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: 14YA92 # Created Sun Dec 22 02:10:14 2024 # Orbit generated from Bernstein formalism # Fitting 13 observations of 13 # Arc: 2.99y # First observation: 2014/12/16 # Last observation: 2017/12/14 Preliminary a, adot, b, bdot, g, gdot: 0.000011 0.024287 -0.000097 0.009203 0.026305 0.000000 # Chi-squared of fit: 5.08 DOF: 20 RMS: 0.11 # Min/Max residuals: -0.34 0.17 # Exact a, adot, b, bdot, g, gdot: 1.464311E-05 2.410435E-02 5.065132E-06 9.072427E-03 2.585089E-02 -1.196041E-03 # Covariance matrix: 3.7525E-13 -3.8599E-13 3.6354E-14 -8.7571E-14 -9.7326E-14 -3.3672E-12 -3.8599E-13 1.4829E-12 -1.6357E-13 4.4006E-13 1.7215E-13 1.8101E-11 3.6354E-14 -1.6357E-13 3.4575E-13 -1.9920E-13 -6.7256E-14 -2.2496E-12 -8.7571E-14 4.4006E-13 -1.9920E-13 2.4278E-13 1.1629E-13 5.8908E-12 -9.7326E-14 1.7215E-13 -6.7256E-14 1.1629E-13 4.4385E-13 3.2998E-12 -3.3672E-12 1.8101E-11 -2.2496E-12 5.8908E-12 3.2998E-12 2.3860E-10 # lat0 lon0 xBary yBary zBary JD0 -27.973644 27.859864 -0.814319 -0.258602 -0.487330 2457007.680348 # Heliocentric elements and errors Epoch: 2457000.5000 = 2014/12/09 Mean Anomaly: 241.93788 +/- 0.521 Argument of Peri: 65.77200 +/- 0.519 Long of Asc Node: 79.23716 +/- 0.001 Inclination: 34.28867 +/- 0.000 Eccentricity: 0.03055388 +/- 0.0005 Semi-Major Axis: 38.59655401 +/- 0.0040 Time of Perihelion: 2485723.4683 +/- 126.8 Perihelion: 37.41727945 +/- 0.0209 Aphelion: 39.77582856 +/- 0.0209 Period (y) 239.7900 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 30.30819661 +/- 0.0008 Ecliptic Y 16.94431544 +/- 0.0004 Ecliptic Z -18.14493336 +/- 0.0005 Ecliptic XDOT -0.00089750 +/- 0.0000 Ecliptic YDOT 0.00241018 +/- 0.0000 Ecliptic ZDOT 0.00090811 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.17824925 +/- 0.0007 Geocenter to KBO 38.68339454 +/- 0.0010 # Hcoef: 7.87
The following table shows the complete astrometric record for 14YA92. 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 (14YA92) followed by the observatory code and reference code for the source of the astrometry.
2014 12 16.17957 02 23 36.404 -15 26 16.01 23.9r 14YA92 W84 C~55TQ 2014 12 20.17285 02 23 23.075 -15 24 30.25 23.9r 14YA92 W84 C~55TQ 2015 01 14.09508 02 22 32.581 -15 08 44.73 23.8r 14YA92 W84 C~55TQ 2015 01 28.05640 02 22 31.510 -14 57 00.41 23.6z 14YA92 W84 C~55TQ 2015 12 14.18137 02 28 16.182 -14 27 43.65 23.9g 14YA92 W84 C~55TQ 2016 09 23.32842 02 39 17.727 -13 10 10.09 23.4r 14YA92 W84 C~55TQ 2016 09 25.25649 02 39 10.267 -13 11 22.23 24.7g 14YA92 W84 C~55TQ 2016 10 06.22167 02 38 23.21 -13 17 47.5 14YA92 W84 C~5iqY 2016 10 06.35279 02 38 22.59 -13 17 51.7 24.3V 14YA92 W84 C~5iqY 2016 11 27.11581 02 33 56.746 -13 31 19.91 23.6r 14YA92 W84 C~55TQ 2017 10 30.30422 02 40 51.671 -12 27 08.21 24.4g 14YA92 W84 C~55TQ 2017 12 14.08963 02 37 11.608 -12 27 24.93 23.8r 14YA92 W84 C~55TQ 2017 12 14.09100 02 37 11.614 -12 27 25.34 24.2g 14YA92 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 0.02 0.00 0.10
2 0.0109 -140.89 -0.01 168.77 0.07
3 0.0792 -477.07 -0.16 1315.45 -0.13
4 0.1174 -235.36 0.13 1977.22 -0.14
5 0.9938 5062.40 0.05 1777.98 0.09
6 1.7718 15770.63 -0.03 2479.86 0.10
7 1.7771 15641.66 0.07 2454.47 -0.06
8 1.8071 14855.34 0.03 2358.63 -0.05
9 1.8075 14845.32 0.00 2358.18 0.07
10 1.9492 10932.92 -0.13 3074.04 -0.03
11 2.8723 18041.75 0.06 4351.52 0.17
12 2.9950 15034.82 -0.01 5562.28 0.13
13 2.9950 15034.75 -0.02 5561.87 -0.34
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.
14YA92 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 38.903 38.916 38.890 ecceobj 0.024 0.024 0.025 incobj 34.284 34.284 34.284 qmin 37.073 37.155 37.064 qmax 40.424 40.346 40.389 amean 38.671 38.686 38.653 amin 38.391 38.411 38.370 amax 38.965 38.970 38.945 emean 0.027 0.026 0.026 emin 0.018 0.017 0.014 emax 0.038 0.036 0.037 imean 32.760 32.761 32.762 imin 32.418 32.418 32.413 imax 33.136 33.138 33.139 excite_mean 0.542 0.542 0.542 fracstop 1.000 1.000 1.000 cjmean 2.684 2.685 2.684 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 177.0 173.7 180.5 kozaiamp 180.0 179.9 180.0