Orbit Fit and Astrometric record for 148975

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: 148975    
# Created Sat Oct 21 01:36:36 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   59 observations of   59
# Arc:  10.44y
# First observation: 2001/12/09
#  Last observation: 2012/05/17
# Chi-squared of fit:   288.77 DOF:  112 RMS:  0.39
# Min/Max residuals:    -0.84    1.50
# Exact a, adot, b, bdot, g, gdot:
  2.564161E-05  1.009261E-01  5.139491E-06  2.222951E-02  6.550972E-02 -6.814552E-02
# 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
   -0.598845  105.804880    0.463118   -0.009096   -0.862569  2452253.083543
# Heliocentric elements and errors
Epoch:              2452252.5000  =  2001/12/09
Mean Anomaly:          341.44495 +/-     0.000
Argument of Peri:       88.82263 +/-     0.000
Long of Asc Node:      106.67155 +/-     0.000
Inclination:            12.66133 +/-     0.000
Eccentricity:         0.68701643 +/-    0.0000
Semi-Major Axis:     30.05061736 +/-    0.0000
Time of Perihelion: 2455353.7592 +/-       0.0
Perihelion:           9.40534948 +/-    0.0000
Aphelion:            50.69588524 +/-    0.0000
Period (y)              164.7359 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           -3.94533746 +/-    0.0000
Ecliptic Y           15.64864400 +/-    0.0000
Ecliptic Z           -0.15947133 +/-    0.0000
Ecliptic XDOT        -0.00329414 +/-    0.0000
Ecliptic YDOT        -0.00387970 +/-    0.0000
Ecliptic ZDOT         0.00095896 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   16.13937878 +/-    0.0000
Geocenter to KBO     15.26519082 +/-    0.0000
# Hcoef: 11.08

The following table shows the complete astrometric record for 148975. 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 (148975) followed by the observatory code and reference code for the source of the astrometry.

