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: 04HG79
# Created Wed Dec 25 02:08:33 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 20 observations of 20
# Arc: 10.97y
# First observation: 2004/04/24
# Last observation: 2015/04/15
# Chi-squared of fit: 19.81 DOF: 34 RMS: 0.18
# Min/Max residuals: -0.33 0.53
# Exact a, adot, b, bdot, g, gdot:
1.558742E-05 2.286047E-02 -4.327090E-07 -1.420003E-03 2.368156E-02 -4.080955E-05
# Covariance matrix:
2.4609E-13 -1.0767E-13 -2.8263E-15 5.2292E-15 1.6855E-13 -3.1932E-13
-1.0767E-13 2.5269E-13 9.2123E-15 -1.5535E-14 1.2328E-13 9.4252E-13
-2.8263E-15 9.2123E-15 1.0737E-13 -1.2980E-14 6.1028E-15 3.5375E-14
5.2292E-15 -1.5535E-14 -1.2980E-14 6.0941E-15 -9.3154E-15 -5.9459E-14
1.6855E-13 1.2328E-13 6.1028E-15 -9.3154E-15 5.1691E-13 5.6078E-13
-3.1932E-13 9.4252E-13 3.5375E-14 -5.9459E-14 5.6078E-13 3.6064E-12
# lat0 lon0 xBary yBary zBary JD0
0.585115 -132.531204 0.221205 0.010052 -0.979261 2453119.929133
# Heliocentric elements and errors
Epoch: 2453120.5000 = 2004/04/25
Mean Anomaly: 350.85629 +/- 0.179
Argument of Peri: 180.47256 +/- 0.189
Long of Asc Node: 56.31746 +/- 0.000
Inclination: 3.59271 +/- 0.000
Eccentricity: 0.02611204 +/- 0.0001
Semi-Major Axis: 44.35042554 +/- 0.0052
Time of Perihelion: 2455860.5915 +/- 56.7
Perihelion: 43.19234551 +/- 0.0064
Aphelion: 45.50850557 +/- 0.0066
Period (y) 295.3622 +/- 0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -29.37194636 +/- 0.0009
Ecliptic Y -31.68630858 +/- 0.0009
Ecliptic Z 0.43122880 +/- 0.0000
Ecliptic XDOT 0.00194663 +/- 0.0000
Ecliptic YDOT -0.00179128 +/- 0.0000
Ecliptic ZDOT -0.00016408 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.20786479 +/- 0.0009
Geocenter to KBO 42.22697796 +/- 0.0013
# Hcoef: 6.86
The following table shows the complete astrometric record for 04HG79. 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 (04HG79) followed by the observatory code and reference code for the source of the astrometry.
2004 04 24.42839 15 00 42.30 -16 29 01.0 04HG79 568 C~0VDp 2004 04 24.45453 15 00 42.18 -16 29 00.5 04HG79 568 C~0VDp 2004 04 25.43410 15 00 37.71 -16 28 42.2 23.4g 04HG79 568 C~0VDp 2004 04 25.45680 15 00 37.61 -16 28 41.7 23.4g 04HG79 568 C~0VDp 2004 04 25.48375 15 00 37.47 -16 28 41.2 23.6g 04HG79 568 C~0VDp 2004 07 08.26064 14 55 51.62 -16 09 50.6 23.4i 04HG79 568 C~0VDp 2004 07 08.32344 14 55 51.50 -16 09 50.2 23.4i 04HG79 568 C~0VDp 2004 07 08.38483 14 55 51.37 -16 09 49.8 04HG79 568 C~0VDp 2005 05 08.42069 15 04 48.43 -16 51 19.3 23.0r 04HG79 568 C~0VDp 2005 05 08.45260 15 04 48.28 -16 51 18.7 23.2r 04HG79 568 C~0VDp 2005 05 08.48437 15 04 48.13 -16 51 18.1 23.2r 04HG79 568 C~0VDp 2005 05 10.47732 15 04 38.69 -16 50 41.1 23.1r 04HG79 568 C~0VDp 2005 07 08.33665 15 00 57.67 -16 36 32.2 22.8r 04HG79 568 C~0VDp 2005 07 08.38445 15 00 57.57 -16 36 31.9 22.8r 04HG79 568 C~0VDp 2006 06 03.39240 15 08 02.04 -17 09 58.8 04HG79 568 C~0VDp 2006 06 03.40838 15 08 01.96 -17 09 58.5 04HG79 568 C~0VDp 2006 06 03.42486 15 08 01.90 -17 09 57.8 04HG79 568 C~0VDp 2015 04 15.37869 15 59 31.32 -20 52 42.7 23.0R 04HG79 695 C~1RHU 2015 04 15.41653 15 59 31.20 -20 52 42.4 04HG79 695 C~1RHU 2015 04 15.45454 15 59 31.04 -20 52 41.8 04HG79 695 C~1RHU
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 -0.10 0.00 -0.08
2 0.0001 0.00 -0.08 0.00 -0.07
3 0.0028 0.00 0.07 0.00 0.02
4 0.0028 0.00 0.16 0.00 0.09
5 0.0029 0.00 -0.06 0.00 0.09
6 0.2049 0.00 -0.20 0.00 -0.30
7 0.2051 0.00 -0.15 0.00 -0.31
8 0.2052 0.00 -0.31 0.00 -0.33
9 1.0376 0.00 0.07 0.00 0.08
10 1.0377 0.00 0.12 0.00 0.08
11 1.0378 0.00 0.16 0.00 0.09
12 1.0433 0.00 -0.12 0.00 -0.01
13 1.2044 0.00 0.29 0.00 0.08
14 1.2045 0.00 0.28 0.00 0.03
15 2.1080 0.00 -0.02 0.00 0.06
16 2.1081 0.00 -0.17 0.00 0.10
17 2.1081 0.00 0.00 0.00 0.53
18 10.9732 0.00 -0.17 0.00 -0.09
19 10.9733 0.00 0.19 0.00 -0.15
20 10.9734 0.00 -0.05 0.00 0.09
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.
04HG79 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.931 43.931 43.931 ecceobj 0.018 0.018 0.018 incobj 3.607 3.607 3.607 qmin 42.696 42.697 42.695 qmax 45.992 45.997 45.988 amean 44.257 44.257 44.257 amin 43.918 43.919 43.919 amax 44.599 44.600 44.600 emean 0.018 0.018 0.018 emin 0.002 0.002 0.002 emax 0.031 0.031 0.031 imean 2.386 2.386 2.386 imin 1.777 1.776 1.777 imax 2.896 2.896 2.896 excite_mean 0.046 0.046 0.046 fracstop 1.000 1.000 1.000 cjmean 3.102 3.102 3.102 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 183.3 183.5 183.4 kozaiamp 179.9 180.0 180.0