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: 14XU54 # Created Mon Apr 28 01:10:17 2025 # Orbit generated from Bernstein formalism # Fitting 17 observations of 17 # Arc: 3.85y # First observation: 2014/12/15 # Last observation: 2018/10/20 Preliminary a, adot, b, bdot, g, gdot: -0.000197 0.027740 -0.000302 0.007444 0.027411 0.000000 # Chi-squared of fit: 7.35 DOF: 28 RMS: 0.12 # Min/Max residuals: -0.22 0.33 # Exact a, adot, b, bdot, g, gdot: 1.739474E-05 2.697689E-02 4.633741E-06 7.088197E-03 2.507875E-02 -8.484823E-03 # Covariance matrix: 2.8883E-13 -2.0333E-13 1.1550E-14 -2.6613E-14 -2.5577E-14 -1.0791E-12 -2.0333E-13 3.5427E-13 -4.0989E-14 8.0426E-14 1.8267E-13 3.0216E-12 1.1550E-14 -4.0989E-14 2.5746E-13 -1.0641E-13 -1.2545E-13 -5.6267E-13 -2.6613E-14 8.0426E-14 -1.0641E-13 7.7011E-14 1.4700E-13 9.4750E-13 -2.5577E-14 1.8267E-13 -1.2545E-13 1.4700E-13 1.2092E-12 3.5338E-12 -1.0791E-12 3.0216E-12 -5.6267E-13 9.4750E-13 3.5338E-12 3.2458E-11 # lat0 lon0 xBary yBary zBary JD0 -28.503929 28.738846 -0.795870 -0.275760 -0.508225 2457006.694618 # Heliocentric elements and errors Epoch: 2457000.5000 = 2014/12/09 Mean Anomaly: 340.96499 +/- 0.014 Argument of Peri: 348.78335 +/- 0.020 Long of Asc Node: 89.84938 +/- 0.001 Inclination: 31.70926 +/- 0.000 Eccentricity: 0.45727386 +/- 0.0003 Semi-Major Axis: 65.29491629 +/- 0.0308 Time of Perihelion: 2467190.3588 +/- 2.5 Perihelion: 35.43725780 +/- 0.0251 Aphelion: 95.15257478 +/- 0.0486 Period (y) 527.6273 +/- 0.37 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 30.84595701 +/- 0.0013 Ecliptic Y 17.82579110 +/- 0.0007 Ecliptic Z -19.02872404 +/- 0.0008 Ecliptic XDOT -0.00181007 +/- 0.0000 Ecliptic YDOT 0.00236333 +/- 0.0000 Ecliptic ZDOT 0.00112216 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 40.38965500 +/- 0.0011 Geocenter to KBO 39.87439698 +/- 0.0017 # Hcoef: 7.50
The following table shows the complete astrometric record for 14XU54. 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 (14XU54) followed by the observatory code and reference code for the source of the astrometry.
2014 12 15.19384 02 27 24.131 -15 39 01.01 23.6i 14XU54 W84 C~55TN 2014 12 16.17957 02 27 20.849 -15 38 37.97 23.8r 14XU54 W84 C~55TN 2014 12 24.16741 02 26 56.850 -15 35 00.96 23.7r 14XU54 W84 C~55TN 2015 01 09.04755 02 26 25.680 -15 25 21.00 23.4i 14XU54 W84 C~55TN 2015 01 28.05640 02 26 20.461 -15 10 15.43 22.3z 14XU54 W84 C~55TN 2015 12 01.21472 02 33 43.896 -14 45 48.49 23.6i 14XU54 W84 C~55TN 2016 11 19.16214 02 40 04.074 -13 47 48.81 23.2i 14XU54 W84 C~55TN 2016 11 25.14540 02 39 35.249 -13 47 44.63 23.7r 14XU54 W84 C~55TN 2016 12 02.12613 02 39 03.428 -13 46 59.40 23.4r 14XU54 W84 C~55TN 2016 12 02.12749 02 39 03.410 -13 46 59.47 23.4i 14XU54 W84 C~55TN 2016 12 02.12886 02 39 03.425 -13 46 59.16 24.0g 14XU54 W84 C~55TN 2017 10 30.30701 02 47 16.587 -12 43 53.70 23.4i 14XU54 W84 C~55TN 2017 10 30.30839 02 47 16.565 -12 43 53.66 23.4r 14XU54 W84 C~55TN 2018 01 16.10243 02 42 22.955 -12 26 43.81 23.9r 14XU54 W84 C~55TN 2018 01 16.10379 02 42 22.950 -12 26 43.62 23.1i 14XU54 W84 C~55TN 2018 10 19.30807 02 53 45.783 -11 37 42.86 23.4r 14XU54 W84 C~55TN 2018 10 20.34249 02 53 40.813 -11 38 10.22 23.0i 14XU54 W84 C~55TN
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 -0.03
2 0.0027 -35.84 0.21 38.65 -0.13
3 0.0246 -280.50 -0.07 366.42 -0.02
4 0.0680 -490.97 -0.06 1070.03 0.18
5 0.1201 -234.38 0.02 1941.81 0.06
6 0.9610 6285.59 -0.11 962.02 -0.06
7 1.9301 12724.54 -0.02 2137.64 -0.22
8 1.9465 12335.45 -0.15 2299.18 -0.00
9 1.9656 11921.19 0.13 2514.98 0.04
10 1.9656 11920.91 -0.07 2515.01 0.03
11 1.9656 11921.23 0.33 2515.22 0.19
12 2.8751 20069.16 0.00 3303.91 -0.08
13 2.8751 20068.88 -0.18 3304.07 0.06
14 3.0880 16456.27 -0.01 5895.83 -0.10
15 3.0880 16456.27 -0.01 5896.03 0.05
16 3.8443 26955.91 0.00 4791.59 0.14
17 3.8471 26876.65 0.06 4794.56 -0.10
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.
14XU54 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 66.168 66.250 66.086 ecceobj 0.462 0.462 0.461 incobj 31.715 31.715 31.715 qmin 34.906 34.954 34.441 qmax 97.406 97.324 97.896 amean 65.382 65.382 65.382 amin 64.584 64.627 64.565 amax 66.541 66.481 66.532 emean 0.452 0.444 0.459 emin 0.439 0.422 0.448 emax 0.466 0.466 0.472 imean 30.433 30.890 30.067 imin 29.959 29.953 29.710 imax 30.858 31.718 30.403 excite_mean 0.679 0.679 0.679 fracstop 1.000 1.000 1.000 cjmean 2.727 2.727 2.727 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 111.5 97.1 132.9 kozaiamp 180.0 180.0 180.0