Orbit Fit and Astrometric record for 118378

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: 118378    
# Created Sun Oct 26 01:36:40 2014
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   25 observations of   25
# Arc:   6.06y
# First observation: 1999/04/17
#  Last observation: 2005/05/10
# Chi-squared of fit:    76.05 DOF:   44 RMS:  0.31
# Min/Max residuals:    -0.48    0.90
# Exact a, adot, b, bdot, g, gdot:
  1.196508E-05  2.439346E-02 -7.877059E-08 -9.979472E-04  2.460931E-02 -2.537716E-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
    4.582693 -154.292419   -0.016285    0.080549   -1.007987  2451285.747113
# Heliocentric elements and errors
Epoch:              2451286.5000  =  1999/04/18
Mean Anomaly:          298.23447 +/-     0.000
Argument of Peri:      191.56363 +/-     0.000
Long of Asc Node:       87.86886 +/-     0.000
Inclination:             5.05613 +/-     0.000
Eccentricity:         0.11203711 +/-    0.0000
Semi-Major Axis:     43.48349114 +/-    0.0000
Time of Perihelion: 2469255.6991 +/-       0.0
Perihelion:          38.61172664 +/-    0.0000
Aphelion:            48.35525565 +/-    0.0000
Period (y)              286.7443 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -37.39158664 +/-    0.0000
Ecliptic Y          -18.02333403 +/-    0.0000
Ecliptic Z            3.24666986 +/-    0.0000
Ecliptic XDOT         0.00142034 +/-    0.0000
Ecliptic YDOT        -0.00231823 +/-    0.0000
Ecliptic ZDOT        -0.00013321 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.63553396 +/-    0.0000
Geocenter to KBO     40.63511844 +/-    0.0000
# Hcoef:  7.00

The following table shows the complete astrometric record for 118378. 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 (118378) followed by the observatory code and reference code for the source of the astrometry.

1999 04  17.24637  13 42 01.28   -05 39 49.6   23.1R 118378    695  Ca4930      
1999 04  17.33279  13 42 00.81   -05 39 46.9         118378    695  Ca4930      
1999 04  17.41962  13 42 00.45   -05 39 44.8         118378    695  Ca4930      
1999 05  06.92759  13 40 32.78   -05 31 55.4         118378    950  Ca4930      
1999 05  06.99642  13 40 32.49   -05 31 54.0         118378    950  Ca4930      
1999 06  05.91231  13 38 44.32   -05 23 48.1   23.0R 118378    950  Ca5574      
1999 06  05.96603  13 38 44.16   -05 23 47.2   22.9R 118378    950  Ca5574      
1999 06  06.02556  13 38 44.01   -05 23 46.8   23.2R 118378    950  Ca5574      
2000 03  31.56036  13 48 22.68   -06 20 04.0   23.6R 118378    568  Cb1943      
2000 03  31.58447  13 48 22.55   -06 20 03.4   23.6R 118378    568  Cb1943      
2000 04  02.57830  13 48 13.86   -06 19 11.3   23.7R 118378    568  Cb1943      
2000 04  02.60683  13 48 13.71   -06 19 10.5   23.5R 118378    568  Cb1943      
2001 03  24.42240  13 54 05.46   -06 56 25.0   23.0R 118378    695  Cc7487      
2001 03  24.49709  13 54 05.14   -06 56 23.2         118378    695  Cc7487      
2001 03  25.27529  13 54 02.00   -06 56 02.5   20.5  118378    304  Ce8605      
2001 03  25.30194  13 54 01.89   -06 56 01.9         118378    304  Ce8605      
2001 05  19.47444  13 49 58.16   -06 34 08.9   22.9R 118378    568  Ce6449      
2001 05  20.32061  13 49 54.86   -06 33 54.1         118378    568  Ce6449      
2001 05  20.41978  13 49 54.46   -06 33 52.1         118378    568  Ce6449      
2005 04  10.38084  14 14 06.73   -09 01 51.3   23.4R 118378    695  Cn3058      
2005 04  10.45780  14 14 06.38   -09 01 49.6         118378    695  Cn3058      
2005 04  11.34846  14 14 02.38   -09 01 28.0         118378    695  Cn3058      
2005 05  09.19573  14 11 52.58   -08 50 28.7   21.7R 118378    807  Cn5292      
2005 05  10.19076  14 11 48.05   -08 50 07.9         118378    807  Cn5292      
2005 05  10.27546  14 11 47.66   -08 50 06.1         118378    807  Cn5292      

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     0.89
  2   0.0002      0.00    -0.27       0.00     0.06
  3   0.0005      0.00     0.41       0.00    -0.08
  4   0.0539      0.00     0.17       0.00     0.05
  5   0.0541      0.00     0.33       0.00    -0.04
  6   0.1360      0.00    -0.21       0.00    -0.13
  7   0.1361      0.00    -0.33       0.00     0.24
  8   0.1363      0.00    -0.07       0.00     0.05
  9   0.9564      0.00    -0.13       0.00    -0.23
 10   0.9564      0.00    -0.48       0.00    -0.26
 11   0.9619      0.00    -0.07       0.00    -0.39
 12   0.9620      0.00    -0.41       0.00    -0.34
 13   1.9361      0.00     0.33       0.00    -0.01
 14   1.9363      0.00     0.12       0.00    -0.08
 15   1.9385      0.00     0.23       0.00     0.90
 16   1.9386      0.00     0.24       0.00     0.83
 17   2.0896      0.00     0.27       0.00     0.00
 18   2.0919      0.00     0.22       0.00    -0.23
 19   2.0922      0.00     0.12       0.00     0.02
 20   5.9826      0.00    -0.15       0.00     0.11
 21   5.9828      0.00    -0.10       0.00    -0.09
 22   5.9852      0.00     0.30       0.00    -0.36
 23   6.0615      0.00     0.05       0.00     0.36
 24   6.0642      0.00     0.00       0.00    -0.21
 25   6.0644      0.00     0.01       0.00    -0.22

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.

118378    quality flag:3

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

axisobj        43.469    43.469    43.470
ecceobj         0.111     0.111     0.111
incobj          5.058     5.058     5.058
qmin           38.359    38.347    38.385
qmax           49.504    49.510    49.512
amean          43.726    43.726    43.726
amin           43.308    43.307    43.314
amax           44.177    44.176    44.172
emean           0.109     0.109     0.109
emin            0.096     0.096     0.096
emax            0.121     0.121     0.121
imean           3.311     3.314     3.311
imin            2.465     2.466     2.463
imax            4.142     4.145     4.140
excite_mean     0.124     0.124     0.124
fracstop        1.000     1.000     1.000
cjmean          3.080     3.080     3.080

libcent 0       181.4     180.4     179.8
libamp  0       140.4     140.2     140.3
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       186.1     186.1     186.1
kozaiamp        180.0     180.0     179.9