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: 04QG29 # Created Tue Apr 1 01:08:40 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 17 observations of 17 # Arc: 20.12y # First observation: 2004/08/19 # Last observation: 2024/10/01 # Chi-squared of fit: 14.86 DOF: 28 RMS: 0.17 # Min/Max residuals: -0.33 0.30 # Exact a, adot, b, bdot, g, gdot: 1.668426E-05 2.726050E-02 8.322144E-06 1.396500E-02 2.719382E-02 2.496853E-03 # Covariance matrix: 1.6204E-13 -2.4957E-14 1.0153E-14 -9.9820E-15 6.8817E-14 -3.5881E-14 -2.4957E-14 2.5175E-14 -1.1923E-14 1.2263E-14 2.9553E-14 4.1914E-14 1.0153E-14 -1.1923E-14 1.3568E-13 -1.4045E-14 -7.7487E-15 -2.1427E-14 -9.9820E-15 1.2263E-14 -1.4045E-14 7.7367E-15 1.0037E-14 2.1908E-14 6.8817E-14 2.9553E-14 -7.7487E-15 1.0037E-14 4.4004E-13 2.6400E-14 -3.5881E-14 4.1914E-14 -2.1427E-14 2.1908E-14 2.6400E-14 7.5379E-14 # lat0 lon0 xBary yBary zBary JD0 -0.348640 -40.973411 -0.135903 -0.006067 -1.006973 2453236.863303 # Heliocentric elements and errors Epoch: 2453236.5000 = 2004/08/19 Mean Anomaly: 16.21467 +/- 0.006 Argument of Peri: 332.79713 +/- 0.008 Long of Asc Node: 319.89058 +/- 0.000 Inclination: 27.19300 +/- 0.000 Eccentricity: 0.23322396 +/- 0.0001 Semi-Major Axis: 48.29035209 +/- 0.0064 Time of Perihelion: 2447715.7936 +/- 2.3 Perihelion: 37.02788492 +/- 0.0063 Aphelion: 59.55281925 +/- 0.0088 Period (y) 335.5821 +/- 0.07 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 28.60935043 +/- 0.0007 Ecliptic Y -24.66793534 +/- 0.0006 Ecliptic Z -0.22342293 +/- 0.0000 Ecliptic XDOT 0.00199399 +/- 0.0000 Ecliptic YDOT 0.00189474 +/- 0.0000 Ecliptic ZDOT 0.00140454 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 37.77628427 +/- 0.0006 Geocenter to KBO 36.77304686 +/- 0.0009 # Hcoef: 7.82
The following table shows the complete astrometric record for 04QG29. 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 (04QG29) followed by the observatory code and reference code for the source of the astrometry.
2004 08 19.36256 21 26 15.46 -15 27 01.4 23.6g 04QG29 568 C~0X5Y 2004 08 19.38878 21 26 15.32 -15 27 01.9 23.4g 04QG29 568 C~0X5Y 2004 08 19.41977 21 26 15.14 -15 27 02.5 23.4g 04QG29 568 C~0X5Y 2004 08 20.39594 21 26 09.92 -15 27 19.1 23.5g 04QG29 568 C~0X5Y 2004 10 13.24660 21 22 31.59 -15 36 47.3 23.9i 04QG29 568 C~0X5Y 2004 10 13.30584 21 22 31.44 -15 36 47.2 24.0i 04QG29 568 C~0X5Y 2004 10 13.36620 21 22 31.33 -15 36 47.4 24.0i 04QG29 568 C~0X5Y 2005 10 04.13711 21 27 57.51 -14 22 34.9 23.4R 04QG29 675 C~0X5Y 2005 10 04.19211 21 27 57.34 -14 22 35.2 04QG29 675 C~0X5Y 2006 07 20.44300 21 38 55.99 -12 48 44.2 04QG29 568 C~0X5Y 2006 07 20.46941 21 38 55.85 -12 48 44.6 23.7r 04QG29 568 C~0X5Y 2006 07 20.49586 21 38 55.73 -12 48 45.0 23.7r 04QG29 568 C~0X5Y 2014 10 22.10350 22 09 30.85 -03 28 35.2 23.4R 04QG29 G37 C~1BxG 2014 10 22.21181 22 09 30.59 -03 28 37.0 04QG29 G37 C~1BxG 2024 10 01.128530 22 53 31.061 +08 10 00.40 23.6G 04QG29 G37 C~8Gig 2024 10 01.171200 22 53 30.883 +08 09 59.12 04QG29 G37 C~8Gig 2024 10 01.213250 22 53 30.703 +08 09 57.94 04QG29 G37 C~8Gig
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 -0.16 0.00 -0.09
2 0.0001 0.00 -0.11 0.00 -0.14
3 0.0002 0.00 -0.27 0.00 -0.21
4 0.0028 0.00 -0.17 0.00 -0.22
5 0.1503 0.00 0.30 0.00 0.14
6 0.1504 0.00 -0.07 0.00 0.29
7 0.1506 0.00 0.19 0.00 0.13
8 1.1246 0.00 0.10 0.00 0.01
9 1.1248 0.00 0.08 0.00 0.09
10 1.9167 0.00 0.26 0.00 -0.03
11 1.9168 0.00 0.07 0.00 -0.04
12 1.9169 0.00 0.18 0.00 -0.05
13 10.1731 0.00 -0.21 0.00 0.22
14 10.1734 0.00 -0.33 0.00 0.13
15 20.1171 0.00 0.00 0.00 -0.05
16 20.1172 0.00 0.10 0.00 -0.09
17 20.1173 0.00 0.13 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.
04QG29 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 48.594 48.594 48.594 ecceobj 0.237 0.237 0.237 incobj 27.118 27.118 27.118 qmin 35.879 35.878 35.876 qmax 61.969 61.972 61.974 amean 48.603 48.603 48.603 amin 48.157 48.152 48.162 amax 49.162 49.165 49.162 emean 0.241 0.241 0.241 emin 0.224 0.224 0.223 emax 0.261 0.261 0.261 imean 28.323 28.322 28.323 imin 27.822 27.822 27.822 imax 28.812 28.808 28.810 excite_mean 0.532 0.532 0.532 fracstop 1.000 1.000 1.000 cjmean 2.790 2.790 2.790 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 182.3 182.3 182.3 kozaiamp 179.9 180.0 180.0