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: 04KB19 # Created Fri Nov 22 02:08:36 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 19 observations of 19 # Arc: 10.89y # First observation: 2004/05/24 # Last observation: 2015/04/15 # Chi-squared of fit: 14.94 DOF: 32 RMS: 0.16 # Min/Max residuals: -0.35 0.38 # Exact a, adot, b, bdot, g, gdot: 1.467861E-05 2.419472E-02 -5.067801E-06 -7.472202E-03 2.597067E-02 -5.868355E-03 # Covariance matrix: 2.1114E-13 -1.3172E-13 -2.0843E-14 3.0251E-14 1.9822E-13 -3.2500E-13 -1.3172E-13 1.7497E-13 3.3140E-14 -4.8935E-14 -1.9033E-14 5.2479E-13 -2.0843E-14 3.3140E-14 1.1537E-13 -2.2672E-14 1.8534E-14 1.0714E-13 3.0251E-14 -4.8935E-14 -2.2672E-14 1.9511E-14 -3.2408E-14 -1.5934E-13 1.9822E-13 -1.9033E-14 1.8534E-14 -3.2408E-14 1.7748E-12 3.4200E-13 -3.2500E-13 5.2479E-13 1.0714E-13 -1.5934E-13 3.4200E-13 1.7075E-12 # lat0 lon0 xBary yBary zBary JD0 -1.137090 -132.850931 -0.288494 -0.019214 -0.970623 2453149.855313 # Heliocentric elements and errors Epoch: 2453150.5000 = 2004/05/25 Mean Anomaly: 283.06579 +/- 0.030 Argument of Peri: 285.63639 +/- 0.041 Long of Asc Node: 43.96137 +/- 0.000 Inclination: 17.13304 +/- 0.000 Eccentricity: 0.21658240 +/- 0.0001 Semi-Major Axis: 39.57587732 +/- 0.0083 Time of Perihelion: 2472584.4588 +/- 23.6 Perihelion: 31.00443865 +/- 0.0068 Aphelion: 48.14731599 +/- 0.0102 Period (y) 248.9740 +/- 0.08 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -26.63406366 +/- 0.0013 Ecliptic Y -29.12986401 +/- 0.0014 Ecliptic Z -0.76428416 +/- 0.0000 Ecliptic XDOT 0.00229854 +/- 0.0000 Ecliptic YDOT -0.00127672 +/- 0.0000 Ecliptic ZDOT -0.00077517 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.47805522 +/- 0.0014 Geocenter to KBO 38.50514188 +/- 0.0020 # Hcoef: 7.36
The following table shows the complete astrometric record for 04KB19. 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 (04KB19) followed by the observatory code and reference code for the source of the astrometry.
2004 05 24.35457 14 57 22.96 -18 02 43.4 23.8g 04KB19 568 C~0Uqx 2004 05 24.37701 14 57 22.84 -18 02 42.8 23.6g 04KB19 568 C~0Uqx 2004 05 24.40204 14 57 22.69 -18 02 42.7 23.7g 04KB19 568 C~0Uqx 2004 05 25.36346 14 57 17.91 -18 02 25.7 04KB19 568 C~0Uqx 2004 06 10.26858 14 56 03.51 -17 58 07.5 23.2i 04KB19 568 C~0Uqx 2004 06 10.33325 14 56 03.21 -17 58 06.5 23.3i 04KB19 568 C~0Uqx 2004 06 10.40473 14 56 02.91 -17 58 05.4 23.4i 04KB19 568 C~0Uqx 2005 05 14.37712 15 03 25.16 -18 54 03.8 23.3r 04KB19 568 C~0Uqx 2005 05 14.41084 15 03 24.98 -18 54 03.3 23.0r 04KB19 568 C~0Uqx 2005 05 14.44970 15 03 24.77 -18 54 02.5 23.2r 04KB19 568 C~0Uqx 2005 07 08.30276 14 59 34.85 -18 41 02.7 22.4r 04KB19 568 C~0Uqx 2005 07 08.35417 14 59 34.72 -18 41 02.2 22.5r 04KB19 568 C~0Uqx 2006 05 26.37447 15 07 38.85 -19 39 02.4 23.4r 04KB19 568 C~0Uqx 2006 05 26.40813 15 07 38.69 -19 39 01.8 23.4r 04KB19 568 C~0Uqx 2006 05 26.44157 15 07 38.50 -19 39 01.3 23.4r 04KB19 568 C~0Uqx 2006 05 27.45215 15 07 33.29 -19 38 44.3 04KB19 568 C~0Uqx 2015 04 15.39319 16 04 30.01 -26 52 35.0 23.1R 04KB19 695 C~1RHU 2015 04 15.43094 16 04 29.86 -26 52 35.0 04KB19 695 C~1RHU 2015 04 15.46933 16 04 29.65 -26 52 35.2 04KB19 695 C~1RHU
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 0.10
2 0.0001 0.00 -0.03 0.00 0.31
3 0.0001 0.00 -0.35 0.00 -0.03
4 0.0028 0.00 0.38 0.00 0.24
5 0.0463 0.00 0.16 0.00 -0.07
6 0.0465 0.00 -0.10 0.00 -0.03
7 0.0467 0.00 0.08 0.00 0.01
8 0.9720 0.00 0.01 0.00 -0.04
9 0.9721 0.00 0.05 0.00 -0.13
10 0.9722 0.00 0.07 0.00 -0.02
11 1.1224 0.00 0.05 0.00 -0.06
12 1.1225 0.00 -0.05 0.00 0.04
13 2.0042 0.00 -0.27 0.00 -0.03
14 2.0043 0.00 -0.01 0.00 -0.00
15 2.0043 0.00 -0.21 0.00 -0.07
16 2.0071 0.00 0.03 0.00 -0.29
17 10.8913 0.00 -0.03 0.00 0.12
18 10.8914 0.00 0.30 0.00 0.10
19 10.8915 0.00 -0.22 0.00 -0.12
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.
04KB19 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.296 39.296 39.296 ecceobj 0.221 0.221 0.221 incobj 17.212 17.212 17.212 qmin 27.473 27.472 27.475 qmax 51.862 51.851 51.875 amean 39.454 39.453 39.454 amin 39.050 39.050 39.051 amax 39.955 39.954 39.955 emean 0.249 0.249 0.249 emin 0.197 0.198 0.197 emax 0.302 0.302 0.302 imean 14.175 14.174 14.176 imin 11.209 11.206 11.213 imax 16.874 16.875 16.874 excite_mean 0.351 0.351 0.351 fracstop 1.000 1.000 1.000 cjmean 2.911 2.911 2.911 libcent 0 179.2 179.3 179.4 libamp 0 58.9 59.0 59.5 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 270.2 270.2 270.3 kozaiamp 52.5 52.5 52.5