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: 04DM64
# Created Sun Dec 22 02:08:36 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 19 observations of 19
# Arc: 20.19y
# First observation: 2004/02/26
# Last observation: 2024/05/04
# Chi-squared of fit: 33.27 DOF: 32 RMS: 0.23
# Min/Max residuals: -0.63 0.83
# Exact a, adot, b, bdot, g, gdot:
1.710260E-05 2.470739E-02 -6.823246E-07 -1.361345E-03 2.459594E-02 -2.571991E-03
# Covariance matrix:
3.4167E-11 -4.9131E-12 -2.5540E-13 2.4276E-13 2.4437E-11 -8.5470E-12
-4.9131E-12 7.1507E-13 3.8638E-14 -3.5478E-14 -3.5100E-12 1.2458E-12
-2.5540E-13 3.8638E-14 3.6663E-13 -2.5714E-14 -1.7719E-13 6.7459E-14
2.4276E-13 -3.5478E-14 -2.5714E-14 3.9966E-15 1.7390E-13 -6.2000E-14
2.4437E-11 -3.5100E-12 -1.7719E-13 1.7390E-13 1.7774E-11 -6.1369E-12
-8.5470E-12 1.2458E-12 6.7459E-14 -6.2000E-14 -6.1369E-12 2.1773E-12
# lat0 lon0 xBary yBary zBary JD0
1.853129 -178.991179 0.399198 0.029196 -0.900818 2453061.893113
# Heliocentric elements and errors
Epoch: 2453062.5000 = 2004/02/27
Mean Anomaly: 312.81557 +/- 149.764
Argument of Peri: 210.14529 +/- 0.007
Long of Asc Node: 30.45888 +/- 0.001
Inclination: 3.62141 +/- 0.000
Eccentricity: 0.13794847 +/- 0.0038
Semi-Major Axis: 45.27466797 +/- 0.0327
Time of Perihelion: 2467646.5304 +/- 46290.0
Perihelion: 39.02909660 +/- 0.1728
Aphelion: 51.52023935 +/- 0.1745
Period (y) 304.6429 +/- 0.33
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -41.54136304 +/- 0.0170
Ecliptic Y -0.33040368 +/- 0.0003
Ecliptic Z 1.31474273 +/- 0.0006
Ecliptic XDOT 0.00032595 +/- 0.0000
Ecliptic YDOT -0.00275156 +/- 0.0000
Ecliptic ZDOT -0.00016057 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.56354857 +/- 0.0170
Geocenter to KBO 40.65720795 +/- 0.0170
# Hcoef: 6.89
The following table shows the complete astrometric record for 04DM64. 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 (04DM64) followed by the observatory code and reference code for the source of the astrometry.
2004 02 26.39237 12 06 39.05 +01 17 56.3 22.7R 04DM64 695 Ck0899 2004 02 26.46910 12 06 38.74 +01 17 58.3 04DM64 695 Ck0899 2004 02 27.45149 12 06 34.76 +01 18 25.0 04DM64 695 Ck0899 2004 03 15.24476 12 05 22.15 +01 26 16.3 22.6R 04DM64 695 Ck4349 2004 03 15.33224 12 05 21.74 +01 26 19.0 04DM64 695 Ck4349 2004 07 14.99875 12 01 41.48 +01 44 33.1 21.9R 04DM64 807 Cl0711 2004 07 15.98770 12 01 44.28 +01 44 12.3 04DM64 807 Cl0711 2004 07 16.03261 12 01 44.40 +01 44 11.2 04DM64 807 Cl0711 2005 02 09.41118 12 12 42.96 +00 33 09.5 23.4R 04DM64 688 C~2i4E 2005 02 09.48756 12 12 42.66 +00 33 10.9 04DM64 688 C~2i4E 2013 03 12.29804 12 52 29.38 -04 26 02.2 22.7R 04DM64 G37 C~2i4E 2013 03 12.29974 12 52 29.37 -04 26 01.8 22.6R 04DM64 695 C~2i4E 2013 03 12.35299 12 52 29.16 -04 26 00.7 04DM64 695 C~2i4E 2013 03 12.43250 12 52 28.80 -04 25 58.7 04DM64 G37 C~2i4E 2015 03 23.31780 13 02 30.59 -05 40 29.5 22.6R 04DM64 695 C~3iJw 2015 03 23.38172 13 02 30.31 -05 40 27.8 04DM64 695 C~3iJw 2024 05 04.286200 13 49 40.348 -11 15 05.73 23.0G 04DM64 G37 C~82lz 2024 05 04.318220 13 49 40.199 -11 15 04.82 04DM64 G37 C~82lz 2024 05 04.350240 13 49 40.049 -11 15 03.99 04DM64 G37 C~82lz
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 -0.25 0.00 0.06
2 0.0002 0.00 -0.17 0.00 0.02
3 0.0029 0.00 -0.11 0.00 0.38
4 0.0489 0.00 -0.03 0.00 -0.07
5 0.0491 0.00 -0.18 0.00 0.11
6 0.3822 0.00 -0.37 0.00 -0.63
7 0.3849 0.00 0.13 0.00 -0.11
8 0.3851 0.00 0.05 0.00 -0.23
9 0.9556 0.00 0.83 0.00 0.14
10 0.9558 0.00 -0.04 0.00 -0.09
11 9.0401 0.00 -0.03 0.00 0.12
12 9.0401 0.00 -0.07 0.00 0.46
13 9.0403 0.00 0.20 0.00 0.17
14 9.0405 0.00 -0.07 0.00 0.09
15 11.0689 0.00 -0.02 0.00 -0.07
16 11.0691 0.00 0.16 0.00 -0.11
17 20.1859 0.00 -0.07 0.00 -0.18
18 20.1860 0.00 -0.02 0.00 -0.06
19 20.1861 0.00 0.01 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.
04DM64 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.732 44.732 44.732 ecceobj 0.132 0.132 0.132 incobj 3.637 3.637 3.637 qmin 38.356 38.391 38.359 qmax 51.954 52.062 51.989 amean 45.032 45.031 45.032 amin 44.646 44.646 44.642 amax 45.448 45.461 45.455 emean 0.129 0.129 0.129 emin 0.113 0.113 0.113 emax 0.144 0.145 0.144 imean 3.196 3.196 3.195 imin 2.448 2.449 2.449 imax 3.812 3.814 3.812 excite_mean 0.141 0.141 0.141 fracstop 1.000 1.000 1.000 cjmean 3.090 3.090 3.090 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 186.5 186.6 186.7 kozaiamp 179.9 179.9 180.0