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: 385528
# Created Sun Apr 27 01:07:04 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 25 observations of 25
# Arc: 17.95y
# First observation: 2004/07/22
# Last observation: 2022/07/04
# Chi-squared of fit: 29.66 DOF: 44 RMS: 0.19
# Min/Max residuals: -0.40 0.73
# Exact a, adot, b, bdot, g, gdot:
1.893968E-05 3.260872E-02 1.863482E-06 3.936514E-03 2.758678E-02 -1.122920E-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
0.767801 -68.854052 -0.157838 0.013548 -1.006914 2453208.943373
# Heliocentric elements and errors
Epoch: 2453208.5000 = 2004/07/22
Mean Anomaly: 356.97709 +/- 0.000
Argument of Peri: 12.66413 +/- 0.000
Long of Asc Node: 285.22371 +/- 0.000
Inclination: 6.92906 +/- 0.000
Eccentricity: 0.33656068 +/- 0.0000
Semi-Major Axis: 56.06260034 +/- 0.0000
Time of Perihelion: 2454495.9523 +/- 0.0
Perihelion: 37.19413347 +/- 0.0000
Aphelion: 74.93106721 +/- 0.0000
Period (y) 419.7764 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 13.58261043 +/- 0.0000
Ecliptic Y -34.68590361 +/- 0.0000
Ecliptic Z 0.48585035 +/- 0.0000
Ecliptic XDOT 0.00297414 +/- 0.0000
Ecliptic YDOT 0.00126929 +/- 0.0000
Ecliptic ZDOT 0.00038926 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 37.25368037 +/- 0.0000
Geocenter to KBO 36.24930019 +/- 0.0000
# Hcoef: 7.58
The following table shows the complete astrometric record for 385528. 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 (385528) followed by the observatory code and reference code for the source of the astrometry.
2004 07 22.44263 19 30 55.70 -21 01 05.6 22.9g 385528 568 C~0X5X 2004 07 22.47042 19 30 55.55 -21 01 05.9 23.4g 385528 568 C~0X5X 2004 07 22.49397 19 30 55.41 -21 01 06.1 23.3g 385528 568 C~0X5X 2004 07 23.39510 19 30 50.53 -21 01 14.8 385528 568 C~0X5X 2004 09 11.25810 19 27 23.98 -21 07 20.7 23.3i 385528 568 C~0X5X 2004 09 11.30795 19 27 23.86 -21 07 20.9 23.7i 385528 568 C~0X5X 2004 09 11.35372 19 27 23.77 -21 07 21.2 23.2i 385528 568 C~0X5X 2005 07 10.30811 19 39 47.79 -20 27 35.5 385528 675 C~0X5X 2005 07 10.33982 19 39 47.61 -20 27 36.1 385528 675 C~0X5X 2005 07 10.37442 19 39 47.43 -20 27 36.4 385528 675 C~0X5X 2005 08 03.12577 19 37 39.10 -20 31 50.8 385528 309 C~0X5X 2005 08 03.32006 19 37 38.07 -20 31 52.8 385528 309 C~0X5X 2005 08 03.32420 19 37 38.07 -20 31 52.8 385528 309 C~0X5X 2006 07 26.24105 19 46 04.12 -19 57 51.6 385528 675 C~0X5X 2006 07 26.32020 19 46 03.71 -19 57 52.5 385528 675 C~0X5X 2007 05 16.41328 19 58 47.17 -19 13 48.8 385528 675 C~0X5X 2007 05 16.44784 19 58 47.12 -19 13 49.1 385528 675 C~0X5X 2008 05 03.44515 20 06 26.76 -18 38 55.2 385528 695 C~0X5X 2008 05 04.45459 20 06 26.45 -18 38 51.3 385528 695 C~0X5X 2008 05 04.45855 20 06 26.45 -18 38 51.0 385528 695 C~0X5X 2013 10 05.11292 20 33 47.71 -15 55 35.4 23.5R 385528 695 C~0zdZ 2013 10 06.10743 20 33 46.40 -15 55 41.9 385528 695 C~0zdZ 2013 10 07.12304 20 33 45.15 -15 55 49.6 385528 695 C~0zdZ 2022 07 04.365230 21 42 26.192 -09 05 29.67 23.3G 385528 G37 C~5iWv 2022 07 04.430350 21 42 25.947 -09 05 30.11 385528 G37 C~5iWv
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 -0.07 0.00 0.07
2 0.0001 0.00 -0.01 0.00 0.04
3 0.0001 0.00 -0.16 0.00 0.07
4 0.0026 0.00 -0.11 0.00 0.20
5 0.1391 0.00 0.12 0.00 0.21
6 0.1393 0.00 0.03 0.00 0.19
7 0.1394 0.00 0.24 0.00 0.04
8 0.9661 0.00 0.07 0.00 -0.14
9 0.9662 0.00 0.01 0.00 -0.40
10 0.9663 0.00 0.20 0.00 -0.33
11 1.0313 0.00 -0.14 0.00 0.03
12 1.0318 0.00 -0.35 0.00 0.00
13 1.0318 0.00 -0.03 0.00 0.04
14 2.0090 0.00 -0.08 0.00 -0.14
15 2.0092 0.00 0.29 0.00 -0.10
16 2.8144 0.00 0.10 0.00 -0.00
17 2.8145 0.00 0.30 0.00 -0.27
18 3.7810 0.00 -0.11 0.00 -0.09
19 3.7837 0.00 -0.07 0.00 -0.09
20 3.7838 0.00 -0.05 0.00 0.20
21 9.2038 0.00 -0.11 0.00 0.15
22 9.2065 0.00 -0.01 0.00 0.73
23 9.2093 0.00 -0.15 0.00 -0.09
24 17.9491 0.00 0.19 0.00 -0.28
25 17.9493 0.00 -0.08 0.00 -0.02
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.
385528 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 56.182 56.182 56.182 ecceobj 0.339 0.338 0.339 incobj 6.928 6.928 6.928 qmin 36.367 36.150 36.308 qmax 77.266 77.243 76.969 amean 56.230 56.218 56.161 amin 55.543 55.437 55.445 amax 57.104 57.106 57.079 emean 0.340 0.340 0.337 emin 0.327 0.325 0.325 emax 0.353 0.356 0.352 imean 8.439 8.241 8.213 imin 7.810 7.749 7.600 imax 9.053 8.760 8.819 excite_mean 0.370 0.369 0.366 fracstop 1.000 1.000 1.000 cjmean 3.078 3.078 3.080 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 177.1 173.3 174.3 kozaiamp 180.0 180.0 179.9