Orbit Fit and Astrometric record for 06QJ181

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: 06QJ181   
# Created Thu Dec 14 02:37:28 2017
# Orbit generated from Bernstein formalism
# Fitting   25 observations of   25
# Arc:   9.56y
# First observation: 2006/08/21
#  Last observation: 2016/03/13
Preliminary a, adot, b, bdot, g, gdot:
  -0.001335   0.035669   0.000646  -0.012962   0.029440   0.000000
# Chi-squared of fit:    36.96 DOF:   44 RMS:  0.21
# Min/Max residuals:    -0.72    0.42
# Exact a, adot, b, bdot, g, gdot:
  1.813837E-05  3.247504E-02 -5.521184E-06 -1.168160E-02  2.813124E-02 -8.508753E-03
# Covariance matrix:
  1.7154E-13 -3.2551E-14 -1.6332E-14  1.6760E-14  1.1726E-13 -1.3854E-13
 -3.2551E-14  6.4897E-14  1.5361E-14 -2.2378E-14  4.1914E-14  1.8948E-13
 -1.6332E-14  1.5361E-14  8.7793E-14 -2.1415E-14 -6.7440E-15  6.1078E-14
  1.6760E-14 -2.2378E-14 -2.1415E-14  1.6888E-14 -1.1713E-15 -8.2395E-14
  1.1726E-13  4.1914E-14 -6.7440E-15 -1.1713E-15  2.3460E-13  1.5176E-14
 -1.3854E-13  1.8948E-13  6.1078E-14 -8.2395E-14  1.5176E-14  6.9449E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    3.048260   63.021665    1.009056   -0.004241    0.082195  2453968.883464
# Heliocentric elements and errors
Epoch:              2453960.5000  =  2006/08/13
Mean Anomaly:          344.57641 +/-     0.003
Argument of Peri:      219.21559 +/-     0.006
Long of Asc Node:      249.77604 +/-     0.000
Inclination:            20.09952 +/-     0.000
Eccentricity:         0.49300115 +/-    0.0001
Semi-Major Axis:     62.28598067 +/-    0.0086
Time of Perihelion: 2461652.9866 +/-       0.7
Perihelion:          31.57892072 +/-    0.0056
Aphelion:            92.99304061 +/-    0.0133
Period (y)              491.5794 +/-      0.10
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           16.96183380 +/-    0.0003
Ecliptic Y           31.10014703 +/-    0.0005
Ecliptic Z            1.89010159 +/-    0.0000
Ecliptic XDOT        -0.00315985 +/-    0.0000
Ecliptic YDOT         0.00074585 +/-    0.0000
Ecliptic ZDOT        -0.00117937 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.47527921 +/-    0.0005
Geocenter to KBO     35.54766380 +/-    0.0006
# Hcoef:  6.30

The following table shows the complete astrometric record for 06QJ181. 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 (06QJ181) followed by the observatory code and reference code for the source of the astrometry.

