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: 11EZ90 # Created Sun Dec 22 02:09:14 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 69 observations of 69 # Arc: 9.91y # First observation: 2011/03/14 # Last observation: 2021/02/07 # Chi-squared of fit: 52.28 DOF: 132 RMS: 0.15 # Min/Max residuals: -0.53 0.42 # Exact a, adot, b, bdot, g, gdot: 1.871331E-05 2.749046E-02 2.358349E-06 5.810270E-03 2.672889E-02 -4.086290E-04 # Covariance matrix: 2.0662E-13 -6.4917E-14 1.5362E-14 -8.9336E-15 -3.0925E-14 -1.6375E-13 -6.4917E-14 2.7282E-14 -8.2906E-15 4.6775E-15 1.2951E-14 8.5308E-14 1.5362E-14 -8.2906E-15 1.2673E-13 -2.3123E-14 1.8670E-15 -2.9972E-14 -8.9336E-15 4.6775E-15 -2.3123E-14 5.4497E-15 2.7994E-15 1.7530E-14 -3.0925E-14 1.2951E-14 1.8670E-15 2.7994E-15 9.7188E-14 6.2922E-14 -1.6375E-13 8.5308E-14 -2.9972E-14 1.7530E-14 6.2922E-14 3.2161E-13 # lat0 lon0 xBary yBary zBary JD0 25.616513 150.308836 -0.389596 0.397328 -0.828722 2455634.867346 # Heliocentric elements and errors Epoch: 2455634.5000 = 2011/03/14 Mean Anomaly: 355.69752 +/- 0.016 Argument of Peri: 71.56370 +/- 0.018 Long of Asc Node: 86.91058 +/- 0.000 Inclination: 27.43665 +/- 0.000 Eccentricity: 0.06733548 +/- 0.0000 Semi-Major Axis: 40.99349270 +/- 0.0020 Time of Perihelion: 2456780.2422 +/- 8.2 Perihelion: 38.23317627 +/- 0.0024 Aphelion: 43.75380914 +/- 0.0026 Period (y) 262.4706 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -30.29373070 +/- 0.0003 Ecliptic Y 16.82582854 +/- 0.0002 Ecliptic Z 16.17530339 +/- 0.0002 Ecliptic XDOT -0.00113991 +/- 0.0000 Ecliptic YDOT -0.00258629 +/- 0.0000 Ecliptic ZDOT 0.00051857 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.24211451 +/- 0.0003 Geocenter to KBO 37.41275370 +/- 0.0004 # Hcoef: 6.50
The following table shows the complete astrometric record for 11EZ90. 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 (11EZ90) followed by the observatory code and reference code for the source of the astrometry.
2011 03 14.36658 10 52 26.985 +35 03 10.28 22.2G 11EZ90 F51 C~345U 2011 03 14.37978 10 52 26.935 +35 03 10.27 22.4G 11EZ90 F51 C~345U 2011 03 14.39504 10 52 26.864 +35 03 10.23 22.3G 11EZ90 F51 C~345U 2011 03 14.40699 10 52 26.790 +35 03 10.42 21.5G 11EZ90 F51 C~345U 2011 05 01.30831 10 48 55.502 +35 01 13.01 22.7G 11EZ90 F51 C~345U 2012 02 05.40614 11 03 35.535 +34 18 26.27 22.8G 