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: 04DM71
# Created Sat Apr 20 01:11:44 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 18 observations of 18
# Arc: 15.10y
# First observation: 2004/02/27
# Last observation: 2019/04/05
# Chi-squared of fit: 15.97 DOF: 30 RMS: 0.17
# Min/Max residuals: -0.27 0.41
# Exact a, adot, b, bdot, g, gdot:
1.497295E-05 2.190454E-02 1.611218E-06 3.600208E-04 2.330298E-02 7.533347E-04
# Covariance matrix:
4.0604E-13 -9.9890E-14 3.1562E-15 -1.4366E-15 2.6576E-13 -2.4581E-13
-9.9890E-14 1.4590E-13 -1.4518E-15 2.4096E-15 1.0680E-14 4.6209E-13
3.1562E-15 -1.4518E-15 2.2746E-13 -1.7485E-14 4.7017E-15 -4.3278E-15
-1.4366E-15 2.4096E-15 -1.7485E-14 2.3444E-15 6.8806E-17 7.7464E-15
2.6576E-13 1.0680E-14 4.7017E-15 6.8806E-17 5.6378E-13 7.4652E-14
-2.4581E-13 4.6209E-13 -4.3278E-15 7.7464E-15 7.4652E-14 1.4899E-12
# lat0 lon0 xBary yBary zBary JD0
2.140719 171.356826 0.226541 0.035900 -0.958924 2453062.839203
# Heliocentric elements and errors
Epoch: 2453062.5000 = 2004/02/27
Mean Anomaly: 108.32327 +/- 0.195
Argument of Peri: 313.78886 +/- 0.181
Long of Asc Node: 105.52531 +/- 0.003
Inclination: 2.30014 +/- 0.000
Eccentricity: 0.03202160 +/- 0.0001
Semi-Major Axis: 43.40007015 +/- 0.0056
Time of Perihelion: 2421639.0890 +/- 56.8
Perihelion: 42.01033027 +/- 0.0059
Aphelion: 44.78981003 +/- 0.0062
Period (y) 285.9195 +/- 0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -43.31441719 +/- 0.0014
Ecliptic Y 6.81448432 +/- 0.0002
Ecliptic Z 1.60304976 +/- 0.0001
Ecliptic XDOT -0.00047630 +/- 0.0000
Ecliptic YDOT -0.00253796 +/- 0.0000
Ecliptic ZDOT 0.00004572 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.87646313 +/- 0.0013
Geocenter to KBO 42.91298599 +/- 0.0014
# Hcoef: 7.52
The following table shows the complete astrometric record for 04DM71. 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 (04DM71) followed by the observatory code and reference code for the source of the astrometry.
2004 02 27.33846 11 31 37.80 +05 23 39.2 23.0R 04DM71 695 Ck5116 2004 02 27.43247 11 31 37.41 +05 23 42.1 04DM71 695 Ck5116 2004 03 15.22719 11 30 25.06 +05 31 35.5 23.2R 04DM71 695 Ck5116 2004 03 15.32049 11 30 24.64 +05 31 38.2 04DM71 695 Ck5116 2005 04 10.22402 11 33 19.31 +05 14 00.1 23.0R 04DM71 695 Cn3122 2005 04 10.34054 11 33 18.85 +05 14 03.4 04DM71 695 Cn3122 2005 04 11.22672 11 33 15.53 +05 14 23.2 04DM71 695 Cn3122 2005 06 07.00280 11 31 25.27 +05 23 54.0 23.8R 04DM71 304 Cn6536 2005 06 07.99911 11 31 25.52 +05 23 49.4 04DM71 304 Cn6536 2015 03 16.28225 12 21 08.73 +00 13 41.7 24.0R 04DM71 G37 C~1N5r 2015 03 16.35450 12 21 08.38 +00 13 43.8 04DM71 G37 C~1N5r 2017 02 23.52446 12 31 35.56 -00 53 12.4 24.0r 04DM71 T09 C~7bAc 2017 02 23.56346 12 31 35.43 -00 53 11.3 24.1r 04DM71 T09 C~7bAc 2017 02 23.56555 12 31 35.43 -00 53 11.2 23.9r 04DM71 T09 C~7bAc 2017 02 23.59748 12 31 35.29 -00 53 10.5 24.2r 04DM71 T09 C~7bAc 2017 02 23.63774 12 31 35.16 -00 53 09.6 24.0r 04DM71 T09 C~7bAc 2019 04 05.214180 12 38 00.978 -01 33 00.10 24.1G 04DM71 G37 C~34bZ 2019 04 05.285520 12 38 00.665 -01 32 58.39 04DM71 G37 C~34bZ
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 -0.13 0.00 -0.25
2 0.0003 0.00 0.03 0.00 0.02
3 0.0462 0.00 0.00 0.00 -0.14
4 0.0465 0.00 -0.11 0.00 -0.05
5 1.1167 0.00 0.36 0.00 -0.24
6 1.1170 0.00 0.15 0.00 0.41
7 1.1195 0.00 -0.12 0.00 0.15
8 1.2749 0.00 -0.13 0.00 0.09
9 1.2776 0.00 -0.11 0.00 0.06
10 11.0471 0.00 0.36 0.00 -0.09
11 11.0473 0.00 -0.26 0.00 -0.02
12 12.9916 0.00 -0.07 0.00 -0.06
13 12.9917 0.00 0.04 0.00 0.09
14 12.9917 0.00 0.15 0.00 0.14
15 12.9918 0.00 -0.27 0.00 0.07
16 12.9919 0.00 -0.11 0.00 -0.00
17 15.1016 0.00 0.07 0.00 0.04
18 15.1018 0.00 0.02 0.00 -0.19
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.
04DM71 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 42.961 42.961 42.961 ecceobj 0.038 0.038 0.038 incobj 2.301 2.301 2.301 qmin 40.228 40.221 40.222 qmax 46.323 46.343 46.318 amean 43.159 43.159 43.159 amin 42.825 42.826 42.818 amax 43.504 43.507 43.502 emean 0.047 0.047 0.047 emin 0.027 0.027 0.027 emax 0.065 0.065 0.065 imean 1.306 1.306 1.306 imin 0.130 0.130 0.130 imax 2.096 2.097 2.096 excite_mean 0.053 0.053 0.053 fracstop 1.000 1.000 1.000 cjmean 3.088 3.088 3.088 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 177.7 177.7 177.7 kozaiamp 180.0 180.0 180.0