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: 04HD79
# Created Wed Dec 25 02:08:33 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 26 observations of 26
# Arc: 17.13y
# First observation: 2004/04/22
# Last observation: 2021/06/10
# Chi-squared of fit: 17.18 DOF: 46 RMS: 0.14
# Min/Max residuals: -0.69 0.35
# Exact a, adot, b, bdot, g, gdot:
1.282152E-05 1.941029E-02 3.171699E-06 1.501953E-04 2.156758E-02 -7.390957E-05
# Covariance matrix:
1.8031E-13 -1.4028E-14 3.4827E-16 -8.3802E-17 1.7605E-13 -4.0330E-14
-1.4028E-14 1.6650E-14 -8.9034E-17 1.1005E-16 3.8165E-14 4.9555E-14
3.4827E-16 -8.9034E-17 1.0432E-13 -9.6589E-15 5.7694E-16 -4.0980E-16
-8.3802E-17 1.1005E-16 -9.6589E-15 1.9100E-15 1.5654E-16 3.8752E-16
1.7605E-13 3.8165E-14 5.7694E-16 1.5654E-16 5.6884E-13 6.3990E-14
-4.0330E-14 4.9555E-14 -4.0980E-16 3.8752E-16 6.3990E-14 1.7540E-13
# lat0 lon0 xBary yBary zBary JD0
1.250161 -130.694213 0.283121 0.021045 -0.962363 2453118.058673
# Heliocentric elements and errors
Epoch: 2453118.5000 = 2004/04/23
Mean Anomaly: 194.73663 +/- 0.076
Argument of Peri: 235.89747 +/- 0.067
Long of Asc Node: 159.11965 +/- 0.006
Inclination: 1.30483 +/- 0.000
Eccentricity: 0.02798914 +/- 0.0001
Semi-Major Axis: 46.08046248 +/- 0.0059
Time of Perihelion: 2505568.7745 +/- 27.0
Perihelion: 44.79070976 +/- 0.0072
Aphelion: 47.37021521 +/- 0.0075
Period (y) 312.8120 +/- 0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -31.07005031 +/- 0.0011
Ecliptic Y -35.68978934 +/- 0.0012
Ecliptic Z 1.01177708 +/- 0.0000
Ecliptic XDOT 0.00187155 +/- 0.0000
Ecliptic YDOT -0.00160608 +/- 0.0000
Ecliptic ZDOT 0.00001899 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 47.33004558 +/- 0.0012
Geocenter to KBO 46.36591299 +/- 0.0016
# Hcoef: 5.70
The following table shows the complete astrometric record for 04HD79. 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 (04HD79) followed by the observatory code and reference code for the source of the astrometry.
2004 04 22.55793 15 08 49.91 -16 21 00.3 23.6g 04HD79 568 C~0VDp 2004 04 24.43262 15 08 42.15 -16 20 27.1 22.5g 04HD79 568 C~0VDp 2004 04 25.43836 15 08 37.96 -16 20 09.8 22.5g 04HD79 568 C~0VDp 2004 04 25.46536 15 08 37.85 -16 20 09.2 22.6g 04HD79 568 C~0VDp 2004 04 25.48800 15 08 37.76 -16 20 08.7 22.7g 04HD79 568 C~0VDp 2004 07 08.26985 15 04 09.11 -16 02 25.9 22.2i 04HD79 568 C~0VDp 2004 07 08.33281 15 04 08.98 -16 02 25.5 22.3i 04HD79 568 C~0VDp 2004 07 08.39433 15 04 08.87 -16 02 25.2 22.6i 04HD79 568 C~0VDp 2005 05 08.42633 15 12 12.81 -16 33 54.5 22.4r 