Orbit Fit and Astrometric record for 523955

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: 523955    
# Created Sat Feb 22 04:26:04 2020
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   61 observations of   62
# Arc:  19.17y
# First observation: 1998/10/22
#  Last observation: 2017/12/22
# Chi-squared of fit:   258.88 DOF:  116 RMS:  0.36
# Min/Max residuals:    -1.57    1.82
# Exact a, adot, b, bdot, g, gdot:
  1.919113E-05  2.675976E-02 -2.322249E-06 -4.377932E-03  2.718724E-02 -3.291552E-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
    2.386895   37.612680    0.147336    0.040476   -0.976508  2451108.850761
# Heliocentric elements and errors
Epoch:              2451108.5000  =  1998/10/22
Mean Anomaly:          263.29283 +/-     0.000
Argument of Peri:      276.46514 +/-     0.000
Long of Asc Node:      231.33063 +/-     0.000
Inclination:             9.55867 +/-     0.000
Eccentricity:         0.12558189 +/-    0.0000
Semi-Major Axis:     36.67435284 +/-    0.0000
Time of Perihelion: 2472900.5609 +/-       0.0
Perihelion:          32.06871827 +/-    0.0000
Aphelion:            41.27998741 +/-    0.0000
Period (y)              222.1017 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           29.98381492 +/-    0.0000
Ecliptic Y           22.90870598 +/-    0.0000
Ecliptic Z            1.53178582 +/-    0.0000
Ecliptic XDOT        -0.00189276 +/-    0.0000
Ecliptic YDOT         0.00195287 +/-    0.0000
Ecliptic ZDOT        -0.00045433 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.76492707 +/-    0.0000
Geocenter to KBO     36.78206226 +/-    0.0000
# Hcoef:  7.19

The following table shows the complete astrometric record for 523955. 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 (523955) followed by the observatory code and reference code for the source of the astrometry.

