Orbit Fit and Astrometric record for 469306

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: 469306    
# Created Tue Oct 17 01:36:48 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   55 observations of   55
# Arc:  16.18y
# First observation: 1999/02/10
#  Last observation: 2015/04/15
# Chi-squared of fit:   107.58 DOF:  104 RMS:  0.25
# Min/Max residuals:    -0.53    0.82
# Exact a, adot, b, bdot, g, gdot:
  1.348745E-05  1.609227E-02  7.629983E-06  7.673798E-03  2.103287E-02 -1.808760E-03
# Covariance matrix:
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.023291  118.608005   -0.384618    0.000154   -0.915704  2451219.781253
# Heliocentric elements and errors
Epoch:              2451220.5000  =  1999/02/11
Mean Anomaly:          223.96366 +/-     0.000
Argument of Peri:      146.12889 +/-     0.000
Long of Asc Node:      119.00610 +/-     0.000
Inclination:            25.50658 +/-     0.000
Eccentricity:         0.14320942 +/-    0.0000
Semi-Major Axis:     43.59368195 +/-    0.0000
Time of Perihelion: 2490947.5376 +/-       0.0
Perihelion:          37.35065586 +/-    0.0000
Aphelion:            49.83670803 +/-    0.0000
Period (y)              287.8350 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -23.53344515 +/-    0.0000
Ecliptic Y           42.35970195 +/-    0.0000
Ecliptic Z            0.01968660 +/-    0.0000
Ecliptic XDOT        -0.00172775 +/-    0.0000
Ecliptic YDOT        -0.00120103 +/-    0.0000
Ecliptic ZDOT         0.00099880 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   48.45795458 +/-    0.0000
Geocenter to KBO     47.54473154 +/-    0.0000
# Hcoef:  5.04

The following table shows the complete astrometric record for 469306. 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 (469306) followed by the observatory code and reference code for the source of the astrometry.

