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: 16CD289 # Created Wed Dec 25 02:10:34 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 16 observations of 16 # Arc: 6.23y # First observation: 2016/02/05 # Last observation: 2022/04/30 # Chi-squared of fit: 42.43 DOF: 26 RMS: 0.29 # Min/Max residuals: -0.58 0.46 # Exact a, adot, b, bdot, g, gdot: 7.955604E-06 9.066151E-03 -6.506760E-06 -4.772019E-03 1.532483E-02 4.284372E-04 # Covariance matrix: 2.5343E-13 -4.7188E-14 6.2368E-15 3.1186E-16 1.2267E-13 2.2468E-15 -4.7188E-14 3.3092E-13 8.0798E-14 -1.9408E-13 2.3923E-13 6.9678E-12 6.2368E-15 8.0798E-14 2.2735E-13 -9.2269E-14 8.1257E-14 1.8041E-12 3.1186E-16 -1.9408E-13 -9.2269E-14 1.3535E-13 -1.5478E-13 -4.2967E-12 1.2267E-13 2.3923E-13 8.1257E-14 -1.5478E-13 5.1592E-13 5.5922E-12 2.2468E-15 6.9678E-12 1.8041E-12 -4.2967E-12 5.5922E-12 1.5429E-10 # lat0 lon0 xBary yBary zBary JD0 13.678229 136.616070 0.019039 0.232919 -0.956253 2457423.843909 # Heliocentric elements and errors Epoch: 2457424.5000 = 2016/02/06 Mean Anomaly: 168.59811 +/- 0.205 Argument of Peri: 339.77637 +/- 0.209 Long of Asc Node: 340.59062 +/- 0.001 Inclination: 30.51753 +/- 0.001 Eccentricity: 0.24884539 +/- 0.0001 Semi-Major Axis: 53.15288810 +/- 0.0063 Time of Perihelion: 2391135.8866 +/- 81.5 Perihelion: 39.92603697 +/- 0.0080 Aphelion: 66.37973922 +/- 0.0101 Period (y) 387.5239 +/- 0.07 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -46.78557934 +/- 0.0022 Ecliptic Y 44.23835230 +/- 0.0021 Ecliptic Z 15.43000627 +/- 0.0007 Ecliptic XDOT -0.00131358 +/- 0.0000 Ecliptic YDOT -0.00099456 +/- 0.0000 Ecliptic ZDOT -0.00081025 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 66.21180872 +/- 0.0021 Geocenter to KBO 65.25358170 +/- 0.0031 # Hcoef: 7.14
The following table shows the complete astrometric record for 16CD289. 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 (16CD289) followed by the observatory code and reference code for the source of the astrometry.
2016 02 05.34312 09 34 53.750 +28 50 40.10 25.5r 16CD289 568 C~2ZtI 2016 02 05.48400 09 34 53.229 +28 50 42.19 25.3r 16CD289 568 C~2ZtI 2016 02 05.59331 09 34 52.823 +28 50 43.79 25.4r 16CD289 568 C~2ZtI 2016 03 10.14258 09 32 54.345 +28 56 06.26 16CD289 304 C~2ZtI 2016 03 10.19069 09 32 54.190 +28 56 06.42 16CD289 304 C~2ZtI 2016 04 10.25221 09 31 36.588 +28 55 23.08 25.2r 16CD289 568 C~2ZtI 2017 04 25.01050 09 33 07.567 +28 27 44.57 25.5r 16CD289 304 C~2ZtI 2017 04 26.03188 09 33 06.750 +28 27 32.50 25.6r 16CD289 304 C~2ZtI 2020 01 25.35601 09 42 43.022 +27 04 14.49 25.2r 16CD289 568 C~6DIB 2020 01 25.59555 09 42 42.192 +27 04 18.54 25.0r 16CD289 568 C~6DIB 2021 01 15.31704 09 44 57.764 +26 35 34.95 25.3r 16CD289 304 C~6DIB 2021 01 17.26153 09 44 51.652 +26 36 08.79 25.2r 16CD289 304 C~6DIB 2021 01 17.30337 09 44 51.521 +26 36 09.59 25.4r 16CD289 304 C~6DIB 2021 01 18.30712 09 44 48.327 +26 36 26.58 25.1r 16CD289 304 C~6DIB 2022 04 29.01319 09 41 53.077 +26 19 35.24 25.3r 16CD289 304 C~6DIB 2022 04 30.01372 09 41 52.373 +26 19 24.56 25.0r 16CD289 304 C~6DIB
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 0.43 0.00 0.21
2 0.0004 0.00 0.46 0.00 0.28
3 0.0007 0.00 0.45 0.00 0.35
4 0.0925 0.00 -0.23 0.00 -0.17
5 0.0927 0.00 -0.22 0.00 -0.22
6 0.1777 0.00 0.14 0.00 -0.28
7 1.2174 0.00 -0.52 0.00 -0.10
8 1.2202 0.00 -0.58 0.00 -0.12
9 3.9699 0.00 -0.14 0.00 -0.30
10 3.9706 0.00 -0.18 0.00 -0.22
11 4.9445 0.00 -0.02 0.00 -0.01
12 4.9498 0.00 -0.16 0.00 0.30
13 4.9499 0.00 -0.10 0.00 0.38
14 4.9527 0.00 -0.00 0.00 0.15
15 6.2277 0.00 0.42 0.00 -0.26
16 6.2304 0.00 0.30 0.00 -0.03
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.
16CD289 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 53.068 53.068 53.068 ecceobj 0.253 0.253 0.253 incobj 30.674 30.674 30.674 qmin 37.399 37.398 37.429 qmax 69.620 69.373 69.472 amean 53.081 53.082 53.085 amin 52.557 52.564 52.568 amax 53.756 53.717 53.725 emean 0.268 0.268 0.268 emin 0.244 0.244 0.244 emax 0.295 0.293 0.294 imean 31.129 31.134 31.152 imin 30.568 30.580 30.599 imax 31.844 31.844 31.843 excite_mean 0.583 0.583 0.583 fracstop 1.000 1.000 1.000 cjmean 2.756 2.756 2.756 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 162.3 161.9 160.4 kozaiamp 180.0 180.0 180.0