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: 03QJ91 # Created Sat Nov 23 02:08:31 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 20 observations of 20 # Arc: 18.05y # First observation: 2003/08/24 # Last observation: 2021/09/12 # Chi-squared of fit: 52.20 DOF: 34 RMS: 0.29 # Min/Max residuals: -0.49 0.86 # Exact a, adot, b, bdot, g, gdot: 1.592100E-05 2.120198E-02 -9.396099E-07 -5.616124E-04 2.278174E-02 -9.201912E-04 # Covariance matrix: 2.3410E-13 -1.3496E-14 -2.7162E-15 1.1393E-16 2.5840E-13 -1.6838E-14 -1.3496E-14 2.9256E-14 2.3690E-18 -7.2866E-16 1.0869E-13 6.9312E-14 -2.7162E-15 2.3690E-18 1.4143E-13 -1.0353E-14 -7.9496E-15 2.6921E-16 1.1393E-16 -7.2866E-16 -1.0353E-14 1.6214E-15 -2.7728E-15 -1.8294E-15 2.5840E-13 1.0869E-13 -7.9496E-15 -2.7728E-15 1.2206E-12 2.4617E-13 -1.6838E-14 6.9312E-14 2.6921E-16 -1.8294E-15 2.4617E-13 1.7459E-13 # lat0 lon0 xBary yBary zBary JD0 -2.025018 -43.728583 -0.246902 -0.034762 -0.984335 2452875.553633 # Heliocentric elements and errors Epoch: 2452876.5000 = 2003/08/25 Mean Anomaly: 245.68011 +/- 0.187 Argument of Peri: 351.43940 +/- 0.168 Long of Asc Node: 83.82265 +/- 0.002 Inclination: 2.48735 +/- 0.000 Eccentricity: 0.04235701 +/- 0.0001 Semi-Major Axis: 44.04304165 +/- 0.0079 Time of Perihelion: 2486779.1516 +/- 58.8 Perihelion: 42.17750990 +/- 0.0079 Aphelion: 45.90857340 +/- 0.0086 Period (y) 292.2969 +/- 0.08 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 32.57963959 +/- 0.0015 Ecliptic Y -30.82131046 +/- 0.0015 Ecliptic Z -1.55110498 +/- 0.0001 Ecliptic XDOT 0.00167444 +/- 0.0000 Ecliptic YDOT 0.00191357 +/- 0.0000 Ecliptic ZDOT -0.00006337 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 44.87531848 +/- 0.0015 Geocenter to KBO 43.89486207 +/- 0.0021 # Hcoef: 6.81
The following table shows the complete astrometric record for 03QJ91. 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 (03QJ91) followed by the observatory code and reference code for the source of the astrometry.
2003 08 24.05289 21 17 27.49 -17 53 28.0 22.4R 03QJ91 807 Ci4137 2003 08 25.06814 21 17 23.06 -17 53 47.6 03QJ91 807 Ci4137 2003 08 25.15384 21 17 22.68 -17 53 49.3 03QJ91 807 Ci4137 2003 08 26.20107 21 17 18.15 -17 54 09.3 03QJ91 807 Ci4137 2003 10 01.27074 21 15 10.26 -18 02 56.8 22.7R 03QJ91 568 Ci6964 2003 10 02.25084 21 15 07.87 -18 03 05.4 03QJ91 568 Ci6964 2003 10 02.33532 21 15 07.65 -18 03 06.5 03QJ91 568 Ci6964 2006 08 21.17719 21 32 18.23 -16 49 56.9 22.0R 03QJ91 807 Ct0451 2006 08 21.26808 21 32 17.83 -16 49 58.8 03QJ91 807 Ct0451 2006 10 19.10013 21 29 06.81 -17 03 43.7 23.6R 03QJ91 695 Ct0451 2006 10 20.10237 21 29 05.52 -17 03 47.3 03QJ91 695 Ct0451 2006 10 20.21783 21 29 05.37 -17 03 47.7 03QJ91 695 Ct0452 2014 09 26.17168 22 08 33.59 -13 55 44.0 23.4R 03QJ91 695 C~1LJE 2014 09 26.23310 22 08 33.29 -13 55 45.1 03QJ91 695 C~1LJE 2014 09 26.29280 22 08 33.10 -13 55 46.4 03QJ91 695 C~1LJE 2014 10 22.09851 22 07 21.71 -14 01 16.4 23.4R 03QJ91 G37 C~1BxD 2014 10 22.20693 22 07 21.48 -14 01 17.1 03QJ91 G37 C~1BxD 2021 09 12.184010 22 42 51.068 -10 47 42.07 23.5G 03QJ91 G37 C~553k 2021 09 12.241210 22 42 50.825 -10 47 43.47 03QJ91 G37 C~553k 2021 09 12.298550 22 42 50.573 -10 47 44.79 03QJ91 G37 C~553k
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 -0.28 0.00 0.03
2 0.0028 0.00 -0.30 0.00 -0.00
3 0.0030 0.00 -0.31 0.00 -0.05
4 0.0059 0.00 -0.11 0.00 -0.06
5 0.1046 0.00 0.55 0.00 -0.06
6 0.1073 0.00 0.61 0.00 0.07
7 0.1075 0.00 0.47 0.00 -0.29
8 2.9928 0.00 0.21 0.00 0.07
9 2.9931 0.00 0.37 0.00 0.09
10 3.1541 0.00 -0.43 0.00 0.07
11 3.1569 0.00 -0.49 0.00 0.03
12 3.1572 0.00 -0.47 0.00 0.01
13 11.0914 0.00 0.86 0.00 0.13
14 11.0915 0.00 -0.30 0.00 0.12
15 11.0917 0.00 0.09 0.00 -0.13
16 11.1623 0.00 -0.01 0.00 0.09
17 11.1626 0.00 -0.32 0.00 0.18
18 18.0537 0.00 -0.04 0.00 -0.14
19 18.0539 0.00 0.02 0.00 -0.12
20 18.0541 0.00 -0.04 0.00 -0.02
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.
03QJ91 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.364 44.364 44.364 ecceobj 0.043 0.043 0.043 incobj 2.489 2.489 2.489 qmin 41.364 41.365 41.362 qmax 47.480 47.494 47.491 amean 44.320 44.320 44.320 amin 43.977 43.976 43.972 amax 44.679 44.687 44.677 emean 0.048 0.048 0.048 emin 0.033 0.033 0.032 emax 0.063 0.063 0.063 imean 0.921 0.921 0.921 imin 0.201 0.201 0.201 imax 1.448 1.448 1.449 excite_mean 0.051 0.051 0.051 fracstop 1.000 1.000 1.000 cjmean 3.102 3.102 3.102 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 164.5 164.6 164.5 kozaiamp 180.0 180.0 179.9