2001 12  09.58280  07 08 16.91   +21 54 31.4   23.5R 148975    568  Ce7056      
2001 12  09.61794  07 08 16.53   +21 54 32.3         148975    568  Ce7056      
2001 12  09.64248  07 08 16.27   +21 54 33.0         148975    568  Ce7056      
2001 12  19.41257  07 06 24.82   +21 59 27.9   22.8R 148975    568  Ce7056      
2001 12  19.44253  07 06 24.47   +21 59 28.8   23.2R 148975    568  Ce7056      
2002 01  08.42088  07 02 11.38   +22 10 08.6   22.8R 148975    568  Ce7056      
2002 01  08.43890  07 02 11.15   +22 10 09.2         148975    568  Ce7056      
2002 02  15.46119  06 55 02.88   +22 28 44.2   22.5R 148975    568  Cf2430      
2002 02  15.50044  06 55 02.53   +22 28 45.2         148975    568  Cf2430      
2002 10  31.55116  07 39 11.45   +22 04 54.6   23.1R 148975    568  Cg5849      
2002 11  01.56674  07 39 11.34   +22 05 11.5   23.1R 148975    568  Cg5849      
2003 03  07.18582  07 19 17.17   +23 18 11.1   22.0R 148975    662  Ch6100      
2003 03  07.23645  07 19 16.89   +23 18 12.6         148975    662  Ch6100      
2004 12  14.50953  08 44 17.96   +22 24 11.3   21.7R 148975    290  Cm4049      
2004 12  14.52153  08 44 17.87   +22 24 12.0   21.8R 148975    290  Cm4049      
2006 03  20.91428  09 08 40.59   +23 28 00.7         148975    621  Cq6960      
2006 03  22.83625  09 08 25.06   +23 28 54.6         148975    621  Cq6960      
2006 03  23.83969  09 08 17.33   +23 29 20.5   21. R 148975    621  Cq6960      
2006 12  15.41679  10 17 06.04   +19 24 06.3   21.1R 148975    250  S~06He      
2006 12  15.42119  10 17 06.04   +19 24 06.7         148975    250  S~06He      
2006 12  15.42559  10 17 06.05   +19 24 07.0         148975    250  S~06He      
2006 12  15.42999  10 17 06.05   +19 24 07.3         148975    250  S~06He      
2006 12  27.15529  10 16 46.40   +19 39 05.0   21.5R 148975    461  Ct1925      
2006 12  28.16961  10 16 42.39   +19 40 32.9   21. R 148975    461  Ct1925      
2007 12  20.20183  11 12 15.18   +16 09 19.6   22. R 148975    461  Cx4055      
2007 12  21.15823  11 12 19.68   +16 10 13.6   21.5R 148975    461  Cx4055      
2008 01  14.11494  11 12 21.29   +16 43 11.1   20.5R 148975    461  Cx4988      
2008 03  29.96142  10 56 54.13   +19 00 08.7         148975    461  Cz0868      
2008 03  30.92170  10 56 42.31   +19 01 01.2   21. R 148975    461  Cz0868      
2008 03  31.91541  10 56 30.30   +19 01 53.4   21. R 148975    461  Cz0868      
2008 12  24.14370  12 11 43.74   +11 29 21.7         148975    461  C~02Za      
2008 12  24.16439  12 11 43.82   +11 29 21.7   21. R 148975    461  C~02Za      
2009 02  28.02730  12 09 10.53   +13 15 31.5   20. R 148975    461  C~053e      
2009 02  28.03612  12 09 10.39   +13 15 32.7         148975    461  C~053e      
2009 04  01.84875  12 01 15.54   +14 16 00.2   20.5R 148975    461  C~066G      
2009 04  01.85759  12 01 15.42   +14 16 00.7         148975    461  C~066G      
2009 04  16.87195  11 57 54.09   +14 31 20.2   20.5R 148975    461  C~06cw      
2009 04  16.88441  11 57 53.95   +14 31 19.9         148975    461  C~06cw      
2011 03  26.38838  14 17 30.58   +00 38 23.5   20.8V 148975    G96  C~0UNb      
2011 03  26.39771  14 17 30.48   +00 38 24.4   21.4V 148975    G96  C~0UNb      
2011 03  26.40707  14 17 30.37   +00 38 25.0   21.0V 148975    G96  C~0UNb      
2011 03  26.41644  14 17 30.26   +00 38 26.4   20.4V 148975    G96  C~0UNb      
2011 04  14.34302  14 13 15.56   +01 07 51.6   21.0V 148975    G96  C~0V4W      
2011 04  14.34980  14 13 15.49   +01 07 53.1   20.4V 148975    G96  C~0V4W      
2011 04  14.35661  14 13 15.38   +01 07 53.4   20.9V 148975    G96  C~0V4W      
2011 04  14.36346  14 13 15.24   +01 07 53.7   21.9V 148975    G96  C~0V4W      
2011 04  26.25407  14 10 13.98   +01 22 55.9   20.7V 148975    G96  C~0VRr      
2011 04  26.26160  14 10 13.87   +01 22 56.3   20.9V 148975    G96  C~0VRr      
2011 04  26.26907  14 10 13.76   +01 22 57.0   20.8V 148975    G96  C~0VRr      
2011 04  26.27662  14 10 13.62   +01 22 57.3   20.7V 148975    G96  C~0VRr      
2012 03  31.41118  15 18 29.96   -05 48 21.1   21.1V 148975    691  C~0fZd      
2012 03  31.42893  15 18 29.78   -05 48 19.6   21.1V 148975    691  C~0fZd      
2012 03  31.44666  15 18 29.59   -05 48 18.2   20.9V 148975    691  C~0fZd      
2012 04  27.53333  15 12 49.144  -05 17 44.50  20.7i 148975    F51  C~0gWG      
2012 04  27.54395  15 12 48.972  -05 17 44.03  20.7i 148975    F51  C~0gWG      
2012 05  17.33919  15 07 43.53   -05 02 14.5   20.7V 148975    G96  C~0gpx      
2012 05  17.34435  15 07 43.46   -05 02 14.2   20.8V 148975    G96  C~0gpx      
2012 05  17.34961  15 07 43.39   -05 02 14.4   21.0V 148975    G96  C~0gpx      
2012 05  17.35487  15 07 43.28   -05 02 13.9   20.6V 148975    G96  C~0gpx      

