Orbit Fit and Astrometric record for 02GH32

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: 02GH32    
# Created Sun Oct 22 01:37:18 2017
# Orbit generated from Bernstein formalism
# Fitting   34 observations of   39
# Arc:   8.98y
# First observation: 2002/04/08
#  Last observation: 2011/03/31
Preliminary a, adot, b, bdot, g, gdot:
   0.000024   0.020361   0.000014   0.010178   0.023930   0.000000
# Chi-squared of fit:    56.87 DOF:   62 RMS:  0.23
# Min/Max residuals:    -0.63    0.48
# Exact a, adot, b, bdot, g, gdot:
  1.341457E-05  2.048256E-02  8.383081E-06  1.024970E-02  2.403530E-02  2.175959E-03
# Covariance matrix:
  3.4708E-13 -7.9782E-14  4.6520E-15 -1.7633E-14  3.4274E-13 -1.9300E-13
 -7.9782E-14  1.2336E-13 -2.1939E-14  5.7093E-14 -2.7469E-14  6.1256E-13
  4.6520E-15 -2.1939E-14  6.4167E-14 -1.9165E-14 -6.3418E-15 -1.1870E-13
 -1.7633E-14  5.7093E-14 -1.9165E-14  3.2448E-14  9.1192E-15  3.0494E-13
  3.4274E-13 -2.7469E-14 -6.3418E-15  9.1192E-15  4.4220E-13  9.2748E-14
 -1.9300E-13  6.1256E-13 -1.1870E-13  3.0494E-13  9.2748E-14  3.2690E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.910349 -144.637473    0.291040   -0.048829   -0.959377  2452372.765463
# Heliocentric elements and errors
Epoch:              2452370.5000  =  2002/04/06
Mean Anomaly:           93.29968 +/-     0.075
Argument of Peri:      249.85482 +/-     0.059
Long of Asc Node:      220.62734 +/-     0.000
Inclination:            26.73058 +/-     0.000
Eccentricity:         0.09294608 +/-    0.0001
Semi-Major Axis:     41.98041630 +/-    0.0050
Time of Perihelion: 2426622.3398 +/-      20.1
Perihelion:          38.07850137 +/-    0.0054
Aphelion:            45.88233122 +/-    0.0062
Period (y)              272.0059 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -34.83657154 +/-    0.0009
Ecliptic Y          -24.36158572 +/-    0.0006
Ecliptic Z           -2.11210570 +/-    0.0001
Ecliptic XDOT         0.00109173 +/-    0.0000
Ecliptic YDOT        -0.00208166 +/-    0.0000
Ecliptic ZDOT         0.00115367 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.56212595 +/-    0.0009
Geocenter to KBO     41.60546613 +/-    0.0012
# Hcoef:  5.37

The following table shows the complete astrometric record for 02GH32. 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 (02GH32) followed by the observatory code and reference code for the source of the astrometry.

2002 04  08.26472  14 08 14.34   -16 03 05.0   20.7R 02GH32    807  Cf5154      
2002 04  09.21801  14 08 10.10   -16 02 38.3         02GH32    807  Cf5154      
2002 04  09.28159  14 08 09.84   -16 02 36.7         02GH32    807  Cf5154      
2002 04  09.39501  14 08 09.28   -16 02 33.6         02GH32    807  Cf5154      
2002 06  06.33293  14 04 02.80   -15 34 22.7         02GH32    568  Cf8972      
2002 06  06.33587  14 04 02.78   -15 34 22.6         02GH32    568  Cf8972      
2002 06  06.34081  14 04 02.78   -15 34 22.4         02GH32    568  Cf8972      
2002 06  06.34624  14 04 02.75   -15 34 22.4         02GH32    568  Cf8972      
2002 06  06.34998  14 04 02.74   -15 34 22.2         02GH32    568  Cf8972      
2002 06  06.35299  14 04 02.74   -15 34 22.1         02GH32    568  Cf8972      
2002 06  06.35594  14 04 02.74   -15 34 22.0         02GH32    568  Cf8972      
2002 06  06.36088  14 04 02.71   -15 34 21.8         02GH32    568  Cf8972      
2002 06  06.36632  14 04 02.69   -15 34 21.7         02GH32    568  Cf8972      
2002 06  06.37006  14 04 02.68   -15 34 21.7         02GH32    568  Cf8972      
2002 06  07.35895  14 03 59.58   -15 33 56.4         02GH32    568  Cf8972      
2002 06  07.36191  14 03 59.57   -15 33 56.3         02GH32    568  Cf8972      
2002 06  07.36685  14 03 59.55   -15 33 56.0         02GH32    568  Cf8972      
2002 06  07.37229  14 03 59.53   -15 33 56.1         02GH32    568  Cf8972      
2002 06  07.37603  14 03 59.52   -15 33 55.8         02GH32    568  Cf8972      
2002 06  11.19237  14 03 48.18   -15 32 21.7   22.0R 02GH32    688  Cf7381      
2002 06  11.26906  14 03 47.94   -15 32 19.6         02GH32    688  Cf7381      
2003 05  30.03531  14 09 51.86   -15 28 30.0   21.2R 02GH32    807  Ci2129      
2003 05  30.12813  14 09 51.51   -15 28 27.3         02GH32    807  Ci2129      
2003 05  31.08532  14 09 48.00   -15 28 01.6         02GH32    807  Ci2129      
2004 04  22.38818  14 17 55.42   -15 36 30.5         02GH32    568  Ck9583      
2004 04  22.45251  14 17 55.10   -15 36 28.8         02GH32    568  Ck9583      
2004 05  20.18606  14 15 50.16   -15 23 00.0   22.4R 02GH32    688  Ck8098      
2004 05  20.26698  14 15 49.84   -15 22 57.7         02GH32    688  Ck8098      
2009 03  31.22063  14 45 59.60   -14 50 00.4   20.2R 02GH32    950  C~08wZ      
2009 03  31.22811  14 45 59.58   -14 50 01.0   22.0V 02GH32    950  C~08wZ      
2009 03  31.23522  14 45 59.59   -14 50 01.0   21.9V 02GH32    950  C~08wZ      
2009 03  31.24229  14 45 59.63   -14 50 01.6   21.8V 02GH32    950  C~08wZ      
2009 03  31.24980  14 45 59.60   -14 50 00.7   20.3R 02GH32    950  C~08wZ      
2011 03  31.17361  14 56 20.46   -14 24 38.1   22.5R 02GH32    304  C~0VlV      
2011 03  31.17787  14 56 20.45   -14 24 37.9         02GH32    304  C~0VlV      
2011 03  31.26213  14 56 20.14   -14 24 36.1         02GH32    304  C~0VlV      
2011 03  31.26639  14 56 20.12   -14 24 36.1         02GH32    304  C~0VlV      
2011 03  31.32838  14 56 19.92   -14 24 34.8         02GH32    304  C~0VlV      
2011 03  31.33265  14 56 19.89   -14 24 34.5         02GH32    304  C~0VlV      

