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: 03QL91
# Created Sun Dec 22 02:08:31 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 59 observations of 59
# Arc: 18.11y
# First observation: 2003/08/25
# Last observation: 2021/10/04
# Chi-squared of fit: 29.00 DOF: 112 RMS: 0.12
# Min/Max residuals: -0.35 0.71
# Exact a, adot, b, bdot, g, gdot:
1.562036E-05 2.316441E-02 1.588143E-07 -6.053803E-04 2.399146E-02 -1.241970E-04
# Covariance matrix:
1.4917E-13 -4.4232E-14 -6.0803E-16 1.0133E-15 7.1786E-14 -9.4395E-14
-4.4232E-14 4.2522E-14 7.6460E-16 -1.1225E-15 -2.5867E-14 1.0387E-13
-6.0803E-16 7.6460E-16 9.7272E-14 -6.0749E-15 -2.2823E-16 1.8894E-15
1.0133E-15 -1.1225E-15 -6.0749E-15 5.2188E-16 6.7293E-16 -2.7742E-15
7.1786E-14 -2.5867E-14 -2.2823E-16 6.7293E-16 1.5122E-13 -6.4048E-14
-9.4395E-14 1.0387E-13 1.8894E-15 -2.7742E-15 -6.4048E-14 2.5671E-13
# lat0 lon0 xBary yBary zBary JD0
0.363293 -28.731611 -0.003692 0.006491 -1.015128 2452876.730483
# Heliocentric elements and errors
Epoch: 2452876.5000 = 2003/08/25
Mean Anomaly: 298.33610 +/- 0.040
Argument of Peri: 229.01570 +/- 0.042
Long of Asc Node: 164.59935 +/- 0.000
Inclination: 1.53883 +/- 0.000
Eccentricity: 0.00671459 +/- 0.0001
Semi-Major Axis: 42.82741331 +/- 0.0033
Time of Perihelion: 2470411.6589 +/- 15.0
Perihelion: 42.53984500 +/- 0.0041
Aphelion: 43.11498162 +/- 0.0042
Period (y) 280.2793 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 37.43842069 +/- 0.0006
Ecliptic Y -20.51676345 +/- 0.0003
Ecliptic Z 0.26427912 +/- 0.0000
Ecliptic XDOT 0.00125344 +/- 0.0000
Ecliptic YDOT 0.00231889 +/- 0.0000
Ecliptic ZDOT -0.00006900 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 42.69242427 +/- 0.0005
Geocenter to KBO 41.68154649 +/- 0.0007
# Hcoef: 7.01
The following table shows the complete astrometric record for 03QL91. 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 (03QL91) followed by the observatory code and reference code for the source of the astrometry.
2003 08 25.22974 22 12 40.28 -10 41 02.6 21.9R 03QL91 807 Ci4137 2003 08 26.21790 22 12 35.82 -10 41 27.5 03QL91 807 Ci4137 2003 08 26.32469 22 12 35.34 -10 41 30.4 03QL91 807 Ci4137 2003 09 28.21164 22 10 18.06 -10 54 34.0 22.8R 03QL91 688 Ci6257 2003 09 28.33720 22 10 17.66 -10 54 36.3 03QL91 688 Ci6257 2003 10 23.01618 22 09 09.21 -11 01 15.0 23.1R 03QL91 304 Ci9429 2003 10 23.04322 22 09 09.16 -11 01 15.4 03QL91 304 Ci9429 2003 10 23.14171 22 09 08.98 -11 01 16.8 22.6R 03QL91 695 Cj8802 2003 10 24.17136 22 09 07.09 -11 01 28.0 03QL91 695 Cj8802 2004 07 17.30741 22 20 20.98 -09 59 43.3 03QL91 807 C~0Col 2004 08 12.28135 22 18 39.31 -10 09 26.7 22.0R 03QL91 807 Cl8405 2004 08 12.35092 22 18 38.99 -10 09 