Orbit Fit and Astrometric record for 143751

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: 143751    
# Created Sun Oct 22 01:36:35 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   19 observations of   19
# Arc:   2.99y
# First observation: 2003/10/24
#  Last observation: 2006/10/20
# Chi-squared of fit:    57.66 DOF:   32 RMS:  0.31
# Min/Max residuals:    -1.32    0.55
# Exact a, adot, b, bdot, g, gdot:
  2.069120E-05  4.067215E-02  1.910983E-06  5.286769E-03  3.272522E-02 -5.098035E-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
   -1.925882   14.684361   -0.264217   -0.032234   -0.959651  2452936.708093
# Heliocentric elements and errors
Epoch:              2452936.5000  =  2003/10/24
Mean Anomaly:          359.06600 +/-     0.000
Argument of Peri:      347.46354 +/-     0.000
Long of Asc Node:       29.19845 +/-     0.000
Inclination:             7.66115 +/-     0.000
Eccentricity:         0.25093507 +/-    0.0000
Semi-Major Axis:     42.07058794 +/-    0.0000
Time of Perihelion: 2453195.0903 +/-       0.0
Perihelion:          31.51360206 +/-    0.0000
Aphelion:            52.62757382 +/-    0.0000
Period (y)              272.8827 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           30.40125158 +/-    0.0000
Ecliptic Y            8.24462705 +/-    0.0000
Ecliptic Z           -1.02686038 +/-    0.0000
Ecliptic XDOT        -0.00089414 +/-    0.0000
Ecliptic YDOT         0.00327848 +/-    0.0000
Ecliptic ZDOT         0.00044364 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   31.51610110 +/-    0.0000
Geocenter to KBO     30.55752131 +/-    0.0000
# Hcoef:  8.35

The following table shows the complete astrometric record for 143751. 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 (143751) followed by the observatory code and reference code for the source of the astrometry.

2003 10  24.20735  00 57 03.73   +04 00 38.7   22.7R 143751    695  Cj5825      
2003 10  24.30645  00 57 03.18   +04 00 35.8         143751    695  Cj5825      
2003 11  20.11762  00 54 52.50   +03 49 19.6   23.2R 143751    695  Cj5825      
2003 11  20.20247  00 54 52.16   +03 49 18.0         143751    695  Cj5825      
2004 10  17.17365  01 05 49.15   +05 14 25.5         143751    304  Cn7960      
2004 10  17.21834  01 05 48.90   +05 14 24.2         143751    304  Cn7960      
2004 10  17.26304  01 05 48.64   +05 14 22.5         143751    304  Cn7960      
2004 12  12.31346  01 01 48.31   +04 54 28.2   23.5R 143751    568  Cn7960      
2004 12  13.32341  01 01 46.55   +04 54 23.4   23.7R 143751    568  Cn7960      
2004 12  14.31742  01 01 44.91   +04 54 19.7   23.6R 143751    568  Cn7960      
2005 08  08.32277  01 19 13.44   +06 53 46.1   22.1R 143751    807  Co3932      
2005 08  09.34466  01 19 11.71   +06 53 36.2         143751    807  Co3932      
2005 08  10.34127  01 19 09.94   +06 53 26.3         143751    807  Co3932      
2005 09  28.302002 01 15 51.88   +06 34 45.8         143751    645  C~1SFt      
2005 09  28.302832 01 15 51.88   +06 34 45.7         143751    645  C~1SFt      
2005 09  28.305319 01 15 51.87   +06 34 45.7         143751    645  C~1SFt      
2006 10  19.28833  01 22 04.17   +07 33 10.3   22.6R 143751    695  Ct0453      
2006 10  20.19544  01 21 58.85   +07 32 41.5         143751    695  Ct0453      
2006 10  20.32382  01 21 58.07   +07 32 37.3         143751    695  Ct0453      

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    -1.32
  2   0.0003      0.00     0.03       0.00     0.19
  3   0.0737      0.00     0.11       0.00     0.11
  4   0.0739      0.00     0.13       0.00     0.08
  5   0.9828      0.00     0.04       0.00     0.14
  6   0.9829      0.00     0.26       0.00     0.27
  7   0.9830      0.00     0.33       0.00     0.01
  8   1.1365      0.00    -0.15       0.00    -0.10
  9   1.1393      0.00    -0.01       0.00    -0.27
 10   1.1420      0.00    -0.24       0.00    -0.15
 11   1.7909      0.00    -0.21       0.00    -0.02
 12   1.7937      0.00    -0.32       0.00    -0.24
 13   1.7964      0.00    -0.06       0.00    -0.07
 14   1.9304      0.00     0.41       0.00    -0.07
 15   1.9304      0.00     0.48       0.00    -0.14
 16   1.9305      0.00     0.55       0.00    -0.07
 17   2.9872      0.00    -0.23       0.00     0.25
 18   2.9897      0.00     0.13       0.00     0.25
 19   2.9901      0.00    -0.03       0.00     0.11

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.

143751    quality flag:3

Type:          5:3EE     5:3EE     5:3EE
Type:          5:3II     5:3II     5:3II

axisobj        42.627    42.627    42.627
ecceobj         0.261     0.261     0.261
incobj          7.635     7.635     7.635
qmin           31.130    31.130    31.130
qmax           54.145    54.145    54.146
amean          42.326    42.326    42.326
amin           41.841    41.840    41.842
amax           42.871    42.870    42.874
emean           0.249     0.249     0.249
emin            0.234     0.235     0.233
emax            0.264     0.264     0.264
imean           7.568     7.561     7.572
imin            7.072     7.072     7.072
imax            8.030     8.018     8.036
excite_mean     0.282     0.282     0.282
fracstop        1.000     1.000     1.000
cjmean          2.988     2.988     2.988

libcent 0       179.4     179.5     178.9
libamp  0        76.5      75.9      76.6
libcent 1       184.8     184.8     184.5
libamp  1       103.0     103.1     102.7
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       139.8     142.1     139.0
kozaiamp        180.0     180.0     180.0