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 Sun Oct 19 01:08:54 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 28 observations of 28
# Arc: 14.01y
# First observation: 2004/04/24
# Last observation: 2018/04/27
# Chi-squared of fit: 24.14 DOF: 50 RMS: 0.16
# Min/Max residuals: -0.32 0.57
# Exact a, adot, b, bdot, g, gdot:
1.521321E-05 2.286079E-02 -4.241436E-07 -1.420041E-03 2.368123E-02 -3.991010E-05
# Covariance matrix:
1.7933E-13 -2.7546E-14 -5.4696E-16 9.3828E-16 1.2998E-13 -4.9679E-14
-2.7546E-14 4.2384E-14 1.9996E-15 -2.6029E-15 2.9395E-14 1.3502E-13
-5.4696E-16 1.9996E-15 1.0280E-13 -9.1418E-15 2.2042E-15 6.6878E-15
9.3828E-16 -2.6029E-15 -9.1418E-15 1.8009E-15 -2.3936E-15 -8.6666E-15
1.2998E-13 2.9395E-14 2.2042E-15 -2.3936E-15 3.2249E-13 1.2205E-13
-4.9679E-14 1.3502E-13 6.6878E-15 -8.6666E-15 1.2205E-13 4.4940E-13
# 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: 350.96344 +/- 0.064
Argument of Peri: 180.36104 +/- 0.067
Long of Asc Node: 56.31734 +/- 0.000
Inclination: 3.59275 +/- 0.000
Eccentricity: 0.02617594 +/- 0.0001
Semi-Major Axis: 44.35426853 +/- 0.0042
Time of Perihelion: 2455828.8340 +/- 24.4
Perihelion: 43.19325376 +/- 0.0052
Aphelion: 45.51528330 +/- 0.0054
Period (y) 295.4006 +/- 0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -29.37235545 +/- 0.0007
Ecliptic Y -31.68673117 +/- 0.0007
Ecliptic Z 0.43123517 +/- 0.0000
Ecliptic XDOT 0.00194662 +/- 0.0000
Ecliptic YDOT -0.00179141 +/- 0.0000
Ecliptic ZDOT -0.00016408 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.20845283 +/- 0.0007
Geocenter to KBO 42.22756593 +/- 0.0010
# Hcoef: 6.76
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 2014 05 09.126126 15 52 23.094 -20 27 06.80 22.4i 04HG79 W84 C~98JD 2014 05 09.129596 15 52 23.075 -20 27 06.67 22.2i 04HG79 W84 C~98JD 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 2015 06 24.091096 15 54 13.761 -20 38 15.76 23.3V 04HG79 W84 C~98JD 2015 06 24.125602 15 54 13.619 -20 38 15.37 23.5V 04HG79 W84 C~98JD 2018 04 27.321244 16 15 06.162 -21 49 30.13 22.5i 04HG79 W84 C~98JD 2018 04 27.326083 16 15 06.145 -21 49 29.85 22.9i 04HG79 W84 C~98JD 2018 04 27.328491 16 15 06.131 -21 49 29.93 22.8i 04HG79 W84 C~98JD 2018 04 27.330903 16 15 06.120 -21 49 29.74 22.8i 04HG79 W84 C~98JD
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 -0.02 0.00 -0.11
2 0.0001 0.00 0.00 0.00 -0.09
3 0.0028 0.00 0.14 0.00 -0.01
4 0.0028 0.00 0.23 0.00 0.07
5 0.0029 0.00 0.02 0.00 0.07
6 0.2049 0.00 -0.21 0.00 -0.29
7 0.2051 0.00 -0.16 0.00 -0.31
8 0.2052 0.00 -0.32 0.00 -0.32
9 1.0376 0.00 0.07 0.00 0.08
10 1.0377 0.00 0.12 0.00 0.09
11 1.0378 0.00 0.16 0.00 0.10
12 1.0433 0.00 -0.12 0.00 -0.00
13 1.2044 0.00 0.21 0.00 0.10
14 1.2045 0.00 0.20 0.00 0.06
15 2.1080 0.00 -0.11 0.00 0.10
16 2.1081 0.00 -0.26 0.00 0.14
17 2.1081 0.00 -0.09 0.00 0.57
18 10.0389 0.00 -0.03 0.00 -0.20
19 10.0389 0.00 -0.06 0.00 -0.11
20 10.9732 0.00 -0.20 0.00 -0.04
21 10.9733 0.00 0.15 0.00 -0.09
22 10.9734 0.00 -0.09 0.00 0.14
23 11.1640 0.00 0.18 0.00 -0.03
24 11.1641 0.00 0.18 0.00 -0.03
25 14.0066 0.00 -0.04 0.00 -0.13
26 14.0066 0.00 0.01 0.00 0.10
27 14.0066 0.00 -0.04 0.00 -0.00
28 14.0066 0.00 -0.05 0.00 0.16
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 43.935 43.935 43.935 ecceobj 0.018 0.018 0.018 incobj 3.607 3.607 3.607 qmin 42.692 42.688 42.696 qmax 45.989 46.000 45.994 amean 44.261 44.261 44.261 amin 43.919 43.920 43.918 amax 44.610 44.608 44.610 emean 0.018 0.018 0.018 emin 0.002 0.002 0.002 emax 0.031 0.031 0.031 imean 2.387 2.387 2.387 imin 1.777 1.777 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 184.4 184.3 184.2 kozaiamp 180.0 180.0 180.0