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: 11BT163
# Created Sat Apr 20 01:13:41 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 36 observations of 36
# Arc: 16.04y
# First observation: 2005/02/04
# Last observation: 2021/02/17
# Chi-squared of fit: 36.07 DOF: 66 RMS: 0.18
# Min/Max residuals: -0.33 0.60
# Exact a, adot, b, bdot, g, gdot:
1.351805E-05 2.174125E-02 -8.666656E-06 -1.389611E-02 2.465761E-02 6.754110E-03
# Covariance matrix:
1.5683E-13 -3.0767E-14 -2.3761E-14 1.2445E-14 -6.2745E-14 -6.0281E-14
-3.0767E-14 1.1684E-14 1.1856E-14 -6.2711E-15 2.1771E-14 3.0436E-14
-2.3761E-14 1.1856E-14 1.2673E-13 -1.7234E-14 2.0300E-14 3.5647E-14
1.2445E-14 -6.2711E-15 -1.7234E-14 5.3414E-15 -9.1384E-15 -1.9000E-14
-6.2745E-14 2.1771E-14 2.0300E-14 -9.1384E-15 2.8490E-13 4.2835E-14
-6.0281E-14 3.0436E-14 3.5647E-14 -1.9000E-14 4.2835E-14 9.2356E-14
# lat0 lon0 xBary yBary zBary JD0
2.961587 139.103819 0.064552 0.050768 -0.979369 2453405.806525
# Heliocentric elements and errors
Epoch: 2453406.5000 = 2005/02/05
Mean Anomaly: 32.22862 +/- 0.007
Argument of Peri: 112.16682 +/- 0.009
Long of Asc Node: 323.54787 +/- 0.000
Inclination: 32.60261 +/- 0.000
Eccentricity: 0.33792023 +/- 0.0000
Semi-Major Axis: 54.21906096 +/- 0.0065
Time of Perihelion: 2440351.8394 +/- 3.6
Perihelion: 35.89734328 +/- 0.0051
Aphelion: 72.54077864 +/- 0.0091
Period (y) 399.2420 +/- 0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -31.31850738 +/- 0.0007
Ecliptic Y 27.20627782 +/- 0.0006
Ecliptic Z 2.09500937 +/- 0.0000
Ecliptic XDOT -0.00220706 +/- 0.0000
Ecliptic YDOT -0.00128944 +/- 0.0000
Ecliptic ZDOT -0.00150208 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.53799580 +/- 0.0006
Geocenter to KBO 40.55529594 +/- 0.0009
# Hcoef: 5.97
The following table shows the complete astrometric record for 11BT163. 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 (11BT163) followed by the observatory code and reference code for the source of the astrometry.
2005 02 04.305782 09 29 59.23 +17 54 25.9 22.2V 11BT163 645 C~2POP 2005 02 04.306612 09 29 59.24 +17 54 26.0 21.6V 11BT163 645 C~2POP 2005 02 04.309099 09 29 59.21 +17 54 26.2 23.0V 11BT163 645 C~2POP 2005 03 10.206278 09 27 09.26 +18 02 33.8 21.9V 11BT163 645 C~2POP 2005 03 10.207108 09 27 09.26 +18 02 33.6 21.8V 11BT163 645 C~2POP 2005 03 10.209595 09 27 09.26 +18 02 33.6 23.2V 11BT163 645 C~2POP 2005 11 10.500423 09 37 49.28 +16 34 30.2 22.6V 11BT163 645 C~2POP 2005 11 10.500838 09 37 49.27 +16 34 30.3 22.6V 11BT163 645 C~2POP 2005 11 10.501252 09 37 49.27 +16 34 30.2 21.9V 11BT163 645 C~2POP 2005 11 10.503740 09 37 49.27 +16 34 30.4 24.7V 11BT163 645 C~2POP 2005 11 10.504155 09 37 49.27 +16 34 30.4 24.1V 11BT163 645 C~2POP 2011 01 30.35119 09 52 12.605 +11 11 43.38 22.8w 11BT163 F51 C~1w3m 2011 01 30.38138 09 52 12.460 +11 11 43.97 22.7w 11BT163 F51 C~1w3m 2011 02 03.37461 09 51 53.581 +11 12 49.98 22.5w 11BT163 F51 C~1w3m 2011 02 03.39004 09 51 53.515 +11 12 50.44 22.6w 11BT163 F51 C~1w3m 2012 02 03.54090 09 55 14.930 +10 08 31.11 22.3i 11BT163 F51 C~1w3m 2012 02 14.35917 09 54 23.184 +10 11 39.34 22.6w 11BT163 F51 C~1w3m 2012 02 14.37339 09 