Orbit Fit and Astrometric record for 468422

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: 468422    
# Created Mon Oct 23 01:36:49 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   32 observations of   32
# Arc:  15.30y
# First observation: 2000/03/27
#  Last observation: 2015/07/15
# Chi-squared of fit:    65.35 DOF:   58 RMS:  0.25
# Min/Max residuals:    -0.74    0.92
# Exact a, adot, b, bdot, g, gdot:
  1.339598E-05  2.320453E-02  6.157030E-08  2.702516E-04  2.388420E-02 -3.980174E-04
# 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
   -0.364715 -175.415088   -0.043914   -0.006592   -1.004027  2451630.815983
# Heliocentric elements and errors
Epoch:              2451630.5000  =  2000/03/27
Mean Anomaly:          325.20919 +/-     0.000
Argument of Peri:        8.51786 +/-     0.000
Long of Asc Node:      212.53786 +/-     0.000
Inclination:             0.76131 +/-     0.000
Eccentricity:         0.02427627 +/-    0.0000
Semi-Major Axis:     43.72900620 +/-    0.0000
Time of Perihelion: 2461837.8953 +/-       0.0
Perihelion:          42.66742920 +/-    0.0000
Aphelion:            44.79058319 +/-    0.0000
Period (y)              289.1762 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -42.72448623 +/-    0.0000
Ecliptic Y           -3.46795393 +/-    0.0000
Ecliptic Z           -0.26650604 +/-    0.0000
Ecliptic XDOT         0.00025180 +/-    0.0000
Ecliptic YDOT        -0.00264104 +/-    0.0000
Ecliptic ZDOT         0.00003139 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.86583988 +/-    0.0000
Geocenter to KBO     41.86871658 +/-    0.0000
# Hcoef:  7.49

The following table shows the complete astrometric record for 468422. 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 (468422) followed by the observatory code and reference code for the source of the astrometry.

2000 03  27.31524  12 16 15.17   -02 09 24.9         468422    568  Cb2555      
2000 03  27.35824  12 16 14.97   -02 09 23.4         468422    568  Cb2555      
2000 03  29.36495  12 16 06.15   -02 08 26.2   23.4R 468422    568  Cb2555      
2000 03  29.40952  12 16 05.94   -02 08 25.1   23.0R 468422    568  Cb2555      
2000 03  29.45079  12 16 05.77   -02 08 24.0   23.3R 468422    568  Cb2555      
2000 03  30.35311  12 16 01.83   -02 07 57.3   23.5R 468422    568  Cb2555      
2000 03  30.37477  12 16 01.73   -02 07 56.8   23.4R 468422    568  Cb2555      
2000 06  23.89804  12 12 38.17   -01 45 10.1         468422    950  Cb7658      
2000 06  24.90754  12 12 38.91   -01 45 15.0         468422    950  Cb6951      
2000 06  25.90006  12 12 39.73   -01 45 19.6         468422    950  Cb6951      
2000 06  26.90076  12 12 40.64   -01 45 25.1         468422    950  Cb6951      
2001 01  30.22288  12 24 32.83   -03 01 56.4   23.5R 468422    809  Cc6643      
2001 01  30.32304  12 24 32.60   -03 01 54.6   23.4R 468422    809  Cc6643      
2001 01  30.36207  12 24 32.52   -03 01 54.2   23.6R 468422    809  Cc6643      
2001 01  31.23874  12 24 30.68   -03 01 42.6   23.3R 468422    809  Cc6643      
2001 02  16.14256  12 23 47.62   -02 57 09.1         468422    950  Cc6643      
2001 02  16.18052  12 23 47.51   -02 57 08.2         468422    950  Cc6643      
2001 02  17.10530  12 23 44.49   -02 56 48.8   23.9R 468422    950  Cc6643      
2002 02  10.20351  12 28 59.44   -03 29 34.5   23.4R 468422    304  Ce8748      
2002 02  10.28575  12 28 59.22   -03 29 33.1         468422    304  Ce8748      
2013 03  12.37101  13 21 55.08   -08 47 10.8   23.6R 468422    695  C~0uco      
2013 03  12.44552  13 21 54.81   -08 47 09.5         468422    695  C~0uco      
2013 03  13.37191  13 21 51.30   -08 46 48.4         468422    695  C~0uco      
2015 02  20.47426  13 33 02.748  -09 50 21.73  23.9r 468422    568  C~1tf7      
2015 03  20.52388  13 31 32.550  -09 41 35.85  23.6r 468422    568  C~1tf7      
2015 04  14.46499  13 29 44.786  -09 31 03.52  23.8r 468422    568  C~1tf7      
2015 04  18.42564  13 29 26.988  -09 29 18.45  23.5r 468422    568  C~1tf7      
2015 04  18.47335  13 29 26.772  -09 29 17.21  23.5r 468422    568  C~1tf7      
2015 05  16.27210  13 27 30.261  -09 17 47.25  23.7r 468422    568  C~1tf7      
2015 06  21.325932 13 25 56.709  -09 08 24.67        468422    568  C~1tf7      
2015 07  12.276492 13 25 48.165  -09 07 27.31        468422    568  C~1tf7      
2015 07  15.266698 13 25 50.035  -09 07 37.36        468422    568  C~1tf7      

