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: 03QP91 # Created Fri Nov 22 02:08:29 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 32 observations of 32 # Arc: 16.19y # First observation: 2003/08/23 # Last observation: 2019/11/01 # Chi-squared of fit: 18.44 DOF: 58 RMS: 0.13 # Min/Max residuals: -0.33 0.37 # Exact a, adot, b, bdot, g, gdot: 1.501568E-05 2.617295E-02 1.387454E-06 2.429640E-03 2.672518E-02 2.572802E-03 # Covariance matrix: 3.1577E-13 -3.9650E-14 2.6029E-15 -2.1710E-15 5.5224E-14 -5.6819E-14 -3.9650E-14 2.1537E-14 -2.7299E-15 1.9049E-15 1.7212E-14 4.9809E-14 2.6029E-15 -2.7299E-15 2.6261E-13 -1.9470E-14 -2.8365E-15 -6.8161E-15 -2.1710E-15 1.9049E-15 -1.9470E-14 1.8755E-15 1.1829E-15 4.8165E-15 5.5224E-14 1.7212E-14 -2.8365E-15 1.1829E-15 1.7874E-13 3.0808E-14 -5.6819E-14 4.9809E-14 -6.8161E-15 4.8165E-15 3.0808E-14 1.2595E-13 # lat0 lon0 xBary yBary zBary JD0 -4.016505 -9.460561 0.362960 -0.066383 -0.946217 2452874.776343 # Heliocentric elements and errors Epoch: 2452874.5000 = 2003/08/23 Mean Anomaly: 117.72908 +/- 0.027 Argument of Peri: 195.70266 +/- 0.020 Long of Asc Node: 26.56473 +/- 0.000 Inclination: 6.55752 +/- 0.000 Eccentricity: 0.10317834 +/- 0.0000 Semi-Major Axis: 36.33677577 +/- 0.0020 Time of Perihelion: 2426710.7948 +/- 6.3 Perihelion: 32.58760770 +/- 0.0020 Aphelion: 40.08594384 +/- 0.0024 Period (y) 219.0422 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 37.69159334 +/- 0.0006 Ecliptic Y -6.64497300 +/- 0.0001 Ecliptic Z -2.62085782 +/- 0.0000 Ecliptic XDOT 0.00071199 +/- 0.0000 Ecliptic YDOT 0.00259301 +/- 0.0000 Ecliptic ZDOT 0.00023000 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.36244117 +/- 0.0006 Geocenter to KBO 37.41787573 +/- 0.0006 # Hcoef: 7.44
The following table shows the complete astrometric record for 03QP91. 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 (03QP91) followed by the observatory code and reference code for the source of the astrometry.
2003 08 23.27560 23 31 35.83 -07 26 23.5 21.8R 03QP91 807 Ci4137 2003 08 24.30123 23 31 31.17 -07 26 54.3 03QP91 807 Ci4137 2003 08 24.37297 23 31 30.84 -07 26 56.2 03QP91 807 Ci4137 2003 10 23.22639 23 26 53.74 -07 53 42.0 03QP91 304 Ci9429 2003 10 23.26417 23 26 53.62 -07 53 42.7 03QP91 304 Ci9429 2013 09 02.27282 00 22 27.564 -00 20 38.41 24.0g 03QP91 W84 C~52RL 2013 10 13.08917 00 19 15.682 -00 40 26.49 22.7z 03QP91 W84 C~52RL 2013 10 13.11349 00 19 15.574 -00 40 27.12 23.0i 03QP91 W84 C~52RL 2013 11 23.09694 00 16 44.697 -00 53 51.25 23.6r 03QP91 W84 C~52RL 2013 11 23.09831 00 16 44.703 -00 53 51.35 22.9i 03QP91 W84 C~52RL 2013 12 02.11176 00 16 27.499 -00 54 53.07 23.9g 03QP91 W84 C~52RL 2014 08 18.30926 00 28 26.166 +00 28 11.76 23.1z 03QP91 W84 C~52RL 2015 11 02.09796 00 27 51.776 +00 36 18.39 23.8r 03QP91 W84 C~52RL 2016 09 09.31225 00 36 55.866 +01 42 54.81 23.2r 03QP91 W84 C~52RL 2016 09 09.31362 00 36 55.863 +01 42 54.92 23.1i 03QP91 W84 C~52RL 2016 09 09.31500 00 36 55.848 +01 42 54.75 24.2g 03QP91 W84 C~52RL 2016 10 02.18440 00 35 08.563 +01 31 50.69 23.2i 03QP91 W84 C~52RL 2016 11 18.11310 00 31 50.514 +01 13 06.60 22.8r 03QP91 W84 C~52RL 2016 11 19.10268 00 31 47.575 +01 12 52.16 24.0g 03QP91 W84 C~52RL 2017 08 22.32458 00 43 04.617 +02 32 22.33 22.9i 03QP91 W84 C~52RL 2017 08 22.32596 00 43 04.628 +02 32 22.17 23.4r 03QP91 W84 C~52RL 2017 08 22.32734 00 43 04.595 +02 32 22.38 24.0g 03QP91 W84 C~52RL 2017 09 27.20200 00 40 32.549 +02 16 26.96 23.0r 03QP91 W84 C~52RL 2017 09 27.20337 00 40 32.546 +02 16 26.87 22.3i 03QP91 W84 C~52RL 2017 09 27.20473 00 40 32.537 +02 16 26.72 23.7g 03QP91 W84 C~52RL 2018 10 18.19480 00 43 50.863 +02 48 22.73 23.5i 03QP91 W84 C~52RL 2018 10 18.19616 00 43 50.866 +02 48 22.76 23.2z 03QP91 W84 C~52RL 2019 11 01.32124 00 47 45.67 +03 24 01.8 24.0g 03QP91 T09 C~7bAT 2019 11 01.34266 00 47 45.60 +03 24 01.5 24.1g 03QP91 T09 C~7bAT 2019 11 01.42186 00 47 45.24 +03 23 59.4 24.1g 03QP91 T09 C~7bAT 2019 11 01.50543 00 47 44.88 +03 23 57.8 24.6g 03QP91 T09 C~7bAT 2019 11 01.51381 00 47 44.86 +03 23 56.9 24.2g 03QP91 T09 C~7bAT
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 0.09 0.00 0.05
2 0.0028 0.00 -0.21 0.00 -0.10
3 0.0030 0.00 -0.19 0.00 0.14
4 0.1669 0.00 -0.00 0.00 0.04
5 0.1670 0.00 0.30 0.00 -0.01
6 10.0287 0.00 0.30 0.00 -0.14
7 10.1405 0.00 -0.15 0.00 -0.10
8 10.1406 0.00 -0.04 0.00 -0.07
9 10.2528 0.00 -0.05 0.00 -0.06
10 10.2528 0.00 0.09 0.00 -0.14
11 10.2774 0.00 -0.22 0.00 0.11
12 10.9871 0.00 0.04 0.00 -0.00
13 12.1939 0.00 0.12 0.00 0.06
14 13.0487 0.00 0.06 0.00 -0.01
15 13.0487 0.00 0.10 0.00 0.14
16 13.0487 0.00 -0.03 0.00 0.01
17 13.1113 0.00 0.10 0.00 -0.11
18 13.2398 0.00 0.17 0.00 0.01
19 13.2425 0.00 -0.03 0.00 0.07
20 13.9988 0.00 -0.03 0.00 0.04
21 13.9988 0.00 0.20 0.00 -0.09
22 13.9988 0.00 -0.22 0.00 0.15
23 14.0970 0.00 -0.02 0.00 0.06
24 14.0970 0.00 0.04 0.00 0.01
25 14.0970 0.00 0.00 0.00 -0.10
26 15.1538 0.00 -0.13 0.00 0.02
27 15.1538 0.00 0.02 0.00 0.09
28 16.1918 0.00 -0.27 0.00 -0.10
29 16.1918 0.00 0.09 0.00 0.12
30 16.1921 0.00 -0.11 0.00 -0.06
31 16.1923 0.00 -0.05 0.00 0.37
32 16.1923 0.00 0.19 0.00 -0.33
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.
03QP91 quality flag:3 Type: 4:3E 4:3E 4:3E axisobj 36.645 36.645 36.645 ecceobj 0.098 0.098 0.098 incobj 6.534 6.534 6.534 qmin 31.747 31.747 31.747 qmax 41.596 41.595 41.597 amean 36.479 36.479 36.479 amin 36.170 36.170 36.170 amax 36.814 36.814 36.814 emean 0.106 0.106 0.106 emin 0.084 0.084 0.084 emax 0.130 0.130 0.130 imean 7.139 7.139 7.139 imin 6.370 6.370 6.370 imax 7.684 7.684 7.683 excite_mean 0.163 0.163 0.163 fracstop 1.000 1.000 1.000 cjmean 2.994 2.994 2.994 libcent 0 179.5 179.6 179.4 libamp 0 42.4 42.4 42.3 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 179.8 179.8 179.7 kozaiamp 180.0 180.0 179.9