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: 14SK404 # Created Thu Apr 25 01:16:18 2024 # Orbit generated from Bernstein formalism # Fitting 18 observations of 18 # Arc: 4.06y # First observation: 2014/09/27 # Last observation: 2018/10/20 Preliminary a, adot, b, bdot, g, gdot: 0.000121 0.033443 -0.000016 -0.003342 0.027623 0.000000 # Chi-squared of fit: 12.47 DOF: 30 RMS: 0.15 # Min/Max residuals: -0.26 0.30 # Exact a, adot, b, bdot, g, gdot: 1.873001E-05 3.371670E-02 -6.527074E-07 -3.355591E-03 2.769720E-02 2.885125E-03 # Covariance matrix: 4.7244E-13 -2.6435E-13 -3.6514E-14 2.3141E-14 1.7735E-13 -1.3900E-12 -2.6435E-13 4.0183E-13 2.3389E-14 -3.8768E-14 2.5483E-14 3.1332E-12 -3.6514E-14 2.3389E-14 2.5544E-13 -9.1774E-14 -3.3148E-14 1.7666E-13 2.3141E-14 -3.8768E-14 -9.1774E-14 5.1405E-14 2.6997E-15 -3.3768E-13 1.7735E-13 2.5483E-14 -3.3148E-14 2.6997E-15 2.6735E-13 4.5305E-13 -1.3900E-12 3.1332E-12 1.7666E-13 -3.3768E-13 4.5305E-13 2.7868E-11 # lat0 lon0 xBary yBary zBary JD0 -26.153321 25.050607 0.364188 -0.412618 -0.840643 2456927.773268 # Heliocentric elements and errors Epoch: 2456920.5000 = 2014/09/20 Mean Anomaly: 5.38216 +/- 0.010 Argument of Peri: 243.32596 +/- 0.028 Long of Asc Node: 128.24837 +/- 0.001 Inclination: 26.17324 +/- 0.000 Eccentricity: 0.41415172 +/- 0.0001 Semi-Major Axis: 62.50099206 +/- 0.0124 Time of Perihelion: 2454222.2431 +/- 5.1 Perihelion: 36.61609842 +/- 0.0107 Aphelion: 88.38588570 +/- 0.0192 Period (y) 494.1270 +/- 0.15 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 30.35958350 +/- 0.0006 Ecliptic Y 13.79077213 +/- 0.0002 Ecliptic Z -15.91410929 +/- 0.0003 Ecliptic XDOT -0.00131637 +/- 0.0000 Ecliptic YDOT 0.00306125 +/- 0.0000 Ecliptic ZDOT -0.00042333 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 36.94791714 +/- 0.0005 Geocenter to KBO 36.10473702 +/- 0.0007 # Hcoef: 7.98
The following table shows the complete astrometric record for 14SK404. 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 (14SK404) followed by the observatory code and reference code for the source of the astrometry.
2014 09 27.27249 02 11 11.705 -14 40 05.40 23.6i 14SK404 W84 C~55SA 2014 11 28.22632 02 06 12.101 -15 02 39.63 24.1g 14SK404 W84 C~55SA 2014 12 13.18199 02 05 17.682 -14 59 38.66 22.7z 14SK404 W84 C~55SA 2014 12 15.17567 02 05 11.754 -14 58 58.96 23.6r 14SK404 W84 C~55SA 2014 12 20.16047 02 04 58.455 -14 57 04.07 23.4i 14SK404 W84 C~55SA 2015 12 14.18278 02 12 52.860 -14 27 42.33 24.0r 14SK404 W84 C~55SA 2015 12 14.18415 02 12 52.871 -14 27 42.18 23.9g 14SK404 W84 C~55SA 2016 08 29.39689 02 27 48.514 -13 12 16.64 23.6i 14SK404 W84 C~55SA 2016 08 29.39827 02 27 48.507 -13 12 16.38 23.8r 14SK404 W84 C~55SA 2016 09 30.25292 02 26 11.610 -13 36 25.84 24.0r 14SK404 W84 C~55SA 2016 09 30.25429 02 26 11.607 -13 36 26.02 23.4i 14SK404 W84 C~55SA 2016 09 30.25566 02 26 11.598 -13 36 25.76 25.0g 14SK404 W84 C~55SA 2017 10 21.30353 02 32 04.854 -13 15 02.78 23.3r 14SK404 W84 C~55SA 2017 10 30.29869 02 31 19.030 -13 19 05.85 23.2i 14SK404 W84 C~55SA 2017 12 14.08551 02 27 52.368 -13 22 00.60 23.4r 14SK404 W84 C~55SA 2017 12 14.08688 02 27 52.398 -13 22 00.81 23.3i 14SK404 W84 C~55SA 2018 10 20.33424 02 39 36.773 -12 39 53.24 23.3i 14SK404 W84 C~55SA 2018 10 20.33561 02 39 36.783 -12 39 53.50 24.3r 14SK404 W84 C~55SA
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 0.11 0.00 -0.26
2 0.1696 -4537.38 -0.13 348.75 -0.17
3 0.2106 -5204.81 0.01 806.47 0.24
4 0.2160 -5270.24 0.04 874.91 0.13
5 0.2297 -5407.61 -0.05 1052.45 -0.07
6 1.2126 1639.83 -0.11 141.04 0.04
7 1.2126 1640.04 0.15 141.11 0.07
8 1.9223 15453.28 -0.05 -654.38 -0.19
9 1.9223 15453.28 0.02 -654.10 0.14
10 2.0095 13578.69 0.02 -1443.13 0.04
11 2.0095 13578.58 0.01 -1443.28 -0.09
12 2.0095 13578.56 0.09 -1442.99 0.22
13 3.0665 18857.91 -0.26 -2276.59 0.17
14 3.0911 18141.44 -0.16 -2237.09 -0.18
15 3.2137 15277.23 -0.08 -1215.82 0.21
16 3.2137 15277.56 0.30 -1216.19 -0.20
17 4.0631 25841.88 -0.02 -2966.12 0.10
18 4.0631 25841.92 0.12 -2966.42 -0.20
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.
14SK404 quality flag:3 Type: 3:1EE 3:1EE 3:1EE Type: 3:1II axisobj 63.441 63.484 63.399 ecceobj 0.423 0.423 0.423 incobj 26.156 26.156 26.156 qmin 36.079 36.078 36.078 qmax 90.351 90.369 90.330 amean 62.630 62.630 62.629 amin 61.907 61.874 61.929 amax 63.653 63.640 63.686 emean 0.370 0.374 0.333 emin 0.336 0.340 0.237 emax 0.423 0.423 0.423 imean 27.161 26.956 28.554 imin 24.584 24.588 24.580 imax 28.456 28.305 31.660 excite_mean 0.588 0.588 0.585 fracstop 1.000 1.000 1.000 cjmean 2.864 2.864 2.864 libcent 0 75.4 74.7 68.5 libamp 0 30.4 29.6 47.7 libcent 1 -180.0 -180.0 168.2 libamp 1 -180.0 -180.0 59.0 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 194.3 189.7 222.4 kozaiamp 54.2 60.0 16.2