11EZ90 F51 C~345U 2012 02 12.55366 11 02 58.236 +34 23 49.26 22.0G 11EZ90 F51 C~345U 2012 02 12.56555 11 02 58.185 +34 23 49.85 22.2G 11EZ90 F51 C~345U 2014 01 23.63296 11 19 24.375 +33 15 47.96 22.9G 11EZ90 F51 C~345U 2014 01 25.44891 11 19 17.575 +33 17 21.29 22.9G 11EZ90 F51 C~345U 2014 01 26.61533 11 19 13.003 +33 18 21.79 22.4G 11EZ90 F51 C~345U 2014 06 09.35839 11 10 47.919 +33 27 58.09 22.0G 11EZ90 F51 C~345U 2015 01 14.62731 11 27 12.472 +32 38 58.86 22.2G 11EZ90 F51 C~345U 2015 01 30.56957 11 26 18.886 +32 52 47.63 22.4G 11EZ90 F51 C~345U 2015 03 16.47341 11 22 21.489 +33 22 40.94 22.1G 11EZ90 F51 C~345U 2015 03 16.48398 11 22 21.420 +33 22 41.03 21.8G 11EZ90 F51 C~345U 2015 03 16.49457 11 22 21.371 +33 22 41.32 22.3G 11EZ90 F51 C~345U 2015 03 16.50518 11 22 21.294 +33 22 41.49 22.2G 11EZ90 F51 C~345U 2015 03 17.47888 11 22 15.683 +33 23 04.64 21.7G 11EZ90 F51 C~345U 2015 03 17.48934 11 22 15.627 +33 23 04.91 22.0G 11EZ90 F51 C~345U 2015 03 17.49988 11 22 15.560 +33 23 05.03 22.1G 11EZ90 F51 C~345U 2015 03 17.54130 11 22 15.320 +33 23 06.03 21.9G 11EZ90 F51 C~345U 2015 05 11.30555 11 18 16.842 +33 20 34.39 22.8G 11EZ90 F51 C~345U 2015 05 11.31778 11 18 16.817 +33 20 34.18 22.3G 11EZ90 F51 C~345U 2015 05 11.33000 11 18 16.791 +33 20 33.43 22.0G 11EZ90 F51 C~345U 2015 05 11.34229 11 18 16.755 +33 20 33.14 23.3G 11EZ90 F51 C~345U 2016 01 31.47598 11 33 32.713 +32 23 07.57 21.7G 11EZ90 F51 C~345U 2016 02 11.43341 11 32 44.660 +32 32 12.14 22.1G 11EZ90 F51 C~345U 2016 02 11.44479 11 32 44.608 +32 32 12.97 22.1G 11EZ90 F51 C~345U 2016 02 11.45622 11 32 44.571 +32 32 13.56 22.4G 11EZ90 F51 C~345V 2016 02 11.46760 11 32 44.496 +32 32 14.28 22.2G 11EZ90 F51 C~345V 2016 02 14.43608 11 32 30.035 +32 34 33.93 22.0G 11EZ90 F51 C~345V 2016 02 14.44782 11 32 29.980 +32 34 34.41 22.0G 11EZ90 F51 C~345V 2016 02 14.45956 11 32 29.919 +32 34 34.94 22.2G 11EZ90 F51 C~345V 2016 02 14.47136 11 32 29.856 +32 34 35.48 22.5G 11EZ90 F51 C~345V 2016 03 13.34068 11 29 56.363 +32 52 11.46 22.1G 11EZ90 F51 C~345V 2016 03 13.35170 11 29 56.302 +32 52 11.76 22.0G 11EZ90 F51 C~345V 2016 03 13.36266 11 29 56.240 +32 52 12.03 21.8G 11EZ90 F51 C~345V 2016 03 13.37360 11 29 56.174 +32 52 12.35 22.1G 11EZ90 F51 C~345V 2016 05 03.38920 11 25 51.672 +32 55 19.25 22.4G 11EZ90 F51 C~345V 2016 05 30.31373 11 25 07.154 +32 41 08.95 22.0G 11EZ90 