2006 08  21.38271  04 01 20.31   +23 45 07.0   21.3R 06QJ181   807  Cs5502      
2006 08  22.36831  04 01 22.07   +23 45 10.5         06QJ181   807  Cs5502      
2006 08  23.35656  04 01 23.74   +23 45 13.7         06QJ181   807  Cs5502      
2006 10  19.36967  03 59 49.15   +23 38 50.2   22.1R 06QJ181   695  Ct0530      
2006 10  19.38242  03 59 49.08   +23 38 50.1         06QJ181   695  Ct0530      
2006 10  19.46362  03 59 48.73   +23 38 49.0         06QJ181   695  Ct0530      
2006 10  19.46731  03 59 48.68   +23 38 48.7         06QJ181   695  Ct0530      
2006 10  20.37568  03 59 44.53   +23 38 33.6         06QJ181   695  Ct0530      
2006 10  20.38728  03 59 44.47   +23 38 33.3         06QJ181   695  Ct0530      
2006 12  21.12996  03 53 58.88   +23 15 15.5   21.8R 06QJ181   695  Ct5545      
2006 12  21.22384  03 53 58.39   +23 15 13.0         06QJ181   695  Ct5545      
2006 12  24.29661  03 53 43.12   +23 13 58.5   22.7R 06QJ181   688  Ct2280      
2006 12  24.37369  03 53 42.70   +23 13 56.6         06QJ181   688  Ct2280      
2007 10  11.42511  04 09 10.79   +23 22 08.9   21.6R 06QJ181   688  C~02IB      
2007 10  11.48574  04 09 10.53   +23 22 08.6         06QJ181   688  C~02IB      
2008 10  22.42941  04 17 17.17   +22 58 18.5   21.7  06QJ181   695  C~02IB      
2008 10  22.47996  04 17 16.91   +22 58 17.5   21.7  06QJ181   695  C~02IB      
2008 10  24.42245  04 17 07.88   +22 57 45.0   21.6  06QJ181   695  C~02IB      
2008 10  24.50821  04 17 07.47   +22 57 43.4   21.4  06QJ181   695  C~02IB      
2008 11  30.28578  04 13 38.78   +22 45 12.8   22.0R 06QJ181   688  C~02Mi      
2008 11  30.34873  04 13 38.37   +22 45 11.2         06QJ181   688  C~02Mi      
2011 01  09.22126  04 28 13.97   +21 44 51.3   21.9R 06QJ181   695  C~0U3z      
2011 01  09.29902  04 28 13.62   +21 44 49.8         06QJ181   695  C~0U3z      
2016 03  13.12742  05 13 02.50   +19 04 08.3   22.1R 06QJ181   G37  C~1pPp      
2016 03  13.22653  05 13 02.68   +19 04 09.1         06QJ181   G37  C~1pPp      

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     0.02       0.00    -0.22
  2   0.0027     24.38    -0.05      -1.33    -0.20
  3   0.0054     47.49     0.16      -2.71    -0.24
  4   0.1615  -1301.97     0.13    -120.82     0.06
  5   0.1615  -1302.93     0.00    -120.73     0.19
  6   0.1618  -1307.87     0.42    -120.84     0.35
  7   0.1618  -1308.60    -0.07    -121.00     0.21
  8   0.1643  -1367.49     0.07    -124.40     0.11
  9   0.1643  -1368.36    -0.02    -124.53     0.01
 10   0.3333  -6311.52    -0.08    -518.83     0.24
 11   0.3336  -6318.65    -0.18    -519.86     0.03
 12   0.3420  -6540.28     0.32    -548.54    -0.13
 13   0.3422  -6546.35    -0.21    -549.18    -0.03
 14   1.1391   6090.13    -0.27   -2585.57    -0.72
 15   1.1392   6086.56    -0.58   -2585.21    -0.12
 16   2.1712  12454.22     0.23   -5186.07     0.27
 17   2.1714  12450.49    -0.12   -5186.45     0.17
 18   2.1767  12321.57     0.06   -5197.18     0.13
 19   2.1769  12315.70     0.09   -5197.79    -0.00
 20   2.2776   9335.68     0.13   -5435.58     0.06
 21   2.2778   9329.80    -0.18   -5436.15    -0.05
 22   4.3856  20807.02     0.09  -11045.92    -0.01
 23   4.3858  20801.92     0.06  -11046.65    -0.17
 24   9.5599  58926.59    -0.03  -25770.21    -0.32
 25   9.5601  58929.42     0.01  -25769.64     0.35

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.

06QJ181    quality flag:3

Type:          3:1EE     3:1EE     3:1EE
Type:          3:1II     3:1II     3:1II

axisobj        63.449    63.474    63.425
ecceobj         0.500     0.500     0.500
incobj         20.018    20.019    20.018
qmin           31.159    31.159    31.158
qmax           95.512    95.688    95.491
amean          62.630    62.630    62.630
amin           61.756    61.753    61.753
amax           63.772    63.865    63.769
emean           0.443     0.450     0.442
emin            0.366     0.385     0.365
emax            0.502     0.503     0.502
imean          25.118    24.683    25.146
imin           21.240    21.240    21.240
imax           29.277    28.322    29.319
excite_mean     0.615     0.615     0.615
fracstop        1.000     1.000     1.000
cjmean          2.817     2.817     2.817

libcent 0        77.3      78.7      76.8
libamp  0        42.8      45.0      42.5
libcent 1       166.0     180.2     166.0
libamp  1        47.5      62.3      46.8
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       228.1     235.5     227.8
kozaiamp          7.6      11.4       7.3