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: 11BS163 # Created Fri Apr 19 01:13:39 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 28 observations of 28 # Arc: 18.02y # First observation: 2005/03/10 # Last observation: 2023/03/18 # Chi-squared of fit: 40.45 DOF: 50 RMS: 0.21 # Min/Max residuals: -0.46 0.43 # Exact a, adot, b, bdot, g, gdot: 1.482840E-05 2.124043E-02 3.003910E-06 1.405263E-03 2.284504E-02 7.296985E-04 # Covariance matrix: 6.6813E-13 -1.2402E-13 2.7087E-14 -6.8067E-15 -8.6214E-14 -2.2740E-13 -1.2402E-13 3.0098E-14 -7.4454E-15 1.8303E-15 -1.2026E-14 6.0831E-14 2.7087E-14 -7.4454E-15 2.2896E-13 -2.0008E-14 5.1902E-15 -1.6213E-14 -6.8067E-15 1.8303E-15 -2.0008E-14 2.2793E-15 -8.9020E-16 3.9852E-15 -8.6214E-14 -1.2026E-14 5.1902E-15 -8.9020E-16 3.4730E-13 -2.6505E-14 -2.2740E-13 6.0831E-14 -1.6213E-14 3.9852E-15 -2.6505E-14 1.3245E-13 # lat0 lon0 xBary yBary zBary JD0 -2.588554 133.900227 -0.577482 -0.036169 -0.802128 2453439.733507 # Heliocentric elements and errors Epoch: 2453440.5000 = 2005/03/11 Mean Anomaly: 105.43778 +/- 0.105 Argument of Peri: 215.64402 +/- 0.093 Long of Asc Node: 168.32131 +/- 0.001 Inclination: 4.57681 +/- 0.000 Eccentricity: 0.04754696 +/- 0.0000 Semi-Major Axis: 43.93553122 +/- 0.0045 Time of Perihelion: 2422286.3425 +/- 31.4 Perihelion: 41.84653028 +/- 0.0045 Aphelion: 46.02453215 +/- 0.0049 Period (y) 291.2273 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -31.29921094 +/- 0.0008 Ecliptic Y 31.68600285 +/- 0.0008 Ecliptic Z -1.97680194 +/- 0.0001 Ecliptic XDOT -0.00189996 +/- 0.0000 Ecliptic YDOT -0.00170381 +/- 0.0000 Ecliptic ZDOT 0.00016436 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 44.58193052 +/- 0.0008 Geocenter to KBO 43.77320648 +/- 0.0011 # Hcoef: 6.15
The following table shows the complete astrometric record for 11BS163. 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 (11BS163) followed by the observatory code and reference code for the source of the astrometry.
2005 03 10.232764 09 02 23.58 +14 10 30.9 11BS163 645 C~2POP 2005 03 10.236081 09 02 23.56 +14 10 30.9 11BS163 645 C~2POP 2011 01 30.34920 09 34 18.649 +12 12 58.41 23.2w 11BS163 F51 C~1w3m 2011 01 30.36377 09 34 18.607 +12 12 59.02 23.0w 11BS163 F51 C~1w3m 2011 02 02.50377 09 34 04.665 +12 14 08.77 23.1w 11BS163 F51 C~1w3m 2011 02 02.53483 09 34 04.507 +12 14 09.52 22.8w 11BS163 F51 C~1w3m 2011 02 02.55006 09 34 04.459 +12 14 09.88 23.3w 11BS163 F51 C~1w3m 2011 02 03.38806 09 34 00.719 +12 14 29.01 23.1w 11BS163 F51 C~1w3m 2011 02 03.48592 09 34 00.275 +12 14 31.18 23.3w 11BS163 F51 C~1w3m 2011 02 03.50135 09 34 00.215 +12 14 31.52 23.3w 11BS163 F51 C~1w3m 2012 02 14.39299 09 37 59.270 +12 00 17.55 23.0w 