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: 04HC79
# Created Wed Dec 25 02:08:32 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 32 observations of 32
# Arc: 15.04y
# First observation: 2004/04/22
# Last observation: 2019/05/06
# Chi-squared of fit: 37.99 DOF: 58 RMS: 0.19
# Min/Max residuals: -0.41 0.49
# Exact a, adot, b, bdot, g, gdot:
1.462821E-05 2.855533E-02 2.248733E-07 -6.788965E-04 2.632418E-02 4.382708E-04
# Covariance matrix:
2.1998E-13 -1.8912E-14 -3.5578E-17 1.7664E-16 2.2279E-13 -1.6731E-14
-1.8912E-14 5.1096E-14 1.3069E-15 -1.2405E-15 8.4028E-14 1.1127E-13
-3.5578E-17 1.3069E-15 9.7803E-14 -7.2593E-15 2.7374E-15 2.9225E-15
1.7664E-16 -1.2405E-15 -7.2593E-15 1.0148E-15 -2.3085E-15 -2.7630E-15
2.2279E-13 8.4028E-14 2.7374E-15 -2.3085E-15 6.3257E-13 2.0527E-13
-1.6731E-14 1.1127E-13 2.9225E-15 -2.7630E-15 2.0527E-13 2.4777E-13
# lat0 lon0 xBary yBary zBary JD0
0.510515 -131.272802 0.273415 0.008645 -0.965356 2453118.056943
# Heliocentric elements and errors
Epoch: 2453118.5000 = 2004/04/23
Mean Anomaly: 3.06545 +/- 0.006
Argument of Peri: 155.50540 +/- 0.008
Long of Asc Node: 68.48185 +/- 0.001
Inclination: 1.44426 +/- 0.000
Eccentricity: 0.16429040 +/- 0.0001
Semi-Major Axis: 46.59455837 +/- 0.0068
Time of Perihelion: 2452129.2791 +/- 1.9
Perihelion: 38.93951963 +/- 0.0072
Aphelion: 54.24959710 +/- 0.0091
Period (y) 318.0614 +/- 0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -25.90324737 +/- 0.0008
Ecliptic Y -29.09318646 +/- 0.0009
Ecliptic Z 0.33851546 +/- 0.0000
Ecliptic XDOT 0.00219859 +/- 0.0000
Ecliptic YDOT -0.00200074 +/- 0.0000
Ecliptic ZDOT -0.00007007 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 38.95517650 +/- 0.0008
Geocenter to KBO 37.98789487 +/- 0.0011
# Hcoef: 7.08
The following table shows the complete astrometric record for 04HC79. 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 (04HC79) followed by the observatory code and reference code for the source of the astrometry.
2004 04 22.55620 15 05 40.04 -16 54 15.4 23.6g 04HC79 568 C~0VDp 2004 04 24.43121 15 05 30.82 -16 53 37.8 23.2g 04HC79 568 C~0VDp 2004 04 24.45738 15 05 30.69 -16 53 37.5 23.6g 04HC79 568 C~0VDp 2004 04 25.43696 15 05 25.85 -16 53 17.3 23.3g 04HC79 568 C~0VDp 2004 04 25.46393 15 05 25.71 -16 53 16.8 23.2g 04HC79 568 C~0VDp 2004 04 25.48658 15 05 25.60 -16 53 16.5 23.5g 04HC79 568 C~0VDp 2004 07 08.26697 15 00 12.87 -16 32 29.1 22.9i 04HC79 568 C~0VDp 2004 07 08.32980 15 00 12.76 -16 32 28.5 22.8i 04HC79 568 C~0VDp 2004 07 08.39142 15 00 12.61 -16 32 28.2 23.1i 04HC79 568 C~0VDp 2005 05 08.42445 15 10 54.81 -17 17 55.2 22.8r 04HC79 568 C~0VDp 2005 05 08.45631 15 10 54.64 -17 17 54.6 22.8r 04HC79 568 C~0VDp 2005 05 08.48812 15 10 54.47 -17 17 53.9 22.8r 04HC79 568 C~0VDp 2005 05 10.48106 15 10 44.24 -17 17 13.8 22.7r 04HC79 568 C~0VDp 2006 