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: 14YX91 # Created Mon Apr 28 01:10:18 2025 # Orbit generated from Bernstein formalism # Fitting 10 observations of 10 # Arc: 4.13y # First observation: 2014/01/05 # Last observation: 2018/02/22 Preliminary a, adot, b, bdot, g, gdot: 0.000366 0.028758 0.000246 0.014808 0.027821 0.000000 # Chi-squared of fit: 6.88 DOF: 14 RMS: 0.15 # Min/Max residuals: -0.26 0.29 # Exact a, adot, b, bdot, g, gdot: 1.708906E-05 2.936389E-02 9.510789E-06 1.520813E-02 2.780970E-02 4.223618E-03 # Covariance matrix: 5.8015E-13 -5.7396E-13 1.4087E-13 -2.5375E-13 -2.9756E-13 -3.6601E-12 -5.7396E-13 9.2492E-13 -2.9171E-13 5.0896E-13 2.8376E-13 6.9298E-12 1.4087E-13 -2.9171E-13 4.4857E-13 -3.2463E-13 1.2725E-13 -2.5192E-12 -2.5375E-13 5.0896E-13 -3.2463E-13 4.2580E-13 -1.1527E-13 4.3322E-12 -2.9756E-13 2.8376E-13 1.2725E-13 -1.1527E-13 2.0266E-12 1.1792E-12 -3.6601E-12 6.9298E-12 -2.5192E-12 4.3322E-12 1.1792E-12 5.7361E-11 # lat0 lon0 xBary yBary zBary JD0 -59.514228 60.694833 -0.680153 -0.609016 -0.358716 2456662.747558 # Heliocentric elements and errors Epoch: 2456660.5000 = 2014/01/03 Mean Anomaly: 15.54898 +/- 0.018 Argument of Peri: 252.77420 +/- 0.039 Long of Asc Node: 119.74031 +/- 0.001 Inclination: 62.83570 +/- 0.000 Eccentricity: 0.35330035 +/- 0.0003 Semi-Major Axis: 53.70521506 +/- 0.0215 Time of Perihelion: 2450451.4873 +/- 6.0 Perihelion: 34.73114386 +/- 0.0202 Aphelion: 72.67928626 +/- 0.0326 Period (y) 393.5799 +/- 0.24 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 8.68053954 +/- 0.0004 Ecliptic Y 16.86019284 +/- 0.0008 Ecliptic Z -30.98746507 +/- 0.0016 Ecliptic XDOT -0.00179217 +/- 0.0000 Ecliptic YDOT 0.00272167 +/- 0.0000 Ecliptic ZDOT 0.00040139 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 36.32961410 +/- 0.0014 Geocenter to KBO 35.95867630 +/- 0.0018 # Hcoef: 8.24
The following table shows the complete astrometric record for 14YX91. 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 (14YX91) followed by the observatory code and reference code for the source of the astrometry.
2014 01 05.24678 04 46 36.195 -37 55 40.20 24.6g 14YX91 W84 C~52Uq 2014 01 05.24816 04 46 36.178 -37 55 39.69 23.6r 14YX91 W84 C~52Uq 2014 12 23.21984 04 55 04.193 -36 48 50.94 23.6i 14YX91 W84 C~52Uq 2014 12 23.22122 04 55 04.171 -36 48 51.08 24.0g 14YX91 W84 C~52Uq 2014 12 23.22260 04 55 04.162 -36 48 50.75 23.7r 14YX91 W84 C~52Uq 2015 01 21.13880 04 52 14.906 -36 24 06.62 24.7g 14YX91 W84 C~52Uq 2015 01 26.19751 04 51 53.224 -36 18 01.51 24.4g 14YX91 W84 C~52Uq 2015 12 10.32639 05 03 19.466 -35 36 00.52 24.3r 14YX91 W84 C~52Uq 2018 01 22.17390 05 11 29.376 -32 33 13.14 23.8r 14YX91 W84 C~52Uq 2018 02 22.06660 05 09 57.165 -31 53 22.08 24.1r 14YX91 W84 C~52Uq
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 -0.08 0.00 -0.18
2 0.0000 -0.07 -0.07 0.54 0.27
3 0.9636 6887.04 0.16 2313.86 0.09
4 0.9637 6886.75 -0.03 2313.79 -0.05
5 0.9637 6886.73 0.05 2314.14 0.22
6 1.0428 5313.46 -0.26 4286.06 -0.11
7 1.0567 5155.76 0.29 4707.13 -0.18
8 1.9277 13882.50 -0.03 4847.03 -0.14
9 4.0463 23063.48 0.00 13573.13 0.01
10 4.1309 22683.38 -0.04 16235.54 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.
14YX91 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 54.224 54.294 54.155 ecceobj 0.360 0.361 0.359 incobj 62.857 62.857 62.856 qmin 33.912 33.662 33.912 qmax 73.974 74.484 73.923 amean 53.544 53.616 53.476 amin 53.015 53.079 52.949 amax 54.224 54.306 54.183 emean 0.354 0.358 0.353 emin 0.344 0.345 0.343 emax 0.365 0.372 0.364 imean 61.279 61.241 61.281 imin 61.041 60.976 61.044 imax 61.533 61.524 61.521 excite_mean 0.946 0.947 0.945 fracstop 1.000 1.000 1.000 cjmean 1.761 1.761 1.761 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 252.3 252.9 252.4 kozaiamp 1.8 2.2 1.8