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: 14SD403 # Created Fri Apr 26 01:16:20 2024 # Orbit generated from Bernstein formalism # Fitting 8 observations of 8 # Arc: 4.11y # First observation: 2013/09/05 # Last observation: 2017/10/17 Preliminary a, adot, b, bdot, g, gdot: -0.000115 0.035528 -0.000233 0.005174 0.029588 0.000000 # Chi-squared of fit: 1.84 DOF: 10 RMS: 0.08 # Min/Max residuals: -0.13 0.13 # Exact a, adot, b, bdot, g, gdot: 2.051401E-05 3.493466E-02 2.746047E-06 5.166616E-03 2.701575E-02 -4.808852E-03 # Covariance matrix: 1.4210E-12 -1.6992E-12 1.7013E-13 -2.7690E-13 -3.5623E-13 -9.6158E-12 -1.6992E-12 4.3731E-12 -8.2194E-13 5.3612E-13 7.1841E-12 2.5009E-11 1.7013E-13 -8.2194E-13 7.8012E-13 -2.2575E-13 -2.2879E-12 -4.4911E-12 -2.7690E-13 5.3612E-13 -2.2575E-13 1.5558E-13 2.6180E-13 3.3048E-12 -3.5623E-13 7.1841E-12 -2.2879E-12 2.6180E-13 2.8384E-11 3.6697E-11 -9.6158E-12 2.5009E-11 -4.4911E-12 3.3048E-12 3.6697E-11 1.4670E-10 # lat0 lon0 xBary yBary zBary JD0 -25.403694 -61.597239 -0.700001 -0.311866 -0.656845 2456540.532578 # Heliocentric elements and errors Epoch: 2456540.5000 = 2013/09/05 Mean Anomaly: 357.40882 +/- 0.013 Argument of Peri: 305.30063 +/- 0.043 Long of Asc Node: 9.07809 +/- 0.001 Inclination: 26.38882 +/- 0.000 Eccentricity: 0.66170433 +/- 0.0009 Semi-Major Axis: 109.48698644 +/- 0.3199 Time of Perihelion: 2459552.3728 +/- 7.5 Perihelion: 37.03897331 +/- 0.1491 Aphelion: 181.93499958 +/- 0.5413 Period (y) 1145.6500 +/- 5.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 16.86658368 +/- 0.0031 Ecliptic Y -29.71528891 +/- 0.0058 Ecliptic Z -15.87928535 +/- 0.0031 Ecliptic XDOT 0.00300547 +/- 0.0000 Ecliptic YDOT 0.00187257 +/- 0.0000 Ecliptic ZDOT 0.00068218 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 37.67800079 +/- 0.0050 Geocenter to KBO 37.01544944 +/- 0.0073 # Hcoef: 7.83
The following table shows the complete astrometric record for 14SD403. 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 (14SD403) followed by the observatory code and reference code for the source of the astrometry.
2013 09 05.03180 20 30 18.996 -45 12 25.12 24.0r 14SD403 W84 C~52UA 2014 09 19.98626 20 39 33.444 -44 15 58.92 23.0i 14SD403 W84 C~52UA 2014 09 25.01967 20 39 15.669 -44 13 35.97 24.0r 14SD403 W84 C~52UA 2014 10 02.07455 20 38 56.056 -44 09 45.23 22.5i 14SD403 W84 C~52UA 2017 09 23.05198 21 08 54.796 -41 20 03.15 23.3i 14SD403 W84 C~52UA 2017 09 23.05337 21 08 54.804 -41 20 03.30 23.8r 14SD403 W84 C~52UA 2017 10 13.07247 21 07 55.111 -41 10 09.90 23.6i 14SD403 W84 C~52UA 2017 10 17.01234 21 07 49.189 -41 07 40.28 23.7r 14SD403 W84 C~52UA
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 -0.01 0.00 0.06
2 1.0403 6625.36 0.04 1581.48 0.10
3 1.0540 6484.98 -0.05 1774.56 -0.13
4 1.0734 6351.24 0.03 2057.31 -0.05
5 4.0493 28609.39 0.01 4998.96 0.12
6 4.0493 28609.42 0.09 4998.78 -0.11
7 4.1041 28202.88 0.01 5809.35 0.13
8 4.1149 28197.16 -0.11 5974.78 -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.
14SD403 quality flag:2 Type: 7:1EEEEEE SCATNEAR 7:1EEEEEE axisobj 110.295 111.180 109.423 ecceobj 0.665 0.667 0.662 incobj 26.395 26.395 26.395 qmin 35.961 35.501 36.100 qmax 190.732 194.826 190.353 amean 110.182 111.882 110.178 amin 107.742 109.206 107.919 amax 114.046 115.773 113.779 emean 0.661 0.665 0.661 emin 0.649 0.651 0.650 emax 0.675 0.684 0.673 imean 27.003 27.048 26.972 imin 26.208 25.721 26.443 imax 27.580 28.042 27.615 excite_mean 0.802 0.806 0.802 fracstop 1.000 1.000 1.000 cjmean 2.832 2.832 2.830 libcent 0 179.8 -180.0 180.0 libamp 0 175.6 -180.0 170.7 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 179.4 166.0 217.4 kozaiamp 180.0 180.0 180.0