Orbit Fit and Astrometric record for 04VU131

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: 04VU131   
# Created Sat Jan 19 02:08:42 2019
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   44 observations of   44
# Arc:  13.09y
# First observation: 2004/11/09
#  Last observation: 2017/12/13
# Chi-squared of fit:    20.74 DOF:   82 RMS:  0.12
# Min/Max residuals:    -0.40    0.48
# Exact a, adot, b, bdot, g, gdot:
  1.659242E-05  2.551858E-02  2.933613E-07 -3.372937E-04  2.487806E-02  1.713991E-04
# Covariance matrix:
  2.3063E-13 -8.2125E-14 -7.6931E-16  8.8666E-16 -5.8422E-14 -2.0332E-13
 -8.2125E-14  7.5968E-14  8.4938E-16 -9.7850E-16  5.4247E-14  2.2468E-13
 -7.6931E-16  8.4938E-16  1.6895E-13 -1.4813E-14  6.2256E-16  2.5666E-15
  8.8666E-16 -9.7850E-16 -1.4813E-14  1.6282E-15 -7.2244E-16 -2.9567E-15
 -5.8422E-14  5.4247E-14  6.2256E-16 -7.2244E-16  1.5837E-13  1.6234E-13
 -2.0332E-13  2.2468E-13  2.5666E-15 -2.9567E-15  1.6234E-13  6.7896E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.136304   37.388938   -0.166373   -0.002225   -0.978796  2453318.875253
# Heliocentric elements and errors
Epoch:              2453318.5000  =  2004/11/09
Mean Anomaly:            4.93525 +/-     0.018
Argument of Peri:      183.98947 +/-     0.022
Long of Asc Node:      207.65071 +/-     0.003
Inclination:             0.76813 +/-     0.000
Eccentricity:         0.09407932 +/-    0.0000
Semi-Major Axis:     45.42664202 +/-    0.0029
Time of Perihelion: 2451785.3990 +/-       5.5
Perihelion:          41.15293463 +/-    0.0033
Aphelion:            49.70034942 +/-    0.0038
Period (y)              306.1781 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           32.60896511 +/-    0.0005
Ecliptic Y           25.13562688 +/-    0.0004
Ecliptic Z           -0.09561695 +/-    0.0000
Ecliptic XDOT        -0.00169154 +/-    0.0000
Ecliptic YDOT         0.00223553 +/-    0.0000
Ecliptic ZDOT        -0.00003707 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.17223588 +/-    0.0005
Geocenter to KBO     40.19610102 +/-    0.0006
# Hcoef:  7.51

The following table shows the complete astrometric record for 04VU131. 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 (04VU131) followed by the observatory code and reference code for the source of the astrometry.

2004 11  09.37451  02 20 20.01   +13 50 54.7   23.7g 04VU131   568  C~2obZ      
2004 11  09.40092  02 20 19.89   +13 50 54.1   23.7g 04VU131   568  C~2obZ      
2004 11  09.42696  02 20 19.77   +13 50 53.3   23.8g 04VU131   568  C~2obZ      
2004 11  10.28884  02 20 15.69   +13 50 32.7   23.8g 04VU131   568  C~2obZ      
2005 10  25.49229  02 27 16.45   +14 24 05.0   23.3r 04VU131   568  C~2obZ      
2005 10  25.53041  02 27 16.28   +14 24 04.2   23.3r 04VU131   568  C~2obZ      
2005 10  25.56395  02 27 16.11   +14 24 03.4   23.4r 04VU131   568  C~2obZ      
2006 10  23.23208  02 33 13.14   +14 51 32.8         04VU131   675  C~2obZ      
2006 10  23.27265  02 33 12.96   +14 51 31.7         04VU131   675  C~2obZ      
2006 10  23.31197  02 33 12.75   +14 51 31.3         04VU131   675  C~2obZ      
2006 11  25.20987  02 30 35.99   +14 38 54.5         04VU131   695  C~2obZ      
2006 11  25.30049  02 30 35.58   +14 38 52.8         04VU131   695  C~2obZ      
2015 08  20.54457  03 28 10.909  +18 32 04.07  23.8w 04VU131   568  C~2obZ      
2015 08  20.55007  03 28 10.908  +18 32 04.04  23.9w 04VU131   568  C~2obZ      
2015 09  07.60044  03 28 06.246  +18 31 35.41  24.0w 04VU131   568  C~2obZ      
2015 10  07.49766  03 26 53.214  +18 26 54.53  23.8w 04VU131   568  C~2obZ      
2015 10  07.55607  03 26 52.998  +18 26 53.75  23.8w 04VU131   568  C~2obZ      
2015 10  09.53675  03 26 45.677  +18 26 26.29  23.8w 04VU131   568  C~2obZ      
2015 11  06.31257  03 24 41.457  +18 18 42.86  23.4r 04VU131   568  C~2obZ      
2015 11  06.37589  03 24 41.148  +18 18 41.77  23.5r 04VU131   568  C~2obZ      
2015 11  06.44667  03 24 40.783  +18 18 40.53  23.6r 04VU131   568  C~2obZ      
2015 11  07.46686  03 24 35.701  +18 18 21.55  23.9w 04VU131   568  C~2obZ      
2015 11  17.44798  03 23 45.386  +18 15 14.45  23.6w 04VU131   568  C~2obZ      
2015 11  17.49527  03 23 45.144  +18 15 13.57  23.7w 04VU131   568  C~2obZ      
2015 12  06.31417  03 22 12.668  +18 09 29.47  23.7w 04VU131   568  C~2oba      
2015 12  06.44064  03 22 12.068  +18 09 27.18  23.3w 04VU131   568  C~2oba      
2015 12  06.44787  03 22 12.008  +18 09 27.21  23.5w 04VU131   568  C~2oba      
2015 12  31.33561  03 20 32.699  +18 03 18.58  23.8w 04VU131   568  C~2oba      
2016 02  11.26421  03 19 40.131  +18 00 13.23  24.0w 04VU131   568  C~2oba      
2016 09  27.53935  03 33 15.657  +18 48 32.29  23.9w 04VU131   568  C~2oba      
2016 10  09.53365  03 32 36.025  +18 46 07.74  23.9w 04VU131   568  C~2oba      
2016 10  09.60571  03 32 35.751  +18 46 06.69  23.9w 04VU131   568  C~2oba      
2016 10  28.47058  03 31 15.108  +18 41 15.91  23.8w 04VU131   568  C~2oba      
2016 10  28.49380  03 31 14.994  +18 41 15.43  23.8w 04VU131   568  C~2oba      
2016 10  29.53251  03 31 10.066  +18 40 57.76  23.8w 04VU131   568  C~2oba      
2016 11  02.58549  03 30 50.492  +18 39 47.47  23.6w 04VU131   568  C~2oba      
2016 11  04.45547  03 30 41.324  +18 39 14.49  23.7w 04VU131   568  C~2oba      
2016 12  24.34518  03 26 45.624  +18 25 09.17  23.9w 04VU131   568  C~2oba      
2016 12  24.36175  03 26 45.567  +18 25 09.03  23.8w 04VU131   568  C~2oba      
2017 01  27.31949  03 25 25.919  +18 20 29.11  23.6w 04VU131   568  C~2oba      
2017 09  15.55809  03 39 35.021  +19 09 08.31  23.6w 04VU131   568  C~2oba      
2017 09  20.60688  03 39 25.455  +19 08 33.13  23.9w 04VU131   568  C~2oba      
2017 12  13.36234  03 33 24.977  +18 47 40.13  23.7w 04VU131   568  C~2oba      
2017 12  13.40466  03 33 24.790  +18 47 39.46  23.7w 04VU131   568  C~2oba      

