Orbit Fit and Astrometric record for 02GB32

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: 02GB32    
# Created Sun Oct 22 01:37:18 2017
# Orbit generated from Bernstein formalism
# Fitting   31 observations of   32
# Arc:  14.17y
# First observation: 2002/04/07
#  Last observation: 2016/06/08
Preliminary a, adot, b, bdot, g, gdot:
  -0.006030   0.043434  -0.002084   0.010853   0.039438   0.000000
# WARNING -- MRQMIN stopped after  27 iterations
# Chi-squared of fit:   258.70 DOF:   56 RMS:  0.51
# Min/Max residuals:    -1.68    0.92
# Exact a, adot, b, bdot, g, gdot:
  2.123305E-05  3.645408E-02  3.559933E-06  9.102014E-03  2.764613E-02 -8.268363E-03
# Covariance matrix:
  1.2045E-13 -2.9314E-14  6.9434E-15 -5.6746E-15  2.1459E-14 -3.7288E-14
 -2.9314E-14  2.3028E-14 -6.3152E-15  5.5102E-15  1.8726E-14  3.4817E-14
  6.9434E-15 -6.3152E-15  9.1267E-14 -9.0926E-15 -2.6218E-15 -1.0228E-14
 -5.6746E-15  5.5102E-15 -9.0926E-15  2.5420E-15  3.9476E-15  8.8183E-15
  2.1459E-14  1.8726E-14 -2.6218E-15  3.9476E-15  1.8968E-13  1.8746E-14
 -3.7288E-14  3.4817E-14 -1.0228E-14  8.8183E-15  1.8746E-14  5.6114E-14
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.553805 -173.357971   -0.186012    0.043891   -0.984914  2452371.564483
# Heliocentric elements and errors
Epoch:              2452370.5000  =  2002/04/06
Mean Anomaly:          358.57380 +/-     0.001
Argument of Peri:       36.77024 +/-     0.002
Long of Asc Node:      177.03353 +/-     0.000
Inclination:            14.18952 +/-     0.000
Eccentricity:         0.82980938 +/-    0.0001
Semi-Major Axis:    207.85516656 +/-    0.0993
Time of Perihelion: 2456706.7842 +/-       0.2
Perihelion:          35.37499888 +/-    0.0235
Aphelion:           380.33533424 +/-    0.1824
Period (y)             2996.7426 +/-      2.15
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -36.84990938 +/-    0.0006
Ecliptic Y           -4.47368949 +/-    0.0001
Ecliptic Z            1.61181532 +/-    0.0000
Ecliptic XDOT         0.00126162 +/-    0.0000
Ecliptic YDOT        -0.00348799 +/-    0.0000
Ecliptic ZDOT         0.00086423 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.15545273 +/-    0.0006
Geocenter to KBO     36.17142861 +/-    0.0006
# Hcoef:  7.68

The following table shows the complete astrometric record for 02GB32. 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 (02GB32) followed by the observatory code and reference code for the source of the astrometry.

