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: 04DH64
# Created Sat Apr 20 01:11:43 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 29 observations of 29
# Arc: 16.97y
# First observation: 2004/02/26
# Last observation: 2021/02/15
# Chi-squared of fit: 54.55 DOF: 52 RMS: 0.24
# Min/Max residuals: -0.43 0.68
# Exact a, adot, b, bdot, g, gdot:
1.346939E-05 1.729191E-02 -1.283076E-06 1.062470E-03 2.034549E-02 -9.893283E-04
# Covariance matrix:
1.1014E-13 -3.3224E-14 1.7795E-15 -1.6093E-15 1.2315E-14 -8.8130E-14
-3.3224E-14 2.5876E-14 -1.6180E-15 1.4766E-15 1.9223E-15 8.0930E-14
1.7795E-15 -1.6180E-15 8.0330E-14 -6.8386E-15 -2.2858E-17 -5.4135E-15
-1.6093E-15 1.4766E-15 -6.8386E-15 1.7945E-15 2.5519E-16 4.9492E-15
1.2315E-14 1.9223E-15 -2.2858E-17 2.5519E-16 2.3084E-13 1.5150E-14
-8.8130E-14 8.0930E-14 -5.4135E-15 4.9492E-15 1.5150E-14 2.7130E-13
# lat0 lon0 xBary yBary zBary JD0
0.215626 137.779552 -0.323632 0.003568 -0.931047 2453061.724153
# Heliocentric elements and errors
Epoch: 2453062.5000 = 2004/02/27
Mean Anomaly: 218.57528 +/- 0.036
Argument of Peri: 150.63019 +/- 0.027
Long of Asc Node: 134.70260 +/- 0.000
Inclination: 3.51208 +/- 0.000
Eccentricity: 0.08749310 +/- 0.0001
Semi-Major Axis: 46.76278645 +/- 0.0040
Time of Perihelion: 2498947.6154 +/- 14.8
Perihelion: 42.67136519 +/- 0.0046
Aphelion: 50.85420770 +/- 0.0051
Period (y) 319.7855 +/- 0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -37.31026831 +/- 0.0009
Ecliptic Y 33.41642218 +/- 0.0008
Ecliptic Z 0.18491576 +/- 0.0000
Ecliptic XDOT -0.00146835 +/- 0.0000
Ecliptic YDOT -0.00181975 +/- 0.0000
Ecliptic ZDOT 0.00014262 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 50.08743339 +/- 0.0008
Geocenter to KBO 49.15101757 +/- 0.0012
# Hcoef: 5.97
The following table shows the complete astrometric record for 04DH64. 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 (04DH64) followed by the observatory code and reference code for the source of the astrometry.
2004 02 26.22341 09 21 09.71 +15 42 32.3 22.5R 04DH64 695 Ck0899 2004 02 26.35224 09 21 09.18 +15 42 34.3 04DH64 695 Ck0899 2004 02 27.19691 09 21 05.89 +15 42 49.9 04DH64 695 Ck0899 2004 03 15.18740 09 20 05.36 +15 47 38.6 22.3R 04DH64 695 Ck4349 2004 03 15.27421 09 20 05.08 +15 47 39.9 04DH64 695 Ck4349 2004 03 20.20575 09 19 50.04 +15 48 51.6 22.5R 04DH64 662 Ck2275 2004 03 20.29647 09 19 49.78 +15 48 52.7 04DH64 662 Ck2275 2005 03 09.25809 09 24 26.09 +15 31 10.0 22.5R 04DH64 695 Cn3122 2005 03 09.34998 09 24 25.75 +15 31 11.9 04DH64 695 Cn3122 2005 03 10.248106 09 24 22.64 +15 31 27.1 22.5V 04DH64 645 C~2JxA 2005 03 10.248935 09 24 22.65 +15 31 27.1 23.1V 04DH64 645 C~2JxA 2005 03 