Orbit Fit and Astrometric record for 04VF131

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: 04VF131   
# Created Tue Oct 24 01:37:34 2017
# Orbit generated from Bernstein formalism
# Fitting   26 observations of   26
# Arc:   9.85y
# First observation: 1999/10/13
#  Last observation: 2009/08/19
Preliminary a, adot, b, bdot, g, gdot:
   0.000686   0.023832  -0.000018  -0.000292   0.022953   0.000000
# Chi-squared of fit:    65.99 DOF:   46 RMS:  0.28
# Min/Max residuals:    -0.56    0.58
# Exact a, adot, b, bdot, g, gdot:
  1.548879E-05  2.478109E-02  1.501822E-07 -3.049676E-04  2.502492E-02  5.369475E-03
# Covariance matrix:
  4.7868E-13 -1.2838E-13 -1.3435E-15  9.5039E-16 -3.2120E-14 -3.3962E-13
 -1.2838E-13  1.1490E-13  1.9199E-15 -1.3728E-15  2.2543E-13  4.9942E-13
 -1.3435E-15  1.9199E-15  3.6031E-13 -5.0025E-14  4.2107E-15  9.0267E-15
  9.5039E-16 -1.3728E-15 -5.0025E-14  8.3218E-15 -3.0334E-15 -6.4591E-15
 -3.2120E-14  2.2543E-13  4.2107E-15 -3.0334E-15  7.7070E-13  1.1170E-12
 -3.3962E-13  4.9942E-13  9.0267E-15 -6.4591E-15  1.1170E-12  2.3526E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.431236   35.800049    0.275737    0.006938   -0.950821  2451464.880478
# Heliocentric elements and errors
Epoch:              2451460.5000  =  1999/10/09
Mean Anomaly:           59.01241 +/-     0.014
Argument of Peri:       65.82140 +/-     0.024
Long of Asc Node:      246.61595 +/-     0.006
Inclination:             0.81282 +/-     0.000
Eccentricity:         0.21638302 +/-    0.0000
Semi-Major Axis:     44.06603595 +/-    0.0050
Time of Perihelion: 2433946.0998 +/-       2.9
Perihelion:          34.53089417 +/-    0.0044
Aphelion:            53.60117772 +/-    0.0064
Period (y)              292.5258 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           33.34897430 +/-    0.0011
Ecliptic Y           23.70961378 +/-    0.0008
Ecliptic Z            0.30076773 +/-    0.0000
Ecliptic XDOT        -0.00111383 +/-    0.0000
Ecliptic YDOT         0.00255080 +/-    0.0000
Ecliptic ZDOT        -0.00002887 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.91931492 +/-    0.0010
Geocenter to KBO     39.96016737 +/-    0.0014
# Hcoef:  7.05

The following table shows the complete astrometric record for 04VF131. 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 (04VF131) followed by the observatory code and reference code for the source of the astrometry.

