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: 14ST403 # Created Sun Dec 22 02:10:04 2024 # Orbit generated from Bernstein formalism # Fitting 8 observations of 8 # Arc: 4.13y # First observation: 2014/09/24 # Last observation: 2018/11/09 Preliminary a, adot, b, bdot, g, gdot: 0.000207 0.025188 -0.000035 -0.006887 0.026261 0.000000 # Chi-squared of fit: 7.34 DOF: 10 RMS: 0.17 # Min/Max residuals: -0.25 0.24 # Exact a, adot, b, bdot, g, gdot: 1.580992E-05 2.536932E-02 -4.185662E-06 -6.833540E-03 2.487028E-02 -1.115079E-03 # Covariance matrix: 5.2678E-13 -4.5561E-13 -4.1050E-15 3.4326E-14 5.3035E-13 -3.5748E-12 -4.5561E-13 1.1948E-12 1.7143E-14 -1.3502E-13 -1.5545E-12 1.2263E-11 -4.1050E-15 1.7143E-14 4.3309E-13 -1.3739E-13 7.2879E-14 1.5296E-13 3.4326E-14 -1.3502E-13 -1.3739E-13 1.1534E-13 -3.4818E-13 -1.2833E-12 5.3035E-13 -1.5545E-12 7.2879E-14 -3.4818E-13 1.1285E-11 -2.0098E-11 -3.5748E-12 1.2263E-11 1.5296E-13 -1.2833E-12 -2.0098E-11 1.3456E-10 # lat0 lon0 xBary yBary zBary JD0 -26.930134 -56.923103 -0.848969 -0.244095 -0.480816 2456924.561118 # Heliocentric elements and errors Epoch: 2456920.5000 = 2014/09/20 Mean Anomaly: 352.34863 +/- 0.155 Argument of Peri: 253.88195 +/- 0.211 Long of Asc Node: 64.38995 +/- 0.001 Inclination: 30.01250 +/- 0.000 Eccentricity: 0.14932606 +/- 0.0004 Semi-Major Axis: 47.73806859 +/- 0.0333 Time of Perihelion: 2459481.0453 +/- 51.6 Perihelion: 40.60953085 +/- 0.0352 Aphelion: 54.86660633 +/- 0.0436 Period (y) 329.8416 +/- 0.35 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 20.56851785 +/- 0.0026 Ecliptic Y -30.02550856 +/- 0.0041 Ecliptic Z -18.21080057 +/- 0.0025 Ecliptic XDOT 0.00208985 +/- 0.0000 Ecliptic YDOT 0.00189682 +/- 0.0000 Ecliptic ZDOT -0.00061499 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 40.69678548 +/- 0.0035 Geocenter to KBO 40.20863717 +/- 0.0054 # Hcoef: 7.60
The following table shows the complete astrometric record for 14ST403. 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 (14ST403) followed by the observatory code and reference code for the source of the astrometry.
2014 09 24.06034 20 55 40.920 -45 27 17.87 24.2r 14ST403 W84 C~55S8 2014 09 27.04258 20 55 30.274 -45 26 18.25 23.5r 14ST403 W84 C~55S8 2014 10 13.03244 20 54 50.901 -45 19 14.52 23.8r 14ST403 W84 C~55S8 2016 09 09.09336 21 13 55.216 -45 15 45.45 23.5i 14ST403 W84 C~55S8 2016 09 23.01557 21 12 48.094 -45 13 21.61 24.3g 14ST403 W84 C~55S8 2017 10 13.06409 21 20 12.337 -44 55 15.99 23.3i 14ST403 W84 C~55S8 2018 11 06.10973 21 28 13.680 -44 28 05.80 24.4r 14ST403 W84 C~55S8 2018 11 09.09384 21 28 16.083 -44 25 55.07 23.3g 14ST403 W84 C~55S8
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 0.07 0.00 -0.03
2 0.0082 -88.11 0.22 91.34 -0.14
3 0.0519 -352.28 -0.23 622.24 0.22
4 1.9604 11105.00 -0.25 -3229.84 0.11
5 1.9985 10494.00 0.03 -2838.80 -0.08
6 3.0527 15287.22 0.24 -3576.37 -0.24
7 4.1179 20690.23 0.15 -4095.46 0.05
8 4.1260 20767.17 -0.22 -3985.69 0.12
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.
14ST403 quality flag:2 Type: SCATEXTD SCATEXTD SCATNEAR axisobj 47.946 48.048 47.845 ecceobj 0.154 0.155 0.153 incobj 30.060 30.060 30.060 qmin 39.990 40.047 38.572 qmax 56.466 56.598 57.671 amean 48.044 48.134 47.777 amin 47.611 47.722 47.206 amax 48.525 48.594 48.447 emean 0.142 0.144 0.142 emin 0.120 0.126 0.098 emax 0.165 0.165 0.192 imean 28.962 28.963 28.918 imin 28.664 28.680 28.246 imax 29.191 29.316 29.370 excite_mean 0.505 0.505 0.504 fracstop 1.000 1.000 1.000 cjmean 2.814 2.815 2.813 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 187.8 179.5 179.9 kozaiamp 179.9 180.0 180.0