04HD79 568 C~0VDp 2005 05 08.45817 15 12 12.68 -16 33 53.7 22.4r 04HD79 568 C~0VDp 2005 05 08.49000 15 12 12.54 -16 33 53.1 22.3r 04HD79 568 C~0VDp 2005 05 10.48294 15 12 03.91 -16 33 18.6 22.2r 04HD79 568 C~0VDp 2006 05 03.30623 15 17 06.49 -16 52 35.2 22.1r 04HD79 695 C~0VDp 2006 05 03.36602 15 17 06.23 -16 52 34.1 22.4r 04HD79 695 C~0VDp 2006 05 04.22475 15 17 02.54 -16 52 19.4 22.3r 04HD79 695 C~0VDp 2013 06 08.00878 15 46 23.90 -18 33 13.9 22.1R 04HD79 304 C~0snk 2013 06 08.07256 15 46 23.62 -18 33 13.2 04HD79 304 C~0snk 2013 06 08.27956 15 46 22.74 -18 33 10.6 04HD79 304 C~0snk 2013 06 08.99615 15 46 19.78 -18 33 01.4 04HD79 304 C~0snk 2013 06 09.06309 15 46 19.50 -18 33 00.6 04HD79 304 C~0snk 2013 06 09.20311 15 46 18.91 -18 32 58.8 04HD79 304 C~0snk 2013 06 09.99858 15 46 15.63 -18 32 48.7 04HD79 304 C~0snk 2013 06 10.06262 15 46 15.38 -18 32 47.9 04HD79 304 C~0snk 2013 06 10.12578 15 46 15.10 -18 32 47.1 04HD79 304 C~0snk 2021 06 09.076419 16 23 42.11 -20 14 42.5 04HD79 W84 C~839G 2021 06 10.186012 16 23 37.16 -20 14 31.4 04HD79 W84 C~839G
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 0.11 0.00 -0.69
2 0.0051 0.00 -0.13 0.00 0.09
3 0.0079 0.00 -0.07 0.00 -0.11
4 0.0080 0.00 0.01 0.00 0.02
5 0.0080 0.00 0.10 0.00 0.12
6 0.2100 0.00 0.01 0.00 0.12
7 0.2102 0.00 -0.06 0.00 0.10
8 0.2104 0.00 0.11 0.00 -0.02
9 1.0428 0.00 -0.28 0.00 -0.04
10 1.0428 0.00 -0.12 0.00 0.21
11 1.0429 0.00 -0.11 0.00 0.25
12 1.0484 0.00 0.35 0.00 0.09
13 2.0281 0.00 0.01 0.00 -0.10
14 2.0282 0.00 0.02 0.00 -0.01
15 2.0306 0.00 -0.05 0.00 0.12
16 9.1265 0.00 0.11 0.00 0.08
17 9.1267 0.00 -0.04 0.00 -0.02
18 9.1272 0.00 -0.07 0.00 -0.09
19 9.1292 0.00 -0.01 0.00 -0.03
20 9.1294 0.00 0.01 0.00 -0.07
21 9.1298 0.00 0.02 0.00 -0.05
22 9.1319 0.00 -0.08 0.00 -0.02
23 9.1321 0.00 0.18 0.00 -0.01
24 9.1323 0.00 -0.06 0.00 -0.00
25 17.1294 0.00 0.04 0.00 0.01
26 17.1325 0.00 -0.06 0.00 0.05
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.
04HD79 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 45.672 45.672 45.672 ecceobj 0.038 0.038 0.038 incobj 1.307 1.307 1.307 qmin 43.631 43.632 43.627 qmax 48.589 48.588 48.590 amean 46.005 46.005 46.005 amin 45.638 45.640 45.638 amax 46.381 46.381 46.381 emean 0.036 0.036 0.036 emin 0.023 0.022 0.023 emax 0.048 0.048 0.048 imean 1.619 1.619 1.619 imin 1.238 1.239 1.238 imax 1.946 1.945 1.946 excite_mean 0.046 0.046 0.046 fracstop 1.000 1.000 1.000 cjmean 3.124 3.124 3.124 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 194.6 194.7 194.6 kozaiamp 180.0 180.0 180.0