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: 04KE19 # Created Sat Apr 20 01:11:51 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 25 observations of 25 # Arc: 16.08y # First observation: 2004/05/24 # Last observation: 2020/06/23 # Chi-squared of fit: 14.09 DOF: 44 RMS: 0.13 # Min/Max residuals: -0.36 0.25 # Exact a, adot, b, bdot, g, gdot: 1.548881E-05 2.363922E-02 8.140119E-07 2.027799E-04 2.404842E-02 5.260883E-04 # Covariance matrix: 1.5079E-13 -4.1107E-14 1.9159E-16 -3.0955E-16 7.8635E-14 -9.5442E-14 -4.1107E-14 2.7551E-14 -2.3824E-16 2.3875E-16 -1.9696E-14 7.4311E-14 1.9159E-16 -2.3824E-16 1.0728E-13 -9.1122E-15 -1.2284E-15 -5.9124E-16 -3.0955E-16 2.3875E-16 -9.1122E-15 1.6723E-15 -3.7880E-16 6.9848E-16 7.8635E-14 -1.9696E-14 -1.2284E-15 -3.7880E-16 7.5840E-13 -1.0549E-13 -9.5442E-14 7.4311E-14 -5.9124E-16 6.9848E-16 -1.0549E-13 2.1658E-13 # lat0 lon0 xBary yBary zBary JD0 -1.092627 -132.961632 -0.290369 -0.018450 -0.970079 2453149.855313 # Heliocentric elements and errors Epoch: 2453150.5000 = 2004/05/25 Mean Anomaly: 33.50265 +/- 0.059 Argument of Peri: 258.07393 +/- 0.066 Long of Asc Node: 292.19329 +/- 0.004 Inclination: 1.18014 +/- 0.000 Eccentricity: 0.05450909 +/- 0.0001 Semi-Major Axis: 44.53627680 +/- 0.0070 Time of Perihelion: 2443047.6010 +/- 18.0 Perihelion: 42.10864467 +/- 0.0079 Aphelion: 46.96390894 +/- 0.0086 Period (y) 297.2207 +/- 0.07 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -28.78605555 +/- 0.0010 Ecliptic Y -31.33166775 +/- 0.0011 Ecliptic Z -0.79287019 +/- 0.0000 Ecliptic XDOT 0.00192571 +/- 0.0000 Ecliptic YDOT -0.00188523 +/- 0.0000 Ecliptic ZDOT 0.00002206 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.55510909 +/- 0.0011 Geocenter to KBO 41.58279434 +/- 0.0015 # Hcoef: 6.38
The following table shows the complete astrometric record for 04KE19. 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 (04KE19) followed by the observatory code and reference code for the source of the astrometry.
2004 05 24.35457 14 56 59.38 -17 58 16.5 23.2g 04KE19 568 C~0VDq 2004 05 24.37701 14 56 59.28 -17 58 16.0 23.2g 04KE19 568 C~0VDq 2004 05 24.40204 14 56 59.17 -17 58 15.5 23.1g 04KE19 568 C~0VDq 2004 05 25.36346 14 56 54.82 -17 57 56.4 04KE19 568 C~0VDq 2004 06 10.26858 14 55 48.07 -17 52 59.2 22.3i 04KE19 568 C~0VDq 2004 06 10.33325 14 55 47.82 -17 52 58.2 22.6i 04KE19 568 C~0VDq 2004 06 10.40473 14 55 47.54 -17 52 56.9 04KE19 568 C~0VDq 2005 05 14.37712 15 03 16.86 -18 23 51.1 22.6r 04KE19 568 C~0VDq 2005 05 14.41084 15 03 16.69 -18 23 50.4 22.6r 04KE19 568 C~0VDq 2005 05 14.44970 15 03 16.49 -18 23 49.7 22.9r 04KE19 568 C~0VDq 2005 08 02.02478 14 59 29.28 -18 06 35.4 04KE19 309 C~0VDq 2005 08 03.02019 14 59 29.52 -18 06 34.7 04KE19 309 C~0VDq 2008 05 04.36435 15 20 39.77 -19 29 30.9 04KE19 695 C~0VDq 2008 05 04.40196 15 20 39.58 -19 29 30.2 04KE19 695 C~0VDq 2008 05 05.37851 15 20 34.91 -19 29 13.0 04KE19 695 C~0VDq 2008 06 07.05484 15 18 01.25 -19 19 23.7 04KE19 807 C~0VDq 2008 06 07.22863 15 18 00.49 -19 19 20.8 04KE19 807 C~0VDq 2015 06 21.18262 15 55 59.55 -21 20 02.0 04KE19 W84 C~2fbn 2015 06 21.25157 15 55 59.25 -21 20 01.3 23.2V 04KE19 W84 C~2fbn 2015 06 22.07706 15 55 55.78 -21 19 50.4 04KE19 W84 C~2fbn 2016 05 29.32572 16 03 19.709 -21 40 00.24 04KE19 G37 C~2bkb 2016 05 29.38104 16 03 19.432 -21 39 59.27 04KE19 G37 C~2bkb 2020 06 23.35061 16 23 57.734 -22 27 10.29 22.4w 04KE19 F51 C~3xp4 2020 06 23.36032 16 23 57.686 -22 27 09.89 22.6w 04KE19 F51 C~3xp4 2020 06 23.37021 16 23 57.649 -22 27 09.88 22.4w 04KE19 F51 C~3xp4
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 -0.03 0.00 -0.14
2 0.0001 0.00 0.03 0.00 -0.08
3 0.0001 0.00 0.11 0.00 -0.08
4 0.0028 0.00 0.02 0.00 0.01
5 0.0463 0.00 0.05 0.00 0.19
6 0.0465 0.00 0.10 0.00 0.07
7 0.0467 0.00 0.09 0.00 0.13
8 0.9720 0.00 0.03 0.00 0.22
9 0.9721 0.00 -0.05 0.00 0.25
10 0.9722 0.00 -0.22 0.00 0.18
11 1.1901 0.00 -0.03 0.00 -0.10
12 1.1928 0.00 -0.02 0.00 -0.08
13 3.9453 0.00 0.05 0.00 -0.24
14 3.9454 0.00 -0.05 0.00 -0.21
15 3.9480 0.00 0.12 0.00 -0.36
16 4.0375 0.00 -0.21 0.00 0.08
17 4.0380 0.00 -0.20 0.00 0.00
18 11.0741 0.00 0.19 0.00 0.13
19 11.0743 0.00 0.12 0.00 -0.09
20 11.0766 0.00 -0.14 0.00 0.01
21 12.0136 0.00 0.01 0.00 -0.05
22 12.0138 0.00 -0.00 0.00 0.14
23 16.0821 0.00 -0.03 0.00 -0.14
24 16.0822 0.00 -0.09 0.00 0.15
25 16.0822 0.00 0.03 0.00 0.06
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.
04KE19 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.086 44.086 44.086 ecceobj 0.045 0.045 0.045 incobj 1.180 1.180 1.180 qmin 41.465 41.475 41.477 qmax 47.562 47.559 47.560 amean 44.419 44.419 44.419 amin 44.072 44.070 44.070 amax 44.778 44.773 44.779 emean 0.048 0.048 0.048 emin 0.033 0.033 0.033 emax 0.062 0.062 0.062 imean 2.941 2.941 2.941 imin 2.297 2.297 2.297 imax 3.455 3.455 3.455 excite_mean 0.071 0.071 0.071 fracstop 1.000 1.000 1.000 cjmean 3.100 3.100 3.100 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 174.2 174.2 174.3 kozaiamp 179.9 180.0 180.0