06 03.39463 15 15 20.72 -17 38 00.3 04HC79 568 C~0VDp 2006 06 03.41037 15 15 20.63 -17 37 59.9 04HC79 568 C~0VDp 2006 06 03.42683 15 15 20.57 -17 37 59.7 04HC79 568 C~0VDp 2008 06 08.04634 15 28 09.81 -18 30 50.0 22.7R 04HC79 807 C~0VDp 2008 06 08.09926 15 28 09.57 -18 30 49.1 22.4R 04HC79 807 C~0VDp 2008 06 08.15584 15 28 09.29 -18 30 48.1 22.3R 04HC79 807 C~0VDp 2016 05 29.33350 16 22 39.138 -21 31 46.94 22.6R 04HC79 G37 C~2bkb 2016 05 29.38914 16 22 38.838 -21 31 46.26 04HC79 G37 C~2bkb 2019 05 05.26311 16 45 08.03 -22 25 03.8 23.2V 04HC79 W84 C~5ihr 2019 05 05.26483 16 45 08.03 -22 25 03.8 04HC79 W84 C~5ihr 2019 05 05.26999 16 45 08.00 -22 25 03.7 04HC79 W84 C~5ihr 2019 05 05.32904 16 45 07.74 -22 25 03.4 04HC79 W84 C~5ihr 2019 05 05.33420 16 45 07.72 -22 25 03.3 04HC79 W84 C~5ihr 2019 05 05.36000 16 45 07.59 -22 25 03.1 04HC79 W84 C~5ihr 2019 05 05.36172 16 45 07.58 -22 25 03.0 04HC79 W84 C~5ihr 2019 05 05.36688 16 45 07.56 -22 25 03.0 04HC79 W84 C~5ihr 2019 05 06.25197 16 45 03.51 -22 24 56.3 04HC79 W84 C~5ihr 2019 05 06.25369 16 45 03.49 -22 24 56.2 04HC79 W84 C~5ihr 2019 05 06.25541 16 45 03.49 -22 24 56.2 04HC79 W84 C~5ihr
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 0.49 0.00 -0.27
2 0.0051 0.00 -0.00 0.00 -0.03
3 0.0052 0.00 0.02 0.00 -0.25
4 0.0079 0.00 0.06 0.00 0.28
5 0.0080 0.00 0.01 0.00 0.24
6 0.0080 0.00 0.08 0.00 0.08
7 0.2100 0.00 -0.27 0.00 -0.27
8 0.2102 0.00 0.12 0.00 -0.16
9 0.2104 0.00 -0.15 0.00 -0.34
10 1.0428 0.00 -0.23 0.00 0.25
11 1.0428 0.00 -0.28 0.00 0.21
12 1.0429 0.00 -0.33 0.00 0.27
13 1.0484 0.00 0.06 0.00 0.30
14 2.1132 0.00 0.03 0.00 -0.41
15 2.1132 0.00 -0.18 0.00 -0.28
16 2.1133 0.00 0.10 0.00 -0.38
17 4.1273 0.00 0.08 0.00 0.26
18 4.1274 0.00 0.26 0.00 0.31
19 4.1276 0.00 0.11 0.00 0.39
20 12.1007 0.00 -0.05 0.00 -0.05
21 12.1008 0.00 -0.03 0.00 -0.04
22 15.0327 0.00 -0.17 0.00 0.03
23 15.0327 0.00 -0.05 0.00 0.02
24 15.0328 0.00 -0.14 0.00 0.08
25 15.0329 0.00 0.09 0.00 -0.08
26 15.0329 0.00 0.15 0.00 -0.02
27 15.0330 0.00 -0.01 0.00 -0.02
28 15.0330 0.00 -0.04 0.00 0.06
29 15.0330 0.00 0.02 0.00 0.02
30 15.0354 0.00 0.09 0.00 -0.11
31 15.0354 0.00 -0.09 0.00 -0.02
32 15.0355 0.00 0.03 0.00 -0.03
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.
04HC79 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 46.075 46.075 46.075 ecceobj 0.155 0.155 0.155 incobj 1.448 1.448 1.448 qmin 38.400 38.395 38.415 qmax 54.936 54.887 54.908 amean 46.470 46.470 46.469 amin 46.062 46.066 46.066 amax 46.929 46.931 46.929 emean 0.156 0.156 0.156 emin 0.142 0.142 0.142 emax 0.171 0.171 0.171 imean 0.970 0.969 0.969 imin 0.259 0.259 0.259 imax 1.496 1.495 1.495 excite_mean 0.157 0.157 0.157 fracstop 1.000 1.000 1.000 cjmean 3.101 3.101 3.101 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 171.6 171.4 171.5 kozaiamp 180.0 180.0 180.0