1998 10  22.35003  02 17 47.55   +16 18 22.5         523955    695  Ca3601      
1998 10  22.48311  02 17 46.87   +16 18 18.5         523955    695  Ca3601      
1998 11  18.07069  02 15 27.92   +16 05 19.9   21.5R 523955    695  Ch1090      
1998 11  18.14591  02 15 27.54   +16 05 17.6         523955    695  Ch1090      
1998 11  18.23096  02 15 27.03   +16 05 15.2         523955    695  Ch1090      
1998 12  14.83617  02 13 35.14   +15 53 37.6   22.7R 523955    950  Ca3601      
1998 12  14.85345  02 13 35.07   +15 53 37.3         523955    950  Ca3601      
1999 11  10.16227  02 22 34.50   +16 25 15.5   22.5R 523955    695  Ca7321      
1999 11  10.18814  02 22 34.40   +16 25 14.7         523955    695  Ca7321      
1999 11  10.24322  02 22 34.07   +16 25 12.9         523955    695  Ca7321      
1999 11  10.31381  02 22 33.61   +16 25 10.7         523955    696  Ca7321      
1999 11  10.37010  02 22 33.30   +16 25 09.0   22.7R 523955    696  Ca7321      
1999 11  10.41551  02 22 33.04   +16 25 07.8         523955    696  Ca7321      
1999 11  11.24109  02 22 28.74   +16 24 43.8         523955    696  Ca7321      
1999 11  11.28637  02 22 28.51   +16 24 42.8         523955    696  Ca7321      
1999 11  11.33656  02 22 28.17   +16 24 41.3         523955    696  Ca7321      
2000 11  23.18416  02 27 52.14   +16 34 03.5   22.3R 523955    695  Cc2188      
2000 11  23.36171  02 27 51.25   +16 33 58.8         523955    695  Cc2188      
2003 09  28.41448  02 52 24.32   +17 39 25.9   22.4R 523955    688  Ci6006      
2003 09  28.47791  02 52 24.04   +17 39 25.9         523955    688  Ci6006      
2006 12  24.25190  03 05 25.31   +17 39 56.4   23.1R 523955    688  Ct1736      
2006 12  24.32942  03 05 24.84   +17 39 56.4         523955    688  Ct1736      
2008 10  24.48081  03 24 27.77   +18 22 25.9   23.5r 523955    695  C~0hkJ      
2008 12  21.26140  03 19 18.34   +18 00 34.0   21.3r 523955    695  C~0hkJ      
2008 12  21.33897  03 19 18.02   +18 00 32.5   20.6r 523955    695  C~0hkJ      
2008 12  22.31325  03 19 13.88   +18 00 14.4   21.8r 523955    695  C~0hkJ      
2010 11  08.48693  03 37 16.618  +18 32 28.27  22.9G 523955    F51  C~2r77      
2010 11  08.49966  03 37 16.537  +18 32 27.99  23.1G 523955    F51  C~2r77      
2010 11  08.51385  03 37 16.464  +18 32 27.65  22.5G 523955    F51  C~2r77      
2010 11  08.52652  03 37 16.386  +18 32 27.25  22.6G 523955    F51  C~2r77      
2011 11  30.30645  03 42 22.234  +18 31 06.26        523955    F51  C~2r77      
2011 12  01.50122  03 42 15.409  +18 30 40.70  23.3G 523955    F51  C~2r77      
2012 03  14.24180  03 39 39.802  +18 20 01.93  22.6G 523955    F51  C~2r77      
2012 11  07.38915  03 51 45.067  +18 44 35.67  22.7G 523955    F51  C~2r77      
2012 12  10.31158  03 48 35.162  +18 33 16.02  23.2G 523955    F51  C~2r77      
2012 12  10.32708  03 48 35.089  +18 33 16.00  22.7G 523955    F51  C~2r77      
2013 11  09.52980  03 58 52.466  +18 48 24.27  22.6G 523955    F51  C~2r77      
2015 01  11.37618  04 00 41.387  +18 34 18.81  22.4G 523955    F51  C~2r77      
2015 01  22.35107  04 00 08.541  +18 32 45.52  22.6G 523955    F51  C~2r77      
2015 01  24.33416  04 00 03.952  +18 32 33.07  22.9G 523955    F51  C~2r77      
2015 08  21.61236  04 16 41.771  +19 09 39.19  23.0G 523955    F51  C~2r77      
2015 09  19.55083  04 16 53.054  +19 06 59.84  23.1G 523955    F51  C~2r77      
2015 12  06.46539  04 11 02.558  +18 45 58.42  22.8G 523955    F51  C~2r77      
2015 12  07.46552  04 10 56.638  +18 45 40.90  21.7G 523955    F51  C~2r77      
2015 12  07.47677  04 10 56.561  +18 45 40.74  23.1G 523955    F51  C~2r77      
2015 12  07.48799  04 10 56.498  +18 45 40.57  22.5G 523955    F51  C~2r77      
2015 12  07.49920  04 10 56.423  +18 45 40.44  21.9G 523955    F51  C~2r77      
2015 12  09.45104  04 10 45.008  +18 45 06.23  22.3G 523955    F51  C~2r77      
2015 12  09.46381  04 10 44.932  +18 45 06.22  22.7G 523955    F51  C~2r77      
2015 12  09.47652  04 10 44.854  +18 45 05.89  21.7G 523955    F51  C~2r77      
2015 12  09.48918  04 10 44.782  +18 45 05.73  22.7G 523955    F51  C~2r77      
2016 01  07.25770  04 08 17.582  +18 38 06.47  23.1G 523955    F51  C~2r77      
2016 11  26.54480  04 19 24.996  +18 50 10.23  22.3G 523955    F51  C~2r77      
2017 10  30.56647  04 29 29.628  +18 58 08.01  22.7G 523955    F51  C~2r77      
2017 10  30.57850  04 29 29.577  +18 58 07.75  22.8G 523955    F51  C~2r77      
2017 10  30.57919  04 29 29.567  +18 58 07.69  22.6G 523955    F51  C~2r77      
2017 10  30.59114  04 29 29.486  +18 58 07.32  22.4G 523955    F51  C~2r77      
2017 10  30.59183  04 29 29.504  +18 58 07.52  23.0G 523955    F51  C~2r77      
2017 10  30.60376  04 29 29.460  +18 58 07.29  22.5G 523955    F51  C~2r77      
2017 10  30.60444  04 29 29.422  +18 58 07.15  22.5G 523955    F51  C~2r77      
2017 12  22.47010  04 24 24.325  +18 43 50.29  22.5G 523955    F51  C~2r77      
2018 01  10.41425  04 22 51.849  +18 40 14.23  23.0G 523955    F51  C~2r77      