2002 04  07.06374  12 28 25.94   -00 17 28.4   21.9R 02GB32    807  Cf5154      
2002 04  07.11828  12 28 25.67   -00 17 26.5         02GB32    807  Cf5154      
2002 04  08.01056  12 28 21.61   -00 16 56.4         02GB32    807  Cf5154      
2002 04  11.27296  12 28 06.98   -00 15 06.9   22.0R 02GB32    695  Cg5851      
2002 04  11.35333  12 28 06.64   -00 15 04.0         02GB32    695  Cg5851      
2002 04  11.35481  12 28 06.62   -00 15 04.3   22.9R 02GB32    568  Cf5154      
2002 04  11.43654  12 28 06.24   -00 15 01.6         02GB32    568  Cf5154      
2002 05  08.31705  12 26 21.20   -00 02 10.7   22.6R 02GB32    568  Cf7381      
2002 05  08.40233  12 26 20.91   -00 02 08.2         02GB32    568  Cf7381      
2003 04  01.35897  12 37 27.82   -00 41 53.8   22.9R 02GB32    695  Ck4262      
2003 04  01.42894  12 37 27.50   -00 41 51.8         02GB32    695  Ck4262      
2003 05  30.00250  12 33 56.85   -00 16 32.9   22.2R 02GB32    807  Ck4262      
2003 05  30.09406  12 33 56.69   -00 16 31.9         02GB32    807  Ck4262      
2003 07  08.29665  12 34 02.29   -00 17 04.3   24.4R 02GB32    568  Ck4262      
2004 03  16.32025  12 47 20.79   -01 12 17.1   23.2R 02GB32    695  Ck4262      
2004 03  16.41982  12 47 20.33   -01 12 13.6         02GB32    695  Ck4262      
2008 05  13.61073  13 18 57.35   -02 07 32.1   24.4R 02GB32    250  S~06AU      
2008 05  13.61698  13 18 57.33   -02 07 32.0         02GB32    250  S~06AU      
2008 05  13.62393  13 18 57.31   -02 07 31.8         02GB32    250  S~06AU      
2008 05  13.63018  13 18 57.28   -02 07 31.6         02GB32    250  S~06AU      
2008 06  08.03440  13 17 42.52   -02 00 46.2         02GB32    807  Cz1369      
2008 06  08.08037  13 17 42.43   -02 00 46.2         02GB32    807  Cz1369      
2008 06  09.03341  13 17 40.65   -02 00 37.6         02GB32    807  Cz1369      
2015 03  23.37284  14 28 23.92   -05 00 08.5   23.1R 02GB32    695  C~1Q3C      
2015 03  23.43591  14 28 23.69   -05 00 06.4         02GB32    695  C~1Q3C      
2015 03  23.49853  14 28 23.46   -05 00 04.4         02GB32    695  C~1Q3C      
2016 05  29.20184  14 32 42.697  -04 47 36.87  23.0R 02GB32    G37              
2016 05  29.25358  14 32 42.476  -04 47 36.11        02GB32    G37              
2016 05  29.32093  14 32 42.184  -04 47 34.85        02GB32    G37              
2016 06  08.19112  14 32 03.663  -04 45 18.54  23.2R 02GB32    G37              
2016 06  08.22641  14 32 03.543  -04 45 17.96        02GB32    G37              
2016 06  08.26503  14 32 03.395  -04 45 17.85        02GB32    G37              

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    -0.08       0.00     0.34
  2   0.0001     -4.47    -0.34       0.15     0.27
  3   0.0026    -72.31    -0.51       3.73    -0.10
  4   0.0115   -317.16     0.04      17.62     0.28
  5   0.0117   -323.00     0.29      18.27     0.64
  6   0.0117   -323.15     0.12      17.87     0.13
  7   0.0120   -329.46     0.01      18.10     0.07
  8   0.0856  -2081.51     0.23     103.71     0.49
  9   0.0858  -2086.50    -0.13     104.29     0.92
 10   0.9837   8050.11    -0.20    1865.08     0.05
 11   0.9839   8044.90     0.13    1865.02    -0.32
 12   1.1443   4538.78    -0.30    2012.28     0.28
 13   1.1445   4536.18    -0.23    2012.25     0.24
 14   1.2518   4626.20     0.35    2015.67    -0.58
 15   1.9418  16977.15    -0.04    3705.61     0.25
 16   1.9421  16969.37    -0.20    3706.10     0.14
 17   6.1014  45138.81     0.23   12016.93    -1.67
 18   6.1014  45138.48     0.31   12016.90    -1.68
 19   6.1015  45138.11     0.38   12016.97    -1.61
 20   6.1015  45137.59     0.27   12016.98    -1.59
 21   6.1710  43889.80    -0.02   11942.69     0.85
 22   6.1712  43888.50     0.18   11942.15     0.51
 23   6.1738  43859.25 (  -0.01)  11939.38 (   1.59)
 24  12.9591 117123.53     0.06   28836.21     0.22
 25  12.9593 117118.27     0.09   28836.82     0.27
 26  12.9594 117113.06     0.13   28837.33     0.21
 27  14.1441 121672.26    -0.10   31500.96     0.31
 28  14.1443 121667.68    -0.05   31500.17     0.21
 29  14.1444 121661.52    -0.20   31499.41     0.33
 30  14.1715 120863.62    -0.20   31367.12     0.09
 31  14.1716 120861.07    -0.10   31366.87     0.36
 32  14.1717 120858.20    -0.07   31365.92    -0.03

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.

02GB32    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj       200.130   200.403   199.859
ecceobj         0.823     0.824     0.823
incobj         14.221    14.221    14.221
qmin           33.137    33.141    33.091
qmax          404.892   430.336   414.007
amean         195.986   211.110   205.585
amin          175.829   196.375   193.338
amax          220.051   232.748   224.497
emean           0.821     0.833     0.829
emin            0.797     0.817     0.814
emax            0.840     0.849     0.844
imean          12.787    13.077    12.991
imin           12.170    12.578    12.366
imax           14.006    14.000    14.051
excite_mean     0.850     0.863     0.859
fracstop        1.000     1.000     1.000
cjmean          2.994     2.995     2.994

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        82.4      65.3      70.5
kozaiamp         50.2      31.1      38.6