Orbit Fit and Astrometric record for 00GY146

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: 00GY146   
# Created Tue Oct 17 01:37:06 2017
# Orbit generated from Bernstein formalism
# Fitting   15 observations of   17
# Arc:  14.97y
# First observation: 2000/04/03
#  Last observation: 2015/03/23
Preliminary a, adot, b, bdot, g, gdot:
  -0.000552   0.021852   0.000026  -0.001028   0.022919   0.000000
# Chi-squared of fit:    22.31 DOF:   24 RMS:  0.22
# Min/Max residuals:    -0.51    0.44
# Exact a, adot, b, bdot, g, gdot:
  1.588246E-05  2.115637E-02  6.770458E-07 -9.955009E-04  2.279893E-02  6.524020E-05
# Covariance matrix:
  1.5520E-13 -5.2016E-14 -1.1205E-15  1.9243E-15 -3.6289E-14 -1.2733E-13
 -5.2016E-14  7.3707E-14  1.8877E-15 -3.2591E-15  1.1855E-14  2.1584E-13
 -1.1205E-15  1.8877E-15  1.2989E-13 -1.0986E-14  6.3738E-16  5.8194E-15
  1.9243E-15 -3.2591E-15 -1.0986E-14  3.7469E-15 -8.5769E-16 -1.0041E-14
 -3.6289E-14  1.1855E-14  6.3738E-16 -8.5769E-16  6.9442E-13  5.4177E-14
 -1.2733E-13  2.1584E-13  5.8194E-15 -1.0041E-14  5.4177E-14  6.6490E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.189591 -170.548477   -0.080068    0.003112   -1.004109  2451637.870353
# Heliocentric elements and errors
Epoch:              2451630.5000  =  2000/03/27
Mean Anomaly:          164.46830 +/-     0.115
Argument of Peri:       10.80174 +/-     0.108
Long of Asc Node:       13.47744 +/-     0.000
Inclination:             2.70650 +/-     0.000
Eccentricity:         0.02608592 +/-    0.0001
Semi-Major Axis:     43.75687372 +/-    0.0061
Time of Perihelion: 2509053.0564 +/-      32.2
Perihelion:          42.61543548 +/-    0.0075
Aphelion:            44.89831195 +/-    0.0078
Period (y)              289.4527 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -44.23666950 +/-    0.0016
Ecliptic Y           -7.44373320 +/-    0.0003
Ecliptic Z            0.14518161 +/-    0.0000
Ecliptic XDOT         0.00040291 +/-    0.0000
Ecliptic YDOT        -0.00250076 +/-    0.0000
Ecliptic ZDOT        -0.00011940 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.85881374 +/-    0.0016
Geocenter to KBO     43.86171462 +/-    0.0016
# Hcoef:  7.83

The following table shows the complete astrometric record for 00GY146. 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 (00GY146) followed by the observatory code and reference code for the source of the astrometry.

2000 04  03.36961  12 35 02.09   -03 34 15.3   24.2R 00GY146   568  Cb2885      
2000 04  03.40451  12 35 01.96   -03 34 14.2   24.2R 00GY146   568  Cb2885      
2000 04  03.44462  12 35 01.79   -03 34 13.1   24.2R 00GY146   568  Cb2885      
2000 04  05.47872  12 34 53.15   -03 33 19.5   24.1R 00GY146   568  Cb2885      
2000 04  05.52608  12 34 52.97   -03 33 17.6   24.1R 00GY146   568  Cb2885      
2000 04  05.56623  12 34 52.79   -03 33 17.0   24.1R 00GY146   568  Cb2885      
2000 05  07.36698  12 32 51.42   -03 20 42.4   24.5R 00GY146   568  Cb5789      
2000 05  07.41047  12 32 51.30   -03 20 41.5   24.5R 00GY146   568  Cb5789      
2001 02  17.54593  12 42 17.41   -04 23 50.0   23.4R 00GY146   568  Cc6646      
2001 02  17.59356  12 42 17.26   -04 23 49.4   23.6R 00GY146   568  Cc6646      
2001 02  18.54103  12 42 14.47   -04 23 31.7         00GY146   568  Cc6646      
2001 03  24.37588  12 40 07.84   -04 10 23.3   23.3R 00GY146   695  Cc7846      
2001 03  24.45951  12 40 07.49   -04 10 21.1         00GY146   695  Cc7846      
2005 04  15.20682  12 56 10.57   -06 06 41.0   23.8R 00GY146   304  Cn3225      
2005 04  15.24563  12 56 10.41   -06 06 39.8         00GY146   304  Cn3225      
2015 03  23.36370  13 42 23.62   -11 18 48.8   23.8R 00GY146   695  C~1Q39      
2015 03  23.42692  13 42 23.37   -11 18 47.3         00GY146   695  C~1Q3A      

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    -0.25       0.00    -0.28
  2   0.0001     -2.22    -0.03       0.25     0.00
  3   0.0002     -4.99     0.00       0.26     0.05
  4   0.0058   -145.00    -0.17      -1.31    -0.31
  5   0.0059   -148.23    -0.10      -0.63     0.42
  6   0.0060   -150.94    -0.03      -1.13    -0.05
  7   0.0931  -2118.59     0.05     -22.34    -0.51
  8   0.0932  -2120.60     0.32     -22.22    -0.34
  9   0.8766   7161.61     0.06    -181.94     0.37
 10   0.8767   7159.31     0.07    -182.27     0.09
 11   0.8793   7113.93     0.13    -182.30     0.44
 12   0.9720   5060.51 (   0.28)   -198.25 (   0.95)
 13   0.9722   5054.83 (   0.40)   -198.28 (   0.99)
 14   5.0317  21096.48    -0.02   -1034.53     0.02
 15   5.0318  21093.78    -0.03   -1034.34     0.24
 16  14.9678  68511.85     0.04   -3174.81    -0.15
 17  14.9680  68507.44    -0.05   -3174.71     0.02

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.

00GY146    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.739    43.758    43.721
ecceobj         0.026     0.026     0.027
incobj          2.707     2.707     2.708
qmin           42.058    42.097    42.021
qmax           46.142    46.198    46.139
amean          44.027    44.046    44.007
amin           43.685    43.709    43.668
amax           44.370    44.397    44.357
emean           0.025     0.025     0.025
emin            0.009     0.009     0.009
emax            0.041     0.041     0.041
imean           2.841     2.845     2.832
imin            2.145     2.155     2.129
imax            3.394     3.392     3.391
excite_mean     0.056     0.056     0.056
fracstop        1.000     1.000     1.000
cjmean          3.098     3.098     3.098

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       178.8     178.8     178.7
kozaiamp        180.0     179.9     180.0