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: 385445
# Created Sun Dec 22 02:07:04 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 22 observations of 22
# Arc: 20.04y
# First observation: 2003/08/24
# Last observation: 2023/09/06
# Chi-squared of fit: 49.50 DOF: 38 RMS: 0.27
# Min/Max residuals: -0.48 0.54
# Exact a, adot, b, bdot, g, gdot:
1.487092E-05 2.294832E-02 1.770041E-06 1.311219E-03 2.454364E-02 3.054696E-03
# Covariance matrix:
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
# lat0 lon0 xBary yBary zBary JD0
1.698883 -46.737991 -0.297870 0.028822 -0.970324 2452875.529113
# Heliocentric elements and errors
Epoch: 2452876.5000 = 2003/08/25
Mean Anomaly: 106.20810 +/- 0.000
Argument of Peri: 264.91888 +/- 0.000
Long of Asc Node: 286.86441 +/- 0.000
Inclination: 3.67571 +/- 0.000
Eccentricity: 0.15249410 +/- 0.0000
Semi-Major Axis: 39.25885010 +/- 0.0000
Time of Perihelion: 2426369.5403 +/- 0.0
Perihelion: 33.27210698 +/- 0.0000
Aphelion: 45.24559322 +/- 0.0000
Period (y) 245.9884 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 28.79070567 +/- 0.0000
Ecliptic Y -30.15641434 +/- 0.0000
Ecliptic Z 1.20798962 +/- 0.0000
Ecliptic XDOT 0.00208938 +/- 0.0000
Ecliptic YDOT 0.00150379 +/- 0.0000
Ecliptic ZDOT 0.00015648 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.71050543 +/- 0.0000
Geocenter to KBO 40.74370516 +/- 0.0000
# Hcoef: 6.76
The following table shows the complete astrometric record for 385445. 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 (385445) followed by the observatory code and reference code for the source of the astrometry.
2003 08 24.02837 21 00 54.41 -15 12 33.2 21.9R 385445 807 Ci4137 2003 08 25.03682 21 00 49.81 -15 12 53.0 385445 807 Ci4137 2003 08 25.14609 21 00 49.31 -15 12 54.9 385445 807 Ci4137 2003 10 01.25144 20 58 36.07 -15 22 49.7 22.9R 385445 568 Ci6964 2003 10 01.34012 20 58 35.83 -15 22 50.8 385445 568 Ci6964 2003 10 02.29552 20 58 33.66 -15 23 01.2 385445 568 Ci6964 2003 11 20.07602 20 58 34.53 -15 24 23.1 23.0R 385445 695 Cj4699 2003 11 21.07725 20 58 36.92 -15 24 14.8 385445 695 Cj4699 2004 05 28.23668 21 11 28.28 -14 24 19.8 22.3R 385445 304 Cl4360 2004 05 28.29377 21 11 28.23 -14 24 19.9 385445 304 Cl4360 2004 08 23.12705 21 06 01.04 -14 45 49.2 23.0R 385445 304 Cl4360 2004 08 23.26447 21 06 00.41 -14 45 51.6 385445 304 Cl4360 2005 12 01.08402 21 08 58.07 -14 30 46.8 23.2R 385445 695 Cp9888 2005 12 01.11349 21 08 58.17 -14 30 46.3 385445 695 Cp9888 2005 12 02.07363 21 09 01.19 -14 30 34.1 385445 695 Cp9888 2006 04 26.36832 21 21 01.81 -13 33 30.6 21.9R 385445 807 Cr3580 2006 04 27.35236 21 21 03.74 -13 33 18.0 385445 807 Cr3580 2006 04 28.36565 21 21 05.61 -13 33 05.6 385445 807 Cr3580 2013 10 06.19947 21 47 02.83 -10 51 14.1 23.1R 385445 695 C~0zdV 2013 10 07.17036 21 47 00.23 -10 51 30.1 385445 695 C~0zdV 2023 09 06.215780 22 33 57.010 -05 53 06.84 23.4G 385445 G37 C~7LbS 2023 09 06.254580 22 33 56.842 -05 53 07.88 385445 G37 C~7LbS
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 -0.19
2 0.0028 0.00 0.05 0.00 -0.32
3 0.0031 0.00 0.12 0.00 -0.08
4 0.1046 0.00 0.44 0.00 0.19
5 0.1049 0.00 0.05 0.00 0.09
6 0.1075 0.00 0.15 0.00 0.25
7 0.2411 0.00 -0.17 0.00 -0.02
8 0.2438 0.00 -0.48 0.00 -0.13
9 0.7617 0.00 0.22 0.00 0.49
10 0.7618 0.00 0.54 0.00 0.53
11 0.9996 0.00 -0.37 0.00 -0.29
12 1.0000 0.00 -0.21 0.00 0.06
13 2.2726 0.00 0.15 0.00 -0.29
14 2.2726 0.00 0.29 0.00 -0.15
15 2.2753 0.00 -0.21 0.00 0.27
16 2.6731 0.00 -0.17 0.00 -0.42
17 2.6758 0.00 -0.07 0.00 -0.23
18 2.6785 0.00 -0.33 0.00 -0.20
19 10.1196 0.00 -0.16 0.00 0.51
20 10.1222 0.00 0.16 0.00 0.22
21 20.0361 0.00 0.00 0.00 -0.12
22 20.0362 0.00 0.05 0.00 -0.16
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.
385445 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.456 39.456 39.456 ecceobj 0.147 0.147 0.147 incobj 3.669 3.669 3.669 qmin 32.736 32.737 32.735 qmax 46.854 46.861 46.844 amean 39.458 39.458 39.458 amin 38.951 38.956 38.954 amax 40.008 40.013 40.002 emean 0.153 0.153 0.153 emin 0.134 0.134 0.133 emax 0.171 0.172 0.171 imean 5.578 5.578 5.577 imin 4.557 4.556 4.559 imax 6.273 6.274 6.273 excite_mean 0.181 0.181 0.181 fracstop 1.000 1.000 1.000 cjmean 3.014 3.014 3.014 libcent 0 180.2 180.8 179.8 libamp 0 114.2 114.8 114.4 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 181.3 181.4 181.1 kozaiamp 180.0 179.9 180.0