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: 15OC193 # Created Wed May 21 01:10:34 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 20 observations of 20 # Arc: 8.34y # First observation: 2012/06/16 # Last observation: 2020/10/19 # Chi-squared of fit: 7.03 DOF: 34 RMS: 0.10 # Min/Max residuals: -0.20 0.21 # Exact a, adot, b, bdot, g, gdot: 2.144373E-05 3.860445E-02 -2.582477E-06 -5.516589E-03 2.800877E-02 -6.687447E-03 # Covariance matrix: 4.7094E-13 -2.0071E-13 -3.4986E-14 2.2571E-14 -5.2648E-14 -4.4878E-13 -2.0071E-13 1.2306E-13 1.7096E-14 -1.4119E-14 1.1691E-13 2.7626E-13 -3.4986E-14 1.7096E-14 2.6037E-13 -5.6836E-14 -5.2847E-14 8.9735E-14 2.2571E-14 -1.4119E-14 -5.6836E-14 1.7529E-14 4.4590E-15 -4.8858E-14 -5.2648E-14 1.1691E-13 -5.2847E-14 4.4590E-15 7.9508E-13 -1.3162E-13 -4.4878E-13 2.7626E-13 8.9735E-14 -4.8858E-14 -1.3162E-13 9.8453E-13 # lat0 lon0 xBary yBary zBary JD0 10.165910 -23.665674 0.962912 0.058370 -0.325551 2456094.846639 # Heliocentric elements and errors Epoch: 2456094.5000 = 2012/06/16 Mean Anomaly: 358.68018 +/- 0.002 Argument of Peri: 152.70325 +/- 0.005 Long of Asc Node: 206.35258 +/- 0.001 Inclination: 12.77204 +/- 0.000 Eccentricity: 0.83101208 +/- 0.0002 Semi-Major Axis: 204.24044191 +/- 0.1920 Time of Perihelion: 2460003.1313 +/- 1497.7 Perihelion: 34.51416695 +/- 0.0450 Aphelion: 373.96671686 +/- 0.3529 Period (y) 2918.9107 +/- 4.12 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 32.10638633 +/- 0.0010 Ecliptic Y -15.11821785 +/- 0.0004 Ecliptic Z 6.30149923 +/- 0.0002 Ecliptic XDOT 0.00100732 +/- 0.0000 Ecliptic YDOT 0.00367955 +/- 0.0000 Ecliptic ZDOT -0.00064605 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 36.04303938 +/- 0.0009 Geocenter to KBO 35.70326098 +/- 0.0011 # Hcoef: 9.39
The following table shows the complete astrometric record for 15OC193. 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 (15OC193) followed by the observatory code and reference code for the source of the astrometry.
2012 06 16.345873 22 17 26.524 +00 16 24.72 15OC193 309 C~8r6v 2012 06 16.357276 22 17 26.510 +00 16 24.70 15OC193 309 C~8r6v 2012 06 16.371987 22 17 26.485 +00 16 25.06 15OC193 309 C~8r6v 2015 07 15.56612 22 43 18.09 +01 50 51.0 25.2r 15OC193 T09 C~8nco 2015 07 15.61088 22 43 17.98 +01 50 50.7 25.4r 15OC193 T09 C~8nco 2015 07 15.61512 22 43 17.96 +01 50 50.7 24.9r 15OC193 T09 C~8nco 2015 07 21.49256 22 43 00.25 +01 49 53.6 25.0i 15OC193 T09 C~8nco 2015 07 21.50888 22 43 00.20 +01 49 53.3 24.8i 15OC193 T09 C~8nco 2015 07 21.61178 22 42 59.85 +01 49 52.1 25.1i 15OC193 T09 C~8nco 2015 08 20.42155 22 40 58.09 +01 39 40.1 24.4z 15OC193 T09 C~8nco 2015 08 20.42965 22 40 58.06 +01 39 39.6 24.4z 15OC193 T09 C~8nco 2015 08 20.45392 22 40 57.95 +01 39 39.1 24.2z 15OC193 T09 C~8nco 2015 08 20.46203 22 40 57.90 +01 39 38.9 24.3z 15OC193 T09 C~8nco 2015 08 20.49655 22 40 57.75 +01 39 37.8 24.2z 15OC193 T09 C~8nco 2016 06 08.542282 22 53 01.61 +02 19 30.1 15OC193 T09 C~8r6v 2016 06 08.550413 22 53 01.61 +02 19 30.3 15OC193 T09 C~8r6v 2016 09 05.316018 22 48 53.77 +02 03 16.1 15OC193 T09 C~8r6v 2016 09 05.324114 22 48 53.73 +02 03 15.9 15OC193 T09 C~8r6v 2020 10 19.349074 23 23 32.51 +03 45 52.6 15OC193 T09 C~8r6v 2020 10 19.376118 23 23 32.43 +03 45 51.4 15OC193 T09 C~8r6v
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 0.11 0.00 -0.08
2 0.0000 0.00 0.07 0.00 -0.20
3 0.0001 0.00 -0.08 0.00 0.03
4 3.0779 0.00 -0.19 0.00 -0.08
5 3.0781 0.00 0.10 0.00 -0.04
6 3.0781 0.00 -0.01 0.00 -0.00
7 3.0942 0.00 -0.01 0.00 0.21
8 3.0942 0.00 0.05 0.00 0.10
9 3.0945 0.00 -0.05 0.00 0.11
10 3.1761 0.00 -0.18 0.00 0.14
11 3.1761 0.00 -0.05 0.00 -0.13
12 3.1762 0.00 0.05 0.00 0.05
13 3.1762 0.00 -0.12 0.00 0.08
14 3.1763 0.00 0.11 0.00 -0.04
15 3.9786 0.00 0.07 0.00 -0.05
16 3.9787 0.00 -0.02 0.00 0.01
17 4.2217 0.00 0.13 0.00 -0.02
18 4.2217 0.00 0.12 0.00 0.06
19 8.3422 0.00 -0.16 0.00 0.05
20 8.3423 0.00 0.14 0.00 -0.18
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.
15OC193 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 205.884 205.876 205.892 ecceobj 0.832 0.832 0.832 incobj 12.772 12.772 12.772 qmin 32.723 32.176 32.629 qmax 380.100 539.337 387.678 amean 176.900 223.120 185.831 amin 157.733 187.021 170.099 amax 207.414 287.049 211.213 emean 0.804 0.843 0.814 emin 0.779 0.811 0.791 emax 0.833 0.880 0.836 imean 13.377 13.386 13.227 imin 11.811 12.277 11.753 imax 14.338 14.243 14.382 excite_mean 0.836 0.874 0.845 fracstop 1.000 1.000 1.000 cjmean 2.973 2.971 2.973 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 202.1 193.2 207.6 kozaiamp 55.5 39.1 55.1