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: 14SA404 # Created Sun Nov 24 02:10:00 2024 # Orbit generated from Bernstein formalism # Fitting 12 observations of 12 # Arc: 4.18y # First observation: 2014/09/25 # Last observation: 2018/11/29 Preliminary a, adot, b, bdot, g, gdot: 0.000050 0.027563 -0.000003 -0.000874 0.025913 0.000000 # Chi-squared of fit: 3.62 DOF: 18 RMS: 0.10 # Min/Max residuals: -0.18 0.25 # Exact a, adot, b, bdot, g, gdot: 1.709791E-05 2.797565E-02 3.535600E-07 -8.722663E-04 2.603795E-02 5.135471E-03 # Covariance matrix: 2.2604E-13 -8.8436E-14 -9.0259E-16 -1.2632E-15 8.6465E-14 -6.1149E-13 -8.8436E-14 6.7767E-13 1.7441E-15 -1.8323E-14 4.1775E-13 7.4653E-12 -9.0259E-16 1.7441E-15 2.0293E-13 -6.8805E-14 -2.5713E-15 3.5167E-14 -1.2632E-15 -1.8323E-14 -6.8805E-14 6.0845E-14 -2.0565E-14 -1.9084E-13 8.6465E-14 4.1775E-13 -2.5713E-15 -2.0565E-14 7.2420E-13 3.3926E-12 -6.1149E-13 7.4653E-12 3.5167E-14 -1.9084E-13 3.3926E-12 9.6473E-11 # lat0 lon0 xBary yBary zBary JD0 -20.938854 30.278197 0.478685 -0.315809 -0.825783 2456925.776658 # Heliocentric elements and errors Epoch: 2456920.5000 = 2014/09/20 Mean Anomaly: 32.09564 +/- 0.025 Argument of Peri: 212.25623 +/- 0.055 Long of Asc Node: 125.71223 +/- 0.001 Inclination: 20.58611 +/- 0.000 Eccentricity: 0.24693271 +/- 0.0003 Semi-Major Axis: 48.13937399 +/- 0.0112 Time of Perihelion: 2446043.9121 +/- 7.7 Perihelion: 36.25218806 +/- 0.0184 Aphelion: 60.02655993 +/- 0.0215 Period (y) 334.0095 +/- 0.12 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 31.97837263 +/- 0.0010 Ecliptic Y 18.11954375 +/- 0.0006 Ecliptic Z -13.72504148 +/- 0.0004 Ecliptic XDOT -0.00108057 +/- 0.0000 Ecliptic YDOT 0.00277349 +/- 0.0000 Ecliptic ZDOT -0.00027852 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.23405339 +/- 0.0009 Geocenter to KBO 38.40548617 +/- 0.0013 # Hcoef: 7.96
The following table shows the complete astrometric record for 14SA404. 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 (14SA404) followed by the observatory code and reference code for the source of the astrometry.
2014 09 25.27588 02 21 47.413 -08 04 50.46 23.4i 14SA404 W84 C~55S9 2014 09 25.27727 02 21 47.401 -08 04 50.26 24.4r 14SA404 W84 C~55S9 2014 09 25.27861 02 21 47.400 -08 04 50.29 24.3g 14SA404 W84 C~55S9 2014 09 30.26596 02 21 27.706 -08 07 55.18 23.7r 14SA404 W84 C~55S9 2014 10 03.36677 02 21 14.786 -08 09 46.88 23.7r 14SA404 W84 C~55S9 2014 10 03.37378 02 21 14.747 -08 09 46.86 23.4i 14SA404 W84 C~55S9 2014 12 12.17803 02 16 01.466 -08 28 45.35 23.5i 14SA404 W84 C~55S9 2016 09 11.27079 02 34 36.938 -06 55 26.96 23.5i 14SA404 W84 C~55S9 2016 10 27.19138 02 31 32.655 -07 21 12.60 23.9r 14SA404 W84 C~55S9 2016 12 31.09494 02 27 15.749 -07 23 58.39 23.8r 14SA404 W84 C~55S9 2017 12 23.15460 02 33 30.179 -06 56 32.15 24.6r 14SA404 W84 C~55S9 2018 11 29.21652 02 40 51.099 -06 28 30.56 24.1r 14SA404 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 -0.02 0.00 -0.18
2 0.0000 -0.10 -0.03 0.25 0.09
3 0.0000 -0.12 0.04 0.23 0.09
4 0.0137 -338.56 -0.02 -71.74 -0.05
5 0.0222 -557.23 0.08 -110.00 -0.16
6 0.0222 -557.76 0.05 -109.78 0.14
7 0.2133 -5315.92 -0.07 426.47 0.01
8 1.9630 12191.34 -0.06 -111.49 0.08
9 2.0887 9071.15 -0.07 -589.69 -0.15
10 2.2664 5430.00 0.07 597.81 0.25
11 3.2440 11235.35 0.05 179.41 -0.03
12 4.1778 18007.42 -0.01 -582.89 -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.
14SA404 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 48.667 48.703 48.631 ecceobj 0.255 0.256 0.254 incobj 20.578 20.578 20.578 qmin 34.472 34.578 34.810 qmax 62.272 62.588 61.984 amean 47.796 48.200 47.792 amin 46.992 47.534 47.020 amax 48.696 48.797 48.698 emean 0.245 0.256 0.232 emin 0.211 0.231 0.196 emax 0.280 0.284 0.273 imean 19.012 19.018 19.287 imin 17.974 18.089 18.021 imax 19.905 20.109 20.199 excite_mean 0.408 0.414 0.404 fracstop 1.000 1.000 1.000 cjmean 2.939 2.937 2.943 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 182.3 179.7 182.5 kozaiamp 179.9 179.9 180.0