Orbit Fit and Astrometric record for 03YX179

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: 03YX179   
# Created Sun Oct 22 01:37:28 2017
# Orbit generated from Bernstein formalism
# Fitting   18 observations of   18
# Arc:   9.22y
# First observation: 2003/12/24
#  Last observation: 2013/03/14
Preliminary a, adot, b, bdot, g, gdot:
  -0.000341   0.023591  -0.000022   0.002012   0.023395   0.000000
# Chi-squared of fit:    24.73 DOF:   30 RMS:  0.21
# Min/Max residuals:    -0.35    0.44
# Exact a, adot, b, bdot, g, gdot:
  1.629773E-05  2.344319E-02  1.793080E-06  1.989128E-03  2.407893E-02 -6.081036E-04
# Covariance matrix:
  2.4381E-13 -1.6144E-13  9.2196E-15 -1.4953E-14  8.5973E-14 -7.7908E-13
 -1.6144E-13  2.5624E-13 -1.4750E-14  2.3958E-14  4.0267E-14  1.2403E-12
  9.2196E-15 -1.4750E-14  1.2233E-13 -1.8834E-14 -5.0308E-16 -7.4649E-14
 -1.4953E-14  2.3958E-14 -1.8834E-14  1.0039E-14  8.7960E-16  1.2122E-13
  8.5973E-14  4.0267E-14 -5.0308E-16  8.7960E-16  3.1386E-13  3.1548E-14
 -7.7908E-13  1.2403E-12 -7.4649E-14  1.2122E-13  3.1548E-14  6.2830E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.015459  112.411850    0.342309   -0.000179   -0.918956  2452997.972683
# Heliocentric elements and errors
Epoch:              2452990.5000  =  2003/12/17
Mean Anomaly:          314.50704 +/-     0.121
Argument of Peri:       49.36875 +/-     0.137
Long of Asc Node:      112.13098 +/-     0.000
Inclination:             4.84279 +/-     0.000
Eccentricity:         0.04788522 +/-    0.0001
Semi-Major Axis:     43.87398591 +/-    0.0043
Time of Perihelion: 2466404.2673 +/-      35.7
Perihelion:          41.77307028 +/-    0.0051
Aphelion:            45.97490153 +/-    0.0055
Period (y)              290.6155 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -15.87175227 +/-    0.0004
Ecliptic Y           39.37588193 +/-    0.0009
Ecliptic Z           -0.01113988 +/-    0.0000
Ecliptic XDOT        -0.00244213 +/-    0.0000
Ecliptic YDOT        -0.00108646 +/-    0.0000
Ecliptic ZDOT         0.00022634 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.45436046 +/-    0.0008
Geocenter to KBO     41.53008270 +/-    0.0010
# Hcoef:  7.13

The following table shows the complete astrometric record for 03YX179. 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 (03YX179) followed by the observatory code and reference code for the source of the astrometry.

2003 12  24.47194  07 36 48.34   +21 33 38.0   23.7g 03YX179   568  Cq9908      
2003 12  24.49518  07 36 48.23   +21 33 38.4   23.4g 03YX179   568  Cq9908      
2003 12  24.51841  07 36 48.12   +21 33 38.7   23.7g 03YX179   568  Cq9908      
2003 12  25.51395  07 36 43.31   +21 33 50.9   23.9g 03YX179   568  Cq9908      
2004 04  15.14901  07 30 51.85   +21 49 01.4         03YX179   675  Cq9908      
2004 04  15.20497  07 30 51.89   +21 49 01.1         03YX179   675  Cq9908      
2004 04  16.18710  07 30 53.23   +21 48 59.3         03YX179   675  Cq9908      
2004 09  16.50612  07 43 58.20   +21 21 27.6         03YX179   675  Cq9908      
2004 09  17.50637  07 44 01.91   +21 21 19.6         03YX179   675  Cq9908      
2005 01  08.36227  07 41 17.52   +21 30 18.7         03YX179   568  Cq9908      
2005 01  08.40011  07 41 17.32   +21 30 19.1         03YX179   568  Cq9908      
2005 01  08.43797  07 41 17.12   +21 30 19.6         03YX179   568  Cq9908      
2006 01  28.29028  07 45 23.99   +21 27 33.0         03YX179   675  Cq9908      
2006 01  29.33692  07 45 18.72   +21 27 47.1         03YX179   675  Cq9908      
2006 01  29.34313  07 45 18.70   +21 27 47.1         03YX179   675  Cq9908      
2013 03  13.11709  08 22 39.17   +20 27 40.9   22.2R 03YX179   695  C~0ud7      
2013 03  13.19309  08 22 38.92   +20 27 41.8         03YX179   695  C~0ud7      
2013 03  14.12049  08 22 36.17   +20 27 50.8         03YX179   695  C~0ud7      

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    -0.19       0.00    -0.10
  2   0.0001     -1.58    -0.15       0.14     0.02
  3   0.0001     -3.14    -0.09       0.19     0.05
  4   0.0029    -71.33     0.04       1.29     0.04
  5   0.3085  -5053.30     0.31     124.97    -0.02
  6   0.3086  -5052.70    -0.06     124.76    -0.27
  7   0.3113  -5033.98     0.19     125.85    -0.24
  8   0.7311   6039.82     0.44     292.60     0.30
  9   0.7338   6092.30     0.39     293.77     0.29
 10   1.0428   3737.01    -0.35     429.31     0.23
 11   1.0429   3734.19    -0.34     429.23     0.11
 12   1.0430   3731.36    -0.35     429.25     0.08
 13   2.0967   7156.35     0.26     862.92    -0.02
 14   2.0996   7081.35    -0.11     863.80    -0.21
 15   2.0996   7081.08     0.07     863.75    -0.27
 16   9.2174  38986.72     0.11    3822.60     0.02
 17   9.2176  38982.96    -0.13    3822.65     0.10
 18   9.2201  38941.86     0.01    3822.30    -0.07

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.

03YX179    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.735    43.748    43.723
ecceobj         0.042     0.042     0.042
incobj          4.849     4.849     4.849
qmin           40.858    40.819    40.846
qmax           46.656    46.706    46.586
amean          43.644    43.657    43.631
amin           43.305    43.316    43.286
amax           44.000    44.011    43.979
emean           0.043     0.043     0.043
emin            0.026     0.025     0.026
emax            0.061     0.061     0.060
imean           3.354     3.348     3.359
imin            2.636     2.633     2.638
imax            4.061     4.061     4.067
excite_mean     0.073     0.073     0.073
fracstop        1.000     1.000     1.000
cjmean          3.091     3.091     3.091

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       179.5     180.0     179.7
kozaiamp        180.0     179.9     180.0