10.251423 09 24 22.65 +15 31 27.1 04DH64 645 C~2JxA 2005 03 10.25899 09 24 22.57 +15 31 27.2 04DH64 695 Cn3122 2005 04 10.15814 09 23 01.46 +15 37 59.1 23.0R 04DH64 695 Cn3122 2005 04 11.15904 09 22 59.88 +15 38 06.7 04DH64 695 Cn3122 2005 04 12.15767 09 22 58.37 +15 38 14.3 04DH64 695 Cn3122 2005 04 13.16931 09 22 56.90 +15 38 21.5 04DH64 695 Cn3122 2005 12 06.459038 09 33 40.41 +14 49 31.3 22.3V 04DH64 645 C~2JxA 2005 12 06.459867 09 33 40.42 +14 49 31.4 22.4V 04DH64 645 C~2JxA 2005 12 06.462355 09 33 40.42 +14 49 31.4 23.6V 04DH64 645 C~2JxA 2006 02 03.48337 09 30 41.27 +15 04 54.2 23.3r 04DH64 568 C~11pz 2009 02 26.19789 09 41 05.04 +14 25 29.4 23.7R 04DH64 688 C~04qI 2009 02 26.29528 09 41 04.61 +14 25 31.1 04DH64 688 C~04qI 2013 03 13.23881 09 56 02.75 +13 23 50.4 22.7R 04DH64 695 C~0ud8 2013 03 14.19466 09 55 59.30 +13 24 08.8 04DH64 695 C~0ud8 2013 03 14.34503 09 55 58.77 +13 24 11.5 04DH64 695 C~0ud8 2021 02 15.307020 10 29 39.383 +10 47 26.70 22.8G 04DH64 G37 C~4YrO 2021 02 15.383400 10 29 39.078 +10 47 28.37 04DH64 G37 C~4YrO 2021 02 15.457100 10 29 38.778 +10 47 30.28 04DH64 G37 C~4YrO
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 0.42
2 0.0004 0.00 -0.15 0.00 0.02
3 0.0027 0.00 -0.35 0.00 -0.09
4 0.0492 0.00 -0.16 0.00 -0.07
5 0.0494 0.00 -0.13 0.00 -0.09
6 0.0629 0.00 0.08 0.00 -0.10
7 0.0632 0.00 0.23 0.00 -0.26
8 1.0323 0.00 0.15 0.00 -0.36
9 1.0325 0.00 -0.02 0.00 -0.02
10 1.0350 0.00 0.35 0.00 -0.00
11 1.0350 0.00 0.55 0.00 -0.01
12 1.0350 0.00 0.68 0.00 -0.06
13 1.0350 0.00 -0.13 0.00 -0.09
14 1.1196 0.00 -0.38 0.00 0.05
15 1.1223 0.00 -0.19 0.00 -0.10
16 1.1251 0.00 -0.11 0.00 0.12
17 1.1278 0.00 -0.24 0.00 0.19
18 1.7775 0.00 -0.11 0.00 -0.24
19 1.7775 0.00 0.05 0.00 -0.14
20 1.7775 0.00 0.10 0.00 -0.16
21 1.9391 0.00 -0.43 0.00 0.55
22 5.0020 0.00 0.14 0.00 0.60
23 5.0023 0.00 -0.42 0.00 0.31
24 9.0432 0.00 0.06 0.00 -0.06
25 9.0458 0.00 -0.02 0.00 -0.08
26 9.0462 0.00 0.26 0.00 -0.25
27 16.9722 0.00 -0.05 0.00 0.05
28 16.9724 0.00 0.01 0.00 -0.12
29 16.9726 0.00 -0.02 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.
04DH64 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 46.435 46.435 46.435 ecceobj 0.092 0.092 0.092 incobj 3.524 3.524 3.524 qmin 41.573 41.573 41.572 qmax 51.688 51.704 51.710 amean 46.509 46.509 46.509 amin 46.129 46.129 46.126 amax 46.923 46.928 46.920 emean 0.090 0.090 0.090 emin 0.078 0.078 0.078 emax 0.102 0.102 0.102 imean 2.497 2.497 2.497 imin 2.115 2.115 2.115 imax 2.843 2.844 2.844 excite_mean 0.100 0.100 0.100 fracstop 1.000 1.000 1.000 cjmean 3.120 3.120 3.120 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 181.0 181.0 181.1 kozaiamp 180.0 180.0 180.0