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    -0.72       0.00    -0.29
  2   0.0004      0.00    -0.27       0.00    -0.49
  3   0.0732      0.00    -0.29       0.00     0.15
  4   0.0734      0.00    -0.34       0.00     0.01
  5   0.0736      0.00    -1.57       0.00     0.07
  6   0.1464      0.00     0.16       0.00    -0.23
  7   0.1465      0.00    -0.02       0.00    -0.14
  8   1.0508      0.00     1.24       0.00     0.45
  9   1.0509      0.00     1.82       0.00     0.40
 10   1.0510      0.00     1.29       0.00     0.20
 11   1.0512      0.00     0.06       0.00     0.06
 12   1.0514      0.00    -0.07       0.00     0.01
 13   1.0515      0.00    -0.34       0.00     0.15
 14   1.0538      0.00     0.07       0.00     0.22
 15   1.0539      0.00     0.25       0.00     0.54
 16   1.0540      0.00    -0.84       0.00     0.51
 17   2.0885      0.00     0.07       0.00    -0.13
 18   2.0890      0.00     0.04       0.00     0.09
 19   4.9338      0.00    -0.20       0.00    -1.29
 20   4.9340      0.00    -0.60       0.00    -0.11
 21   8.1722      0.00    -0.30       0.00     0.03
 22   8.1724      0.00 (  -2.88)      0.00 (   1.48)
 23  10.0072      0.00     0.41       0.00    -0.45
 24  10.1654      0.00    -0.31       0.00     0.12
 25  10.1656      0.00    -0.03       0.00     0.09
 26  10.1683      0.00    -0.03       0.00     0.08
 27  12.0469      0.00     0.14       0.00    -0.15
 28  12.0470      0.00     0.03       0.00    -0.14
 29  12.0470      0.00     0.16       0.00    -0.16
 30  12.0470      0.00     0.09       0.00    -0.28
 31  13.1060      0.00    -0.27       0.00     0.01
 32  13.1092      0.00     0.16       0.00    -0.18
 33  13.3933      0.00     0.07       0.00    -0.11
 34  14.0453      0.00    -0.02       0.00    -0.05
 35  14.1354      0.00    -0.07       0.00    -0.17
 36  14.1355      0.00     0.13       0.00     0.11
 37  15.0505      0.00     0.04       0.00     0.05
 38  16.2218      0.00    -0.15       0.00     0.03
 39  16.2519      0.00     0.00       0.00    -0.01
 40  16.2573      0.00    -0.21       0.00     0.06
 41  16.8303      0.00    -0.18       0.00     0.02
 42  16.9095      0.00     0.01       0.00     0.21
 43  17.1228      0.00     0.44       0.00    -0.15
 44  17.1256      0.00     0.05       0.00    -0.05
 45  17.1256      0.00    -0.09       0.00    -0.01
 46  17.1256      0.00    -0.03       0.00     0.02
 47  17.1257      0.00    -0.15       0.00     0.09
 48  17.1310      0.00     0.05       0.00    -0.11
 49  17.1310      0.00     0.05       0.00     0.10
 50  17.1311      0.00     0.01       0.00    -0.00
 51  17.1311      0.00     0.05       0.00     0.06
 52  17.2099      0.00     0.02       0.00     0.03
 53  18.0977      0.00    -0.12       0.00     0.20
 54  19.0232      0.00     0.03       0.00     0.19
 55  19.0232      0.00     0.18       0.00     0.13
 56  19.0232      0.00     0.08       0.00     0.08
 57  19.0232      0.00    -0.23       0.00    -0.09
 58  19.0232      0.00     0.09       0.00     0.12
 59  19.0233      0.00     0.34       0.00     0.09
 60  19.0233      0.00    -0.18       0.00    -0.04
 61  19.1680      0.00    -0.04       0.00     0.03
 62  19.2199      0.00    -0.09       0.00     0.07

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.

523955    quality flag:3

Type:           4:3E      4:3E      4:3E

axisobj        36.734    36.734    36.735
ecceobj         0.127     0.127     0.127
incobj          9.546     9.546     9.546
qmin           30.381    30.381    30.380
qmax           42.912    42.915    42.904
amean          36.477    36.477    36.477
amin           36.128    36.131    36.128
amax           36.851    36.857    36.849
emean           0.137     0.137     0.137
emin            0.108     0.108     0.108
emax            0.166     0.166     0.166
imean          11.066    11.066    11.062
imin            9.679     9.679     9.666
imax           12.816    12.816    12.815
excite_mean     0.236     0.236     0.236
fracstop        1.000     1.000     1.000
cjmean          2.965     2.965     2.965

libcent 0       179.1     179.8     178.8
libamp  0        64.5      63.8      65.4
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       178.9     178.9     179.0
kozaiamp        180.0     180.0     179.9