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: 13SR102 # Created Sun Dec 22 02:09:39 2024 # Orbit generated from Bernstein formalism # Fitting 28 observations of 28 # Arc: 5.00y # First observation: 2013/09/30 # Last observation: 2018/09/29 Preliminary a, adot, b, bdot, g, gdot: -0.000580 0.017231 0.000033 -0.001339 0.020709 0.000000 # Chi-squared of fit: 6.37 DOF: 50 RMS: 0.08 # Min/Max residuals: -0.26 0.26 # Exact a, adot, b, bdot, g, gdot: 1.282569E-05 1.651618E-02 -8.175026E-07 -1.281127E-03 1.995913E-02 -7.174903E-03 # Covariance matrix: 3.8041E-13 -3.1386E-13 -1.9060E-14 2.4243E-14 -3.6749E-14 -2.9166E-12 -3.1386E-13 3.5707E-13 2.5636E-14 -3.2143E-14 -2.3705E-14 3.6816E-12 -1.9060E-14 2.5636E-14 1.7196E-13 -5.0840E-14 -4.3960E-14 2.6676E-13 2.4243E-14 -3.2143E-14 -5.0840E-14 2.2894E-14 4.2313E-14 -3.3826E-13 -3.6749E-14 -2.3705E-14 -4.3960E-14 4.2313E-14 2.0617E-12 3.5070E-13 -2.9166E-12 3.6816E-12 2.6676E-13 -3.3826E-13 3.5070E-13 4.0280E-11 # lat0 lon0 xBary yBary zBary JD0 -29.965821 -57.189239 -0.899184 -0.220375 -0.382404 2456565.504238 # Heliocentric elements and errors Epoch: 2456560.5000 = 2013/09/25 Mean Anomaly: 298.25013 +/- 0.045 Argument of Peri: 10.12164 +/- 0.033 Long of Asc Node: 41.51612 +/- 0.001 Inclination: 29.92576 +/- 0.000 Eccentricity: 0.38492059 +/- 0.0003 Semi-Major Axis: 52.73410976 +/- 0.0211 Time of Perihelion: 2480552.6640 +/- 9.7 Perihelion: 32.43566507 +/- 0.0218 Aphelion: 73.03255444 +/- 0.0341 Period (y) 382.9531 +/- 0.23 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 24.51462987 +/- 0.0017 Ecliptic Y -36.36116435 +/- 0.0026 Ecliptic Z -25.02534443 +/- 0.0018 Ecliptic XDOT 0.00138839 +/- 0.0000 Ecliptic YDOT 0.00201669 +/- 0.0000 Ecliptic ZDOT 0.00033949 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 50.49127860 +/- 0.0022 Geocenter to KBO 50.10237770 +/- 0.0036 # Hcoef: 5.65
The following table shows the complete astrometric record for 13SR102. 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 (13SR102) followed by the observatory code and reference code for the source of the astrometry.
2013 09 30.00346 21 00 01.207 -48 24 29.88 22.7r 13SR102 W84 C~4yR2 2013 09 30.00658 21 00 01.188 -48 24 29.85 23.5g 13SR102 W84 C~4yR2 2014 09 04.06235 21 07 23.366 -48 15 36.70 22.3z 13SR102 W84 C~4yR2 2014 09 15.04840 21 06 30.875 -48 14 04.93 23.6g 13SR102 W84 C~4yR2 2014 09 20.01585 21 06 09.908 -48 12 55.68 22.8r 13SR102 W84 C~4yR2 2014 09 24.035694 21 05 54.41 -48 11 47.3 22.7r 13SR102 W84 C~35bY 2014 10 01.03333 21 05 30.861 -48 09 23.50 21.7z 13SR102 W84 C~4yR2 2014 10 01.03471 21 05 30.860 -48 09 23.56 22.5i 13SR102 W84 C~4yR2 2014 10 14.01409 21 04 59.992 -48 03 38.87 23.2g 13SR102 W84 C~4yR2 2014 10 14.016377 21 04 59.98 -48 03 38.7 22.6z 13SR102 W84 C~35bY 2014 10 14.01690 21 04 59.994 -48 03 38.94 22.7z 13SR102 W84 C~4yR2 2014 10 21.02548 21 04 50.82 -47 59 55.6 23.0g 13SR102 W84 C~3clG 2014 10 21.05419 21 04 50.80 -47 59 54.7 22.4r 