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: 03QE91 # Created Sun Dec 22 02:08:31 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 19 observations of 19 # Arc: 17.96y # First observation: 2003/08/23 # Last observation: 2021/08/08 # Chi-squared of fit: 52.23 DOF: 32 RMS: 0.29 # Min/Max residuals: -0.64 0.51 # Exact a, adot, b, bdot, g, gdot: 1.609899E-05 2.483170E-02 2.511101E-08 1.180389E-03 2.488074E-02 6.688391E-04 # Covariance matrix: 2.0262E-13 -4.9839E-14 2.5708E-15 -1.8452E-15 3.3941E-14 -8.2911E-14 -4.9839E-14 3.5033E-14 -2.7376E-15 1.6159E-15 4.7014E-14 7.1472E-14 2.5708E-15 -2.7376E-15 1.3099E-13 -9.9713E-15 -6.5987E-15 -5.9676E-15 -1.8452E-15 1.6159E-15 -9.9713E-15 1.8225E-15 2.6494E-15 3.4815E-15 3.3941E-14 4.7014E-14 -6.5987E-15 2.6494E-15 4.1008E-13 1.1225E-13 -8.2911E-14 7.1472E-14 -5.9676E-15 3.4815E-15 1.1225E-13 1.5382E-13 # lat0 lon0 xBary yBary zBary JD0 -2.218860 -24.528655 0.106184 -0.039062 -1.009326 2452874.642723 # Heliocentric elements and errors Epoch: 2452874.5000 = 2003/08/23 Mean Anomaly: 31.24199 +/- 0.055 Argument of Peri: 287.52534 +/- 0.060 Long of Asc Node: 13.77759 +/- 0.001 Inclination: 3.47852 +/- 0.000 Eccentricity: 0.04381220 +/- 0.0001 Semi-Major Axis: 42.77608804 +/- 0.0044 Time of Perihelion: 2444006.2850 +/- 15.5 Perihelion: 40.90197341 +/- 0.0049 Aphelion: 44.65020266 +/- 0.0053 Period (y) 279.7756 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 37.40946654 +/- 0.0009 Ecliptic Y -17.18473106 +/- 0.0004 Ecliptic Z -1.55609700 +/- 0.0000 Ecliptic XDOT 0.00120059 +/- 0.0000 Ecliptic YDOT 0.00244753 +/- 0.0000 Ecliptic ZDOT 0.00012712 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 41.19712826 +/- 0.0009 Geocenter to KBO 40.19174872 +/- 0.0010 # Hcoef: 7.33
The following table shows the complete astrometric record for 03QE91. 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 (03QE91) followed by the observatory code and reference code for the source of the astrometry.
2003 08 23.14198 22 32 27.12 -11 34 05.6 22.5R 03QE91 807 Ci4137 2003 08 23.21118 22 32 26.76 -11 34 07.2 03QE91 807 Ci4137 2003 08 24.22582 22 32 22.11 -11 34 34.2 03QE91 807 Ci4137 2003 10 23.01853 22 28 26.19 -11 55 14.2 23.4R 03QE91 304 Ci9429 2003 10 23.06236 22 28 26.08 -11 55 14.6 03QE91 304 Ci9429 2004 07 17.21052 22 40 07.79 -10 44 00.2 22.7R 03QE91 807 Cs2453 2004 07 17.31127 22 40 07.52 -10 44 02.0 03QE91 807 Cs2453 2006 08 21.18903 22 48 18.37 -09 46 18.9 22.6R 03QE91 807 Cs2453 2006 08 22.21960 22 48 13.72 -09 46 46.3 03QE91 807 Cs2453 2006 08 23.14697 22 48 09.59 -09 47 11.7 03QE91 807 Cs2453 2006 08 23.21392 22 48 09.26 -09 47 13.7 03QE91 807 Cs2453 2006 10 19.12417 22 44 13.73 -10 09 11.0 23.3R 03QE91 695 Ct0451 2006 10 19.21879 22 44 13.42 -10 09 11.9 03QE91 695 Ct0451 2006 10 20.12660 22 44 10.83 -10 09 24.2 03QE91 695 Ct0451 2014 09 26.28801 23 26 36.42 -05 07 49.3 23.9R 03QE91 695 C~1LJE 2014 09 26.34456 23 26 36.14 -05 07 50.1 03QE91 695 C~1LJE 2021 08 08.356240 00 04 43.155 -00 24 59.04 23.9G 03QE91 G37 C~4xMn 2021 08 08.404900 00 04 43.016 -00 24 59.97 03QE91 G37 C~4xMn 2021 08 08.450900 00 04 42.864 -00 25 00.86 03QE91 G37 C~4xMn
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 -0.12 0.00 0.11
2 0.0002 0.00 -0.64 0.00 0.36
3 0.0030 0.00 0.09 0.00 0.36
4 0.1667 0.00 0.31 0.00 -0.45
5 0.1668 0.00 0.26 0.00 -0.41
6 0.9009 0.00 -0.24 0.00 0.17
7 0.9012 0.00 0.51 0.00 0.40
8 2.9953 0.00 -0.10 0.00 -0.13
9 2.9982 0.00 -0.41 0.00 0.30
10 3.0007 0.00 0.27 0.00 -0.00
11 3.0009 0.00 -0.06 0.00 -0.19
12 3.1567 0.00 0.25 0.00 -0.61
13 3.1570 0.00 -0.16 0.00 -0.15
14 3.1594 0.00 -0.01 0.00 0.29
15 11.0942 0.00 0.35 0.00 -0.48
16 11.0943 0.00 -0.05 0.00 0.23
17 17.9609 0.00 -0.03 0.00 0.09
18 17.9610 0.00 0.04 0.00 0.08
19 17.9611 0.00 -0.20 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.
03QE91 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.174 43.174 43.173 ecceobj 0.051 0.051 0.051 incobj 3.465 3.465 3.465 qmin 40.320 40.321 40.319 qmax 46.006 46.005 46.008 amean 43.033 43.033 43.033 amin 42.709 42.709 42.704 amax 43.380 43.380 43.381 emean 0.042 0.042 0.042 emin 0.020 0.020 0.020 emax 0.061 0.061 0.061 imean 3.188 3.188 3.188 imin 2.192 2.191 2.192 imax 4.121 4.121 4.121 excite_mean 0.070 0.070 0.070 fracstop 1.000 1.000 1.000 cjmean 3.084 3.084 3.084 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 192.0 191.9 192.1 kozaiamp 180.0 180.0 180.0