F51 C~345V 2016 05 30.32596 11 25 07.142 +32 41 08.40 22.2G 11EZ90 F51 C~345V 2016 05 30.33820 11 25 07.151 +32 41 07.94 21.9G 11EZ90 F51 C~345V 2016 05 30.35043 11 25 07.151 +32 41 07.45 22.4G 11EZ90 F51 C~345V 2017 01 31.47480 11 40 41.238 +31 52 05.02 22.0G 11EZ90 F51 C~345V 2017 01 31.47544 11 40 41.224 +31 52 05.02 22.3G 11EZ90 F51 C~345V 2017 01 31.48605 11 40 41.183 +31 52 05.52 21.9G 11EZ90 F51 C~345V 2017 01 31.48669 11 40 41.182 +31 52 05.30 22.1G 11EZ90 F51 C~345V 2017 01 31.49723 11 40 41.143 +31 52 05.84 21.8G 11EZ90 F51 C~345V 2017 01 31.49787 11 40 41.153 +31 52 05.98 22.0G 11EZ90 F51 C~345V 2017 01 31.50846 11 40 41.085 +31 52 06.44 22.1G 11EZ90 F51 C~345V 2017 01 31.50911 11 40 41.102 +31 52 06.42 22.1G 11EZ90 F51 C~345V 2017 02 17.57679 11 39 24.522 +32 06 01.37 22.0G 11EZ90 F51 C~345V 2017 02 17.58842 11 39 24.447 +32 06 01.91 22.2G 11EZ90 F51 C~345V 2017 02 17.60003 11 39 24.407 +32 06 02.53 22.0G 11EZ90 F51 C~345V 2017 02 17.61167 11 39 24.348 +32 06 02.63 21.7G 11EZ90 F51 C~345V 2017 02 20.63210 11 39 08.856 +32 08 17.71 22.3G 11EZ90 F51 C~345V 2017 02 23.43527 11 38 54.104 +32 10 18.53 22.2G 11EZ90 F51 C~345V 2017 03 06.42727 11 37 53.448 +32 17 22.47 22.3G 11EZ90 F51 C~345V 2017 03 18.34418 11 36 45.368 +32 23 18.90 22.1G 11EZ90 F51 C~345V 2017 03 18.35511 11 36 45.307 +32 23 19.33 22.1G 11EZ90 F51 C~345V 2017 03 18.36609 11 36 45.242 +32 23 19.53 22.2G 11EZ90 F51 C~345V 2017 03 18.37715 11 36 45.182 +32 23 19.93 22.2G 11EZ90 F51 C~345V 2017 04 11.45424 11 34 35.119 +32 28 48.30 21.9G 11EZ90 F51 C~345V 2018 03 06.37616 11 45 05.711 +31 44 34.75 22.7G 11EZ90 F51 C~345V 2021 02 07.63331 12 08 06.225 +29 38 07.17 22.1w 11EZ90 F51 C~4Z3F 2021 02 07.64024 12 08 06.191 +29 38 07.42 22.1w 11EZ90 F51 C~4Z3F 2021 02 07.64722 12 08 06.179 +29 38 07.82 22.1w 11EZ90 F51 C~4Z3F 2021 02 07.65416 12 08 06.142 +29 38 08.03 22.1w 11EZ90 F51 C~4Z3F
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 -0.44 0.00 0.42
2 0.0000 0.00 -0.02 0.00 0.14
3 0.0001 0.00 0.26 0.00 -0.20
4 0.0001 0.00 0.21 0.00 -0.24
5 0.1313 0.00 -0.09 0.00 0.08
6 0.8981 0.00 0.38 0.00 -0.06
7 0.9177 0.00 -0.09 0.00 -0.05
8 0.9177 0.00 0.13 0.00 0.03
9 2.8645 0.00 -0.46 0.00 -0.22
10 2.8695 0.00 0.04 0.00 -0.53
11 2.8727 0.00 0.06 0.00 0.07
12 3.2389 0.00 -0.10 0.00 0.33
13 3.8392 0.00 0.02 0.00 -0.04
14 3.8828 0.00 -0.27 0.00 -0.18