54 23.169 +10 11 39.52 22.6w 11BT163 F51 C~1w3m 2012 02 14.38755 09 54 23.067 +10 11 39.95 22.6w 11BT163 F51 C~1w3m 2012 02 14.40173 09 54 22.997 +10 11 40.08 22.4w 11BT163 F51 C~1w3m 2013 02 21.45534 09 57 03.642 +09 10 28.41 21.3i 11BT163 F51 C~1w3m 2013 03 04.31276 09 56 12.969 +09 13 48.98 22.3w 11BT163 F51 C~1w3m 2013 03 04.32701 09 56 12.903 +09 13 49.22 22.1w 11BT163 F51 C~1w3m 2013 03 04.34125 09 56 12.854 +09 13 49.52 22.3w 11BT163 F51 C~1w3m 2014 02 23.38161 10 00 10.593 +08 08 09.16 22.4w 11BT163 F51 C~1w3m 2014 02 26.46046 09 59 56.188 +08 09 06.94 22.4w 11BT163 F51 C~1w3m 2014 02 26.47204 09 59 56.121 +08 09 07.14 22.5w 11BT163 F51 C~1w3m 2014 02 28.34988 09 59 47.408 +08 09 42.52 22.4w 11BT163 F51 C~1w3m 2014 03 06.36532 09 59 19.988 +08 11 35.54 21.7i 11BT163 F51 C~1w3m 2021 02 07.44272 10 22 29.832 +01 05 12.55 22.4w 11BT163 F51 C~4Z2v 2021 02 07.45472 10 22 29.793 +01 05 12.89 22.2w 11BT163 F51 C~4Z2v 2021 02 07.47874 10 22 29.685 +01 05 13.15 22.5w 11BT163 F51 C~4Z2v 2021 02 17.475263 10 21 45.873 +01 07 55.39 22.2w 11BT163 F51 C~4Z2v 2021 02 17.488086 10 21 45.822 +01 07 55.59 22.3w 11BT163 F51 C~4Z2v 2021 02 17.500823 10 21 45.759 +01 07 55.97 22.4w 11BT163 F51 C~4Z2v 2021 02 17.513536 10 21 45.696 +01 07 56.26 22.3w 11BT163 F51 C~4Z2v
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 0.07 0.00 -0.08
2 0.0000 0.00 0.29 0.00 0.01
3 0.0000 0.00 0.03 0.00 0.17
4 0.0928 0.00 -0.33 0.00 -0.03
5 0.0928 0.00 -0.27 0.00 -0.24
6 0.0928 0.00 -0.10 0.00 -0.26
7 0.7644 0.00 -0.03 0.00 -0.14
8 0.7644 0.00 -0.19 0.00 -0.04
9 0.7644 0.00 -0.19 0.00 -0.13
10 0.7644 0.00 -0.22 0.00 0.09
11 0.7644 0.00 -0.23 0.00 0.09
12 5.9851 0.00 0.25 0.00 0.07
13 5.9851 0.00 0.22 0.00 0.16
14 5.9961 0.00 0.28 0.00 -0.11
15 5.9961 0.00 0.41 0.00 0.09
16 6.9959 0.00 0.33 0.00 -0.00
17 7.0255 0.00 -0.22 0.00 0.00
18 7.0255 0.00 0.60 0.00 -0.07
19 7.0255 0.00 0.12 0.00 0.10
20 7.0256 0.00 0.11 0.00 -0.02
21 8.0470 0.00 -0.12 0.00 0.23
22 8.0767 0.00 -0.05 0.00 0.21
23 8.0767 0.00 -0.05 0.00 0.18
24 8.0768 0.00 0.20 0.00 0.22
25 9.0515 0.00 -0.10 0.00 0.13
26 9.0600 0.00 0.07 0.00 -0.02
27 9.0600 0.00 -0.11 0.00 -0.04
28 9.0651 0.00 -0.16 0.00 -0.07
29 9.0816 0.00 -0.17 0.00 -0.02
30 16.0086 0.00 -0.08 0.00 -0.22
31 16.0086 0.00 0.12 0.00 -0.06
32 16.0087 0.00 0.07 0.00 -0.15
33 16.0361 0.00 -0.17 0.00 -0.10
34 16.0361 0.00 -0.07 0.00 -0.13
35 16.0361 0.00 -0.15 0.00 0.03
36 16.0362 0.00 -0.23 0.00 0.09
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.
11BT163 quality flag:3 Type: 12:5EEEEEE12:5EEEEEE12:5EEEEEE axisobj 54.116 54.117 54.116 ecceobj 0.340 0.340 0.340 incobj 32.691 32.691 32.691 qmin 32.709 32.708 32.711 qmax 76.143 76.148 76.139 amean 53.972 53.971 53.972 amin 53.413 53.413 53.413 amax 54.703 54.702 54.704 emean 0.357 0.358 0.357 emin 0.315 0.315 0.315 emax 0.394 0.394 0.394 imean 33.166 33.163 33.170 imin 31.913 31.912 31.914 imax 34.438 34.433 34.444 excite_mean 0.654 0.654 0.654 fracstop 1.000 1.000 1.000 cjmean 2.649 2.649 2.649 libcent 0 170.1 169.5 171.4 libamp 0 107.9 108.2 106.9 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 213.6 213.6 213.6 kozaiamp 103.1 103.1 103.1