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: 13SQ102 # Created Mon Apr 28 01:09:42 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 29 observations of 29 # Arc: 5.06y # First observation: 2013/09/29 # Last observation: 2018/10/22 # Chi-squared of fit: 20.79 DOF: 52 RMS: 0.15 # Min/Max residuals: -0.43 0.42 # Exact a, adot, b, bdot, g, gdot: 1.558219E-05 2.061441E-02 2.357562E-06 2.963739E-03 2.114720E-02 -1.073480E-02 # Covariance matrix: 4.9866E-13 -5.2571E-13 5.3815E-14 -7.2028E-14 -1.6962E-13 -4.5100E-12 -5.2571E-13 7.1041E-13 -8.1211E-14 1.0536E-13 8.7069E-14 6.5139E-12 5.3815E-14 -8.1211E-14 1.6829E-13 -5.8282E-14 2.8917E-14 -7.7066E-13 -7.2028E-14 1.0536E-13 -5.8282E-14 3.5379E-14 -4.2868E-15 9.9526E-13 -1.6962E-13 8.7069E-14 2.8917E-14 -4.2868E-15 1.6540E-12 5.9321E-13 -4.5100E-12 6.5139E-12 -7.7066E-13 9.9526E-13 5.9321E-13 6.1412E-11 # lat0 lon0 xBary yBary zBary JD0 -28.561352 -58.835635 -0.911451 -0.198543 -0.364923 2456565.498218 # Heliocentric elements and errors Epoch: 2456566.5000 = 2013/10/01 Mean Anomaly: 343.13819 +/- 0.023 Argument of Peri: 357.99987 +/- 0.024 Long of Asc Node: 14.30840 +/- 0.001 Inclination: 29.54950 +/- 0.000 Eccentricity: 0.61556816 +/- 0.0004 Semi-Major Axis: 91.23631360 +/- 0.0842 Time of Perihelion: 2471475.6101 +/- 420.7 Perihelion: 35.07414364 +/- 0.0505 Aphelion: 147.39848356 +/- 0.1415 Period (y) 871.4848 +/- 1.21 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 22.48823917 +/- 0.0013 Ecliptic Y -35.42021034 +/- 0.0022 Ecliptic Z -22.60808266 +/- 0.0014 Ecliptic XDOT 0.00174079 +/- 0.0000 Ecliptic YDOT 0.00226733 +/- 0.0000 Ecliptic ZDOT 0.00100161 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 47.65996597 +/- 0.0018 Geocenter to KBO 47.28801520 +/- 0.0029 # Hcoef: 6.12
The following table shows the complete astrometric record for 13SQ102. 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 (13SQ102) followed by the observatory code and reference code for the source of the astrometry.
2013 09 29.99744 20 49 14.045 -47 31 38.17 22.6i 13SQ102 W84 C~4yR1 2013 10 30.044630 20 48 42.65 -47 14 07.0 23.5g 13SQ102 W84 C~35bY 2013 10 30.04516 20 48 42.687 -47 14 07.30 23.6g 13SQ102 W84 C~4yR2 2014 08 29.076169 20 57 53.40 -47 07 51.4 23.2g 13SQ102 W84 C~35bY 2014 08 29.07670 20 57 53.434 -47 07 51.43 23.1g 13SQ102 W84 C~4yR2 2014 09 12.05078 20 56 43.263 -47 05 39.02 22.7i 13SQ102 W84 C~4yR2 2014 09 20.01295 20 56 09.593 -47 03 22.06 22.8r 13SQ102 W84 C~4yR2 2014 09 20.02835 20 56 09.523 -47 03 21.71 22.6i 13SQ102 W84 C~4yR2 2014 09 24.06034 20 55 54.581 -47 01 55.60 23.0r 13SQ102 W84 C~4yR2 2014 09 24.06307 20 55 54.577 -47 01 55.76 22.5i 13SQ102 W84 C~4yR2 2014 09 26.00514 20 55 47.932 -47 01 10.33 23.6g 13SQ102 W84 C~4yR2 2014 09 26.04028 20 55 47.811 -47 01 09.55 22.7r 13SQ102 W84 C~4yR2 2014 10 02.01339 20 55 29.755 -46 58 35.39 22.6z 13SQ102 W84 C~4yR2 2014 10 14.01268 20 55 04.971 -46 52 22.82 22.7z 13SQ102 W84 C~4yR2 2014 10 21.03275 20 54 58.068 -46 48 10.55 23.1z 13SQ102 W84 C~4yR2 2014 10 22.033692 20 54 57.58 -46 47 32.5 22.6z 13SQ102 W84 C~35bY 2016 09 08.02771 21 09 46.96 -45 54 51.8 22.3r 13SQ102 W84 C~3clG 2017 09 08.05344 21 16 11.559 -45 15 51.81 22.9z 13SQ102 W84 C~4yR2 2017 09 12.09461 21 15 51.515 -45 15 14.13 23.7g 13SQ102 W84 C~4yR2 2017 09 23.05749 21 15 02.992 -45 12 31.27 22.6i 13SQ102 W84 C~4yR2 2017 09 23.05887 21 15 02.987 -45 12 31.19 22.4r 13SQ102 W84 C~4yR2 2017 09 23.06026 21 15 02.994 -45 12 31.20 23.4g 13SQ102 W84 C~4yR2 2017 09 27.00518 21 14 47.962 -45 11 11.12 22.3i 13SQ102 W84 C~4yR2 2017 09 27.04443 21 14 47.824 -45 11 10.42 22.7r 13SQ102 W84 C~4yR2 2017 10 13.07390 21 14 02.409 -45 03 57.59 23.4g 13SQ102 W84 C~4yR2 2017 10 16.12089 21 13 56.870 -45 02 17.38 22.6i 13SQ102 W84 C~4yR2 2017 10 16.12226 21 13 56.853 -45 02 17.27 23.2r 13SQ102 W84 C~4yR2 2017 10 19.09088 21 13 52.453 -45 00 34.39 23.2r 13SQ102 W84 C~4yR2 2018 10 22.05280 21 20 06.605 -44 18 28.07 21.8z 13SQ102 W84 C~4yR2
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 -0.04 0.00 -0.04
2 0.0823 0.00 -0.38 0.00 0.41
3 0.0823 0.00 0.17 0.00 0.09
4 0.9119 0.00 -0.43 0.00 0.03
5 0.9119 0.00 0.12 0.00 0.00
6 0.9502 0.00 0.06 0.00 0.06
7 0.9720 0.00 0.01 0.00 -0.13
8 0.9720 0.00 -0.12 0.00 -0.08
9 0.9831 0.00 -0.05 0.00 0.06
10 0.9831 0.00 0.04 0.00 -0.16
11 0.9884 0.00 0.03 0.00 0.03
12 0.9885 0.00 0.02 0.00 -0.03
13 1.0048 0.00 0.19 0.00 -0.09
14 1.0377 0.00 0.13 0.00 -0.05
15 1.0569 0.00 0.13 0.00 -0.25
16 1.0596 0.00 0.42 0.00 -0.04
17 2.9405 0.00 -0.13 0.00 0.22
18 3.9399 0.00 0.02 0.00 -0.19
19 3.9510 0.00 0.16 0.00 0.01
20 3.9810 0.00 -0.01 0.00 -0.04
21 3.9810 0.00 0.00 0.00 0.02
22 3.9810 0.00 0.19 0.00 -0.02
23 3.9918 0.00 -0.04 0.00 0.07
24 3.9919 0.00 0.08 0.00 -0.07
25 4.0358 0.00 -0.18 0.00 0.07
26 4.0441 0.00 0.09 0.00 -0.04
27 4.0441 0.00 -0.13 0.00 0.02
28 4.0523 0.00 -0.21 0.00 0.13
29 5.0597 0.00 0.00 0.00 -0.03
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.
13SQ102 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 92.133 92.131 92.134 ecceobj 0.620 0.619 0.620 incobj 29.546 29.546 29.546 qmin 34.485 34.177 34.485 qmax 152.771 153.906 153.686 amean 91.912 91.916 92.003 amin 90.430 90.146 90.350 amax 94.270 94.485 94.514 emean 0.610 0.615 0.614 emin 0.595 0.603 0.600 emax 0.625 0.629 0.626 imean 30.285 29.859 30.032 imin 29.396 29.344 29.396 imax 31.162 30.473 30.750 excite_mean 0.792 0.791 0.792 fracstop 1.000 1.000 1.000 cjmean 2.717 2.717 2.717 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 46.6 57.0 51.1 kozaiamp 180.0 180.0 180.0