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     0.01       0.00    -0.34
  2   0.0026    -66.55    -0.20       4.50    -0.13
  3   0.0028    -70.62     0.25       4.74    -0.15
  4   0.0031    -79.26    -0.37       4.93    -0.46
  5   0.1617  -4000.09    -0.05     385.83     0.06
  6   0.1617  -4000.39    -0.20     385.83     0.03
  7   0.1617  -4000.46    -0.01     386.02     0.18
  8   0.1618  -4000.87    -0.13     385.87    -0.01
  9   0.1618  -4001.07    -0.13     386.01     0.09
 10   0.1618  -4001.11    -0.01     386.10     0.16
 11   0.1618  -4001.14     0.12     386.19     0.23
 12   0.1618  -4001.62    -0.10     386.23     0.23
 13   0.1618  -4001.92    -0.12     386.23     0.19
 14   0.1618  -4002.06    -0.05     386.18     0.11
 15   0.1645  -4052.82    -0.00     394.62     0.24
 16   0.1645  -4052.99    -0.02     394.67     0.26
 17   0.1646  -4053.37    -0.14     394.85     0.41
 18   0.1646  -4053.61    -0.09     394.66     0.17
 19   0.1646  -4053.85    -0.13     394.89     0.37
 20   0.1750  -4240.11     0.48     427.20     0.22
 21   0.1752  -4244.09     0.18     427.99     0.36
 22   1.1411    627.12     0.11    2427.92    -0.63
 23   1.1413    621.45     0.05    2428.77    -0.44
 24   1.1439    565.02     0.04    2435.94    -0.49
 25   2.0400   7384.37     0.41    4291.22    -0.25
 26   2.0402   7379.44     0.24    4291.32    -0.49
 27   2.1161   5405.81    -0.14    4462.77    -0.22
 28   2.1164   5400.68     0.18    4463.41    -0.09
 29   6.9787  29934.30 (   5.14)  14649.18 (   0.62)
 30   6.9787  29934.20 (   5.49)  14648.51 (  -0.09)
 31   6.9787  29934.34 (   6.06)  14648.55 (  -0.09)
 32   6.9787  29935.08 (   7.24)  14648.15 (  -0.54)
 33   6.9787  29934.39 (   7.00)  14648.89 (   0.15)
 34   8.9772  38395.21    -0.10   18861.07     0.12
 35   8.9772  38395.01    -0.05   18861.22     0.24
 36   8.9774  38389.99    -0.11   18861.63     0.07
 37   8.9774  38389.70    -0.14   18861.54    -0.04
 38   8.9776  38386.43     0.25   18861.94    -0.08
 39   8.9776  38385.91    -0.02   18862.11     0.06

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.

02GH32    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        41.795    41.810    41.780
ecceobj         0.091     0.091     0.091
incobj         26.774    26.774    26.775
qmin           37.615    37.619    37.648
qmax           46.707    46.728    46.685
amean          42.051    42.066    42.036
amin           41.718    41.723    41.710
amax           42.397    42.428    42.392
emean           0.086     0.086     0.087
emin            0.072     0.071     0.072
emax            0.102     0.102     0.102
imean          27.573    27.574    27.572
imin           27.238    27.241    27.244
imax           27.920    27.937    27.936
excite_mean     0.471     0.471     0.471
fracstop        1.000     1.000     1.000
cjmean          2.804     2.804     2.803

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       184.0     184.6     183.7
kozaiamp        179.9     180.0     180.0