Orbit Fit and Astrometric record for 118698

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: 118698    
# Created Sat Oct 21 01:36:28 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   36 observations of   36
# Arc:   5.88y
# First observation: 2000/07/28
#  Last observation: 2006/06/13
# Chi-squared of fit:    65.62 DOF:   66 RMS:  0.24
# Min/Max residuals:    -0.57    0.47
# Exact a, adot, b, bdot, g, gdot:
  1.640783E-05  2.632674E-02  2.413800E-06  5.212764E-03  2.612579E-02 -5.967542E-03
# 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
    1.007516  -70.397359   -0.269569    0.017036   -0.978943  2451753.681573
# Heliocentric elements and errors
Epoch:              2451754.5000  =  2000/07/29
Mean Anomaly:          307.16691 +/-     0.000
Argument of Peri:       82.96942 +/-     0.000
Long of Asc Node:      285.05512 +/-     0.000
Inclination:            11.23720 +/-     0.000
Eccentricity:         0.23415746 +/-    0.0000
Semi-Major Axis:     43.56647945 +/-    0.0000
Time of Perihelion: 2467169.0434 +/-       0.0
Perihelion:          33.36506349 +/-    0.0000
Aphelion:            53.76789541 +/-    0.0000
Period (y)              287.5656 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           13.42838294 +/-    0.0000
Ecliptic Y          -36.87988324 +/-    0.0000
Ecliptic Z            0.67312693 +/-    0.0000
Ecliptic XDOT         0.00237890 +/-    0.0000
Ecliptic YDOT         0.00152929 +/-    0.0000
Ecliptic ZDOT         0.00053534 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.25443890 +/-    0.0000
Geocenter to KBO     38.27653574 +/-    0.0000
# Hcoef:  8.21

The following table shows the complete astrometric record for 118698. 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 (118698) followed by the observatory code and reference code for the source of the astrometry.

2000 07  28.18083  19 24 14.21   -21 00 36.3   23.9R 118698    309  Cb7916      
2000 07  28.22055  19 24 14.00   -21 00 36.5         118698    309  Cb7916      
2000 07  28.25960  19 24 13.80   -21 00 36.8   23.8R 118698    309  Cb7916      
2000 07  29.07469  19 24 09.61   -21 00 43.1   23.8R 118698    309  Cb7916      
2000 07  29.18657  19 24 09.03   -21 00 44.1   23.6R 118698    309  Cb7916      
2000 07  29.22275  19 24 08.84   -21 00 44.4   23.7R 118698    309  Cb7916      
2000 08  03.05532  19 23 44.41   -21 01 21.7   24.0R 118698    809  Cb7916      
2000 08  03.09550  19 23 44.22   -21 01 22.4         118698    809  Cb7916      
2000 08  03.11642  19 23 44.12   -21 01 22.4         118698    809  Cb7916      
2000 08  07.02778  19 23 25.05   -21 01 51.4   23.6R 118698    809  Cb9203      
2000 08  07.03376  19 23 25.03   -21 01 51.7   23.8R 118698    809  Cb9203      
2000 08  07.05300  19 23 24.95   -21 01 51.8   24.2R 118698    809  Cb9203      
2000 08  08.03261  19 23 20.28   -21 01 59.2   24.0R 118698    809  Cb9203      
2000 08  08.04453  19 23 20.23   -21 01 59.2   24.2R 118698    809  Cb9203      
2000 08  08.05646  19 23 20.17   -21 01 59.3   23.8R 118698    809  Cb9203      
2000 09  23.22810  19 21 00.19   -21 05 16.4   23.7R 118698    568  Cb9203      
2000 09  23.33348  19 21 00.06   -21 05 16.4         118698    568  Cb9203      
2000 09  24.22247  19 20 59.33   -21 05 16.7   23.9R 118698    568  Cb9203      
2001 05  29.37243  19 35 22.99   -20 21 51.0   23.4R 118698    695  Cd3308      
2001 05  29.42104  19 35 22.81   -20 21 51.2         118698    695  Cd3308      
2001 07  24.29957  19 30 48.93   -20 28 44.2         118698    568  Cd3308      
2001 07  24.33033  19 30 48.76   -20 28 44.4         118698    568  Cd3308      
2001 07  25.30196  19 30 43.61   -20 28 53.2         118698    568  Cd3308      
2001 07  25.32751  19 30 43.47   -20 28 53.4         118698    568  Cd3308      
2002 07  05.32301  19 38 47.40   -19 53 07.0   23.4R 118698    695  Cf8835      
2002 07  05.36408  19 38 47.15   -19 53 07.3   23.6R 118698    695  Cf8835      
2002 07  05.41774  19 38 46.84   -19 53 08.0         118698    695  Cf8835      
2002 07  06.29244  19 38 42.21   -19 53 15.7         118698    695  Cf8835      
2002 07  06.31943  19 38 42.03   -19 53 15.4         118698    695  Cf8835      
2002 07  06.34566  19 38 41.90   -19 53 16.2         118698    695  Cf8835      
2004 10  12.14623  19 45 28.50   -18 57 29.6   24.0R 118698    309  Cn8269      
2004 10  12.99959  19 45 28.97   -18 57 28.9   24.2R 118698    309  Cn8269      
2006 06  13.39938  20 05 46.67   -17 26 47.5   23.4R 118698    250  S~06HA      
2006 06  13.40378  20 05 46.65   -17 26 47.5         118698    250  S~06HA      
2006 06  13.40818  20 05 46.63   -17 26 47.5         118698    250  S~06HA      
2006 06  13.41258  20 05 46.61   -17 26 47.6         118698    250  S~06HA      

