.931 25.141 24.990 excite_mean 0.477 0.485 0.471 fracstop 1.000 1.000 1.000 cjmean 2.847 2.846 2.847 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 186.9 183.4 182.6 kozaiamp 180.0 180.0 180.0