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: 04KD19 # Created Fri Apr 26 01:11:50 2024 # Orbit generated from Bernstein formalism # Fitting 14 observations of 14 # Arc: 3.95y # First observation: 2004/05/24 # Last observation: 2008/05/05 Preliminary a, adot, b, bdot, g, gdot: -0.000066 0.026474 0.000002 -0.000646 0.026624 0.000000 # Chi-squared of fit: 8.53 DOF: 22 RMS: 0.14 # Min/Max residuals: -0.36 0.27 # Exact a, adot, b, bdot, g, gdot: 1.624492E-05 2.640213E-02 -5.085611E-07 -6.432622E-04 2.640263E-02 3.082674E-05 # Covariance matrix: 3.4739E-13 -3.6287E-13 -3.0008E-15 6.3187E-15 -5.1967E-14 -2.4944E-12 -3.6287E-13 6.6108E-13 6.2351E-15 -1.3763E-14 2.0858E-13 5.4387E-12 -3.0008E-15 6.2351E-15 2.1613E-13 -8.5778E-14 1.6958E-16 5.5211E-14 6.3187E-15 -1.3763E-14 -8.5778E-14 6.6530E-14 -6.8530E-15 -1.2764E-13 -5.1967E-14 2.0858E-13 1.6958E-16 -6.8530E-15 1.0334E-12 2.7616E-12 -2.4944E-12 5.4387E-12 5.5211E-14 -1.2764E-13 2.7616E-12 5.0485E-11 # lat0 lon0 xBary yBary zBary JD0 -1.652575 -126.333974 -0.176730 -0.028709 -0.996825 2453149.872103 # Heliocentric elements and errors Epoch: 2453140.5000 = 2004/05/15 Mean Anomaly: 147.80191 +/- 0.881 Argument of Peri: 80.61415 +/- 0.878 Long of Asc Node: 4.54646 +/- 0.012 Inclination: 2.12100 +/- 0.000 Eccentricity: 0.01565480 +/- 0.0002 Semi-Major Axis: 38.36203690 +/- 0.0056 Time of Perihelion: 2417509.4628 +/- 212.2 Perihelion: 37.76148699 +/- 0.0082 Aphelion: 38.96258682 +/- 0.0084 Period (y) 237.6078 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -22.88318668 +/- 0.0009 Ecliptic Y -31.40511602 +/- 0.0012 Ecliptic Z -1.09226204 +/- 0.0000 Ecliptic XDOT 0.00220208 +/- 0.0000 Ecliptic YDOT -0.00163011 +/- 0.0000 Ecliptic ZDOT -0.00006665 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.87305726 +/- 0.0011 Geocenter to KBO 37.87501792 +/- 0.0015 # Hcoef: 7.31
The following table shows the complete astrometric record for 04KD19. 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 (04KD19) followed by the observatory code and reference code for the source of the astrometry.
2004 05 24.37136 15 23 22.75 -20 17 22.7 23.6g 04KD19 568 C~0V8G 2004 05 24.39644 15 23 22.61 -20 17 22.3 23.6g 04KD19 568 C~0V8G 2004 05 24.41896 15 23 22.50 -20 17 21.8 23.5g 04KD19 568 C~0V8G 2004 05 25.38026 15 23 17.47 -20 17 03.4 23.5g 04KD19 568 C~0V8G 2005 05 14.40334 15 30 31.29 -20 45 05.1 22.9r 04KD19 568 C~0V8G 2005 05 14.43701 15 30 31.10 -20 45 04.6 23.0r 04KD19 568 C~0V8G 2005 05 14.47570 15 30 30.89 -20 45 03.7 22.9r 04KD19 568 C~0V8G 2005 05 17.38052 15 30 15.26 -20 44 10.5 23.6r 04KD19 568 C~0V8G 2005 08 02.03428 15 25 41.34 -20 26 24.2 04KD19 309 C~0V8G 2005 08 02.03825 15 25 41.34 -20 26 24.4 04KD19 309 C~0V8G 2006 05 02.42422 15 37 52.48 -21 12 08.2 04KD19 695 C~0V8G 2006 05 02.46723 15 37 52.26 -21 12 07.4 22.9r 04KD19 695 C~0V8G 2008 05 05.40969 15 50 12.42 -21 55 30.9 04KD19 695 C~0V8G 2008 05 05.44037 15 50 12.26 -21 55 30.5 04KD19 695 C~0V8G
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 0.03
2 0.0001 -2.01 -0.15 -0.11 -0.07
3 0.0001 -3.63 -0.02 -0.01 0.03
4 0.0028 -76.75 0.10 0.01 -0.05
5 0.9720 6246.02 0.17 -130.38 0.21
6 0.9721 6243.31 0.12 -130.54 0.08
7 0.9722 6240.23 0.10 -130.37 0.27
8 0.9802 6014.42 0.10 -131.55 0.02
9 1.1900 2022.45 -0.06 -37.97 0.06
10 1.1901 2022.50 0.02 -38.16 -0.14
11 1.9385 12647.53 -0.20 -255.37 -0.36
12 1.9387 12644.34 -0.14 -255.29 -0.25
13 3.9481 23372.71 0.00 -526.10 0.11
14 3.9482 23370.42 0.06 -526.18 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.
04KD19 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 38.053 38.070 38.037 ecceobj 0.022 0.021 0.022 incobj 2.129 2.129 2.129 qmin 37.029 37.005 36.998 qmax 39.778 39.731 39.743 amean 38.302 38.319 38.286 amin 38.022 38.036 38.006 amax 38.588 38.602 38.570 emean 0.018 0.018 0.018 emin 0.005 0.006 0.006 emax 0.031 0.030 0.031 imean 4.393 4.390 4.395 imin 2.518 2.520 2.515 imax 5.747 5.769 5.725 excite_mean 0.079 0.079 0.079 fracstop 1.000 1.000 1.000 cjmean 3.035 3.035 3.035 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 180.4 180.3 180.2 kozaiamp 180.0 179.9 180.0