Orbit Fit and Astrometric record for 127546

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: 127546    
# Created Tue Oct 17 01:36:30 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   43 observations of   45
# Arc:   5.94y
# First observation: 2002/12/04
#  Last observation: 2008/11/10
# Chi-squared of fit:   329.36 DOF:   80 RMS:  0.49
# Min/Max residuals:    -0.80    1.49
# Exact a, adot, b, bdot, g, gdot:
  6.013181E-06  1.713971E-02  2.672574E-05  7.902871E-02  4.750578E-02 -1.544318E-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
    0.701832   91.322340    0.327291    0.011324   -0.925140  2452612.870803
# Heliocentric elements and errors
Epoch:              2452612.5000  =  2002/12/04
Mean Anomaly:          356.24763 +/-     0.000
Argument of Peri:       27.91411 +/-     0.000
Long of Asc Node:       90.32719 +/-     0.000
Inclination:            77.84584 +/-     0.000
Eccentricity:         0.68881879 +/-    0.0000
Semi-Major Axis:     67.45026641 +/-    0.0000
Time of Perihelion: 2454721.5042 +/-       0.0
Perihelion:          20.98925522 +/-    0.0000
Aphelion:           113.91127760 +/-    0.0000
Period (y)              553.9668 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           -0.18117553 +/-    0.0000
Ecliptic Y           21.98028492 +/-    0.0000
Ecliptic Z            0.25840327 +/-    0.0000
Ecliptic XDOT        -0.00097301 +/-    0.0000
Ecliptic YDOT        -0.00097202 +/-    0.0000
Ecliptic ZDOT         0.00454354 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   21.98266042 +/-    0.0000
Geocenter to KBO     21.05021745 +/-    0.0000
# Hcoef:  7.95

The following table shows the complete astrometric record for 127546. 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 (127546) followed by the observatory code and reference code for the source of the astrometry.

2002 12  04.37006  06 05 47.74   +24 08 04.1   20.8R 127546    695  Ch0145      
2002 12  04.47819  06 05 46.52   +24 08 09.3         127546    695  Ch0145      
2002 12  05.36248  06 05 36.71   +24 08 50.7         127546    695  Ch0145      
2003 01  03.19013  05 59 59.98   +24 30 46.3   21.0R 127546    688  Ch0145      
2003 01  03.30213  05 59 58.69   +24 30 51.1         127546    688  Ch0145      
2003 01  30.17579  05 55 17.82   +24 49 51.2   21.1R 127546    688  Ch1705      
2003 01  30.25700  05 55 17.08   +24 49 54.6         127546    688  Ch1705      
2003 03  01.78552  05 52 08.78   +25 09 56.9   21.2R 127546    230  Ch4226      
2003 03  01.81881  05 52 08.69   +25 09 58.0   20.9R 127546    230  Ch4226      
2003 03  06.15277  05 51 56.71   +25 12 44.5   21.1R 127546    662  Ch6164      
2003 03  06.20488  05 51 56.60   +25 12 46.6         127546    662  Ch6164      
2003 10  01.58522  06 17 32.78   +27 41 22.0   21.5R 127546    568  Ci6926      
2003 10  02.52623  06 17 32.52   +27 42 15.1         127546    568  Ci6926      
2003 10  02.56138  06 17 32.49   +27 42 16.7         127546    568  Ci6926      
2003 11  20.45451  06 13 07.77   +28 29 43.0   20.2R 127546    695  Cj3701      
2003 11  20.51402  06 13 07.20   +28 29 46.3         127546    695  Cj3701      
2004 12  14.24993  06 13 46.82   +33 34 34.3   21.5R 127546    918  Cq3767      
2004 12  14.32021  06 13 46.03   +33 34 38.8   21.1R 127546    918  Cq3767      
2005 02  04.20299  06 03 16.01   +34 09 23.6   20.6R 127546    709  Cm6367      
2005 02  04.23454  06 03 15.74   +34 09 24.8   20.8R 127546    709  Cm6760      
2005 02  04.26611  06 03 15.40   +34 09 25.2   21.1R 127546    709  Cm6367      
2005 02  04.29769  06 03 15.07   +34 09 25.1   21.3R 127546    709  Cm6367      
2005 02  04.78452  06 03 10.57   +34 09 37.5         127546    621  Cm6760      
2005 02  04.81962  06 03 10.29   +34 09 37.7   22. R 127546    621  Cm6760      
2005 02  05.80454  06 03 01.32   +34 10 01.6         127546    621  Cm6760      
2005 02  08.81069  06 02 35.21   +34 11 12.7         127546    621  Cm6760      
2005 02  08.84776  06 02 34.88   +34 11 13.5   21. R 127546    621  Cm6760      
2005 02  09.13905  06 02 32.52   +34 11 19.7   20.2R 127546    688  Cm6760      
2005 02  09.25223  06 02 31.53   +34 11 22.4         127546    688  Cm6760      
2005 02  14.17219  06 01 53.12   +34 13 08.5   21.0R 127546    709  Cm6760      
2005 02  14.20377  06 01 52.87   +34 13 09.6   20.7R 127546    709  Cm6760      
2006 01  28.17144  06 09 46.73   +38 53 41.2   21.2R 127546    688  Cq1751      
2006 01  28.23847  06 09 45.98   +38 53 42.5         127546    688  Cq1751      
2007 01  12.94521  06 19 25.150  +43 38 00.07  21.4V 127546    493  Cz7541      
2007 01  12.99720  06 19 24.383  +43 38 01.91  21.4V 127546    493  Cz7541      
2007 01  13.04167  06 19 23.728  +43 38 03.46  21.3V 127546    493  Cz7541      
2007 01  13.09344  06 19 22.857  +43 38 06.92  20.2V 127546    493  Cz7541      
2007 01  13.14465  06 19 22.226  +43 38 06.82  21.4V 127546    493  Cz7541      
2007 01  13.17468  06 19 21.781  +43 38 07.85  21.3V 127546    493  Cz7541      
2008 11  10.80999  06 52 32.20   +51 53 02.0   22.0R 127546    250  S~06HD      
2008 11  10.81694  06 52 32.13   +51 53 02.8         127546    250  S~06HD      
2008 11  10.82319  06 52 32.07   +51 53 03.6         127546    250  S~06HD      
2008 11  10.83013  06 52 32.00   +51 53 04.4         127546    250  S~06HD      
2011 01  08.48386  07 04 08.26   +62 43 16.2   21.0R 127546    695  C~0UMb      
2011 01  08.49041  07 04 08.11   +62 43 16.3         127546    695  C~0UMb      