1999 02  10.28051  08 02 56.28   +20 27 43.6   21.1R 469306    568  Cb6454      
1999 02  10.33373  08 02 56.05   +20 27 44.4   21.1R 469306    568  Cb6454      
1999 02  10.37846  08 02 55.86   +20 27 45.2   21.1R 469306    568  Cb6454      
1999 02  17.23406  08 02 28.08   +20 29 36.4   21.1R 469306    568  Cb6454      
1999 02  17.27993  08 02 27.88   +20 29 37.1   21.1R 469306    568  Cb6454      
1999 03  08.23784  08 01 23.78   +20 34 06.1   21.1R 469306    568  Cb6454      
1999 03  08.25227  08 01 23.74   +20 34 06.6   21.1R 469306    568  Cb6454      
1999 04  08.24061  08 00 34.49   +20 38 40.8   21.9R 469306    568  Cb6454      
1999 04  09.23382  08 00 34.24   +20 38 45.6   21.9R 469306    568  Cb6454      
2000 01  10.50965  08 09 30.85   +20 32 49.2   21.5R 469306    568  Cb6454      
2000 01  10.54212  08 09 30.69   +20 32 50.0   22.3R 469306    568  Cb6454      
2000 04  04.28332  08 04 47.16   +20 52 51.2   22.5R 469306    568  Cb6454      
2000 04  04.36278  08 04 47.09   +20 52 51.7   22.6R 469306    568  Cb6454      
2000 04  05.31420  08 04 46.52   +20 52 56.9   22.6R 469306    568  Cb6454      
2000 11  28.47689  08 16 20.58   +20 35 00.4   21.5R 469306    695  Cc3589      
2000 11  29.45039  08 16 18.30   +20 35 13.0   21.4R 469306    695  Cc3589      
2000 11  29.54823  08 16 18.05   +20 35 14.2   21.6R 469306    695  Cc3589      
2003 12  04.48741  08 29 05.77   +21 14 27.9   21.2R 469306    568  Ck0653      
2003 12  04.55734  08 29 05.59   +21 14 29.0         469306    568  Ck0653      
2004 03  18.228956 08 22 21.85   +21 45 04.4   21.4V 469306    645  C~1PqX      
2004 03  18.229785 08 22 21.85   +21 45 04.4   21.4V 469306    645  C~1PqX      
2004 03  18.232273 08 22 21.84   +21 45 04.4   22.0V 469306    645  C~1PqX      
2006 11  23.507953 08 42 37.16   +21 46 36.3   22.2V 469306    645  C~1PqX      
2006 11  23.508782 08 42 37.16   +21 46 36.3   21.8V 469306    645  C~1PqX      
2006 11  23.511270 08 42 37.15   +21 46 36.3   22.9V 469306    645  C~1PqX      
2007 02  15.18362  08 37 27.32   +22 14 25.6   21.9R 469306    688  Cu2274      
2007 02  15.28111  08 37 26.90   +22 14 27.6         469306    688  Cu2274      
2007 02  16.28816  08 37 22.57   +22 14 46.2         469306    695  Cu2274      
2007 02  16.37103  08 37 22.21   +22 14 47.8         469306    695  Cu2274      
2007 02  16.47518  08 37 21.75   +22 14 49.7         469306    695  Cu2274      
2007 02  21.340637 08 37 01.28   +22 16 16.4   22.1V 469306    645  C~1PqX      
2007 02  21.341466 08 37 01.27   +22 16 16.4   21.7V 469306    645  C~1PqX      
2007 02  21.343954 08 37 01.27   +22 16 16.5   22.8V 469306    645  C~1PqX      
2007 11  08.40968  08 47 11.95   +21 54 21.2         469306    695  Cy3962      
2007 11  09.40401  08 47 12.00   +21 54 30.7         469306    695  Cy3962      
2008 03  03.18597  08 40 48.05   +22 30 42.5         469306    695  Cy7583      
2008 03  03.23141  08 40 47.89   +22 30 43.1         469306    695  Cy7583      
2015 01  20.37704  09 16 11.108  +23 23 16.06  21.6w 469306    F51  C~1vV4      
2015 01  20.38909  09 16 11.052  +23 23 16.43  21.7w 469306    F51  C~1vV4      
2015 01  20.40114  09 16 11.004  +23 23 16.71  21.4w 469306    F51  C~1vV4      
2015 01  20.41337  09 16 10.943  +23 23 17.05  21.5w 469306    F51  C~1vV4      
2015 01  22.39733  09 16 02.137  +23 24 09.80  22.0w 469306    F51  C~1vV4      
2015 01  22.40949  09 16 02.082  +23 24 10.07  21.9w 469306    F51  C~1vV4      
2015 01  22.42165  09 16 02.021  +23 24 10.49  21.7w 469306    F51  C~1vV4      
2015 01  22.43384  09 16 01.970  +23 24 10.83  21.6w 469306    F51  C~1vV4      
2015 03  14.26149  09 12 20.195  +23 42 15.67  21.6w 469306    F51  C~1vV4      
2015 03  14.27507  09 12 20.145  +23 42 15.76  21.7w 469306    F51  C~1vV4      
2015 03  14.28931  09 12 20.090  +23 42 15.82  21.8w 469306    F51  C~1vV4      
2015 03  14.30225  09 12 20.048  +23 42 16.08  21.5w 469306    F51  C~1vV4      
2015 03  15.25538  09 12 16.702  +23 42 28.89  22.1w 469306    F51  C~1vV4      
2015 03  15.26817  09 12 16.657  +23 42 29.01  22.0w 469306    F51  C~1vV4      
2015 03  15.28095  09 12 16.605  +23 42 29.20  21.9w 469306    F51  C~1vV4      
2015 04  15.14066  09 11 02.62   +23 45 58.0   21.4R 469306    695  C~1RHL      
2015 04  15.21575  09 11 02.53   +23 45 58.0         469306    695  C~1RHL      
2015 04  15.29215  09 11 02.43   +23 45 58.0         469306    695  C~1RHL      

