Orbit Fit and Astrometric record for 00GV146

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: 00GV146   
# Created Tue Dec 12 02:37:06 2017
# Orbit generated from Bernstein formalism
# Fitting   20 observations of   20
# Arc:  15.19y
# First observation: 2000/04/02
#  Last observation: 2015/06/12
Preliminary a, adot, b, bdot, g, gdot:
  -0.000337   0.024926   0.000002  -0.000417   0.024148   0.000000
# WARNING MRQMIN stopped after  13 iterations -- oscilliatory solution
# Chi-squared of fit:    81.91 DOF:   34 RMS:  0.36
# Min/Max residuals:    -0.79    0.86
# Exact a, adot, b, bdot, g, gdot:
  1.469252E-05  2.451567E-02  2.115160E-07 -4.137671E-04  2.456501E-02  1.170157E-03
# Covariance matrix:
  2.1777E-13 -2.0831E-13 -1.1822E-15  3.9752E-15  9.5891E-14 -5.6396E-13
 -2.0831E-13  3.9528E-13  2.0130E-15 -7.8897E-15 -2.2591E-13  1.1169E-12
 -1.1822E-15  2.0130E-15  1.1534E-13 -8.2474E-15  2.7059E-15  4.9643E-15
  3.9752E-15 -7.8897E-15 -8.2474E-15  1.7227E-15  5.3643E-15 -2.2542E-14
  9.5891E-14 -2.2591E-13  2.7059E-15  5.3643E-15  5.8874E-13 -7.2954E-13
 -5.6396E-13  1.1169E-12  4.9643E-15 -2.2542E-14 -7.2954E-13  3.1853E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    3.637753 -154.904756    0.207825    0.062295   -0.983382  2451637.025663
# Heliocentric elements and errors
Epoch:              2451630.5000  =  2000/03/27
Mean Anomaly:           39.97644 +/-     0.045
Argument of Peri:       59.85424 +/-     0.050
Long of Asc Node:       99.84138 +/-     0.001
Inclination:             3.67691 +/-     0.000
Eccentricity:         0.06485621 +/-    0.0001
Semi-Major Axis:     43.77780801 +/-    0.0076
Time of Perihelion: 2439882.0369 +/-      12.9
Perihelion:          40.93854514 +/-    0.0095
Aphelion:            46.61707089 +/-    0.0102
Period (y)              289.6605 +/-      0.08
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -37.76494474 +/-    0.0012
Ecliptic Y          -17.45739165 +/-    0.0005
Ecliptic Z            2.58290160 +/-    0.0001
Ecliptic XDOT         0.00103218 +/-    0.0000
Ecliptic YDOT        -0.00252416 +/-    0.0000
Ecliptic ZDOT        -0.00003763 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.68480485 +/-    0.0011
Geocenter to KBO     40.70830136 +/-    0.0013
# Hcoef:  7.53

The following table shows the complete astrometric record for 00GV146. 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 (00GV146) followed by the observatory code and reference code for the source of the astrometry.

2000 04  02.52492  13 38 21.46   -06 19 27.2   23.6R 00GV146   568  Cb2885      
2000 04  02.55478  13 38 21.33   -06 19 26.2   23.6R 00GV146   568  Cb2885      
2000 04  04.58648  13 38 12.27   -06 18 31.9   23.5R 00GV146   568  Cb2885      
2000 04  04.62940  13 38 12.07   -06 18 31.4   23.8R 00GV146   568  Cb2885      
2000 04  05.53707  13 38 08.00   -06 18 06.3   23.5R 00GV146   568  Cb2885      
2000 06  01.39105  13 34 15.13   -05 57 23.6   23.6R 00GV146   568  Cb6999      
2000 06  01.44368  13 34 14.96   -05 57 23.1   23.5R 00GV146   568  Cb6999      
2001 02  17.62306  13 46 02.58   -07 07 27.6   23.1R 00GV146   568  Cc6646      
2001 02  17.65828  13 46 02.54   -07 07 26.9   23.0R 00GV146   568  Cc6646      
2001 02  18.58770  13 46 00.76   -07 07 12.7   23.2R 00GV146   568  Cc6646      
2001 03  24.41098  13 44 14.51   -06 55 09.4   23.0R 00GV146   695  Cc7846      
2001 03  24.48693  13 44 14.18   -06 55 07.4         00GV146   695  Cc7846      
2002 03  14.32476  13 50 06.81   -07 30 37.9         00GV146   696  Cf4569      
2002 03  14.39050  13 50 06.60   -07 30 36.4         00GV146   696  Cf4569      
2015 05  22.19718  14 53 19.71   -13 21 40.5   23.9R 00GV146   695  C~1hTQ      
2015 05  22.23510  14 53 19.51   -13 21 39.5         00GV146   695  C~1hTQ      
2015 05  22.28701  14 53 19.37   -13 21 38.9         00GV146   695  C~1hTQ      
2015 06  12.18090  14 51 53.06   -13 16 09.3   23.1R 00GV146   695  C~1hTQ      
2015 06  12.22811  14 51 52.88   -13 16 08.5         00GV146   695  C~1hTQ      
2015 06  12.28150  14 51 52.68   -13 16 08.1         00GV146   695  C~1hTQ      

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     0.22       0.00    -0.10
  2   0.0001     -2.17     0.21       0.23     0.11
  3   0.0056   -147.74    -0.03       1.88    -0.08
  4   0.0058   -150.70     0.12       1.26    -0.72
  5   0.0082   -216.35    -0.31       2.66    -0.05
  6   0.1639  -3904.05    -0.13    -101.67    -0.18
  7   0.1640  -3906.60    -0.27    -102.13    -0.41
  8   0.8791   7448.92    -0.52    -209.36     0.41
  9   0.8792   7448.12    -0.18    -208.92     0.72
 10   0.8818   7418.25    -0.23    -205.17     0.45
 11   0.9744   5680.44     0.32     -98.31     0.40
 12   0.9746   5675.13     0.10     -98.21     0.38
 13   1.9461  11347.62     0.17    -207.90    -0.52
 14   1.9462  11344.16     0.54    -207.61    -0.38
 15  15.1339  74036.32    -0.27   -1352.90    -0.08
 16  15.1340  74032.84    -0.79   -1352.84     0.11
 17  15.1342  74030.43     0.86   -1352.90     0.23
 18  15.1914  72566.37     0.22   -1433.02    -0.11
 19  15.1915  72563.28     0.09   -1433.08     0.06
 20  15.1917  72560.02     0.17   -1433.63    -0.24

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.

00GV146    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.766    43.788    43.743
ecceobj         0.064     0.065     0.064
incobj          3.677     3.677     3.677
qmin           40.193    40.223    40.205
qmax           48.198    48.250    48.153
amean          44.092    44.115    44.069
amin           43.752    43.760    43.718
amax           44.464    44.485    44.436
emean           0.069     0.069     0.068
emin            0.053     0.053     0.052
emax            0.085     0.085     0.084
imean           2.045     2.043     2.047
imin            1.355     1.361     1.351
imax            2.687     2.678     2.689
excite_mean     0.078     0.078     0.077
fracstop        1.000     1.000     1.000
cjmean          3.095     3.096     3.095

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       185.1     185.4     184.9
kozaiamp        180.0     179.9     180.0