11BS163 F51 C~1w3m 2013 02 08.50214 09 43 08.417 +11 39 39.63 22.6w 11BS163 F51 C~1w3m 2013 02 08.53585 09 43 08.271 +11 39 40.86 22.4w 11BS163 F51 C~1w3m 2013 03 04.30646 09 41 24.126 +11 49 02.46 22.3w 11BS163 F51 C~1w3m 2013 03 04.32069 09 41 24.088 +11 49 02.66 22.9w 11BS163 F51 C~1w3m 2013 03 04.33494 09 41 23.985 +11 49 02.94 22.6w 11BS163 F51 C~1w3m 2013 03 04.34917 09 41 23.954 +11 49 03.56 23.0w 11BS163 F51 C~1w3m 2014 01 25.39836 09 48 55.693 +11 15 17.20 22.5w 11BS163 F51 C~1w3m 2014 01 25.43290 09 48 55.538 +11 15 17.74 22.5w 11BS163 F51 C~1w3m 2014 02 28.30936 09 46 27.368 +11 28 34.30 22.3w 11BS163 F51 C~1w3m 2014 03 20.26385 09 45 08.801 +11 36 00.40 22.7w 11BS163 F51 C~1w3m 2014 03 24.28137 09 44 55.225 +11 37 20.71 22.6w 11BS163 F51 C~1w3m 2021 01 11.445750 10 22 20.617 +08 51 59.13 22.6G 11BS163 G37 C~4U6G 2021 01 11.486440 10 22 20.504 +08 51 59.84 11BS163 G37 C~4U6G 2021 01 11.526000 10 22 20.380 +08 52 00.35 11BS163 G37 C~4U6G 2023 03 18.162170 10 27 09.485 +08 36 39.66 22.4G 11BS163 G37 C~6V5t 2023 03 18.204400 10 27 09.328 +08 36 40.50 11BS163 G37 C~6V5t 2023 03 18.246910 10 27 09.165 +08 36 41.31 11BS163 G37 C~6V5t
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 -0.15 0.00 -0.39
2 0.0000 0.00 -0.27 0.00 -0.46
3 5.8922 0.00 -0.30 0.00 -0.06
4 5.8922 0.00 0.05 0.00 0.22
5 5.9008 0.00 0.19 0.00 -0.07
6 5.9009 0.00 -0.07 0.00 -0.02
7 5.9009 0.00 0.25 0.00 0.00
8 5.9032 0.00 0.16 0.00 0.23
9 5.9035 0.00 0.18 0.00 0.18
10 5.9035 0.00 0.34 0.00 0.18
11 6.9327 0.00 0.31 0.00 -0.31
12 7.9186 0.00 -0.09 0.00 -0.03
13 7.9187 0.00 0.01 0.00 0.41
14 7.9838 0.00 0.10 0.00 0.14
15 7.9838 0.00 0.43 0.00 0.01
16 7.9839 0.00 -0.21 0.00 -0.04
17 7.9839 0.00 0.22 0.00 0.25
18 8.8793 0.00 -0.16 0.00 0.12
19 8.8794 0.00 -0.30 0.00 -0.09
20 8.9721 0.00 -0.19 0.00 0.06
21 9.0268 0.00 -0.45 0.00 0.05
22 9.0378 0.00 0.01 0.00 0.19
23 15.8418 0.00 -0.15 0.00 0.05
24 15.8419 0.00 0.03 0.00 0.07
25 15.8420 0.00 -0.01 0.00 -0.09
26 18.0203 0.00 -0.14 0.00 0.00
27 18.0205 0.00 0.05 0.00 -0.20
28 18.0206 0.00 0.17 0.00 -0.43
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.
11BS163 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.774 43.774 43.774 ecceobj 0.054 0.054 0.054 incobj 4.596 4.596 4.596 qmin 40.303 40.282 40.282 qmax 47.531 47.508 47.508 amean 43.783 43.783 43.783 amin 43.441 43.435 43.435 amax 44.154 44.136 44.150 emean 0.060 0.060 0.060 emin 0.042 0.042 0.043 emax 0.077 0.077 0.077 imean 4.706 4.706 4.706 imin 4.010 4.010 4.010 imax 5.420 5.418 5.416 excite_mean 0.102 0.102 0.102 fracstop 1.000 1.000 1.000 cjmean 3.086 3.086 3.086 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 183.7 183.7 183.8 kozaiamp 180.0 180.0 180.0