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    -0.05       0.00    -0.00
  2   0.0001      0.00    -0.38       0.00    -0.42
  3   0.0003      0.00    -0.37       0.00    -0.37
  4   0.0190      0.00    -0.07       0.00    -0.34
  5   0.0192      0.00    -0.34       0.00    -0.37
  6   0.0711      0.00     0.48       0.00     0.01
  7   0.0711      0.00     0.50       0.00     0.32
  8   0.1559      0.00     0.18       0.00     0.09
  9   0.1587      0.00     0.23       0.00    -0.04
 10   0.9151      0.00     0.30       0.00     0.17
 11   0.9152      0.00     0.13       0.00     0.38
 12   1.1472      0.00     0.15       0.00     0.76
 13   1.1474      0.00    -0.04       0.00     0.82
 14   1.1500      0.00     0.09       0.00     0.76
 15   1.7993      0.00    -0.01       0.00    -0.14
 16   1.8020      0.00     0.17       0.00    -0.09
 17   1.8022      0.00     0.04       0.00    -0.16
 18   4.8137      0.00    -0.05       0.00     0.14
 19   4.8139      0.00    -0.07       0.00     0.15
 20   5.1005      0.00    -0.18       0.00    -0.35
 21   5.1005      0.00    -0.15       0.00    -0.36
 22   5.1005      0.00    -0.21       0.00    -0.38
 23   7.7843      0.00     0.11       0.00    -0.17
 24   7.7843      0.00     0.13       0.00    -0.18
 25   7.7843      0.00     0.03       0.00    -0.21
 26   8.0134      0.00    -0.35       0.00     0.04
 27   8.0137      0.00    -0.20       0.00     0.21
 28   8.0164      0.00     0.16       0.00     0.10
 29   8.0167      0.00     0.19       0.00     0.18
 30   8.0170      0.00     0.07       0.00     0.19
 31   8.0303      0.00     0.44       0.00    -0.19
 32   8.0303      0.00     0.34       0.00    -0.21
 33   8.0303      0.00     0.49       0.00    -0.15
 34   8.7423      0.00    -0.03       0.00    -0.53
 35   8.7450      0.00    -0.03       0.00    -0.48
 36   9.0593      0.00    -0.18       0.00     0.12
 37   9.0594      0.00    -0.03       0.00     0.04
 38  15.9428      0.00    -0.09       0.00    -0.05
 39  15.9428      0.00    -0.12       0.00    -0.00
 40  15.9428      0.00    -0.03       0.00    -0.05
 41  15.9429      0.00    -0.13       0.00    -0.04
 42  15.9483      0.00    -0.01       0.00     0.04
 43  15.9483      0.00    -0.01       0.00    -0.02
 44  15.9484      0.00    -0.10       0.00     0.08
 45  15.9484      0.00    -0.03       0.00     0.09
 46  16.0876      0.00     0.18       0.00     0.01
 47  16.0876      0.00     0.16       0.00    -0.08
 48  16.0876      0.00     0.11       0.00    -0.22
 49  16.0877      0.00     0.18       0.00    -0.14
 50  16.0903      0.00     0.16       0.00    -0.00
 51  16.0903      0.00     0.16       0.00    -0.05
 52  16.0904      0.00     0.06       0.00    -0.03
 53  16.1748      0.00     0.02       0.00     0.30
 54  16.1750      0.00     0.07       0.00     0.29
 55  16.1753      0.00    -0.03       0.00     0.29

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.

469306    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        43.701    43.701    43.702
ecceobj         0.141     0.141     0.141
incobj         25.466    25.466    25.466
qmin           35.649    35.683    35.855
qmax           52.177    52.169    52.046
amean          43.722    43.722    43.712
amin           43.251    43.251    43.251
amax           44.209    44.196    44.240
emean           0.149     0.149     0.148
emin            0.126     0.128     0.122
emax            0.182     0.183     0.179
imean          23.833    23.833    23.824
imin           23.017    23.013    23.055
imax           24.399    24.376    24.294
excite_mean     0.431     0.431     0.430
fracstop        1.000     1.000     1.000
cjmean          2.869     2.869     2.869

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       188.4     185.1     183.3
kozaiamp        180.0     180.0     180.0