13SR102 W84 C~3clG 2016 09 07.05637 21 18 18.970 -47 41 11.03 22.7i 13SR102 W84 C~4yR2 2016 09 07.05774 21 18 18.968 -47 41 11.19 22.3r 13SR102 W84 C~4yR2 2016 09 07.06703 21 18 18.898 -47 41 11.14 21.8z 13SR102 W84 C~4yR2 2016 09 07.17238 21 18 18.370 -47 41 10.62 23.0g 13SR102 W84 C~4yR2 2016 09 24.01934 21 17 02.450 -47 38 04.05 22.6r 13SR102 W84 C~4yR2 2016 09 24.02072 21 17 02.452 -47 38 04.01 23.2g 13SR102 W84 C~4yR2 2017 09 08.10212 21 23 53.426 -47 22 05.50 22.6z 13SR102 W84 C~4yR2 2017 09 12.10008 21 23 33.508 -47 21 42.23 22.9g 13SR102 W84 C~4yR2 2017 09 23.074884 21 22 44.19 -47 19 37.4 23.3g 13SR102 W84 C~35bY 2017 09 23.07542 21 22 44.195 -47 19 37.35 23.2g 13SR102 W84 C~4yR2 2017 11 01.05778 21 21 18.347 -47 01 37.75 22.3z 13SR102 W84 C~4yR2 2018 09 15.23601 21 28 58.872 -47 01 02.93 22.5i 13SR102 W84 C~4yR2 2018 09 15.23737 21 28 58.882 -47 01 02.65 22.4r 13SR102 W84 C~4yR2 2018 09 15.23874 21 28 58.887 -47 01 02.67 23.2g 13SR102 W84 C~4yR2 2018 09 29.11848 21 27 59.737 -46 57 54.38 22.4z 13SR102 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 0.05 0.00 -0.04
2 0.0000 -0.17 -0.05 0.09 -0.05
3 0.9283 4332.43 -0.00 -979.62 -0.07
4 0.9584 3872.05 -0.03 -712.03 -0.10
5 0.9720 3699.08 -0.04 -574.88 -0.01
6 0.9830 3576.99 0.06 -457.47 0.11
7 1.0021 3404.81 -0.03 -241.71 -0.00
8 1.0021 3404.78 -0.03 -241.76 -0.10
9 1.0377 3231.53 -0.00 187.71 0.13
10 1.0377 3231.48 -0.04 187.91 0.26
11 1.0377 3231.53 0.01 187.63 -0.03
12 1.0569 3220.86 0.04 428.98 0.08
13 1.0569 3220.97 0.10 429.90 -0.02
14 2.9379 11226.56 0.02 -1452.52 0.05
15 2.9379 11226.48 0.01 -1452.66 -0.13
16 2.9379 11225.85 -0.20 -1452.35 -0.03
17 2.9382 11221.10 -0.05 -1449.83 -0.09
18 2.9843 10579.81 0.05 -986.19 0.03
19 2.9843 10579.85 0.13 -986.16 0.02
20 3.9400 14807.46 -0.03 -1714.62 0.00
21 3.9510 14629.95 0.00 -1612.75 -0.08
22 3.9810 14216.50 -0.04 -1299.40 -0.03
23 3.9810 14216.57 0.04 -1299.37 -0.02
24 4.0878 13831.31 0.02 39.71 -0.01
25 4.9589 18187.19 -0.26 -1819.82 -0.05
26 4.9589 18187.40 0.00 -1819.60 0.12
27 4.9589 18187.44 0.10 -1819.64 0.04
28 4.9969 17708.96 0.18 -1397.92 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.
13SR102 quality flag:3 Type: 7:3EEEE 7:3EEEE 7:3EEEE Type: 7:3EEII 7:3EEII Type: 7:3IIII 7:3IIII axisobj 52.998 53.057 52.938 ecceobj 0.386 0.387 0.386 incobj 29.958 29.958 29.958 qmin 32.209 32.215 32.125 qmax 74.629 74.641 74.608 amean 52.968 52.967 52.968 amin 52.434 52.421 52.340 amax 53.687 53.655 53.740 emean 0.301 0.296 0.337 emin 0.241 0.227 0.273 emax 0.392 0.392 0.393 imean 32.147 32.277 31.014 imin 29.199 29.200 28.934 imax 33.893 34.201 33.031 excite_mean 0.614 0.613 0.617 fracstop 1.000 1.000 1.000 cjmean 2.706 2.706 2.706 libcent 0 179.2 176.5 184.2 libamp 0 44.1 53.6 140.7 libcent 1 192.2 197.5 -180.0 libamp 1 66.9 70.6 -180.0 libcent 2 205.8 215.8 -180.0 libamp 2 103.5 103.7 -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 69.0 53.3 91.5 kozaiamp 180.0 180.0 80.2