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: 16GZ276 # Created Tue Jan 21 02:10:54 2025 # Orbit generated from Bernstein formalism # Fitting 15 observations of 15 # Arc: 2.11y # First observation: 2016/04/10 # Last observation: 2018/05/19 Preliminary a, adot, b, bdot, g, gdot: 0.000025 0.010780 0.000017 -0.002631 0.014816 0.000000 # Chi-squared of fit: 5.22 DOF: 24 RMS: 0.10 # Min/Max residuals: -0.23 0.22 # Exact a, adot, b, bdot, g, gdot: 1.162736E-05 1.064558E-02 -2.386644E-06 -2.585203E-03 1.469323E-02 -8.305304E-03 # Covariance matrix: 4.2970E-13 -1.7300E-13 1.4494E-14 -2.3154E-14 3.0844E-13 3.9624E-12 -1.7300E-13 9.5042E-13 7.7385E-14 -2.4334E-13 6.8697E-13 3.8984E-11 1.4494E-14 7.7385E-14 3.3737E-13 -2.1540E-13 1.0432E-13 4.1938E-12 -2.3154E-14 -2.4334E-13 -2.1540E-13 2.3236E-13 -2.6283E-13 -1.2488E-11 3.0844E-13 6.8697E-13 1.0432E-13 -2.6283E-13 1.4490E-12 4.2842E-11 3.9624E-12 3.8984E-11 4.1938E-12 -1.2488E-11 4.2842E-11 2.0085E-09 # lat0 lon0 xBary yBary zBary JD0 17.506877 -153.801760 0.096793 0.298859 -0.947019 2457488.840929 # Heliocentric elements and errors Epoch: 2457480.5000 = 2016/04/02 Mean Anomaly: 345.55177 +/- 0.291 Argument of Peri: 219.28189 +/- 0.019 Long of Asc Node: 76.48481 +/- 0.005 Inclination: 21.96691 +/- 0.001 Eccentricity: 0.73817159 +/- 0.0041 Semi-Major Axis: 148.20631813 +/- 1.9700 Time of Perihelion: 2483929.5782 +/- 75.4 Perihelion: 38.80462440 +/- 0.7933 Aphelion: 257.60801186 +/- 3.4769 Period (y) 1804.2980 +/- 35.98 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -59.17569462 +/- 0.0048 Ecliptic Y -29.00904710 +/- 0.0023 Ecliptic Z 20.47326651 +/- 0.0017 Ecliptic XDOT 0.00207016 +/- 0.0000 Ecliptic YDOT -0.00119925 +/- 0.0000 Ecliptic ZDOT -0.00092493 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 69.01045058 +/- 0.0042 Geocenter to KBO 68.05855377 +/- 0.0056 # Hcoef: 6.91
The following table shows the complete astrometric record for 16GZ276. 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 (16GZ276) followed by the observatory code and reference code for the source of the astrometry.
2016 04 10.34014 14 02 22.574 +06 13 48.30 25.2r 16GZ276 568 C~3wqc 2016 04 10.44891 14 02 22.265 +06 13 50.28 25.1r 16GZ276 568 C~3wqc 2016 06 04.37851 13 59 54.153 +06 21 25.27 16GZ276 568 C~3wqc 2016 06 04.41293 13 59 54.068 +06 21 25.36 25.2r 16GZ276 568 C~3wqc 2017 04 22.30315 14 03 54.475 +05 55 07.80 25.4r 16GZ276 304 C~3wqc 2017 04 23.21424 14 03 51.775 +05 55 20.30 25.1r 16GZ276 304 C~3wqc 2017 04 23.27375 14 03 51.599 +05 55 21.00 25.1r 16GZ276 304 C~3wqc 2017 04 23.31997 14 03 51.473 +05 55 21.79 25.2r 16GZ276 304 C~3wqc 2018 03 11.31116 14 07 53.787 +05 20 20.69 25.2r 16GZ276 304 C~3wqc 2018 03 11.31912 14 07 53.764 +05 20 20.98 16GZ276 304 C~3wqc 2018 03 11.37465 14 07 53.668 +05 20 22.18 16GZ276 304 C~3wqc 2018 03 12.34484 14 07 51.658 +05 20 41.67 16GZ276 304 C~3wqc 2018 03 12.37311 14 07 51.607 +05 20 42.43 16GZ276 304 C~3wqc 2018 05 17.10836 14 04 51.362 +05 37 16.31 25.2r 16GZ276 304 C~3wqc 2018 05 19.21543 14 04 45.674 +05 37 27.92 25.1r 16GZ276 304 C~3wqc
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 -0.04 0.00 -0.08
2 0.0003 -5.01 -0.01 0.19 0.10
3 0.1507 -2229.72 0.12 -366.71 -0.01
4 0.1508 -2230.94 -0.10 -367.08 0.07
5 1.0321 1681.91 0.12 -553.05 0.05
6 1.0346 1639.83 -0.11 -555.87 -0.10
7 1.0347 1637.12 -0.04 -556.17 -0.19
8 1.0349 1635.09 0.07 -556.10 0.03
9 1.9164 5768.00 0.06 -1212.24 -0.07
10 1.9164 5767.58 -0.07 -1212.09 0.01
11 1.9166 5765.80 0.17 -1211.49 0.19
12 1.9192 5730.74 -0.09 -1204.16 -0.00
13 1.9193 5729.76 -0.04 -1203.72 0.22
14 2.0993 2859.80 0.04 -1247.29 -0.00
15 2.1051 2776.39 -0.08 -1267.03 -0.23
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.
16GZ276 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 144.002 149.669 138.826 ecceobj 0.734 0.746 0.722 incobj 22.018 22.019 22.016 qmin 36.813 36.345 36.931 qmax 268.415 280.694 257.798 amean 146.710 152.127 142.011 amin 142.007 147.701 137.950 amax 153.342 159.247 148.122 emean 0.739 0.750 0.729 emin 0.728 0.739 0.716 emax 0.751 0.763 0.741 imean 20.164 20.055 20.090 imin 19.808 19.497 19.570 imax 20.863 21.095 20.951 excite_mean 0.815 0.825 0.805 fracstop 1.000 1.000 1.000 cjmean 2.998 2.991 3.006 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 259.1 268.8 269.8 kozaiamp 40.3 49.9 50.0