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: 16CG437 # Created Tue Sep 30 01:11:15 2025 # Orbit generated from Bernstein formalism # Fitting 19 observations of 19 # Arc: 2.93y # First observation: 2016/02/03 # Last observation: 2019/01/08 Preliminary a, adot, b, bdot, g, gdot: -0.000006 0.024972 -0.000000 -0.002035 0.025067 0.000000 # Chi-squared of fit: 167.69 DOF: 32 RMS: 0.53 # Min/Max residuals: -2.89 0.73 # Exact a, adot, b, bdot, g, gdot: 1.201041E-05 2.471543E-02 -1.698640E-06 -2.016063E-03 2.510043E-02 -3.513196E-03 # Covariance matrix: 2.1577E-13 6.2625E-12 1.9600E-15 -4.2656E-13 1.5747E-12 7.8045E-11 6.2625E-12 3.4940E-09 2.7815E-12 -2.3231E-10 6.7837E-10 4.2729E-08 1.9600E-15 2.7815E-12 1.2820E-13 -2.2857E-13 5.2640E-13 3.3981E-11 -4.2656E-13 -2.3231E-10 -2.2857E-13 1.5487E-11 -4.5137E-11 -2.8412E-09 1.5747E-12 6.7837E-10 5.2640E-13 -4.5137E-11 1.3327E-10 8.3002E-09 7.8045E-11 4.2729E-08 3.3981E-11 -2.8412E-09 8.3002E-09 5.2257E-07 # lat0 lon0 xBary yBary zBary JD0 -11.365020 138.490139 0.083909 -0.193065 -0.961451 2457421.963479 # Heliocentric elements and errors Epoch: 2457420.5000 = 2016/02/02 Mean Anomaly: 291.41719 +/- 0.716 Argument of Peri: 332.73067 +/- 2.361 Long of Asc Node: 251.31632 +/- 0.025 Inclination: 12.01933 +/- 0.002 Eccentricity: 0.14760505 +/- 0.0289 Semi-Major Axis: 42.22562085 +/- 0.2375 Time of Perihelion: 2476513.5484 +/- 117.5 Perihelion: 35.99290578 +/- 1.2366 Aphelion: 48.45833592 +/- 1.2500 Period (y) 274.3925 +/- 2.32 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -29.93162970 +/- 0.0134 Ecliptic Y 26.59690451 +/- 0.0119 Ecliptic Z -7.85090251 +/- 0.0036 Ecliptic XDOT -0.00147338 +/- 0.0001 Ecliptic YDOT -0.00230345 +/- 0.0000 Ecliptic ZDOT -0.00014006 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 40.80360838 +/- 0.0126 Geocenter to KBO 39.83995465 +/- 0.0183 # Hcoef: 8.18
The following table shows the complete astrometric record for 16CG437. 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 (16CG437) followed by the observatory code and reference code for the source of the astrometry.
2016 02 03.46269 09 09 41.79 +04 27 14.5 24.8y 16CG437 T09 C~94sP 2016 02 03.48647 09 09 41.63 +04 27 15.0 24.2y 16CG437 T09 C~94sP 2016 02 03.50038 09 09 41.56 +04 27 15.3 24.4y 16CG437 T09 C~94sP 2016 02 03.50858 09 09 41.55 +04 27 15.5 24.5y 16CG437 T09 C~94sP 2016 02 03.53314 09 09 41.42 +04 27 16.0 24.8y 16CG437 T09 C~94sP 2016 02 08.42016 09 09 17.44 +04 28 58.2 25.1r 16CG437 T09 C~94sP 2016 02 08.47058 09 09 16.98 +04 28 59.7 24.7r 16CG437 T09 C~94sP 2016 02 08.53022 09 09 16.90 +04 29 00.5 24.7r 16CG437 T09 C~94sP 2016 03 12.30519 09 06 50.87 +04 42 30.8 23.7z 16CG437 T09 C~94sP 2016 03 12.31841 09 06 50.81 +04 42 31.2 23.7z 16CG437 T09 C~94sP 2016 03 12.33491 09 06 50.77 +04 42 31.9 24.0z 16CG437 T09 C~94sP 2016 03 12.34879 09 06 50.72 +04 42 32.0 23.6z 16CG437 T09 C~94sP 2019 01 06.45393 09 27 46.67 +02 42 57.2 25.6g 16CG437 T09 C~94sP 2019 01 06.48337 09 27 46.57 +02 42 57.9 25.4g 16CG437 T09 C~94sP 2019 01 06.56149 09 27 46.26 +02 42 58.4 25.2g 16CG437 T09 C~94sP 2019 01 06.59550 09 27 46.12 +02 42 58.8 25.7g 16CG437 T09 C~94sP 2019 01 08.47815 09 27 38.63 +02 43 12.6 21.9i 16CG437 T09 C~94sP 2019 01 08.50252 09 27 38.53 +02 43 12.8 21.9i 16CG437 T09 C~94sP 2019 01 08.50520 09 27 38.53 +02 43 12.9 21.8i 16CG437 T09 C~94sP
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 0.73 0.00 0.09
2 0.0001 -2.43 0.14 -0.24 -0.07
3 0.0001 -3.52 0.12 -0.26 -0.06
4 0.0001 -3.72 0.55 -0.12 0.11
5 0.0002 -5.73 0.44 -0.22 0.09
6 0.0136 -378.49 0.21 -9.81 0.09
7 0.0137 -385.50 -2.89 -10.43 -0.46
8 0.0139 -386.88 0.35 -10.02 0.04
9 0.1036 -2712.74 0.05 112.24 -0.09
10 0.1036 -2713.72 -0.10 112.35 -0.08
11 0.1037 -2714.50 0.14 112.84 0.28
12 0.1037 -2715.24 0.26 112.72 0.05
13 2.9240 17412.69 0.03 -1075.39 -0.39
14 2.9241 17411.03 0.13 -1075.17 0.17
15 2.9243 17406.42 0.17 -1076.11 0.14
16 2.9244 17404.29 0.07 -1076.36 0.28
17 2.9295 17292.39 -0.18 -1097.32 -0.11
18 2.9296 17290.89 -0.18 -1097.58 -0.11
19 2.9296 17290.86 -0.04 -1097.49 0.02
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.
16CG437 quality flag:2 Type: SCATEXTD CENTAURS SCATEXTD axisobj 42.010 42.645 41.872 ecceobj 0.142 0.218 0.095 incobj 11.994 11.987 11.999 qmin 35.213 30.094 37.131 qmax 49.100 63.315 46.802 amean 41.971 44.144 41.847 amin 41.612 41.199 41.514 amax 42.363 47.521 42.200 emean 0.136 0.270 0.092 emin 0.112 0.208 0.073 emax 0.160 0.348 0.110 imean 13.816 13.138 13.759 imin 12.396 9.127 12.768 imax 14.941 15.879 14.646 excite_mean 0.275 0.355 0.255 fracstop 1.000 1.000 1.000 cjmean 2.988 2.946 2.999 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 179.6 176.9 178.0 kozaiamp 180.0 179.9 180.0