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: 14SB404 # Created Fri Nov 22 02:10:03 2024 # Orbit generated from Bernstein formalism # Fitting 11 observations of 11 # Arc: 4.18y # First observation: 2014/09/25 # Last observation: 2018/11/29 Preliminary a, adot, b, bdot, g, gdot: 0.000060 0.029394 -0.000006 -0.002888 0.027842 0.000000 # Chi-squared of fit: 5.10 DOF: 16 RMS: 0.12 # Min/Max residuals: -0.23 0.19 # Exact a, adot, b, bdot, g, gdot: 1.619327E-05 2.957238E-02 -2.051637E-06 -2.896894E-03 2.784400E-02 2.802795E-03 # Covariance matrix: 3.4061E-13 -1.0314E-13 -4.5141E-15 3.5481E-15 1.5828E-13 -5.0431E-13 -1.0314E-13 6.8563E-13 1.0962E-14 -6.7981E-14 4.6940E-13 6.9296E-12 -4.5141E-15 1.0962E-14 2.8264E-13 -9.6377E-14 -4.0679E-15 1.5263E-13 3.5481E-15 -6.7981E-14 -9.6377E-14 6.8760E-14 -4.3615E-14 -7.7331E-13 1.5828E-13 4.6940E-13 -4.0679E-15 -4.3615E-14 8.1588E-13 4.0442E-12 -5.0431E-13 6.9296E-12 1.5263E-13 -7.7331E-13 4.0442E-12 7.9839E-11 # lat0 lon0 xBary yBary zBary JD0 -21.575354 29.800307 0.471273 -0.326423 -0.825918 2456925.778048 # Heliocentric elements and errors Epoch: 2456920.5000 = 2014/09/20 Mean Anomaly: 44.53122 +/- 0.072 Argument of Peri: 201.21689 +/- 0.104 Long of Asc Node: 135.22152 +/- 0.001 Inclination: 21.85598 +/- 0.000 Eccentricity: 0.10364539 +/- 0.0003 Semi-Major Axis: 39.42198118 +/- 0.0049 Time of Perihelion: 2445737.2448 +/- 18.0 Perihelion: 35.33607445 +/- 0.0114 Aphelion: 43.50788791 +/- 0.0119 Period (y) 247.5232 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 29.98369752 +/- 0.0009 Ecliptic Y 16.63234237 +/- 0.0005 Ecliptic Z -13.20670094 +/- 0.0004 Ecliptic XDOT -0.00131826 +/- 0.0000 Ecliptic YDOT 0.00259400 +/- 0.0000 Ecliptic ZDOT -0.00036612 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 36.74335150 +/- 0.0008 Geocenter to KBO 35.91438416 +/- 0.0012 # Hcoef: 7.89
The following table shows the complete astrometric record for 14SB404. 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 (14SB404) followed by the observatory code and reference code for the source of the astrometry.
2014 09 25.27727 02 20 59.874 -08 49 56.70 22.8r 14SB404 W84 C~55S9 2014 09 30.26596 02 20 38.770 -08 53 22.17 24.1r 14SB404 W84 C~55S9 2014 10 02.35943 02 20 29.487 -08 54 46.08 23.4r 14SB404 W84 C~55S9 2014 10 03.37378 02 20 24.889 -08 55 26.38 23.8i 14SB404 W84 C~55S9 2014 12 16.16554 02 14 37.283 -09 15 47.38 24.1g 14SB404 W84 C~55S9 2016 09 24.29259 02 34 14.181 -07 56 55.47 24.0r 14SB404 W84 C~55S9 2016 12 06.07419 02 28 23.052 -08 25 21.89 22.4z 14SB404 W84 C~55S9 2016 12 31.09494 02 27 04.415 -08 19 47.36 23.5r 14SB404 W84 C~55S9 2017 10 21.22994 02 38 45.566 -07 46 48.00 24.2g 14SB404 W84 C~55S9 2017 11 25.14341 02 35 45.579 -07 58 33.97 23.7r 14SB404 W84 C~55S9 2018 11 29.21652 02 41 57.347 -07 32 12.04 23.4r 14SB404 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 0.12 0.00 0.08
2 0.0137 -364.84 -0.07 -83.31 -0.07
3 0.0194 -523.05 0.09 -113.92 -0.04
4 0.0222 -600.96 -0.15 -127.91 -0.07
5 0.2242 -5854.81 0.03 514.19 0.02
6 1.9987 12164.87 -0.12 -1190.11 0.14
7 2.1979 6673.69 -0.23 -930.56 0.04
8 2.2664 5699.36 0.19 -204.80 0.13
9 3.0717 16166.36 0.19 -2071.92 -0.14
10 3.1673 13402.48 0.06 -1769.13 -0.16
11 4.1778 19163.59 -0.11 -2285.29 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.
14SB404 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.748 39.764 39.732 ecceobj 0.111 0.111 0.110 incobj 21.834 21.834 21.833 qmin 34.424 34.376 34.409 qmax 44.833 44.845 44.851 amean 39.459 39.458 39.458 amin 39.103 39.097 39.104 amax 39.849 39.857 39.846 emean 0.095 0.095 0.095 emin 0.066 0.068 0.066 emax 0.126 0.127 0.128 imean 20.673 20.669 20.666 imin 20.125 20.124 20.122 imax 21.221 21.244 21.218 excite_mean 0.366 0.366 0.366 fracstop 1.000 1.000 1.000 cjmean 2.896 2.896 2.896 libcent 0 180.1 179.9 180.1 libamp 0 75.5 78.6 75.3 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 177.2 179.2 178.5 kozaiamp 180.0 180.0 180.0