Orbit Fit and Astrometric record for 444018

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: 444018    
# Created Sun Oct 22 01:36:47 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   40 observations of   40
# Arc:  12.95y
# First observation: 2004/03/15
#  Last observation: 2017/02/24
# Chi-squared of fit:    19.49 DOF:   74 RMS:  0.12
# Min/Max residuals:    -0.29    0.36
# Exact a, adot, b, bdot, g, gdot:
  1.605303E-05  2.383387E-02 -3.484017E-07 -8.729426E-04  2.415792E-02  5.400616E-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
    1.953070 -156.405561    0.470135    0.029761   -0.871619  2453079.959363
# Heliocentric elements and errors
Epoch:              2453080.5000  =  2004/03/16
Mean Anomaly:           15.04504 +/-     0.000
Argument of Peri:      120.65624 +/-     0.000
Long of Asc Node:       65.63999 +/-     0.000
Inclination:             2.81969 +/-     0.000
Eccentricity:         0.04989842 +/-    0.0000
Semi-Major Axis:     44.40270169 +/-    0.0000
Time of Perihelion: 2448563.9867 +/-       0.0
Perihelion:          42.18707715 +/-    0.0000
Aphelion:            46.61832624 +/-    0.0000
Period (y)              295.8846 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -38.90259628 +/-    0.0000
Ecliptic Y          -16.47536081 +/-    0.0000
Ecliptic Z            1.41077329 +/-    0.0000
Ecliptic XDOT         0.00101852 +/-    0.0000
Ecliptic YDOT        -0.00250793 +/-    0.0000
Ecliptic ZDOT        -0.00009665 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.27101902 +/-    0.0000
Geocenter to KBO     41.39429712 +/-    0.0000
# Hcoef:  6.99

The following table shows the complete astrometric record for 444018. 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 (444018) followed by the observatory code and reference code for the source of the astrometry.

2004 03  15.45862  13 30 15.49   -07 20 44.0   22.7R 444018    695  Ck5138      
2004 03  16.35252  13 30 12.06   -07 20 22.7         444018    695  Ck5138      
2004 03  16.44820  13 30 11.70   -07 20 20.6         444018    695  Ck5138      
2004 04  22.36991  13 27 31.00   -07 04 33.0   22.7R 444018    568  Ck9590      
2004 04  22.43484  13 27 30.71   -07 04 31.4         444018    568  Ck9590      
2004 05  14.31845  13 25 59.58   -06 56 05.5   22.8R 444018    568  Ck9590      
2004 05  14.38008  13 25 59.35   -06 56 04.3         444018    568  Ck9590      
2004 05  26.01552  13 25 19.16   -06 52 32.8   23.2R 444018    304  Ck9040      
2004 05  26.04525  13 25 19.06   -06 52 32.3         444018    304  Ck9040      
2005 05  09.17277  13 31 24.18   -07 31 02.2   21.8R 444018    807  Cn5357      
2005 05  10.16739  13 31 20.16   -07 30 40.3         444018    807  Cn5357      
2005 05  10.25167  13 31 19.83   -07 30 38.3         444018    807  Cn5357      
2005 05  11.06058  13 31 16.59   -07 30 21.0         444018    807  Cn5357      
2013 03  07.52919  14 16 30.688  -12 07 17.68  23.2r 444018    568  C~1XPw      
2013 03  07.58437  14 16 30.536  -12 07 16.87  23.2r 444018    568  C~1XPw      
2013 03  07.63858  14 16 30.397  -12 07 15.94  23.4r 444018    568  C~1XPw      
2013 04  04.53075  14 14 51.272  -11 58 26.93  23.1r 444018    568  C~1XPw      
2013 04  07.39123  14 14 39.006  -11 57 23.19  23.1r 444018    568  C~1XPw      
2013 04  07.43502  14 14 38.804  -11 57 22.16  23.0r 444018    568  C~1XPw      
2013 04  08.42366  14 14 34.508  -11 56 59.84  23.1r 444018    568  C~1XPw      
2013 04  08.46889  14 14 34.298  -11 56 58.80  22.9r 444018    568  C~1XPw      
2013 04  09.37047  14 14 30.352  -11 56 38.38  23.1r 444018    568  C~1XPw      
2013 04  09.41358  14 14 30.155  -11 56 37.36  22.9r 444018    568  C~1XPw      
2013 04  09.45659  14 14 29.968  -11 56 36.37  23.3r 444018    568  C~1XPw      
2013 05  11.45828  14 12 04.289  -11 44 20.86  23.1r 444018    568  C~1XPw      
2013 05  12.45620  14 11 59.890  -11 43 59.27  23.2r 444018    568  C~1XPw      
2013 06  12.35550  14 10 04.368  -11 34 51.20        444018    568  C~1XPw      
2013 07  04.31530  14 09 19.105  -11 31 48.00  23.3r 444018    568  C~1XPw      
2013 07  06.32311  14 09 16.895  -11 31 41.75  23.2r 444018    568  C~1XPw      
2014 02  24.57398  14 22 02.609  -12 39 13.80  23.4r 444018    568  C~1XPw      
2014 02  25.54358  14 22 00.949  -12 39 04.16  23.1r 444018    568  C~1XPw      
2014 02  27.65454  14 21 57.044  -12 38 41.89  23.4r 444018    568  C~1XPw      
2014 03  28.44167  14 20 30.896  -12 31 01.72  23.3r 444018    568  C~1XPw      
2014 03  28.48073  14 20 30.737  -12 31 00.87  23.2r 444018    568  C~1XPw      
2014 04  05.41253  14 19 58.460  -12 28 15.14  23.3r 444018    568  C~1XPw      
2014 05  22.41728  14 16 27.890  -12 10 55.42  23.2r 444018    568  C~1XPw      
2014 05  28.38945  14 16 04.048  -12 09 02.87  23.1r 444018    568  C~1XPw      
2016 06  05.34506  14 25 53.309  -13 06 07.42  23.4w 444018    568  C~2KVA      
2017 02  23.64413  14 37 30.640  -14 05 37.22        444018    568  C~2KVA      
2017 02  24.65456  14 37 29.304  -14 05 29.86        444018    568  C~2KVA      

