Orbit Fit and Astrometric record for 11UZ411

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: 11UZ411   
# Created Mon Oct 23 01:37:59 2017
# Orbit generated from Bernstein formalism
# Fitting   22 observations of   22
# Arc:   1.45y
# First observation: 2011/08/29
#  Last observation: 2013/02/09
Preliminary a, adot, b, bdot, g, gdot:
  -0.000126   0.021084   0.000001   0.000098   0.022303   0.000000
# Chi-squared of fit:     7.37 DOF:   38 RMS:  0.10
# Min/Max residuals:    -0.24    0.26
# Exact a, adot, b, bdot, g, gdot:
  1.502336E-05  2.100914E-02 -5.402653E-07  9.769759E-05  2.241986E-02  1.514661E-03
# Covariance matrix:
  3.4301E-13  5.7022E-14 -1.2484E-15  1.9942E-15  3.8558E-13  1.9444E-11
  5.7022E-14  3.8631E-13 -1.1964E-15  1.9369E-15  3.5812E-13  1.7235E-11
 -1.2484E-15 -1.1964E-15  1.4462E-13 -1.2831E-13 -2.3691E-15 -9.6321E-14
  1.9942E-15  1.9369E-15 -1.2831E-13  2.1216E-13  3.7360E-15  1.3173E-13
  3.8558E-13  3.5812E-13 -2.3691E-15  3.7360E-15  7.5315E-13  3.9530E-11
  1.9444E-11  1.7235E-11 -9.6321E-14  1.3173E-13  3.9530E-11  2.7007E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.193539   32.643748    0.845658    0.011353   -0.546535  2455802.990676
# Heliocentric elements and errors
Epoch:              2455800.5000  =  2011/08/27
Mean Anomaly:           71.46900 +/-     0.284
Argument of Peri:      358.59920 +/-     0.540
Long of Asc Node:      315.38485 +/-     0.058
Inclination:             1.21390 +/-     0.000
Eccentricity:         0.05512290 +/-    0.0024
Semi-Major Axis:     45.83560119 +/-    0.0123
Time of Perihelion: 2433298.6603 +/-      89.0
Perihelion:          43.30900997 +/-    0.1123
Aphelion:            48.36219242 +/-    0.1125
Period (y)              310.3220 +/-      0.12
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           38.46946481 +/-    0.0015
Ecliptic Y           23.63848622 +/-    0.0009
Ecliptic Z            0.92907402 +/-    0.0000
Ecliptic XDOT        -0.00123155 +/-    0.0000
Ecliptic YDOT         0.00226534 +/-    0.0000
Ecliptic ZDOT         0.00001584 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   45.16127691 +/-    0.0013
Geocenter to KBO     44.60331319 +/-    0.0017
# Hcoef:  7.87

The following table shows the complete astrometric record for 11UZ411. 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 (11UZ411) followed by the observatory code and reference code for the source of the astrometry.