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     0.03       0.00    -0.16
  2   0.0001      0.00     0.31       0.00     0.11
  3   0.0056      0.00     0.13       0.00    -0.14
  4   0.0057      0.00    -0.04       0.00    -0.31
  5   0.0058      0.00     0.18       0.00    -0.39
  6   0.0083      0.00     0.23       0.00     0.52
  7   0.0084      0.00     0.18       0.00     0.40
  8   0.2425      0.00     0.24       0.00     0.92
  9   0.2453      0.00     0.06       0.00     0.19
 10   0.2480      0.00    -0.00       0.00     0.24
 11   0.2507      0.00    -0.06       0.00    -0.04
 12   0.8457      0.00     0.01       0.00    -0.34
 13   0.8460      0.00    -0.24       0.00     0.15
 14   0.8461      0.00    -0.18       0.00     0.04
 15   0.8485      0.00    -0.15       0.00    -0.04
 16   0.8921      0.00    -0.18       0.00    -0.18
 17   0.8922      0.00     0.05       0.00    -0.07
 18   0.8947      0.00    -0.17       0.00     0.08
 19   1.8751      0.00    -0.23       0.00    -0.71
 20   1.8753      0.00    -0.05       0.00    -0.74
 21  12.9584      0.00     0.18       0.00     0.17
 22  12.9586      0.00     0.40       0.00    -0.19
 23  12.9611      0.00    -0.01       0.00     0.09
 24  14.9026      0.00     0.11       0.00     0.03
 25  14.9794      0.00    -0.04       0.00    -0.11
 26  15.0476      0.00    -0.07       0.00    -0.20
 27  15.0585      0.00    -0.06       0.00    -0.00
 28  15.0586      0.00    -0.03       0.00    -0.02
 29  15.1347      0.00    -0.05       0.00    -0.10
 30  15.2334      0.00     0.02       0.00     0.32
 31  15.2908      0.00    -0.16       0.00     0.13
 32  15.2990      0.00     0.25       0.00    -0.08

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.

468422    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.709    43.709    43.709
ecceobj         0.024     0.024     0.024
incobj          0.761     0.761     0.761
qmin           42.064    42.060    42.071
qmax           46.111    46.125    46.091
amean          43.996    43.996    43.996
amin           43.655    43.655    43.657
amax           44.338    44.338    44.336
emean           0.025     0.025     0.025
emin            0.008     0.008     0.008
emax            0.040     0.040     0.040
imean           2.327     2.327     2.327
imin            1.671     1.671     1.671
imax            2.887     2.887     2.887
excite_mean     0.048     0.048     0.048
fracstop        1.000     1.000     1.000
cjmean          3.099     3.099     3.099

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       170.1     170.2     170.2
kozaiamp        179.9     179.9     179.9