15 4.0058 0.00 0.11 0.00 0.14
16 4.0058 0.00 0.00 0.00 -0.02
17 4.0058 0.00 0.20 0.00 0.02
18 4.0059 0.00 -0.02 0.00 -0.06
19 4.0085 0.00 -0.03 0.00 0.12
20 4.0085 0.00 0.05 0.00 0.15
21 4.0086 0.00 -0.03 0.00 0.03
22 4.0087 0.00 0.00 0.00 0.09
23 4.1586 0.00 -0.05 0.00 0.03
24 4.1587 0.00 -0.01 0.00 0.17
25 4.1587 0.00 0.01 0.00 -0.24
26 4.1587 0.00 -0.12 0.00 -0.18
27 4.8846 0.00 -0.03 0.00 0.17
28 4.9146 0.00 -0.15 0.00 -0.17
29 4.9147 0.00 -0.10 0.00 0.11
30 4.9147 0.00 0.18 0.00 0.15
31 4.9147 0.00 -0.11 0.00 0.32
32 4.9228 0.00 -0.03 0.00 0.07
33 4.9229 0.00 0.04 0.00 -0.00
34 4.9229 0.00 0.02 0.00 -0.02
35 4.9229 0.00 -0.03 0.00 -0.03
36 4.9992 0.00 -0.03 0.00 -0.01
37 4.9993 0.00 0.03 0.00 -0.02
38 4.9993 0.00 0.06 0.00 -0.06
39 4.9993 0.00 0.03 0.00 -0.04
40 5.1390 0.00 -0.03 0.00 0.03
41 5.2127 0.00 0.00 0.00 0.01
42 5.2128 0.00 -0.12 0.00 -0.03
43 5.2128 0.00 0.07 0.00 0.03
44 5.2128 0.00 0.12 0.00 0.05
45 5.8867 0.00 0.06 0.00 0.27
46 5.8867 0.00 -0.11 0.00 0.24
47 5.8867 0.00 -0.10 0.00 0.19
48 5.8867 0.00 -0.08 0.00 -0.07
49 5.8867 0.00 -0.04 0.00 -0.07
50 5.8867 0.00 0.15 0.00 0.03
51 5.8868 0.00 -0.25 0.00 -0.05
52 5.8868 0.00 0.05 0.00 -0.11
53 5.9335 0.00 0.07 0.00 0.01
54 5.9335 0.00 -0.16 0.00 0.02
55 5.9336 0.00 0.13 0.00 0.12
56 5.9336 0.00 0.15 0.00 -0.31
57 5.9419 0.00 0.01 0.00 -0.05
58 5.9495 0.00 -0.06 0.00 0.12
59 5.9796 0.00 0.11 0.00 -0.07
60 6.0123 0.00 -0.03 0.00 -0.09
61 6.0123 0.00 0.01 0.00 0.06
62 6.0123 0.00 -0.01 0.00 -0.02
63 6.0123 0.00 0.05 0.00 0.11
64 6.0783 0.00 -0.32 0.00 -0.43
65 6.9788 0.00 0.40 0.00 -0.12
66 9.9063 0.00 0.00 0.00 0.09
67 9.9063 0.00 -0.11 0.00 -0.01
68 9.9063 0.00 0.11 0.00 0.03
69 9.9063 0.00 -0.05 0.00 -0.11
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.
11EZ90 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 41.081 41.081 41.081 ecceobj 0.068 0.068 0.068 incobj 27.410 27.410 27.410 qmin 37.412 37.442 37.379 qmax 45.186 45.171 45.266 amean 41.203 41.157 41.187 amin 40.815 40.810 40.822 amax 41.575 41.576 41.587 emean 0.067 0.065 0.066 emin 0.050 0.048 0.049 emax 0.088 0.087 0.090 imean 25.869 25.863 25.868 imin 25.472 25.472 25.470 imax 26.291 26.303 26.311 excite_mean 0.441 0.441 0.441 fracstop 1.000 1.000 1.000 cjmean 2.831 2.831 2.831 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 179.2 179.3 179.2 kozaiamp 179.9 179.9 179.9