Orbit Fit and Astrometric record for 00YX1

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: 00YX1     
# Created Sat Nov 17 02:07:48 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   16 observations of   16
# Arc:   7.78y
# First observation: 2000/12/16
#  Last observation: 2008/09/27
# Chi-squared of fit:    16.60 DOF:   26 RMS:  0.18
# Min/Max residuals:    -0.42    0.41
# Exact a, adot, b, bdot, g, gdot:
  1.553897E-05  2.396945E-02  2.971594E-07  1.874247E-03  2.407234E-02  1.917517E-04
# Covariance matrix:
  2.7180E-13 -3.7328E-13  1.0348E-14 -2.1640E-14  2.0531E-13 -1.4090E-12
 -3.7328E-13  1.2548E-12 -3.3635E-14  7.1909E-14 -1.2085E-12  4.6910E-12
  1.0348E-14 -3.3635E-14  1.4819E-13 -2.4578E-14  2.8038E-14 -1.2967E-13
 -2.1640E-14  7.1909E-14 -2.4578E-14  1.3398E-14 -6.2478E-14  2.7558E-13
  2.0531E-13 -1.2085E-12  2.8038E-14 -6.2478E-14  1.8777E-12 -4.0897E-12
 -1.4090E-12  4.6910E-12 -1.2967E-13  2.7558E-13 -4.0897E-12  1.7968E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.787318   54.700127   -0.489918   -0.011811   -0.847337  2451894.654443
# Heliocentric elements and errors
Epoch:              2451894.5000  =  2000/12/16
Mean Anomaly:           12.50765 +/-     0.080
Argument of Peri:      335.46917 +/-     0.095
Long of Asc Node:       65.13447 +/-     0.000
Inclination:             4.53519 +/-     0.000
Eccentricity:         0.08069506 +/-    0.0003
Semi-Major Axis:     46.00684081 +/-    0.0160
Time of Perihelion: 2447934.4077 +/-      25.4
Perihelion:          42.29431621 +/-    0.0202
Aphelion:            49.71936541 +/-    0.0221
Period (y)              312.0627 +/-      0.16
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           24.09678328 +/-    0.0014
Ecliptic Y           34.88033797 +/-    0.0019
Ecliptic Z           -0.57079377 +/-    0.0000
Ecliptic XDOT        -0.00221865 +/-    0.0000
Ecliptic YDOT         0.00159967 +/-    0.0000
Ecliptic ZDOT         0.00021302 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.39832176 +/-    0.0018
Geocenter to KBO     41.54149133 +/-    0.0024
# Hcoef:  7.20

The following table shows the complete astrometric record for 00YX1. 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 (00YX1) followed by the observatory code and reference code for the source of the astrometry.

2000 12  16.15370  03 30 10.42   +18 10 48.1   22.9R 00YX1     695  Cc4111      
2000 12  16.19347  03 30 10.24   +18 10 47.2   22.4R 00YX1     695  Cc4111      
2000 12  16.23299  03 30 10.07   +18 10 47.1   22.8R 00YX1     695  Cc4111      
2000 12  18.13940  03 30 02.15   +18 10 21.9         00YX1     695  Cc4111      
2001 02  14.89733  03 28 18.36   +18 06 13.0         00YX1     950  Cc6738      
2001 02  16.86219  03 28 20.52   +18 06 25.1   23.1R 00YX1     950  Cc6738      
2001 11  09.46040  03 38 40.77   +18 46 03.4   23. R 00YX1     568  Ce0234      
2001 11  09.57675  03 38 40.17   +18 46 01.7   23. R 00YX1     568  Ce0234      
2001 11  09.61890  03 38 39.97   +18 46 00.6         00YX1     568  Ce0234      
2001 11  10.35396  03 38 36.39   +18 45 49.3         00YX1     568  Ce0234      
2002 11  07.45162  03 44 26.33   +19 11 38.4   22.5R 00YX1     568  Cl8327      
2002 11  07.49518  03 44 26.12   +19 11 37.7         00YX1     568  Cl8327      
2008 09  27.44615  04 20 33.60   +21 31 44.3   25.5R 00YX1     250  S~06AO      
2008 09  27.45240  04 20 33.59   +21 31 44.3         00YX1     250  S~06AO      
2008 09  27.45935  04 20 33.57   +21 31 44.2         00YX1     250  S~06AO      
2008 09  27.46560  04 20 33.56   +21 31 44.2         00YX1     250  S~06AO      

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     0.20
  2   0.0001      0.00    -0.15       0.00    -0.18
  3   0.0002      0.00    -0.15       0.00     0.24
  4   0.0054      0.00    -0.06       0.00    -0.04
  5   0.1663      0.00     0.09       0.00    -0.10
  6   0.1717      0.00     0.08       0.00    -0.12
  7   0.8989      0.00    -0.01       0.00     0.22
  8   0.8992      0.00    -0.26       0.00     0.36
  9   0.8993      0.00    -0.10       0.00    -0.07
 10   0.9013      0.00     0.41       0.00     0.12
 11   1.8927      0.00    -0.02       0.00    -0.37
 12   1.8928      0.00     0.08       0.00    -0.42
 13   7.7818      0.00     0.05       0.00     0.06
 14   7.7818      0.00     0.07       0.00     0.08
 15   7.7818      0.00    -0.03       0.00    -0.00
 16   7.7818      0.00     0.00       0.00     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.

00YX1    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        45.998    45.998    45.998
ecceobj         0.081     0.081     0.081
incobj          4.535     4.535     4.535
qmin           41.363    41.354    41.362
qmax           50.147    50.145    50.148
amean          45.635    45.635    45.635
amin           45.272    45.273    45.272
amax           46.022    46.022    46.022
emean           0.077     0.077     0.077
emin            0.064     0.064     0.064
emax            0.090     0.090     0.090
imean           3.159     3.159     3.159
imin            2.739     2.739     2.739
imax            3.592     3.592     3.592
excite_mean     0.095     0.095     0.095
fracstop        1.000     1.000     1.000
cjmean          3.111     3.111     3.111

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       170.6     170.8     170.5
kozaiamp        180.0     180.0     180.0