28.3 03QL91 807 Cl8405 2004 10 10.16522 22 14 40.60 -10 32 27.5 22.9R 03QL91 695 Cl8405 2004 10 10.29698 22 14 40.21 -10 32 29.7 03QL91 695 Cl8405 2004 11 10.14154 22 13 48.85 -10 37 42.8 23.0R 03QL91 695 Cl9847 2004 11 11.11617 22 13 48.55 -10 37 45.3 03QL91 695 Cl9847 2014 07 29.38518 23 09 43.45 -05 24 53.7 22.9R 03QL91 G37 C~16aI 2014 07 29.43316 23 09 43.29 -05 24 54.6 03QL91 G37 C~16aI 2019 08 28.21047 23 32 37.29 -03 10 48.6 23.8V 03QL91 W84 C~3GHs 2019 08 28.23217 23 32 37.20 -03 10 48.8 03QL91 W84 C~3GHs 2019 08 28.23734 23 32 37.17 -03 10 49.0 03QL91 W84 C~3GHs 2019 08 28.24595 23 32 37.13 -03 10 49.2 03QL91 W84 C~3GHs 2019 08 28.25284 23 32 37.10 -03 10 49.5 03QL91 W84 C~3GHs 2019 08 28.25974 23 32 37.07 -03 10 49.8 03QL91 W84 C~3GHs 2019 08 28.26662 23 32 37.04 -03 10 49.7 03QL91 W84 C~3GHs 2019 08 28.27180 23 32 37.02 -03 10 49.9 03QL91 W84 C~3GHs 2019 08 28.27871 23 32 37.00 -03 10 50.5 03QL91 W84 C~3GHs 2019 08 28.28042 23 32 36.98 -03 10 50.2 03QL91 W84 C~3GHs 2019 08 28.28733 23 32 36.95 -03 10 50.3 03QL91 W84 C~3GHs 2019 08 28.32901 23 32 36.78 -03 10 51.6 03QL91 W84 C~3GHs 2019 08 28.33591 23 32 36.75 -03 10 51.6 03QL91 W84 C~3GHs 2019 08 28.34111 23 32 36.73 -03 10 51.8 03QL91 W84 C~3GHs 2019 08 28.34807 23 32 36.70 -03 10 52.2 03QL91 W84 C~3GHs 2019 08 28.34979 23 32 36.70 -03 10 52.0 03QL91 W84 C~3GHs 2019 08 28.35669 23 32 36.66 -03 10 52.2 03QL91 W84 C~3GHs 2019 08 28.36359 23 32 36.63 -03 10 52.4 03QL91 W84 C~3GHs 2019 08 28.37050 23 32 36.60 -03 10 52.6 03QL91 W84 C~3GHs 2019 08 28.37591 23 32 36.58 -03 10 52.8 03QL91 W84 C~3GHs 2019 08 28.38279 23 32 36.56 -03 10 53.0 03QL91 W84 C~3GHs 2019 08 28.38451 23 32 36.55 -03 10 53.1 03QL91 W84 C~3GHs 2019 09 29.01843 23 30 20.11 -03 25 42.9 23.7V 03QL91 W84 C~3GHs 2019 09 29.03743 23 30 20.04 -03 25 43.5 03QL91 W84 C~3GHs 2019 09 29.04089 23 30 20.02 -03 25 43.7 23.8V 03QL91 W84 C~3GHs 2019 09 29.05123 23 30 19.97 -03 25 43.8 03QL91 W84 C~3GHs 2019 09 29.07020 23 30 19.89 -03 25 44.4 03QL91 W84 C~3GHs 2019 09 29.08399 23 30 19.83 -03 25 44.8 03QL91 W84 C~3GHs 2019 09 29.10293 23 30 19.75 -03 25 45.3 03QL91 W84 C~3GHs 2019 09 29.10638 23 30 19.74 -03 25 45.4 03QL91 W84 C~3GHs 2019 09 29.11673 23 30 19.69 -03 25 45.6 03QL91 W84 C~3GHs 2019 09 29.13570 23 30 19.61 -03 25 46.1 03QL91 W84 C~3GHs 2019 09 29.13915 23 30 19.59 -03 25 46.3 03QL91 W84 C~3GHs 2020 10 21.00568 23 33 48.63 -03 05 44.7 23.8V 03QL91 W84 C~4Iov 2020 10 21.06146 23 33 48.45 -03 05 46.0 03QL91 W84 C~4Iov 2020 10 21.08897 23 33 48.35 -03 05 46.5 03QL91 W84 C~4Iov 2020 10 21.14619 23 33 48.15 -03 05 47.9 03QL91 W84 C~4Iov 2021 10 04.00215 23 39 51.92 -02 28 54.6 23.7V 03QL91 W84 C~553k 2021 10 04.04430 23 39 51.75 -02 28 55.7 23.5V 03QL91 W84 C~553k 2021 10 04.08737 23 39 51.56 -02 28 56.8 23.8V 03QL91 W84 C~553k 2021 10 04.14136 23 39 51.33 -02 28 58.4 23.5V 03QL91 W84 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 -0.03 0.00 -0.13
