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: 04KC19 # Created Fri Nov 22 02:08:36 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 19 observations of 19 # Arc: 12.01y # First observation: 2004/05/24 # Last observation: 2016/05/29 # Chi-squared of fit: 5.25 DOF: 32 RMS: 0.09 # Min/Max residuals: -0.22 0.18 # Exact a, adot, b, bdot, g, gdot: 1.956956E-05 4.309571E-02 1.589630E-06 4.189059E-03 3.420161E-02 -2.678036E-03 # Covariance matrix: 3.1592E-13 -2.4129E-13 2.5505E-14 -2.1222E-14 1.0403E-12 -3.8670E-13 -2.4129E-13 3.5690E-13 -4.0285E-14 3.3597E-14 -1.9343E-12 6.1281E-13 2.5505E-14 -4.0285E-14 1.6311E-13 -2.3831E-14 2.2054E-13 -7.0275E-14 -2.1222E-14 3.3597E-14 -2.3831E-14 8.7963E-15 -1.8440E-13 5.8605E-14 1.0403E-12 -1.9343E-12 2.2054E-13 -1.8440E-13 1.2411E-11 -3.3673E-12 -3.8670E-13 6.1281E-13 -7.0275E-14 5.8605E-14 -3.3673E-12 1.0690E-12 # lat0 lon0 xBary yBary zBary JD0 -0.968124 -129.368325 -0.229130 -0.016617 -0.986375 2453149.863713 # Heliocentric elements and errors Epoch: 2453150.5000 = 2004/05/25 Mean Anomaly: 350.63406 +/- 103.400 Argument of Peri: 6.04516 +/- 0.005 Long of Asc Node: 240.59060 +/- 0.000 Inclination: 5.63675 +/- 0.000 Eccentricity: 0.23869535 +/- 0.0011 Semi-Major Axis: 39.42112088 +/- 0.1010 Time of Perihelion: 2455502.5177 +/- 25968.4 Perihelion: 30.01148268 +/- 0.0876 Aphelion: 48.83075907 +/- 0.1320 Period (y) 247.5151 +/- 0.95 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -18.99545255 +/- 0.0031 Ecliptic Y -23.50700470 +/- 0.0037 Ecliptic Z -0.49393984 +/- 0.0001 Ecliptic XDOT 0.00279670 +/- 0.0000 Ecliptic YDOT -0.00203388 +/- 0.0000 Ecliptic ZDOT 0.00033903 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 30.22668204 +/- 0.0035 Geocenter to KBO 29.23845677 +/- 0.0049 # Hcoef: 8.21
The following table shows the complete astrometric record for 04KC19. 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 (04KC19) followed by the observatory code and reference code for the source of the astrometry.
2004 05 24.36297 15 11 41.57 -18 50 34.2 22.9g 04KC19 568 C~0Uqx 2004 05 24.38613 15 11 41.42 -18 50 33.6 22.9g 04KC19 568 C~0Uqx 2004 05 24.41052 15 11 41.26 -18 50 32.9 22.7g 04KC19 568 C~0Uqx 2004 05 25.37186 15 11 35.28 -18 50 06.8 04KC19 568 C~0Uqx 2004 06 10.29553 15 10 02.52 -18 43 09.6 22.7i 04KC19 568 C~0Uqx 2004 06 10.42945 15 10 01.79 -18 43 06.5 23.1i 04KC19 568 C~0Uqx 2005 05 14.39397 15 23 11.09 -19 19 42.4 23.2r 04KC19 568 C~0Uqx 2005 05 14.42769 15 23 10.85 -19 19 41.4 23.1r 04KC19 568 C~0Uqx 2005 05 14.46641 15 23 10.60 -19 19 40.5 23.0r 04KC19 568 C~0Uqx 2005 05 17.36867 15 22 51.73 -19 18 23.7 22.9r 04KC19 568 C~0Uqx 2008 05 03.37228 15 56 05.13 -20 23 43.3 04KC19 695 C~0Uqx 2008 05 03.42507 15 56 04.78 -20 23 42.0 04KC19 695 C~0Uqx 2008 05 03.42677 15 56 04.79 -20 23 42.1 04KC19 695 C~0Uqx 2008 05 04.36040 15 55 58.96 -20 23 22.7 04KC19 695 C~0Uqx 2008 05 07.47995 15 55 39.20 -20 22 16.5 23.0r 04KC19 568 C~0Uqx 2008 05 07.50307 15 55 39.04 -20 22 16.1 22.9r 04KC19 568 C~0Uqx 2008 05 07.52626 15 55 38.89 -20 22 15.6 22.9r 04KC19 568 C~0Uqx 2016 05 29.36583 17 19 16.594 -21 09 11.76 22.9R 04KC19 G37 C~2bkb 2016 05 29.42761 17 19 16.190 -21 09 10.80 04KC19 G37 C~2bkb
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 0.09 0.00 0.05
2 0.0001 0.00 0.06 0.00 0.02
3 0.0001 0.00 -0.01 0.00 0.05
4 0.0028 0.00 0.01 0.00 -0.17
5 0.0464 0.00 -0.07 0.00 0.09
6 0.0467 0.00 -0.04 0.00 -0.12
7 0.9720 0.00 0.07 0.00 0.02
8 0.9721 0.00 -0.17 0.00 0.13
9 0.9722 0.00 -0.07 0.00 0.01
10 0.9802 0.00 0.07 0.00 0.01
11 3.9425 0.00 0.01 0.00 -0.08
12 3.9427 0.00 -0.22 0.00 0.11
13 3.9427 0.00 0.09 0.00 -0.02
14 3.9452 0.00 0.05 0.00 -0.10
15 3.9538 0.00 0.11 0.00 0.07
16 3.9538 0.00 -0.03 0.00 -0.03
17 3.9539 0.00 -0.01 0.00 -0.02
18 12.0137 0.00 -0.07 0.00 -0.17
19 12.0139 0.00 0.07 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.
04KC19 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.002 39.002 39.002 ecceobj 0.232 0.232 0.232 incobj 5.651 5.651 5.651 qmin 29.418 29.417 29.419 qmax 50.007 50.002 50.012 amean 39.456 39.456 39.456 amin 39.002 39.002 39.002 amax 39.974 39.977 39.974 emean 0.218 0.218 0.218 emin 0.189 0.189 0.189 emax 0.253 0.253 0.253 imean 8.891 8.890 8.891 imin 6.781 6.781 6.781 imax 10.315 10.316 10.315 excite_mean 0.268 0.268 0.268 fracstop 1.000 1.000 1.000 cjmean 2.970 2.970 2.970 libcent 0 180.3 179.4 179.6 libamp 0 83.7 83.3 83.1 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 203.1 203.0 203.0 kozaiamp 180.0 180.0 180.0