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 16 02:37:24 2017
# Orbit generated from Bernstein formalism
# Fitting   14 observations of   14
# Arc:   1.95y
# First observation: 2004/11/09
#  Last observation: 2006/10/23
Preliminary a, adot, b, bdot, g, gdot:
   0.000042   0.042815  -0.000008   0.010366   0.032007   0.000000
# Chi-squared of fit:    16.28 DOF:   22 RMS:  0.19
# Min/Max residuals:    -0.44    0.42
# Exact a, adot, b, bdot, g, gdot:
  2.108120E-05  4.292894E-02  3.744595E-06  1.039663E-02  3.239958E-02  2.737212E-03
# Covariance matrix:
  3.6581E-13 -7.0794E-13  1.4319E-14 -9.8249E-14  3.2540E-13 -5.0236E-12
 -7.0794E-13  3.0579E-12 -8.7160E-14  5.7543E-13 -5.2781E-13  2.9314E-11
  1.4319E-14 -8.7160E-14  2.0949E-13 -1.5671E-13  1.6716E-15 -9.4292E-13
 -9.8249E-14  5.7543E-13 -1.5671E-13  3.1079E-13 -2.8852E-14  6.1606E-12
  3.2540E-13 -5.2781E-13  1.6716E-15 -2.8852E-14  1.1551E-12 -1.5584E-12
 -5.0236E-12  2.9314E-11 -9.4292E-13  6.1606E-12 -1.5584E-12  3.1352E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.821595   39.196218   -0.135534   -0.013999   -0.983442  2453318.881743
# Heliocentric elements and errors
Epoch:              2453310.5000  =  2004/11/01
Mean Anomaly:            3.15894 +/-     0.018
Argument of Peri:      345.52214 +/-     0.065
Long of Asc Node:       42.72466 +/-     0.000
Inclination:            13.66002 +/-     0.001
Eccentricity:         0.50412453 +/-    0.0003
Semi-Major Axis:     63.81769035 +/-    0.0353
Time of Perihelion: 2451676.5114 +/-       9.4
Perihelion:          31.64562724 +/-    0.0255
Aphelion:            95.98975346 +/-    0.0562
Period (y)              509.8235 +/-      0.42
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           24.58909197 +/-    0.0008
Ecliptic Y           20.23154275 +/-    0.0006
Ecliptic Z           -0.44245810 +/-    0.0000
Ecliptic XDOT        -0.00210474 +/-    0.0000
Ecliptic YDOT         0.00295829 +/-    0.0000
Ecliptic ZDOT         0.00087523 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   31.84547904 +/-    0.0007
Geocenter to KBO     30.86459547 +/-    0.0010
# Hcoef:  8.98

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      

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    -0.03       0.00     0.27
  2   0.0001     -2.63    -0.22      -0.07     0.03
  3   0.0001     -5.00    -0.20       0.20     0.12
  4   0.0025    -82.23     0.35       5.38     0.09
  5   0.1556  -3617.42    -0.09     381.18    -0.13
  6   0.1558  -3618.66    -0.03     381.60    -0.13
  7   0.1559  -3620.11     0.12     382.31     0.06
  8   0.9586  10201.73     0.10    2050.49    -0.20
  9   0.9587  10198.59    -0.07    2050.66    -0.23
 10   0.9588  10195.47    -0.11    2050.93    -0.16
 11   0.9614  10107.99     0.24    2056.66    -0.08
 12   1.9517  19217.58    -0.44    4169.52     0.17
 13   1.9518  19214.87     0.42    4169.62     0.01
 14   1.9519  19209.86    -0.07    4170.11     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.

04VG131    quality flag:2

Type:       CENTAURS     3:1EE  CENTAURS

axisobj        65.360    65.473    65.247
ecceobj         0.516     0.517     0.515
incobj         13.612    13.612    13.613
qmin           30.026    30.851    29.945
qmax          104.606    99.300   120.770
amean          59.868    62.635    66.681
amin           54.550    61.354    61.039
amax           67.740    65.473    76.250
emean           0.475     0.495     0.528
emin            0.420     0.481     0.481
emax            0.545     0.517     0.588
imean          12.198    12.936    10.456
imin           10.090    12.055     7.943
imax           14.359    13.376    13.201
excite_mean     0.520     0.543     0.559
fracstop        1.000     1.000     1.000
cjmean          2.927     2.924     2.934

libcent 0      -180.0     177.4    -180.0
libamp  0      -180.0     176.6    -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       171.1     153.3     182.6
kozaiamp        180.0     180.0     180.0