2 0.0027 0.00 -0.15 0.00 0.26
3 0.0030 0.00 -0.03 0.00 0.08
4 0.0930 0.00 -0.13 0.00 0.11
5 0.0934 0.00 0.71 0.00 0.38
6 0.1609 0.00 -0.04 0.00 0.08
7 0.1610 0.00 0.00 0.00 -0.02
8 0.1613 0.00 0.05 0.00 -0.11
9 0.1641 0.00 -0.11 0.00 -0.05
10 0.8955 0.00 -0.03 0.00 -0.31
11 0.9666 0.00 0.09 0.00 -0.15
12 0.9668 0.00 -0.09 0.00 -0.02
13 1.1278 0.00 0.09 0.00 -0.15
14 1.1282 0.00 0.04 0.00 -0.13
15 1.2126 0.00 -0.12 0.00 0.05
16 1.2153 0.00 -0.15 0.00 0.06
17 10.9272 0.00 -0.01 0.00 0.11
18 10.9273 0.00 -0.10 0.00 0.18
19 16.0082 0.00 0.19 0.00 -0.29
20 16.0082 0.00 0.21 0.00 0.09
21 16.0082 0.00 0.08 0.00 0.03
22 16.0083 0.00 0.03 0.00 0.07
23 16.0083 0.00 0.01 0.00 -0.05
24 16.0083 0.00 -0.01 0.00 -0.16
25 16.0083 0.00 -0.02 0.00 0.12
26 16.0083 0.00 0.00 0.00 0.06
27 16.0083 0.00 0.14 0.00 -0.35
28 16.0084 0.00 -0.05 0.00 -0.00
29 16.0084 0.00 -0.07 0.00 0.08
30 16.0085 0.00 0.00 0.00 -0.09
31 16.0085 0.00 -0.01 0.00 0.09
32 16.0085 0.00 0.01 0.00 0.03
33 16.0085 0.00 -0.00 0.00 -0.18
34 16.0085 0.00 0.11 0.00 0.07
35 16.0086 0.00 -0.06 0.00 0.06
36 16.0086 0.00 -0.08 0.00 0.04
37 16.0086 0.00 -0.09 0.00 0.03
38 16.0086 0.00 -0.06 0.00 -0.03
39 16.0086 0.00 0.08 0.00 -0.04
40 16.0086 0.00 0.03 0.00 -0.09
41 16.0952 0.00 -0.05 0.00 0.06
42 16.0953 0.00 0.13 0.00 -0.02
43 16.0953 0.00 0.05 0.00 -0.12
44 16.0953 0.00 -0.03 0.00 0.06
45 16.0954 0.00 -0.01 0.00 -0.01
46 16.0954 0.00 -0.02 0.00 -0.03
47 16.0955 0.00 0.01 0.00 -0.01
48 16.0955 0.00 0.08 0.00 -0.02
49 16.0955 0.00 0.00 0.00 0.07
50 16.0956 0.00 0.03 0.00 0.09
51 16.0956 0.00 -0.05 0.00 -0.01
52 17.1575 0.00 -0.23 0.00 0.08
53 17.1577 0.00 -0.00 0.00 0.02
54 17.1577 0.00 -0.06 0.00 0.13
55 17.1579 0.00 -0.06 0.00 -0.00
56 18.1103 0.00 -0.08 0.00 -0.04
57 18.1104 0.00 0.04 0.00 0.01
58 18.1105 0.00 -0.08 0.00 0.08
59 18.1106 0.00 -0.09 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.
03QL91 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.203 43.203 43.203 ecceobj 0.014 0.014 0.014 incobj 1.533 1.533 1.533 qmin 41.403 41.404 41.403 qmax 44.919 44.916 44.921 amean 43.087 43.087 43.087 amin 42.757 42.756 42.760 amax 43.422 43.423 43.420 emean 0.020 0.020 0.020 emin 0.000 0.000 0.000 emax 0.035 0.035 0.035 imean 2.463 2.463 2.463 imin 1.467 1.467 1.467 imax 3.168 3.168 3.168 excite_mean 0.048 0.048 0.048 fracstop 1.000 1.000 1.000 cjmean 3.088 3.088 3.088 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 187.5 187.5 187.5 kozaiamp 179.9 180.0 180.0