Orbit Fit and Astrometric record for 04VC131

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: 04VC131   
# Created Wed Oct 17 01:08:32 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   15 observations of   15
# Arc:   7.12y
# First observation: 2004/11/09
#  Last observation: 2011/12/25
# Chi-squared of fit:    14.58 DOF:   24 RMS:  0.17
# Min/Max residuals:    -0.25    0.47
# Exact a, adot, b, bdot, g, gdot:
  1.621620E-05  2.570134E-02 -4.764378E-07  1.817825E-05  2.517265E-02 -2.635303E-04
# Covariance matrix:
  3.3077E-13 -2.3117E-13  8.3050E-17 -1.0523E-16 -2.0769E-13 -9.9107E-13
 -2.3117E-13  3.5449E-13 -4.3717E-16  5.5318E-16 -2.5785E-13  2.1656E-12
  8.3050E-17 -4.3717E-16  1.8055E-13 -5.0658E-14  1.5355E-15 -3.7179E-15
 -1.0523E-16  5.5318E-16 -5.0658E-14  3.3837E-14 -1.9420E-15  4.7039E-15
 -2.0769E-13 -2.5785E-13  1.5355E-15 -1.9420E-15  2.7694E-12 -3.3977E-12
 -9.9107E-13  2.1656E-12 -3.7179E-15  4.7039E-15 -3.3977E-12  1.5697E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.500653   39.448116   -0.131209   -0.008495   -0.984091  2453318.881743
# Heliocentric elements and errors
Epoch:              2453318.5000  =  2004/11/09
Mean Anomaly:          353.41142 +/-     0.127
Argument of Peri:      282.68209 +/-     0.154
Long of Asc Node:      124.58143 +/-     0.048
Inclination:             0.49052 +/-     0.000
Eccentricity:         0.07195154 +/-    0.0002
Semi-Major Axis:     43.83709942 +/-    0.0135
Time of Perihelion: 2455258.7178 +/-      60.8
Perihelion:          40.68295261 +/-    0.0156
Aphelion:            46.99124622 +/-    0.0172
Period (y)              290.2491 +/-      0.13
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           31.34690333 +/-    0.0020
Ecliptic Y           25.96767998 +/-    0.0017
Ecliptic Z           -0.34714409 +/-    0.0000
Ecliptic XDOT        -0.00179940 +/-    0.0000
Ecliptic YDOT         0.00213319 +/-    0.0000
Ecliptic ZDOT         0.00000232 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.70712130 +/-    0.0019
Geocenter to KBO     39.72570333 +/-    0.0026
# Hcoef:  6.15

The following table shows the complete astrometric record for 04VC131. 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 (04VC131) followed by the observatory code and reference code for the source of the astrometry.

2004 11  09.38100  02 28 51.31   +14 09 53.5   22.2g 04VC131   568  C~0VDw      
2004 11  09.40749  02 28 51.17   +14 09 53.1   22.4g 04VC131   568  C~0VDw      
2004 11  09.43348  02 28 51.04   +14 09 52.3   22.5g 04VC131   568  C~0VDw      
2004 11  10.29631  02 28 46.86   +14 09 31.9   22.3g 04VC131   568  C~0VDw      
2005 10  25.50591  02 35 51.70   +14 43 30.8   21.9r 04VC131   568  C~0VDw      
2005 10  25.53845  02 35 51.54   +14 43 30.1   21.7r 04VC131   568  C~0VDw      
2005 10  25.57214  02 35 51.37   +14 43 29.3   22.1r 04VC131   568  C~0VDw      
2005 10  26.54602  02 35 46.61   +14 43 06.9   22.0r 04VC131   568  C~0VDw      
2006 10  21.97770  02 41 57.45   +15 12 00.2         04VC131   950  C~0VDw      
2006 10  22.06374  02 41 57.03   +15 11 58.3         04VC131   950  C~0VDw      
2006 10  22.13981  02 41 56.65   +15 11 56.7         04VC131   950  C~0VDw      
2006 11  24.24560  02 39 15.02   +14 59 31.7         04VC131   695  C~0VDw      
2006 11  24.35087  02 39 14.53   +14 59 29.5         04VC131   695  C~0VDw      
2011 12  25.18791  03 06 22.61   +16 58 56.5   21.9R 04VC131   688  C~0bd1      
2011 12  25.24494  03 06 22.41   +16 58 56.4         04VC131   688  C~0bd1      

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     0.01       0.00     0.11
  2   0.0001      0.00    -0.12       0.00     0.33
  3   0.0001      0.00    -0.13       0.00     0.14
  4   0.0025      0.00    -0.00       0.00     0.04
  5   0.9586      0.00     0.25       0.00     0.00
  6   0.9587      0.00     0.27       0.00     0.06
  7   0.9588      0.00     0.22       0.00     0.04
  8   0.9614      0.00     0.17       0.00     0.19
  9   1.9482      0.00     0.03       0.00    -0.25
 10   1.9485      0.00     0.02       0.00    -0.25
 11   1.9487      0.00    -0.12       0.00    -0.16
 12   2.0393      0.00     0.10       0.00    -0.16
 13   2.0396      0.00     0.17       0.00    -0.11
 14   7.1234      0.00     0.03       0.00    -0.19
 15   7.1235      0.00    -0.01       0.00     0.47

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.

04VC131    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.371    44.371    44.371
ecceobj         0.083     0.083     0.083
incobj          0.491     0.491     0.491
qmin           39.494    39.502    39.541
qmax           48.762    48.772    48.801
amean          44.008    44.008    44.006
amin           43.643    43.647    43.659
amax           44.389    44.388    44.394
emean           0.083     0.083     0.083
emin            0.066     0.067     0.065
emax            0.099     0.099     0.100
imean           1.482     1.477     1.457
imin            0.578     0.570     0.515
imax            2.191     2.192     2.194
excite_mean     0.087     0.087     0.087
fracstop        1.000     1.000     1.000
cjmean          3.092     3.092     3.092

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       203.1     203.3     201.2
kozaiamp        180.0     180.0     179.9