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: 620502
# Created Wed May 8 01:09:31 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 26 observations of 26
# Arc: 19.13y
# First observation: 2004/04/26
# Last observation: 2023/06/15
# Chi-squared of fit: 58.75 DOF: 46 RMS: 0.27
# Min/Max residuals: -0.79 0.41
# Exact a, adot, b, bdot, g, gdot:
1.580701E-05 2.798679E-02 3.305440E-06 9.175194E-04 2.595871E-02 -2.108146E-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
1.284964 -152.433708 -0.157759 0.022309 -0.991875 2453121.838433
# Heliocentric elements and errors
Epoch: 2453122.5000 = 2004/04/27
Mean Anomaly: 342.63447 +/- 0.000
Argument of Peri: 59.45142 +/- 0.000
Long of Asc Node: 173.93700 +/- 0.000
Inclination: 2.24814 +/- 0.000
Eccentricity: 0.18758838 +/- 0.0000
Semi-Major Axis: 47.88909725 +/- 0.0000
Time of Perihelion: 2458961.5058 +/- 0.0
Perihelion: 38.90565917 +/- 0.0000
Aphelion: 56.87253533 +/- 0.0000
Period (y) 331.4081 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -34.95092699 +/- 0.0000
Ecliptic Y -18.42030638 +/- 0.0000
Ecliptic Z 0.86401493 +/- 0.0000
Ecliptic XDOT 0.00156198 +/- 0.0000
Ecliptic YDOT -0.00251972 +/- 0.0000
Ecliptic ZDOT 0.00009189 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 39.51740248 +/- 0.0000
Geocenter to KBO 38.52280024 +/- 0.0000
# Hcoef: 6.56
The following table shows the complete astrometric record for 620502. 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 (620502) followed by the observatory code and reference code for the source of the astrometry.
2004 04 26.33769 13 44 14.36 -09 24 28.1 22.9g 620502 568 C~0X5W 2004 04 26.36260 13 44 14.23 -09 24 27.6 22.9g 620502 568 C~0X5W 2004 04 26.38527 13 44 14.13 -09 24 26.8 22.7g 620502 568 C~0X5W 2004 04 27.33358 13 44 09.66 -09 24 01.0 23.3g 620502 568 C~0X5W 2004 06 20.28773 13 41 00.95 -09 06 43.0 21.8i 620502 568 C~0X5W 2004 06 20.34052 13 41 00.86 -09 06 42.5 22.2i 620502 568 C~0X5W 2004 06 20.38921 13 41 00.78 -09 06 42.2 22.7i 620502 568 C~0X5W 2005 05 04.35415 13 49 48.89 -09 52 25.2 22.7r 620502 568 C~0X5W 2005 05 04.38840 13 49 48.72 -09 52 24.5 23.2r 620502 568 C~0X5W 2005 05 04.43239 13 49 48.52 -09 52 23.2 22.7r 620502 568 C~0X5W 2005 05 05.39915 13 49 44.08 -09 51 58.8 22.1r 620502 568 C~0X5W 2006 01 28.51943 14 01 06.78 -10 53 53.1 620502 675 C~0X5W 2006 01 29.52256 14 01 07.19 -10 53 52.1 620502 675 C~0X5W 2006 01 29.52671 14 01 07.20 -10 53 52.2 620502 675 C~0X5W 2006 05 02.20792 13 56 13.40 -10 24 32.7 620502 695 C~0X5W 2006 05 02.28948 13 56 13.03 -10 24 30.8 620502 695 C~0X5W 2009 06 21.22649 14 11 51.84 -11 39 12.7 620502 695 C~0X5W 2009 06 22.16461 14 11 49.71 -11 39 03.0 620502 695 C~0X5W 2014 05 04.22485 14 47 14.97 -14 16 30.9 22.4V 620502 W84 C~1Axn 2014 05 04.26010 14 47 14.79 -14 16 30.0 620502 W84 C~1Axn 2014 05 04.29457 14 47 14.62 -14 16 29.1 620502 W84 C~1Axn 2018 05 19.195050 15 12 32.75 -15 54 06.6 22.2G 620502 705 C~2rXg 2018 05 19.286930 15 12 32.26 -15 54 04.6 21.5G 620502 705 C~2rXg 2018 05 20.184970 15 12 27.76 -15 53 46.8 22.0G 620502 705 C~2rXg 2023 06 15.209800 15 44 09.938 -17 38 44.34 22.2G 620502 G37 C~6r2R 2023 06 15.253540 15 44 09.742 -17 38 43.65 620502 G37 C~6r2R
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 -0.62
2 0.0001 0.00 -0.12 0.00 -0.79
3 0.0001 0.00 0.02 0.00 -0.60
4 0.0027 0.00 -0.13 0.00 -0.31
5 0.1504 0.00 -0.34 0.00 0.07
6 0.1506 0.00 -0.31 0.00 0.13
7 0.1507 0.00 -0.24 0.00 0.03
8 1.0213 0.00 0.33 0.00 0.41
9 1.0214 0.00 0.20 0.00 0.23
10 1.0215 0.00 0.30 0.00 0.40
11 1.0241 0.00 0.35 0.00 0.03
12 1.7582 0.00 -0.30 0.00 0.07
13 1.7609 0.00 -0.12 0.00 0.41
14 1.7610 0.00 0.02 0.00 0.31
15 2.0147 0.00 -0.12 0.00 0.20
16 2.0149 0.00 0.21 0.00 -0.01
17 5.1523 0.00 -0.21 0.00 0.35
18 5.1549 0.00 0.33 0.00 0.27
19 10.0202 0.00 0.08 0.00 -0.19
20 10.0203 0.00 0.08 0.00 -0.11
21 10.0204 0.00 0.16 0.00 -0.01
22 14.0612 0.00 -0.04 0.00 -0.12
23 14.0615 0.00 -0.32 0.00 0.04
24 14.0639 0.00 -0.09 0.00 -0.09
25 19.1345 0.00 -0.00 0.00 -0.06
26 19.1346 0.00 0.12 0.00 0.03
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.
620502 quality flag:3 Type: 2:1E 2:1E 2:1E axisobj 47.258 47.258 47.259 ecceobj 0.178 0.178 0.178 incobj 2.257 2.257 2.257 qmin 37.598 37.561 37.520 qmax 58.743 58.787 58.728 amean 47.796 47.796 47.796 amin 47.256 47.252 47.238 amax 48.430 48.433 48.425 emean 0.193 0.193 0.193 emin 0.173 0.172 0.172 emax 0.214 0.214 0.213 imean 2.526 2.571 2.455 imin 2.152 2.154 2.047 imax 2.980 2.898 2.930 excite_mean 0.198 0.198 0.198 fracstop 1.000 1.000 1.000 cjmean 3.100 3.100 3.100 libcent 0 253.2 252.9 254.3 libamp 0 66.0 67.1 65.2 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 146.1 181.4 150.7 kozaiamp 97.5 125.9 98.0