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 (  -0.95)      0.00 (   2.17)
  2   0.0003      0.00    -0.03       0.00     0.05
  3   0.0027      0.00     0.15       0.00     0.03
  4   0.0816      0.00     0.15       0.00     0.15
  5   0.0819      0.00     0.55       0.00    -0.01
  6   0.1555      0.00     0.07       0.00    -0.15
  7   0.1557      0.00    -0.06       0.00    -0.05
  8   0.2393      0.00    -0.10       0.00    -0.20
  9   0.2394      0.00     0.21       0.00    -0.38
 10   0.2513      0.00    -0.32       0.00     0.43
 11   0.2514      0.00    -0.07       0.00     0.55
 12   0.8247      0.00    -0.04       0.00    -0.18
 13   0.8273      0.00     0.19       0.00    -0.07
 14   0.8274      0.00     0.02       0.00    -0.49
 15   0.9612      0.00    -0.00       0.00    -0.06
 16   0.9614      0.00     0.40       0.00    -0.13
 17   2.0284      0.00    -0.56       0.00     0.22
 18   2.0286      0.00     1.41       0.00     0.74
 19   2.1707      0.00     1.07       0.00     0.25
 20   2.1707      0.00     1.49       0.00     0.68
 21   2.1708      0.00     0.85       0.00     0.31
 22   2.1709      0.00     0.34       0.00    -0.54
 23   2.1723      0.00    -0.42       0.00    -0.08
 24   2.1723      0.00     0.27       0.00    -0.75
 25   2.1750      0.00    -0.45       0.00    -0.80
 26   2.1833      0.00    -0.43       0.00    -0.02
 27   2.1834      0.00    -0.64       0.00    -0.06
 28   2.1842      0.00     0.39       0.00    -0.57
 29   2.1845      0.00    -0.04       0.00    -0.40
 30   2.1980      0.00     0.55       0.00    -0.08
 31   2.1980      0.00     0.35       0.00     0.38
 32   3.1507      0.00    -0.07       0.00     0.03
 33   3.1509      0.00     0.32       0.00    -0.19
 34   4.1084      0.00    -0.74       0.00    -0.02
 35   4.1085      0.00    -0.75       0.00     0.02
 36   4.1086      0.00    -0.76       0.00     0.06
 37   4.1088      0.00 (  -2.42)      0.00 (   1.78)
 38   4.1089      0.00    -0.65       0.00    -0.03
 39   4.1090      0.00    -0.76       0.00     0.01
 40   5.9369      0.00     0.15       0.00     0.42
 41   5.9369      0.00     0.10       0.00     0.38
 42   5.9369      0.00     0.10       0.00     0.41
 43   5.9369      0.00     0.05       0.00     0.37
 44   8.0961      0.00     1.31       0.00    -0.33
 45   8.0962      0.00     1.30       0.00    -0.57

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.

127546    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        67.107    67.106    67.108
ecceobj         0.687     0.687     0.687
incobj         77.869    77.869    77.869
qmin           15.394    15.435    15.535
qmax          118.445   123.098   119.887
amean          65.960    66.970    65.869
amin           64.697    65.565    64.151
amax           67.859    69.435    67.894
emean           0.694     0.700     0.693
emin            0.664     0.671     0.669
emax            0.766     0.773     0.767
imean          76.186    76.018    76.242
imin           74.494    74.099    74.408
imax           77.233    77.055    77.139
excite_mean     1.194     1.197     1.193
fracstop        0.466     0.449     0.468
cjmean          0.966     0.964     0.965

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       241.2     240.9     242.1
kozaiamp        179.9     180.0     180.0