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: 14YD92 # Created Tue Apr 1 01:10:17 2025 # Orbit generated from Bernstein formalism # Fitting 17 observations of 17 # Arc: 3.92y # First observation: 2014/12/16 # Last observation: 2018/11/15 Preliminary a, adot, b, bdot, g, gdot: 0.000026 0.020024 -0.000029 -0.005697 0.020842 0.000000 # Chi-squared of fit: 7.26 DOF: 28 RMS: 0.12 # Min/Max residuals: -0.30 0.27 # Exact a, adot, b, bdot, g, gdot: 1.556819E-05 2.011702E-02 -4.065922E-06 -5.728445E-03 2.034643E-02 1.950352E-03 # Covariance matrix: 2.0435E-13 -1.5800E-13 -6.0276E-15 2.8664E-14 -1.4647E-14 -1.2509E-12 -1.5800E-13 5.3771E-13 3.5526E-14 -1.5067E-13 -1.6605E-13 5.9958E-12 -6.0276E-15 3.5526E-14 1.8535E-13 -7.0656E-14 -2.9554E-14 3.9812E-13 2.8664E-14 -1.5067E-13 -7.0656E-14 8.2720E-14 6.7582E-14 -1.7773E-12 -1.4647E-14 -1.6605E-13 -2.9554E-14 6.7582E-14 9.3612E-13 -6.3463E-13 -1.2509E-12 5.9958E-12 3.9812E-13 -1.7773E-12 -6.3463E-13 7.3880E-11 # lat0 lon0 xBary yBary zBary JD0 -33.635712 29.694446 -0.796440 -0.319549 -0.480674 2457007.699858 # Heliocentric elements and errors Epoch: 2457000.5000 = 2014/12/09 Mean Anomaly: 10.57389 +/- 0.033 Argument of Peri: 224.63647 +/- 0.077 Long of Asc Node: 147.50138 +/- 0.001 Inclination: 36.28884 +/- 0.000 Eccentricity: 0.35258372 +/- 0.0004 Semi-Major Axis: 75.03754426 +/- 0.0360 Time of Perihelion: 2450027.0321 +/- 21.5 Perihelion: 48.58052790 +/- 0.0357 Aphelion: 101.49456062 +/- 0.0557 Period (y) 650.0191 +/- 0.47 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 35.64998884 +/- 0.0017 Ecliptic Y 21.25005710 +/- 0.0010 Ecliptic Z -27.22420186 +/- 0.0013 Ecliptic XDOT -0.00152614 +/- 0.0000 Ecliptic YDOT 0.00224309 +/- 0.0000 Ecliptic ZDOT -0.00078705 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 49.63510651 +/- 0.0015 Geocenter to KBO 49.14867015 +/- 0.0023 # Hcoef: 6.63
The following table shows the complete astrometric record for 14YD92. 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 (14YD92) followed by the observatory code and reference code for the source of the astrometry.
2014 12 16.19908 02 38 28.726 -20 07 46.61 23.8r 14YD92 W84 C~55TQ 2014 12 16.20044 02 38 28.722 -20 07 46.64 23.6i 14YD92 W84 C~55TQ 2014 12 20.19065 02 38 17.868 -20 06 35.63 23.7r 14YD92 W84 C~55TQ 2014 12 23.12342 02 38 10.536 -20 05 35.93 22.6i 14YD92 W84 C~55TQ 2014 12 24.17849 02 38 08.041 -20 05 12.60 23.7g 14YD92 W84 C~55TQ 2014 12 24.17984 02 38 08.031 -20 05 12.79 23.1r 14YD92 W84 C~55TQ 2015 01 13.12309 02 37 36.141 -19 55 40.10 24.4g 14YD92 W84 C~55TQ 2015 11 20.27882 02 45 04.658 -20 02 50.35 23.5r 14YD92 W84 C~55TQ 2016 11 05.30316 02 51 05.756 -19 52 09.49 22.6i 14YD92 W84 C~55TQ 2016 11 05.30453 02 51 05.763 -19 52 09.69 23.5r 14YD92 W84 C~55TQ 2016 11 05.30591 02 51 05.765 -19 52 09.77 24.5g 14YD92 W84 C~55TQ 2017 10 11.31762 02 57 44.841 -19 32 43.71 23.4i 14YD92 W84 C~55TQ 2017 12 24.17226 02 53 10.423 -19 41 56.66 23.7i 14YD92 W84 C~55TQ 2017 12 24.17362 02 53 10.421 -19 41 56.58 23.7r 14YD92 W84 C~55TQ 2018 11 15.29230 03 00 26.484 -19 36 39.12 23.4i 14YD92 W84 C~55TQ 2018 11 15.29367 03 00 26.464 -19 36 39.14 23.7r 14YD92 W84 C~55TQ 2018 11 15.29505 03 00 26.444 -19 36 39.22 24.8g 14YD92 W84 C~55TQ
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 0.01 0.00 -0.08
2 0.0000 -0.06 -0.01 -0.01 -0.13
3 0.0109 -116.09 0.00 122.26 -0.03
4 0.0190 -190.19 -0.05 215.76 0.00
5 0.0218 -214.30 0.14 250.37 0.26
6 0.0219 -214.50 -0.03 250.25 0.09
7 0.0765 -422.31 -0.08 947.98 -0.01
8 0.9283 5287.66 -0.01 -1803.85 0.01
9 1.8894 10246.41 -0.00 -3155.23 0.12
10 1.8894 10246.42 0.10 -3155.45 -0.12
11 1.8894 10246.42 0.18 -3155.54 -0.21
12 2.8203 15915.09 -0.30 -4285.31 0.04
13 3.0225 12111.85 -0.10 -3271.82 -0.03
14 3.0225 12111.86 -0.06 -3271.74 0.01
15 3.9154 17934.40 0.27 -5413.05 -0.03
16 3.9154 17934.13 0.08 -5412.95 0.04
17 3.9154 17933.84 -0.13 -5412.91 0.07
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.
14YD92 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 76.191 76.306 76.077 ecceobj 0.363 0.364 0.362 incobj 36.230 36.231 36.230 qmin 47.271 47.282 47.261 qmax 104.433 104.665 104.088 amean 75.154 75.266 75.041 amin 74.233 74.373 74.102 amax 76.281 76.415 76.125 emean 0.355 0.356 0.354 emin 0.341 0.343 0.340 emax 0.369 0.370 0.367 imean 34.993 34.991 34.995 imin 34.718 34.715 34.714 imax 35.409 35.408 35.408 excite_mean 0.675 0.675 0.674 fracstop 1.000 1.000 1.000 cjmean 2.820 2.820 2.820 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 286.1 285.9 286.3 kozaiamp 63.4 63.6 63.5