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: 03QN91 # Created Wed Dec 25 02:08:26 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 17 observations of 17 # Arc: 20.04y # First observation: 2003/08/23 # Last observation: 2023/09/06 # Chi-squared of fit: 51.72 DOF: 28 RMS: 0.31 # Min/Max residuals: -1.31 0.41 # Exact a, adot, b, bdot, g, gdot: 1.649711E-05 2.892964E-02 2.087424E-07 1.622787E-03 2.702162E-02 7.172278E-04 # Covariance matrix: 3.0762E-13 -7.2826E-14 -9.4877E-17 -3.1436E-15 2.6156E-13 -9.7456E-14 -7.2826E-14 4.1052E-14 -1.3742E-15 2.1058E-15 -5.5846E-14 6.3083E-14 -9.4877E-17 -1.3742E-15 1.2153E-13 -7.9071E-15 -3.1136E-15 -2.3929E-15 -3.1436E-15 2.1058E-15 -7.9071E-15 1.7295E-15 -2.2802E-15 3.3955E-15 2.6156E-13 -5.5846E-14 -3.1136E-15 -2.2802E-15 4.4251E-13 -7.5346E-14 -9.7456E-14 6.3083E-14 -2.3929E-15 3.3955E-15 -7.5346E-14 1.0145E-13 # lat0 lon0 xBary yBary zBary JD0 -2.998045 -23.302902 0.127618 -0.052653 -1.006220 2452874.651443 # Heliocentric elements and errors Epoch: 2452874.5000 = 2003/08/23 Mean Anomaly: 10.22343 +/- 0.007 Argument of Peri: 305.00513 +/- 0.009 Long of Asc Node: 18.76817 +/- 0.001 Inclination: 4.33592 +/- 0.000 Eccentricity: 0.10426194 +/- 0.0001 Semi-Major Axis: 42.33680335 +/- 0.0052 Time of Perihelion: 2450017.1099 +/- 2.1 Perihelion: 37.92268627 +/- 0.0060 Aphelion: 46.75092043 +/- 0.0068 Period (y) 275.4770 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 34.81440736 +/- 0.0008 Ecliptic Y -15.13140777 +/- 0.0004 Ecliptic Z -1.93555546 +/- 0.0000 Ecliptic XDOT 0.00122883 +/- 0.0000 Ecliptic YDOT 0.00265424 +/- 0.0000 Ecliptic ZDOT 0.00016057 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.00983890 +/- 0.0008 Geocenter to KBO 37.00742389 +/- 0.0009 # Hcoef: 7.41
The following table shows the complete astrometric record for 03QN91. 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 (03QN91) followed by the observatory code and reference code for the source of the astrometry.
2003 08 23.15070 22 38 16.69 -11 50 13.2 21.7R 03QN91 807 Ci4137 2003 08 25.23376 22 38 06.36 -11 51 12.9 03QN91 807 Ci4137 2003 08 25.33868 22 38 05.84 -11 51 16.1 03QN91 807 Ci4137 2003 10 22.11010 22 33 57.90 -12 12 34.6 23.4R 03QN91 695 Cj4699 2003 10 22.20949 22 33 57.58 -12 12 35.4 03QN91 695 Cj4699 2004 08 12.29009 22 45 11.30 -11 02 57.9 22.4R 03QN91 807 Cl8405 2004 08 12.36015 22 45 10.96 -11 02 59.8 03QN91 807 Cl8405 2004 10 11.17003 22 40 34.51 -11 28 29.9 22.6R 03QN91 695 Cl8405 2004 10 11.27148 22 40 34.14 -11 28 31.6 03QN91 695 Cl8405 2004 10 12.13108 22 40 31.10 -11 28 45.5 23.7R 03QN91 695 Cl8405 2004 10 12.23634 22 40 30.72 -11 28 48.8 03QN91 695 Cl8405 2004 11 10.15227 22 39 23.51 -11 32 54.4 22.5R 03QN91 695 Cl9847 2004 11 11.12698 22 39 22.58 -11 32 54.6 03QN91 695 Cl9847 2014 07 29.40290 23 45 05.38 -03 38 07.4 23.4R 03QN91 G37 C~16aI 2014 07 29.45088 23 45 05.24 -03 38 08.3 03QN91 G37 C~16aI 2023 09 06.411840 00 33 36.364 +02 43 43.30 23.8G 03QN91 G37 C~7AOM 2023 09 06.451690 00 33 36.200 +02 43 42.03 03QN91 G37 C~7AOM
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 0.03 0.00 0.18
2 0.0057 0.00 -0.17 0.00 0.34
3 0.0060 0.00 -0.04 0.00 0.15
4 0.1642 0.00 -0.01 0.00 -0.09
5 0.1644 0.00 -0.68 0.00 0.16
6 0.9723 0.00 -0.00 0.00 0.10
7 0.9725 0.00 -0.17 0.00 0.17
8 1.1363 0.00 0.39 0.00 -0.08
9 1.1365 0.00 0.41 0.00 -0.08
10 1.1389 0.00 0.28 0.00 0.27
11 1.1392 0.00 0.24 0.00 -1.31
12 1.2183 0.00 -0.05 0.00 0.23
13 1.2210 0.00 0.01 0.00 -0.07
14 10.9329 0.00 -0.04 0.00 0.02
15 10.9331 0.00 -0.11 0.00 0.04
16 20.0390 0.00 -0.05 0.00 0.11
17 20.0392 0.00 0.06 0.00 -0.10
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.
03QN91 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 42.760 42.760 42.760 ecceobj 0.113 0.113 0.113 incobj 4.322 4.322 4.322 qmin 34.816 34.806 34.825 qmax 50.740 50.742 50.712 amean 42.590 42.590 42.587 amin 42.175 42.175 42.169 amax 43.052 43.054 43.038 emean 0.131 0.131 0.130 emin 0.093 0.093 0.087 emax 0.179 0.179 0.178 imean 5.277 5.280 5.283 imin 3.670 3.671 3.744 imax 6.636 6.637 6.637 excite_mean 0.161 0.161 0.160 fracstop 1.000 1.000 1.000 cjmean 3.052 3.052 3.053 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 181.1 181.0 181.7 kozaiamp 180.0 180.0 180.0