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: 04HQ79
# Created Wed Dec 25 02:08:33 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 21 observations of 21
# Arc: 11.07y
# First observation: 2004/04/26
# Last observation: 2015/05/24
# Chi-squared of fit: 31.87 DOF: 36 RMS: 0.22
# Min/Max residuals: -0.62 0.29
# Exact a, adot, b, bdot, g, gdot:
2.019783E-05 3.466649E-02 -3.338843E-06 -3.891662E-03 2.812656E-02 -4.159717E-04
# Covariance matrix:
3.1023E-13 -1.5636E-13 -1.8113E-14 1.6266E-14 1.1833E-13 -3.4393E-13
-1.5636E-13 1.2073E-13 1.5056E-14 -1.3352E-14 -3.0437E-14 2.8138E-13
-1.8113E-14 1.5056E-14 1.1951E-13 -1.7732E-14 -3.2345E-15 3.6691E-14
1.6266E-14 -1.3352E-14 -1.7732E-14 6.8679E-15 3.6190E-15 -3.2556E-14
1.1833E-13 -3.0437E-14 -3.2345E-15 3.6190E-15 3.0915E-13 -8.0487E-14
-3.4393E-13 2.8138E-13 3.6691E-14 -3.2556E-14 -8.0487E-14 6.8616E-13
# lat0 lon0 xBary yBary zBary JD0
0.934760 -151.012006 -0.133144 0.016304 -0.995596 2453121.841263
# Heliocentric elements and errors
Epoch: 2453122.5000 = 2004/04/27
Mean Anomaly: 359.54792 +/- 0.002
Argument of Peri: 173.15087 +/- 0.005
Long of Asc Node: 37.24375 +/- 0.000
Inclination: 6.46331 +/- 0.000
Eccentricity: 0.42829994 +/- 0.0001
Semi-Major Axis: 63.93065568 +/- 0.0115
Time of Perihelion: 2453356.9628 +/- 50.4
Perihelion: 36.54915948 +/- 0.0088
Aphelion: 91.31215187 +/- 0.0175
Period (y) 511.1777 +/- 0.14
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -31.90529935 +/- 0.0006
Ecliptic Y -17.82549639 +/- 0.0003
Ecliptic Z 0.57991686 +/- 0.0000
Ecliptic XDOT 0.00166236 +/- 0.0000
Ecliptic YDOT -0.00294201 +/- 0.0000
Ecliptic ZDOT -0.00037930 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 36.55178635 +/- 0.0006
Geocenter to KBO 35.55362670 +/- 0.0007
# Hcoef: 7.81
The following table shows the complete astrometric record for 04HQ79. 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 (04HQ79) followed by the observatory code and reference code for the source of the astrometry.
2004 04 26.34052 13 49 07.64 -10 14 25.7 23.5g 04HQ79 568 C~0X5W 2004 04 26.36686 13 49 07.52 -10 14 25.3 23.3g 04HQ79 568 C~0X5W 2004 04 26.38811 13 49 07.40 -10 14 24.6 23.4g 04HQ79 568 C~0X5W 2004 06 20.29694 13 45 38.23 -09 57 48.8 23.4i 04HQ79 568 C~0X5W 2004 06 20.34855 13 45 38.13 -09 57 48.6 23.2i 04HQ79 568 C~0X5W 2004 06 20.39724 13 45 38.04 -09 57 48.1 23.2i 04HQ79 568 C~0X5W 2006 05 01.40343 14 03 19.25 -12 00 44.7 23.5r 04HQ79 568 C~0X5W 2006 05 01.43386 14 03 19.08 -12 00 44.0 23.4r 04HQ79 568 C~0X5W 2006 05 01.48652 14 03 18.81 -12 00 42.5 23.5r 04HQ79 568 C~0X5W 2006 05 02.33945 14 03 14.47 -12 00 21.4 04HQ79 568 C~0X5W 2006 05 26.222524 14 01 22.32 -11 51 25.6 04HQ79 645 C~1Qd2 2006 05 26.223353 14 01 22.32 -11 51 25.6 04HQ79 645 C~1Qd2 2006 05 26.225841 14 01 22.31 -11 51 25.5 04HQ79 645 C~1Qd2 2006 06 29.27445 13 59 44.02 -11 44 15.9 23.6r 04HQ79 568 C~0X5W 2006 06 29.28739 13 59 44.01 -11 44 16.1 23.9r 04HQ79 568 C~0X5W 2006 06 30.25492 13 59 42.68 -11 44 11.8 23.3r 04HQ79 568 C~0X5W 2007 02 21.46236 14 15 19.26 -13 15 19.5 23.3R 04HQ79 675 C~0X5W 2007 02 21.50974 14 15 19.20 -13 15 19.1 23.1R 04HQ79 675 C~0X5W 2015 05 20.05401 15 08 57.89 -19 13 49.2 04HQ79 W84 C~1Tii 2015 05 21.06141 15 08 52.59 -19 13 30.0 23.8V 04HQ79 W84 C~1Tii 2015 05 24.05296 15 08 36.96 -19 12 32.8 04HQ79 W84 C~1Tii
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 -0.05 0.00 0.27
2 0.0001 0.00 0.18 0.00 -0.00
3 0.0001 0.00 0.02 0.00 0.16
4 0.1505 0.00 0.12 0.00 0.22
5 0.1506 0.00 0.11 0.00 0.07
6 0.1507 0.00 0.15 0.00 0.24
7 2.0125 0.00 0.09 0.00 0.07
8 2.0126 0.00 -0.09 0.00 0.02
9 2.0127 0.00 -0.04 0.00 0.21
10 2.0151 0.00 -0.27 0.00 0.29
11 2.0804 0.00 -0.28 0.00 -0.60
12 2.0804 0.00 -0.23 0.00 -0.62
13 2.0805 0.00 -0.22 0.00 -0.57
14 2.1737 0.00 0.00 0.00 0.22
15 2.1737 0.00 0.15 0.00 -0.04
16 2.1764 0.00 0.01 0.00 0.07
17 2.8231 0.00 -0.08 0.00 -0.15
18 2.8232 0.00 0.20 0.00 -0.04
19 11.0629 0.00 0.01 0.00 0.10
20 11.0656 0.00 0.10 0.00 0.01
21 11.0738 0.00 -0.02 0.00 0.13
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.
04HQ79 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 62.639 62.639 62.639 ecceobj 0.417 0.417 0.417 incobj 6.488 6.488 6.488 qmin 35.686 35.751 35.705 qmax 94.461 92.566 92.435 amean 63.868 63.384 63.287 amin 62.467 62.442 62.422 amax 65.465 64.511 64.418 emean 0.428 0.423 0.422 emin 0.412 0.411 0.409 emax 0.443 0.436 0.435 imean 5.608 5.665 5.630 imin 5.132 5.159 5.131 imax 6.141 6.279 6.350 excite_mean 0.439 0.435 0.433 fracstop 1.000 1.000 1.000 cjmean 3.091 3.091 3.092 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 181.0 181.9 189.3 kozaiamp 180.0 180.0 180.0