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 Sun Dec 22 02:08:36 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 29 observations of 29
# Arc: 15.10y
# First observation: 2004/02/27
# Last observation: 2019/04/05
# Chi-squared of fit: 22.28 DOF: 52 RMS: 0.15
# Min/Max residuals: -0.24 0.53
# Exact a, adot, b, bdot, g, gdot:
1.502146E-05 2.190429E-02 1.599198E-06 3.600003E-04 2.330277E-02 7.525608E-04
# Covariance matrix:
3.1282E-13 -3.6631E-14 1.4329E-15 -3.2580E-16 1.4364E-13 -5.1513E-14
-3.6631E-14 7.2962E-14 -3.2163E-16 1.1785E-15 6.4067E-14 2.4201E-13
1.4329E-15 -3.2163E-16 2.2659E-13 -1.7862E-14 2.3723E-15 -8.8932E-16
-3.2580E-16 1.1785E-15 -1.7862E-14 1.8712E-15 1.0328E-15 4.0084E-15
1.4364E-13 6.4067E-14 2.3723E-15 1.0328E-15 3.7480E-13 2.4249E-13
-5.1513E-14 2.4201E-13 -8.8932E-16 4.0084E-15 2.4249E-13 8.2551E-13
# 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: 108.34519 +/- 0.130
Argument of Peri: 313.77189 +/- 0.120
Long of Asc Node: 105.52432 +/- 0.003
Inclination: 2.30012 +/- 0.000
Eccentricity: 0.03198877 +/- 0.0000
Semi-Major Axis: 43.40048802 +/- 0.0041
Time of Perihelion: 2421632.2744 +/- 37.9
Perihelion: 42.01215985 +/- 0.0045
Aphelion: 44.78881618 +/- 0.0047
Period (y) 285.9237 +/- 0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -43.31480066 +/- 0.0011
Ecliptic Y 6.81454050 +/- 0.0002
Ecliptic Z 1.60306373 +/- 0.0000
Ecliptic XDOT -0.00047621 +/- 0.0000
Ecliptic YDOT -0.00253796 +/- 0.0000
Ecliptic ZDOT 0.00004571 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.87685094 +/- 0.0011
Geocenter to KBO 42.91337382 +/- 0.0011
# Hcoef: 7.60
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 2016 04 02.39342 12 24 27.16 -00 07 03.6 24.0i 04DM71 T09 C~89L8 2016 04 02.41732 12 24 27.05 -00 07 03.0 23.9i 04DM71 T09 C~89L8 2016 04 02.43645 12 24 26.97 -00 07 02.5 23.7i 04DM71 T09 C~89L8 2016 04 02.46904 12 24 26.83 -00 07 01.6 23.7i 04DM71 T09 C~89L8 2016 04 02.49363 12 24 26.73 -00 07 00.8 23.7i 04DM71 T09 C~89L8 2016 04 02.51521 12 24 26.64 -00 07 00.5 23.3i 04DM71 T09 C~89L8 2016 04 02.52599 12 24 26.59 -00 07 00.1 23.7i 04DM71 T09 C~89L8 2017 02 02.61925 12 32 34.31 -01 00 24.1 24.5i 04DM71 T09 C~8Gic 2017 02 02.62764 12 32 34.28 -01 00 24.0 24.1i 04DM71 T09 C~8Gic 2017 02 02.63614 12 32 34.26 -01 00 24.0 23.9i 04DM71 T09 C~8Gic 2017 02 02.64725 12 32 34.24 -01 00 23.6 24.0i 04DM71 T09 C~8Gic 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 -0.14 0.00 -0.24
2 0.0003 0.00 0.02 0.00 0.03
3 0.0462 0.00 -0.02 0.00 -0.13
4 0.0465 0.00 -0.13 0.00 -0.04
5 1.1167 0.00 0.38 0.00 -0.24
6 1.1170 0.00 0.17 0.00 0.41
7 1.1195 0.00 -0.10 0.00 0.15
8 1.2749 0.00 -0.12 0.00 0.10
9 1.2776 0.00 -0.10 0.00 0.07
10 11.0471 0.00 0.53 0.00 -0.12
11 11.0473 0.00 -0.09 0.00 -0.04
12 12.0960 0.00 -0.11 0.00 0.02
13 12.0960 0.00 -0.21 0.00 -0.03
14 12.0961 0.00 -0.16 0.00 -0.05
15 12.0962 0.00 -0.14 0.00 -0.04
16 12.0962 0.00 -0.04 0.00 0.09
17 12.0963 0.00 0.01 0.00 -0.19
18 12.0963 0.00 -0.04 0.00 -0.09
19 12.9344 0.00 0.02 0.00 0.11
20 12.9344 0.00 -0.16 0.00 0.07
21 12.9344 0.00 -0.18 0.00 -0.07
22 12.9345 0.00 -0.11 0.00 0.15
23 12.9916 0.00 0.05 0.00 -0.06
24 12.9917 0.00 0.15 0.00 0.09
25 12.9917 0.00 0.26 0.00 0.14
26 12.9918 0.00 -0.16 0.00 0.07
27 12.9919 0.00 0.01 0.00 -0.00
28 15.1016 0.00 0.12 0.00 0.07
29 15.1018 0.00 0.07 0.00 -0.15
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 40.195 40.193 40.167 qmax 46.305 46.326 46.307 amean 43.159 43.159 43.159 amin 42.830 42.825 42.829 amax 43.511 43.511 43.509 emean 0.047 0.047 0.047 emin 0.026 0.026 0.026 emax 0.065 0.065 0.065 imean 1.305 1.305 1.305 imin 0.130 0.130 0.130 imax 2.096 2.096 2.097 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 177.6 177.6 177.6 kozaiamp 180.0 180.0 180.0