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: 03KO20 # Created Sun Dec 22 02:08:30 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 12 observations of 12 # Arc: 13.00y # First observation: 2003/05/30 # Last observation: 2016/05/29 # Chi-squared of fit: 14.93 DOF: 18 RMS: 0.20 # Min/Max residuals: -0.29 0.42 # Exact a, adot, b, bdot, g, gdot: 1.452907E-05 2.040778E-02 1.856285E-07 6.133585E-04 2.235631E-02 -6.491289E-04 # Covariance matrix: 6.0471E-13 -4.6958E-13 1.2153E-14 -1.3530E-14 -5.2577E-14 -1.5452E-12 -4.6958E-13 6.8461E-13 -1.8032E-14 2.0707E-14 -1.9699E-13 2.3697E-12 1.2153E-14 -1.8032E-14 1.9933E-13 -2.0089E-14 4.8934E-15 -6.2895E-14 -1.3530E-14 2.0707E-14 -2.0089E-14 6.3831E-15 -6.3457E-15 7.2329E-14 -5.2577E-14 -1.9699E-13 4.8934E-15 -6.3457E-15 3.6923E-13 -7.3144E-13 -1.5452E-12 2.3697E-12 -6.2895E-14 7.2329E-14 -7.3144E-13 8.2779E-12 # lat0 lon0 xBary yBary zBary JD0 -0.457517 -146.588458 -0.582876 -0.006617 -0.832929 2452789.530403 # Heliocentric elements and errors Epoch: 2452790.5000 = 2003/05/31 Mean Anomaly: 204.97706 +/- 0.129 Argument of Peri: 142.29873 +/- 0.127 Long of Asc Node: 228.67251 +/- 0.001 Inclination: 1.78922 +/- 0.000 Eccentricity: 0.03913143 +/- 0.0002 Semi-Major Axis: 43.99439761 +/- 0.0063 Time of Perihelion: 2498687.8878 +/- 40.3 Perihelion: 42.27283383 +/- 0.0094 Aphelion: 45.71596139 +/- 0.0097 Period (y) 291.8128 +/- 0.06 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -37.71298568 +/- 0.0010 Ecliptic Y -25.57145620 +/- 0.0007 Ecliptic Z -0.35717576 +/- 0.0000 Ecliptic XDOT 0.00143612 +/- 0.0000 Ecliptic YDOT -0.00204788 +/- 0.0000 Ecliptic ZDOT 0.00007593 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 45.56640400 +/- 0.0009 Geocenter to KBO 44.73016076 +/- 0.0012 # Hcoef: 6.61
The following table shows the complete astrometric record for 03KO20. 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 (03KO20) followed by the observatory code and reference code for the source of the astrometry.
2003 05 30.02966 14 04 05.73 -13 04 57.2 22.4R 03KO20 807 Ci2136 2003 05 30.12296 14 04 05.39 -13 04 55.8 03KO20 807 Ci2136 2003 05 31.06967 14 04 02.24 -13 04 38.0 03KO20 807 Ci2136 2004 03 16.39016 14 13 36.28 -13 52 41.1 23.2R 03KO20 695 C~077O 2004 03 16.48226 14 13 35.98 -13 52 39.7 03KO20 695 C~077O 2004 08 11.99963 14 07 34.77 -13 19 57.0 22.2R 03KO20 807 Cl2711 2004 08 13.01778 14 07 36.93 -13 20 07.7 03KO20 807 Cl2711 2005 03 09.51012 14 18 33.32 -14 15 34.2 23.1R 03KO20 695 Cn0206 2005 03 10.51628 14 18 30.63 -14 15 20.6 03KO20 695 Cn0206 2005 03 11.50263 14 18 27.92 -14 15 07.0 03KO20 695 Cn0206 2016 05 29.22770 15 05 06.902 -17 22 58.20 23.6R 03KO20 G37 C~2bkY 2016 05 29.30161 15 05 06.594 -17 22 57.33 03KO20 G37 C~2bkY
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 -0.00 0.00 0.05
2 0.0003 0.00 -0.24 0.00 -0.29
3 0.0028 0.00 0.42 0.00 -0.15
4 0.7977 0.00 -0.22 0.00 0.16
5 0.7980 0.00 -0.25 0.00 0.07
6 1.2046 0.00 -0.08 0.00 0.04
7 1.2074 0.00 -0.24 0.00 -0.22
8 1.7782 0.00 0.11 0.00 0.09
9 1.7809 0.00 0.23 0.00 0.16
10 1.7836 0.00 0.24 0.00 0.16
11 12.9999 0.00 -0.09 0.00 0.19
12 13.0001 0.00 0.05 0.00 -0.24
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.
03KO20 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.660 43.660 43.660 ecceobj 0.048 0.048 0.048 incobj 1.793 1.793 1.793 qmin 41.130 41.132 41.129 qmax 47.013 47.013 47.014 amean 43.975 43.975 43.975 amin 43.631 43.631 43.630 amax 44.328 44.324 44.331 emean 0.046 0.046 0.046 emin 0.031 0.031 0.031 emax 0.061 0.061 0.061 imean 3.377 3.377 3.377 imin 2.728 2.728 2.728 imax 4.006 4.006 4.006 excite_mean 0.075 0.075 0.075 fracstop 1.000 1.000 1.000 cjmean 3.094 3.094 3.094 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 181.9 181.9 181.9 kozaiamp 180.0 180.0 180.0