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    -0.06       0.00     0.32
  2   0.0024      0.00    -0.00       0.00     0.15
  3   0.0027      0.00     0.26       0.00    -0.02
  4   0.1038      0.00    -0.13       0.00    -0.16
  5   0.1040      0.00    -0.06       0.00    -0.21
  6   0.1639      0.00     0.11       0.00    -0.12
  7   0.1641      0.00     0.21       0.00    -0.17
  8   0.1959      0.00    -0.22       0.00    -0.17
  9   0.1960      0.00    -0.29       0.00    -0.14
 10   1.1491      0.00     0.19       0.00     0.08
 11   1.1518      0.00     0.14       0.00     0.20
 12   1.1521      0.00     0.35       0.00     0.36
 13   1.1543      0.00     0.07       0.00     0.17
 14   8.9776      0.00     0.03       0.00    -0.02
 15   8.9778      0.00     0.03       0.00    -0.03
 16   8.9779      0.00     0.19       0.00     0.09
 17   9.0543      0.00     0.02       0.00    -0.03
 18   9.0621      0.00     0.09       0.00    -0.10
 19   9.0622      0.00    -0.04       0.00    -0.05
 20   9.0649      0.00     0.12       0.00    -0.04
 21   9.0651      0.00    -0.01       0.00    -0.02
 22   9.0675      0.00     0.01       0.00    -0.06
 23   9.0676      0.00    -0.06       0.00    -0.02
 24   9.0678      0.00     0.03       0.00    -0.00
 25   9.1554      0.00    -0.01       0.00    -0.08
 26   9.1581      0.00    -0.02       0.00    -0.13
 27   9.2427      0.00     0.04       0.00     0.02
 28   9.3028      0.00    -0.05       0.00     0.06
 29   9.3083      0.00     0.02       0.00     0.02
 30   9.9469      0.00     0.04       0.00    -0.07
 31   9.9496      0.00    -0.01       0.00    -0.05
 32   9.9554      0.00    -0.09       0.00    -0.05
 33  10.0342      0.00     0.14       0.00     0.01
 34  10.0343      0.00     0.08       0.00     0.08
 35  10.0560      0.00     0.13       0.00    -0.02
 36  10.1847      0.00    -0.00       0.00    -0.04
 37  10.2010      0.00     0.19       0.00     0.03
 38  12.2242      0.00     0.15       0.00    -0.08
 39  12.9451      0.00     0.00       0.00     0.08
 40  12.9478      0.00    -0.02       0.00     0.03

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.

444018    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.896    43.896    43.896
ecceobj         0.039     0.039     0.039
incobj          2.826     2.826     2.826
qmin           41.493    41.499    41.481
qmax           47.161    47.157    47.156
amean          44.215    44.215    44.215
amin           43.865    43.866    43.868
amax           44.574    44.571    44.573
emean           0.043     0.043     0.043
emin            0.027     0.027     0.027
emax            0.058     0.058     0.058
imean           1.512     1.512     1.512
imin            0.806     0.806     0.806
imax            2.033     2.032     2.034
excite_mean     0.051     0.051     0.051
fracstop        1.000     1.000     1.000
cjmean          3.101     3.101     3.101

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       178.6     178.5     178.6
kozaiamp        179.9     179.9     180.0