2011 08  29.48991  02 00 05.666  +13 30 39.34  24.5r 11UZ411   568  C~1C6P      
2011 08  29.54186  02 00 05.569  +13 30 38.70  24.5r 11UZ411   568  C~1C6P      
2011 08  29.58893  02 00 05.447  +13 30 38.43  24.7r 11UZ411   568  C~1C6P      
2011 09  05.52844  01 59 49.191  +13 29 21.57  24.2r 11UZ411   568  C~1C6P      
2011 10  24.40763  01 56 44.789  +13 13 27.33  24.2r 11UZ411   568  C~1C6P      
2011 10  24.45036  01 56 44.593  +13 13 26.49  24.3r 11UZ411   568  C~1C6P      
2011 10  24.49308  01 56 44.407  +13 13 25.48  24.2r 11UZ411   568  C~1C6P      
2011 10  28.48438  01 56 26.773  +13 11 49.98  24.3r 11UZ411   568  C~1C6P      
2011 10  29.31115  01 56 23.146  +13 11 30.05  23.7r 11UZ411   568  C~1C6P      
2011 11  24.29629  01 54 35.922  +13 01 35.50  24.4r 11UZ411   568  C~1C6P      
2011 11  30.32546  01 54 14.680  +12 59 34.02  24.1r 11UZ411   568  C~1C6P      
2012 01  25.28222  01 53 02.746  +12 51 37.68        11UZ411   568  C~1C6P      
2012 01  26.26707  01 53 03.857  +12 51 42.22  24.2r 11UZ411   568  C~1C6P      
2012 08  17.56436  02 05 02.480  +13 56 57.49  24.0r 11UZ411   568  C~1C6P      
2012 08  24.52210  02 04 52.664  +13 56 17.21  24.6r 11UZ411   568  C~1C6P      
2012 10  17.36966  02 01 54.062  +13 41 27.31  24.1r 11UZ411   568  C~1C6P      
2012 10  20.46455  02 01 40.450  +13 40 15.92  24.0r 11UZ411   568  C~1C6P      
2013 01  14.33106  01 57 31.674  +13 16 40.21  24.1r 11UZ411   568  C~1C6P      
2013 02  02.24144  01 57 48.992  +13 17 41.77  24.6r 11UZ411   568  C~1C6P      
2013 02  03.24708  01 57 50.793  +13 17 49.86  24.4r 11UZ411   568  C~1C6P      
2013 02  06.29444  01 57 56.756  +13 18 17.06  24.8r 11UZ411   568  C~1C6P      
2013 02  09.23506  01 58 03.258  +13 18 47.31  24.1r 11UZ411   568  C~1C6P      

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     0.13
  2   0.0001     -1.55     0.12      -0.11    -0.09
  3   0.0003     -3.31    -0.09       0.25     0.19
  4   0.0193   -252.38    -0.03       9.80     0.26
  5   0.1531  -3107.75     0.07      46.27    -0.07
  6   0.1532  -3110.73     0.08      46.48     0.11
  7   0.1533  -3113.63     0.16      46.47     0.09
  8   0.1643  -3388.35    -0.07      46.49    -0.03
  9   0.1665  -3444.96    -0.09      46.24    -0.19
 10   0.2377  -5121.13    -0.02      35.43    -0.02
 11   0.2542  -5454.69    -0.10      30.22    -0.10
 12   0.4074  -6607.58     0.04     -47.31    -0.24
 13   0.4101  -6590.76    -0.02     -48.76    -0.13
 14   0.9694   4604.67    -0.03       3.43    -0.06
 15   0.9885   4456.51    -0.08      14.10     0.01
 16   1.1359   1706.81     0.11      65.50    -0.17
 17   1.1444   1495.96     0.05      66.45    -0.00
 18   1.3794  -2398.70     0.01     -10.59    -0.04
 19   1.4312  -2140.19    -0.08     -40.53     0.07
 20   1.4340  -2112.72     0.02     -42.05     0.10
 21   1.4423  -2021.64     0.01     -46.70     0.12
 22   1.4504  -1922.12    -0.02     -51.21     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.

11UZ411    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        45.934    45.975    45.898
ecceobj         0.056     0.063     0.050
incobj          1.214     1.214     1.214
qmin           42.490    42.230    42.741
qmax           48.915    49.281    48.586
amean          45.599    45.639    45.564
amin           45.242    45.276    45.206
amax           45.970    46.018    45.932
emean           0.052     0.059     0.045
emin            0.039     0.046     0.032
emax            0.064     0.071     0.058
imean           2.745     2.748     2.743
imin            2.312     2.311     2.311
imax            3.113     3.116     3.109
excite_mean     0.071     0.076     0.066
fracstop        1.000     1.000     1.000
cjmean          3.115     3.115     3.115

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       175.9     176.2     175.9
kozaiamp        179.9     179.9     180.0