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    -0.65       0.00     1.36
  2   0.0001      0.00    -0.09       0.00    -0.04
  3   0.0002      0.00     0.02       0.00    -0.03
  4   0.0269      0.00     0.03       0.00     0.13
  5   0.0270      0.00     0.28       0.00     0.08
  6   0.0817      0.00     0.32       0.00    -0.15
  7   0.0817      0.00     0.44       0.00    -0.13
  8   0.1858      0.00     0.74       0.00    -0.03
  9   0.1859      0.00     0.46       0.00     0.05
 10   0.8925      0.00    -0.43       0.00     0.16
 11   0.8952      0.00    -0.40       0.00     0.25
 12   1.2392      0.00    -0.16       0.00    -0.40
 13   1.2393      0.00    -0.28       0.00     0.07
 14   3.0142      0.00     0.35       0.00    -0.02
 15   3.0142      0.00     0.45       0.00    -0.08
 16   4.2774      0.00     0.07       0.00    -0.45
 17   4.2827      0.00    -0.04       0.00    -0.39
 18   4.2854      0.00    -0.80       0.00    -0.07
 19   5.0153      0.00     0.39       0.00    -0.84
 20   5.0153      0.00     0.36       0.00    -0.73
 21   5.0153      0.00     0.48       0.00    -0.72
 22   5.0153      0.00     0.45       0.00    -0.71
 23   5.0474      0.00     0.27       0.00     0.65
 24   5.0502      0.00     0.20       0.00     0.29
 25   6.0277      0.00     0.80       0.00     0.18
 26   6.0303      0.00    -0.61       0.00     0.66
 27   6.0959      0.00    -0.00       0.00    -0.08
 28   6.3036      0.00    -0.46       0.00     0.72
 29   6.3062      0.00    -0.33       0.00     0.24
 30   6.3089      0.00     0.13       0.00     0.08
 31   7.0406      0.00     1.50       0.00     0.70
 32   7.0406      0.00    -0.34       0.00     0.09
 33   7.2209      0.00     0.16       0.00    -0.32
 34   7.2210      0.00    -0.21       0.00    -0.26
 35   7.3108      0.00     0.22       0.00     0.07
 36   7.3108      0.00     0.38       0.00    -0.15
 37   7.3519      0.00    -0.25       0.00     0.39
 38   7.3520      0.00    -0.05       0.00    -0.42
 39   9.2917      0.00     0.04       0.00    -0.30
 40   9.2918      0.00     0.20       0.00    -0.32
 41   9.2918      0.00     0.22       0.00    -0.64
 42   9.2918      0.00     0.24       0.00    -0.16
 43   9.3436      0.00    -0.01       0.00    -0.65
 44   9.3436      0.00     0.49       0.00     0.28
 45   9.3437      0.00     0.40       0.00    -0.00
 46   9.3437      0.00    -0.13       0.00    -0.28
 47   9.3762      0.00    -0.00       0.00    -0.18
 48   9.3763      0.00     0.13       0.00    -0.28
 49   9.3763      0.00     0.24       0.00    -0.07
 50   9.3763      0.00    -0.07       0.00    -0.27
 51  10.3075      0.00     0.32       0.00    -0.12
 52  10.3076      0.00     0.17       0.00     0.12
 53  10.3076      0.00    -0.13       0.00     0.27
 54  10.3818      0.00     0.34       0.00     0.02
 55  10.3818      0.00     0.20       0.00    -0.14
 56  10.4360      0.00     0.04       0.00     0.17
 57  10.4360      0.00     0.20       0.00     0.31
 58  10.4360      0.00     0.38       0.00    -0.07
 59  10.4361      0.00    -0.03       0.00     0.26

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.

148975    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        29.807    29.806    29.807
ecceobj         0.685     0.685     0.685
incobj         12.675    12.675    12.675
qmin            9.045     9.258     8.979
qmax           71.648    51.227    65.329
amean          28.654    29.208    30.845
amin           24.376    28.387    25.467
amax           40.556    30.257    37.287
emean           0.672     0.680     0.697
emin            0.628     0.672     0.632
emax            0.767     0.693     0.754
imean          11.490    11.268    12.475
imin           10.857    10.984    10.910
imax           12.397    11.637    14.249
excite_mean     0.701     0.708     0.730
fracstop        0.003     0.001     0.006
cjmean          2.469     2.447     2.393

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       120.6      98.4     140.7
kozaiamp         30.3       8.7      40.5