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    -0.04       0.00    -0.12
  2   0.0001      0.00     0.08       0.00    -0.09
  3   0.0001      0.00     0.17       0.00    -0.27
  4   0.0025      0.00     0.11       0.00    -0.22
  5   0.9586      0.00    -0.40       0.00     0.01
  6   0.9587      0.00    -0.15       0.00     0.12
  7   0.9588      0.00    -0.24       0.00     0.12
  8   1.9517      0.00     0.20       0.00     0.16
  9   1.9518      0.00     0.45       0.00    -0.02
 10   1.9519      0.00     0.16       0.00     0.48
 11   2.0420      0.00    -0.05       0.00    -0.11
 12   2.0422      0.00    -0.09       0.00     0.13
 13  10.7766      0.00     0.03       0.00    -0.01
 14  10.7767      0.00    -0.03       0.00    -0.05
 15  10.8261      0.00    -0.10       0.00    -0.02
 16  10.9079      0.00    -0.03       0.00    -0.07
 17  10.9081      0.00    -0.02       0.00    -0.05
 18  10.9135      0.00    -0.02       0.00    -0.02
 19  10.9896      0.00    -0.05       0.00    -0.06
 20  10.9897      0.00     0.10       0.00     0.00
 21  10.9899      0.00    -0.00       0.00     0.07
 22  10.9927      0.00    -0.00       0.00    -0.02
 23  11.0201      0.00    -0.08       0.00     0.00
 24  11.0202      0.00    -0.06       0.00     0.02
 25  11.0717      0.00     0.07       0.00    -0.03
 26  11.0720      0.00     0.08       0.00    -0.12
 27  11.0721      0.00    -0.31       0.00     0.03
 28  11.1402      0.00    -0.02       0.00     0.01
 29  11.2550      0.00     0.01       0.00     0.01
 30  11.8827      0.00    -0.04       0.00    -0.01
 31  11.9156      0.00    -0.04       0.00     0.02
 32  11.9158      0.00    -0.01       0.00    -0.05
 33  11.9674      0.00     0.08       0.00     0.05
 34  11.9675      0.00     0.05       0.00    -0.04
 35  11.9703      0.00     0.08       0.00     0.00
 36  11.9814      0.00    -0.03       0.00     0.00
 37  11.9865      0.00     0.06       0.00    -0.01
 38  12.1231      0.00    -0.03       0.00    -0.04
 39  12.1232      0.00     0.06       0.00     0.04
 40  12.2161      0.00     0.07       0.00     0.03
 41  12.8492      0.00     0.07       0.00     0.05
 42  12.8631      0.00     0.03       0.00     0.03
 43  13.0924      0.00     0.03       0.00     0.07
 44  13.0925      0.00     0.13       0.00     0.06

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.

04VU131    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        46.014    46.014    46.014
ecceobj         0.106     0.106     0.106
incobj          0.764     0.764     0.764
qmin           40.237    40.237    40.237
qmax           51.251    51.251    51.251
amean          45.616    45.616    45.616
amin           45.245    45.246    45.246
amax           46.029    46.028    46.029
emean           0.101     0.101     0.101
emin            0.087     0.087     0.087
emax            0.114     0.114     0.114
imean           2.181     2.181     2.181
imin            1.637     1.637     1.637
imax            2.613     2.613     2.613
excite_mean     0.108     0.108     0.108
fracstop        1.000     1.000     1.000
cjmean          3.107     3.107     3.107

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       197.6     197.6     197.6
kozaiamp        180.0     180.0     180.0