1999 10  13.379735 02 13 22.96   +13 51 42.7   22.9V 04VF131   645  C~1ReG      
1999 10  13.380565 02 13 22.96   +13 51 42.6   22.2V 04VF131   645  C~1ReG      
1999 10  13.383052 02 13 22.95   +13 51 42.6   24.6V 04VF131   645  C~1ReG      
2004 11  09.38913  02 38 28.71   +15 48 54.2   23.4g 04VF131   568  C~0WzI      
2004 11  09.41558  02 38 28.58   +15 48 53.4   23.5g 04VF131   568  C~0WzI      
2004 11  09.44156  02 38 28.45   +15 48 52.8   23.1g 04VF131   568  C~0WzI      
2004 11  10.30564  02 38 24.34   +15 48 33.5   23.5g 04VF131   568  C~0WzI      
2005 01  05.23577  02 35 01.29   +15 32 15.8   23.0i 04VF131   568  C~0WzI      
2005 01  05.30975  02 35 01.16   +15 32 15.0   22.9i 04VF131   568  C~0WzI      
2005 01  05.36168  02 35 01.08   +15 32 14.8   23.3i 04VF131   568  C~0WzI      
2005 10  25.51680  02 45 02.86   +16 17 55.4   23.2R 04VF131   568  C~0WzI      
2005 10  25.54911  02 45 02.70   +16 17 54.5   22.9R 04VF131   568  C~0WzI      
2005 10  25.58318  02 45 02.54   +16 17 53.8   23.2R 04VF131   568  C~0WzI      
2005 10  26.55648  02 44 57.92   +16 17 33.0         04VF131   568  C~0WzI      
2006 10  23.28645  02 50 33.13   +16 41 19.4         04VF131   675  C~0WzI      
2006 10  23.33627  02 50 32.90   +16 41 18.5         04VF131   675  C~0WzI      
2006 11  24.28410  02 47 59.47   +16 29 53.8         04VF131   695  C~0WzI      
2006 11  24.40133  02 47 58.92   +16 29 51.3         04VF131   695  C~0WzI      
2007 09  11.50010  02 58 19.92   +17 13 43.9   23.0r 04VF131   695  C~0WzI      
2007 09  12.42865  02 58 17.92   +17 13 35.5   22.9r 04VF131   695  C~0WzI      
2007 09  12.47052  02 58 17.83   +17 13 35.1   23.0r 04VF131   695  C~0WzI      
2007 11  08.22096  02 54 34.34   +16 57 41.8   21.7r 04VF131   695  C~0WzI      
2007 11  08.33871  02 54 33.75   +16 57 39.2   21.7r 04VF131   695  C~0WzI      
2009 08  18.41447  03 09 01.37   +17 55 29.3         04VF131   675  C~0WzI      
2009 08  18.45196  03 09 01.37   +17 55 29.2         04VF131   675  C~0WzI      
2009 08  19.44605  03 09 01.54   +17 55 30.1         04VF131   675  C~0WzI      

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    -0.07
  2   0.0000     -0.03     0.06      -0.09    -0.17
  3   0.0000     -0.17     0.11      -0.05    -0.12
  4   5.0760  23028.40    -0.49    -309.57     0.14
  5   5.0761  23026.34    -0.54    -309.76    -0.05
  6   5.0761  23024.35    -0.56    -309.76    -0.05
  7   5.0785  22961.19     0.53    -310.00     0.02
  8   5.2316  19836.81    -0.08    -337.86    -0.29
  9   5.2318  19834.76    -0.15    -338.04    -0.44
 10   5.2320  19833.58     0.07    -337.87    -0.25
 11   6.0346  29065.69    -0.18    -366.17     0.57
 12   6.0347  29063.17    -0.28    -366.34     0.40
 13   6.0348  29060.72    -0.21    -366.32     0.42
 14   6.0374  28989.65     0.29    -366.33     0.55
 15   7.0278  34135.15     0.45    -426.79    -0.13
 16   7.0279  34131.63     0.58    -426.69    -0.04
 17   7.1154  31763.26     0.41    -434.45     0.19
 18   7.1157  31754.77     0.37    -434.50     0.17
 19   7.9127  41342.89     0.00    -487.88     0.03
 20   7.9153  41311.83     0.10    -487.84    -0.06
 21   7.9154  41310.42     0.18    -487.86    -0.10
 22   8.0707  37844.22    -0.06    -489.55     0.08
 23   8.0711  37835.06    -0.17    -489.62     0.00
 24   9.8481  51331.96    -0.07    -611.28    -0.20
 25   9.8482  51331.94    -0.20    -611.38    -0.32
 26   9.8510  51334.67    -0.22    -611.16    -0.29

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.

04VF131    quality flag:3

Type:         7:4EEE    7:4EEE    7:4EEE

axisobj        44.055    44.069    44.040
ecceobj         0.216     0.216     0.216
incobj          0.812     0.812     0.812
qmin           33.716    33.693    33.667
qmax           54.332    54.391    54.462
amean          43.727    43.727    43.727
amin           43.241    43.245    43.238
amax           44.268    44.273    44.266
emean           0.208     0.209     0.213
emin            0.188     0.190     0.197
emax            0.229     0.230     0.231
imean           4.005     3.797     3.213
imin            2.256     2.250     1.863
imax            5.543     5.309     4.429
excite_mean     0.220     0.220     0.220
fracstop        1.000     1.000     1.000
cjmean          3.039     3.040     3.039

libcent 0       180.2     180.9     179.0
libamp  0        96.4      96.9      97.7
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        92.1      94.9     118.1
kozaiamp         39.3      42.8      94.7