Orbit Fit and Astrometric record for 04VU75

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: 04VU75    
# Created Fri Nov 16 02:08:32 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   20 observations of   20
# Arc:   8.91y
# First observation: 2004/11/09
#  Last observation: 2013/10/06
# Chi-squared of fit:    46.84 DOF:   34 RMS:  0.27
# Min/Max residuals:    -0.47    0.58
# Exact a, adot, b, bdot, g, gdot:
  1.435379E-05  2.398907E-02 -5.491568E-07  1.169031E-03  2.439492E-02  2.808937E-03
# Covariance matrix:
  1.9220E-13 -1.1708E-13  3.2256E-15 -4.3822E-15  1.1142E-14 -4.2089E-13
 -1.1708E-13  1.3853E-13 -4.2175E-15  5.7915E-15 -2.6380E-14  5.5718E-13
  3.2256E-15 -4.2175E-15  1.1895E-13 -1.9670E-14 -2.7201E-15 -1.9170E-14
 -4.3822E-15  5.7915E-15 -1.9670E-14  8.7525E-15  9.1558E-16  2.5457E-14
  1.1142E-14 -2.6380E-14 -2.7201E-15  9.1558E-16  5.2236E-13  4.6085E-14
 -4.2089E-13  5.5718E-13 -1.9170E-14  2.5457E-14  4.6085E-14  2.4362E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.856587   19.570029   -0.454891   -0.028504   -0.882090  2453318.678513
# Heliocentric elements and errors
Epoch:              2453318.5000  =  2004/11/09
Mean Anomaly:           66.39881 +/-     0.032
Argument of Peri:      246.14400 +/-     0.041
Long of Asc Node:       53.01886 +/-     0.002
Inclination:             3.35046 +/-     0.000
Eccentricity:         0.13126541 +/-    0.0001
Semi-Major Axis:     43.48308295 +/-    0.0059
Time of Perihelion: 2434001.6328 +/-      10.1
Perihelion:          37.77525811 +/-    0.0061
Aphelion:            49.19090778 +/-    0.0074
Period (y)              286.7403 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           39.27860635 +/-    0.0011
Ecliptic Y           14.44893102 +/-    0.0004
Ecliptic Z           -1.32807076 +/-    0.0000
Ecliptic XDOT        -0.00060210 +/-    0.0000
Ecliptic YDOT         0.00263655 +/-    0.0000
Ecliptic ZDOT         0.00012101 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.87287372 +/-    0.0011
Geocenter to KBO     40.99210243 +/-    0.0012
# Hcoef:  6.64

The following table shows the complete astrometric record for 04VU75. 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 (04VU75) followed by the observatory code and reference code for the source of the astrometry.

2004 11  09.17777  01 15 04.81   +05 56 15.2   22.3R 04VU75    695  Cm0643      
2004 11  10.24839  01 15 00.54   +05 55 51.8         04VU75    695  Cm0643      
2004 11  10.34874  01 15 00.12   +05 55 49.4         04VU75    695  Cm0643      
2004 12  10.07816  01 13 29.41   +05 48 01.7   22.2R 04VU75    688  Cm1784      
2004 12  10.17403  01 13 29.23   +05 48 00.0         04VU75    688  Cm1784      
2004 12  11.07140  01 13 27.54   +05 47 52.3   22.9R 04VU75    688  Cm1784      
2004 12  11.15282  01 13 27.35   +05 47 51.9         04VU75    688  Cm1784      
2005 09  28.306978 01 23 11.89   +06 48 45.8   22.8V 04VU75    645  C~1PqZ      
2005 09  28.307807 01 23 11.89   +06 48 45.8   22.2V 04VU75    645  C~1Pqa      
2005 09  28.310295 01 23 11.87   +06 48 45.8   23.7V 04VU75    645  C~1Pqa      
2006 10  19.29234  01 26 37.61   +07 13 45.0   22.1R 04VU75    695  Ct0489      
2006 10  20.19936  01 26 33.48   +07 13 20.9         04VU75    695  Ct0489      
2006 10  20.32997  01 26 32.86   +07 13 17.6         04VU75    695  Ct0489      
2006 12  21.11941  01 23 04.20   +06 54 57.3   22.9R 04VU75    695  Ct5519      
2006 12  21.24853  01 23 04.01   +06 54 56.9         04VU75    695  Ct5519      
2007 11  08.27966  01 30 08.21   +07 39 20.5         04VU75    695  Cy4017      
2007 11  08.31917  01 30 08.04   +07 39 19.5         04VU75    695  Cy4017      
2013 10  05.42574  02 02 13.19   +11 06 36.5   23.1R 04VU75    695  C~0zdg      
2013 10  05.48971  02 02 12.92   +11 06 35.0         04VU75    695  C~0zdg      
2013 10  06.43854  02 02 08.84   +11 06 13.4         04VU75    695  C~0zdg      

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     0.13       0.00     0.34
  2   0.0029      0.00    -0.10       0.00     0.40
  3   0.0032      0.00    -0.37       0.00     0.18
  4   0.0846      0.00    -0.38       0.00     0.44
  5   0.0849      0.00    -0.12       0.00    -0.42
  6   0.0873      0.00     0.58       0.00    -0.47
  7   0.0875      0.00     0.14       0.00    -0.20
  8   0.8847      0.00     0.26       0.00    -0.34
  9   0.8847      0.00     0.32       0.00    -0.32
 10   0.8847      0.00     0.18       0.00    -0.25
 11   1.9414      0.00    -0.39       0.00     0.32
 12   1.9439      0.00    -0.10       0.00    -0.01
 13   1.9443      0.00    -0.29       0.00     0.11
 14   2.1135      0.00     0.23       0.00    -0.24
 15   2.1138      0.00     0.05       0.00    -0.04
 16   2.9955      0.00    -0.04       0.00     0.39
 17   2.9956      0.00    -0.05       0.00     0.30
 18   8.9042      0.00     0.02       0.00    -0.07
 19   8.9043      0.00     0.13       0.00    -0.10
 20   8.9069      0.00    -0.09       0.00     0.01

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.

04VU75    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        44.030    44.030    44.030
ecceobj         0.135     0.135     0.135
incobj          3.338     3.338     3.338
qmin           37.209    37.100    37.313
qmax           50.833    50.932    50.723
amean          43.731    43.717    43.707
amin           43.250    43.266    43.266
amax           44.230    44.229    44.231
emean           0.121     0.122     0.114
emin            0.091     0.087     0.078
emax            0.150     0.152     0.147
imean           1.777     1.804     1.702
imin            0.222     0.347     0.346
imax            2.764     2.771     2.764
excite_mean     0.125     0.126     0.119
fracstop        1.000     1.000     1.000
cjmean          3.079     3.078     3.080

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       186.3     182.3     185.9
kozaiamp        179.9     179.9     180.0