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: 14SD404 # Created Tue Apr 23 01:16:15 2024 # Orbit generated from Bernstein formalism # Fitting 17 observations of 17 # Arc: 4.12y # First observation: 2014/09/25 # Last observation: 2018/11/07 Preliminary a, adot, b, bdot, g, gdot: 0.000109 0.040477 -0.000007 0.006311 0.034058 0.000000 # Chi-squared of fit: 13.08 DOF: 28 RMS: 0.16 # Min/Max residuals: -0.40 0.33 # Exact a, adot, b, bdot, g, gdot: 1.975026E-05 4.084325E-02 4.968434E-06 6.434377E-03 3.383255E-02 5.106665E-03 # Covariance matrix: 2.5041E-13 -1.0118E-13 1.4643E-15 -8.9019E-15 7.3121E-14 -3.4990E-13 -1.0118E-13 5.2067E-13 -2.1955E-14 7.6797E-14 4.1488E-13 3.4331E-12 1.4643E-15 -2.1955E-14 2.1560E-13 -7.4351E-14 -1.8698E-14 -1.5698E-13 -8.9019E-15 7.6797E-14 -7.4351E-14 5.2284E-14 5.4331E-14 5.6397E-13 7.3121E-14 4.1488E-13 -1.8698E-14 5.4331E-14 6.4858E-13 2.5696E-12 -3.4990E-13 3.4331E-12 -1.5698E-13 5.6397E-13 2.5696E-12 2.5023E-11 # lat0 lon0 xBary yBary zBary JD0 -21.992302 30.010907 0.474513 -0.331778 -0.821919 2456925.779388 # Heliocentric elements and errors Epoch: 2456920.5000 = 2014/09/20 Mean Anomaly: 26.57053 +/- 0.020 Argument of Peri: 251.31658 +/- 0.034 Long of Asc Node: 96.80007 +/- 0.001 Inclination: 22.91216 +/- 0.000 Eccentricity: 0.19620309 +/- 0.0001 Semi-Major Axis: 36.39505465 +/- 0.0032 Time of Perihelion: 2451001.3452 +/- 4.4 Perihelion: 29.25423233 +/- 0.0043 Aphelion: 43.53587696 +/- 0.0051 Period (y) 219.5694 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 24.73436783 +/- 0.0006 Ecliptic Y 13.74210038 +/- 0.0003 Ecliptic Z -11.06858387 +/- 0.0003 Ecliptic XDOT -0.00115713 +/- 0.0000 Ecliptic YDOT 0.00314665 +/- 0.0000 Ecliptic ZDOT 0.00032816 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 30.38334781 +/- 0.0005 Geocenter to KBO 29.55733082 +/- 0.0007 # Hcoef: 8.59
The following table shows the complete astrometric record for 14SD404. 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 (14SD404) followed by the observatory code and reference code for the source of the astrometry.
2014 09 25.27861 02 22 19.772 -09 09 17.50 24.1g 14SD404 W84 C~55S9 2014 09 25.28135 02 22 19.761 -09 09 17.25 23.4r 14SD404 W84 C~55S9 2014 09 30.26596 02 21 54.436 -09 12 56.95 23.4r 14SD404 W84 C~55S9 2014 10 02.35943 02 21 43.253 -09 14 26.67 23.7r 14SD404 W84 C~55S9 2014 10 03.37378 02 21 37.756 -09 15 09.54 23.1i 14SD404 W84 C~55S9 2014 11 21.24367 02 16 39.533 -09 35 51.28 23.4r 14SD404 W84 C~55S9 2015 11 22.12136 02 24 56.070 -08 26 46.60 22.8z 14SD404 W84 C~55S9 2016 09 23.26942 02 38 53.579 -06 49 12.71 22.9i 14SD404 W84 C~55S9 2016 10 22.20749 02 36 16.515 -07 07 45.70 22.9i 14SD404 W84 C~55S9 2016 12 31.09632 02 30 11.717 -07 09 01.78 23.6r 14SD404 W84 C~55S9 2016 12 31.09770 02 30 11.678 -07 09 01.81 24.2g 14SD404 W84 C~55S9 2017 09 25.32019 02 46 47.320 -05 41 21.30 22.8i 14SD404 W84 C~55S9 2017 10 17.29434 02 44 52.847 -05 55 31.67 23.6r 14SD404 W84 C~55S9 2017 12 15.07719 02 39 09.375 -06 07 17.59 23.4r 14SD404 W84 C~55S9 2017 12 15.07857 02 39 09.385 -06 07 17.64 23.7g 14SD404 W84 C~55S9 2018 11 07.24613 02 50 43.798 -04 56 02.60 24.1r 14SD404 W84 C~55S9 2018 11 07.24752 02 50 43.773 -04 56 02.68 23.5i 14SD404 W84 C~55S9
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 -0.14 0.00 -0.40
2 0.0000 -0.07 0.03 0.29 -0.07
3 0.0137 -428.15 -0.00 -74.83 0.15
4 0.0194 -614.61 -0.13 -101.21 0.16
5 0.0222 -705.83 0.10 -113.04 0.01
6 0.1560 -5276.70 0.07 252.68 0.30
7 1.1577 3062.93 0.09 1579.73 -0.18
8 1.9959 16818.33 0.33 2644.06 -0.03
9 2.0751 14221.49 -0.19 2439.20 0.10
10 2.2664 9102.57 0.20 4297.89 -0.07
11 2.2664 9102.02 -0.32 4298.07 0.05
12 3.0008 24959.93 -0.15 3912.11 -0.08
13 3.0610 23033.54 0.05 3733.27 0.03
14 3.2219 17948.87 -0.08 4917.69 0.02
15 3.2219 17948.99 0.12 4917.59 -0.13
16 4.1176 29314.17 0.13 5183.38 0.05
17 4.1176 29313.78 -0.12 5183.44 0.09
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.
14SD404 quality flag:3 Type: 4:3E 4:3E 4:3E Type: 8:6II 8:6II 8:6II axisobj 36.714 36.725 36.703 ecceobj 0.204 0.204 0.203 incobj 22.924 22.924 22.924 qmin 28.107 28.106 28.123 qmax 45.149 45.176 45.145 amean 36.474 36.474 36.475 amin 36.125 36.144 36.131 amax 36.868 36.855 36.867 emean 0.198 0.198 0.198 emin 0.166 0.167 0.168 emax 0.226 0.226 0.226 imean 21.207 21.202 21.198 imin 20.150 20.146 20.156 imax 22.247 22.244 22.231 excite_mean 0.412 0.413 0.412 fracstop 1.000 1.000 1.000 cjmean 2.837 2.837 2.837 libcent 0 179.0 180.3 180.3 libamp 0 55.5 50.7 50.6 libcent 1 177.3 178.4 176.2 libamp 1 128.7 123.4 126.5 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 269.7 269.7 269.7 kozaiamp 21.7 21.8 21.5