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    -0.17       0.00    -0.26
  2   0.0001      0.00    -0.08       0.00     0.25
  3   0.0002      0.00    -0.00       0.00     0.25
  4   0.0024      0.00    -0.00       0.00     0.41
  5   0.0028      0.00     0.09       0.00     0.30
  6   0.0029      0.00     0.08       0.00     0.28
  7   0.0161      0.00    -0.11       0.00     0.45
  8   0.0162      0.00     0.08       0.00     0.06
  9   0.0163      0.00     0.17       0.00     0.22
 10   0.0270      0.00    -0.23       0.00     0.40
 11   0.0270      0.00    -0.09       0.00     0.15
 12   0.0270      0.00     0.11       0.00     0.19
 13   0.0297      0.00    -0.13       0.00    -0.09
 14   0.0297      0.00    -0.02       0.00     0.00
 15   0.0298      0.00    -0.06       0.00    -0.01
 16   0.1562      0.00     0.25       0.00    -0.40
 17   0.1565      0.00    -0.12       0.00    -0.37
 18   0.1589      0.00     0.16       0.00    -0.37
 19   0.8356      0.00     0.32       0.00    -0.07
 20   0.8357      0.00     0.27       0.00    -0.08
 21   0.9887      0.00     0.27       0.00    -0.20
 22   0.9888      0.00     0.21       0.00    -0.11
 23   0.9914      0.00     0.33       0.00    -0.18
 24   0.9915      0.00     0.29       0.00    -0.15
 25   1.9360      0.00     0.47       0.00    -0.44
 26   1.9362      0.00     0.05       0.00    -0.36
 27   1.9363      0.00    -0.24       0.00    -0.57
 28   1.9387      0.00     0.21       0.00    -0.20
 29   1.9388      0.00    -0.29       0.00     0.35
 30   1.9388      0.00    -0.10       0.00    -0.21
 31   4.2080      0.00     0.34       0.00    -0.28
 32   4.2103      0.00     0.02       0.00    -0.22
 33   5.8760      0.00     0.16       0.00     0.19
 34   5.8760      0.00     0.13       0.00     0.22
 35   5.8761      0.00     0.09       0.00     0.25
 36   5.8761      0.00     0.06       0.00     0.17

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.

118698    quality flag:3

Type:         7:4EEE    7:4EEE    7:4EEE

axisobj        43.653    43.653    43.653
ecceobj         0.235     0.235     0.235
incobj         11.228    11.228    11.228
qmin           33.141    32.817    32.478
qmax           54.642    55.217    55.570
amean          43.726    43.726    43.726
amin           43.264    43.273    43.286
amax           44.244    44.236    44.258
emean           0.199     0.201     0.201
emin            0.153     0.143     0.140
emax            0.238     0.249     0.257
imean          14.380    14.319    14.317
imin           12.757    12.040    11.495
imax           16.048    16.652    16.669
excite_mean     0.319     0.320     0.320
fracstop        1.000     1.000     1.000
cjmean          2.976     2.975     2.975

libcent 0       175.8     187.0     187.5
libamp  0       104.5     115.9     116.3
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        89.2      92.2      93.5
kozaiamp         20.1      25.4      27.0