Orbit Fit and Astrometric record for 04VG131

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: 04VG131   
# Created Sat Dec  4 02:10:16 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     17 observations of     17
# Arc:  16.99y
# First observation: 2004/11/09
#  Last observation: 2021/11/05
# Chi-squared of fit:    43.68 DOF:     28 RMS:  0.28
# Min/Max residuals:    -0.50    0.79
# Exact a, adot, b, bdot, g, gdot:
  1.994272E-05  4.293639E-02  3.099359E-06  1.039882E-02  3.239941E-02  2.819322E-03
# Covariance matrix:
  2.8720E-13 -2.7379E-13  3.5122E-14 -6.3524E-14  2.9332E-13 -3.2515E-13
 -2.7379E-13  4.3897E-13 -5.7978E-14  1.0466E-13 -4.1746E-13  5.3570E-13
  3.5122E-14 -5.7978E-14  1.3123E-13 -2.1982E-14  5.3212E-14 -7.1076E-14
 -6.3524E-14  1.0466E-13 -2.1982E-14  2.6902E-14 -9.8264E-14  1.2828E-13
  2.9332E-13 -4.1746E-13  5.3212E-14 -9.8264E-14  1.1218E-12 -5.0334E-13
 -3.2515E-13  5.3570E-13 -7.1076E-14  1.2828E-13 -5.0334E-13  6.5659E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.821595   39.196218   -0.135534   -0.013999   -0.983441  2453318.881743
# Heliocentric elements and errors
Epoch:              2453318.5000  =  2004/11/09
Mean Anomaly:            3.24939 +/-     0.002
Argument of Peri:      345.22194 +/-     0.002
Long of Asc Node:       42.72460 +/-     0.000
Inclination:            13.66057 +/-     0.000
Eccentricity:         0.50518627 +/-    0.0002
Semi-Major Axis:     63.93229709 +/-    0.0251
Time of Perihelion: 2451633.1942 +/-       1.4
Perihelion:          31.63457826 +/-    0.0169
Aphelion:            96.23001593 +/-    0.0394
Period (y)              511.1974 +/-      0.30
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           24.58923918 +/-    0.0008
Ecliptic Y           20.23161746 +/-    0.0006
Ecliptic Z           -0.44248033 +/-    0.0000
Ecliptic XDOT        -0.00209977 +/-    0.0000
Ecliptic YDOT         0.00296318 +/-    0.0000
Ecliptic ZDOT         0.00087532 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   31.84559627 +/-    0.0007
Geocenter to KBO     30.86475988 +/-    0.0010
# Hcoef:  8.47

The following table shows the complete astrometric record for 04VG131. 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 (04VG131) followed by the observatory code and reference code for the source of the astrometry.

2004 11  09.38100  02 28 17.40   +13 46 50.2   23.9g 04VG131   568  C~0X5c      
2004 11  09.40749  02 28 17.23   +13 46 49.3   23.7g 04VG131   568  C~0X5c      
2004 11  09.43348  02 28 17.07   +13 46 48.8   23.4g 04VG131   568  C~0X5c      
2004 11  10.29631  02 28 11.93   +13 46 29.2   23.8g 04VG131   568  C~0X5c      
2005 01  05.21317  02 24 13.88   +13 33 36.1   23.5i 04VG131   568  C~0X5c      
2005 01  05.26915  02 24 13.79   +13 33 36.1   23.7i 04VG131   568  C~0X5c      
2005 01  05.33911  02 24 13.68   +13 33 36.3   23.6i 04VG131   568  C~0X5c      
2005 10  25.50591  02 38 40.20   +15 12 18.1         04VG131   568  C~0X5c      
2005 10  25.53845  02 38 39.99   +15 12 17.3         04VG131   568  C~0X5c      
2005 10  25.57213  02 38 39.78   +15 12 16.6         04VG131   568  C~0X5c      
2005 10  26.54602  02 38 33.92   +15 11 55.3         04VG131   568  C~0X5c      
2006 10  23.23995  02 47 48.68   +16 30 51.5         04VG131   675  C~0X5c      
2006 10  23.27984  02 47 48.50   +16 30 50.8         04VG131   675  C~0X5c      
2006 10  23.33030  02 47 48.16   +16 30 49.8   23. R 04VG131   675  C~0X5c      
2021 11  05.424520 05 01 23.243  +30 38 41.64  23.9G 04VG131   G37  C~5B8X      
2021 11  05.465730 05 01 23.034  +30 38 41.48        04VG131   G37  C~5B8X      
2021 11  05.507400 05 01 22.806  +30 38 41.91        04VG131   G37  C~5B8X      

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     0.07       0.00     0.45
     2   0.0001      0.00    -0.04       0.00     0.16
     3   0.0001      0.00    -0.05       0.00     0.26
     4   0.0025      0.00     0.50       0.00     0.40
     5   0.1556      0.00    -0.13       0.00    -0.11
     6   0.1558      0.00    -0.08       0.00    -0.09
     7   0.1559      0.00     0.01       0.00     0.13
     8   0.9586      0.00    -0.20       0.00    -0.42
     9   0.9587      0.00    -0.36       0.00    -0.50
    10   0.9588      0.00    -0.42       0.00    -0.44
    11   0.9614      0.00    -0.11       0.00    -0.26
    12   1.9517      0.00    -0.11       0.00     0.06
    13   1.9518      0.00     0.79       0.00     0.16
    14   1.9519      0.00     0.26       0.00     0.17
    15  16.9885      0.00    -0.06       0.00     0.17
    16  16.9886      0.00     0.08       0.00    -0.17
    17  16.9887      0.00    -0.05       0.00     0.07

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.

04VG131    quality flag:2

Type:       SCATNEAR  CENTAURS  CENTAURS

axisobj        65.488    65.488    65.488
ecceobj         0.517     0.517     0.517
incobj         13.613    13.613    13.613
qmin           30.307    29.842    29.882
qmax          120.473   139.139   235.333
amean          67.139    73.790    90.696
amin           61.228    63.434    63.090
amax           76.158    85.362   133.673
emean           0.525     0.577     0.639
emin            0.477     0.497     0.497
emax            0.582     0.630     0.761
imean          12.871    10.245     9.431
imin           10.183     7.881     7.177
imax           15.015    13.147    13.199
excite_mean     0.571     0.604     0.661
fracstop        1.000     1.000     1.000
cjmean          2.923     2.922     2.921

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       167.6     162.0     161.8
kozaiamp        180.0     180.0     180.0