Orbit Fit and Astrometric record for 11UT412

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: 11UT412   
# Created Thu Oct 19 01:37:58 2017
# Orbit generated from Bernstein formalism
# Fitting   15 observations of   15
# Arc:   1.44y
# First observation: 2011/08/30
#  Last observation: 2013/02/06
Preliminary a, adot, b, bdot, g, gdot:
  -0.000158   0.019471  -0.000015  -0.006032   0.021826   0.000000
# Chi-squared of fit:     8.26 DOF:   24 RMS:  0.13
# Min/Max residuals:    -0.23    0.27
# Exact a, adot, b, bdot, g, gdot:
  1.361001E-05  1.938127E-02 -4.397590E-06 -6.130611E-03  2.194620E-02  4.035276E-03
# Covariance matrix:
  4.5370E-13  5.1943E-14  2.1098E-14 -2.1426E-13  5.2595E-13  2.7410E-11
  5.1943E-14  8.6980E-13  3.4530E-14 -3.1522E-13  5.5162E-13  3.9403E-11
  2.1098E-14  3.4530E-14  1.8334E-13 -2.3650E-13  4.7964E-14  3.8757E-12
 -2.1426E-13 -3.1522E-13 -2.3650E-13  7.9596E-13 -4.6915E-13 -3.5110E-11
  5.2595E-13  5.5162E-13  4.7964E-14 -4.6915E-13  1.0392E-12  5.9551E-11
  2.7410E-11  3.9403E-11  3.8757E-12 -3.5110E-11  5.9551E-11  4.3808E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
    3.897576   33.278512    0.842016    0.037474   -0.550478  2455804.012666
# Heliocentric elements and errors
Epoch:              2455800.5000  =  2011/08/27
Mean Anomaly:           65.06129 +/-     0.222
Argument of Peri:       81.60231 +/-     0.065
Long of Asc Node:      224.34291 +/-     0.001
Inclination:            17.77947 +/-     0.002
Eccentricity:         0.18337525 +/-    0.0033
Semi-Major Axis:     48.38968042 +/-    0.0613
Time of Perihelion: 2433580.3122 +/-      63.0
Perihelion:          39.51621091 +/-    0.1660
Aphelion:            57.26314992 +/-    0.1741
Period (y)              336.6180 +/-      0.64
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           38.93231871 +/-    0.0018
Ecliptic Y           24.54469895 +/-    0.0011
Ecliptic Z            3.09708254 +/-    0.0001
Ecliptic XDOT        -0.00086652 +/-    0.0000
Ecliptic YDOT         0.00233088 +/-    0.0000
Ecliptic ZDOT        -0.00072876 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   46.12764472 +/-    0.0016
Geocenter to KBO     45.56597841 +/-    0.0021
# Hcoef:  7.89

The following table shows the complete astrometric record for 11UT412. 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 (11UT412) followed by the observatory code and reference code for the source of the astrometry.

2011 08  30.51190  01 58 41.503  +16 16 03.23  24.2r 11UT412   568  C~1CKy      
2011 08  30.60488  01 58 41.284  +16 16 02.24  24.4r 11UT412   568  C~1CKy      
2011 09  05.60600  01 58 27.215  +16 14 52.10  24.4r 11UT412   568  C~1CKy      
2011 10  25.40962  01 55 21.938  +15 57 11.68  24.2r 11UT412   568  C~1CKy      
2011 10  26.31377  01 55 18.022  +15 56 47.30  24.4r 11UT412   568  C~1CKy      
2011 10  26.35693  01 55 17.824  +15 56 46.18  24.1r 11UT412   568  C~1CKy      
2011 10  26.41449  01 55 17.567  +15 56 44.46        11UT412   568  C~1CKy      
2011 10  31.40568  01 54 56.062  +15 54 28.41        11UT412   568  C~1CKy      
2011 11  24.29202  01 53 20.326  +15 43 41.76  24.3r 11UT412   568  C~1CKy      
2011 11  30.33399  01 52 59.627  +15 41 08.35  24.4r 11UT412   568  C~1CKy      
2012 01  27.24139  01 51 54.785  +15 27 06.49  24.6r 11UT412   568  C~1CKy      
2012 08  22.45359  02 03 44.858  +16 20 14.63  24.5r 11UT412   568  C~1CKy      
2012 08  23.52913  02 03 43.211  +16 20 07.06        11UT412   568  C~1CKy      
2012 08  24.56487  02 03 41.521  +16 19 59.15  24.8r 11UT412   568  C~1CKy      
2013 02  06.29902  01 56 59.022  +15 31 03.57        11UT412   568  C~1CKy      

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     0.07       0.00    -0.00
  2   0.0003     -3.30    -0.12       0.16     0.04
  3   0.0167   -217.65    -0.16       4.58     0.12
  4   0.1530  -3090.18     0.21     -58.98    -0.10
  5   0.1555  -3151.64     0.11     -62.04     0.00
  6   0.1556  -3154.70     0.01     -62.09     0.08
  7   0.1558  -3158.78    -0.09     -62.40    -0.05
  8   0.1695  -3497.07     0.23     -81.11    -0.16
  9   0.2349  -5018.52    -0.04    -200.78     0.26
 10   0.2514  -5352.52    -0.23    -238.95    -0.03
 11   0.4099  -6527.52     0.02    -695.59    -0.02
 12   0.9800   4188.59     0.03   -1264.33    -0.21
 13   0.9829   4163.71     0.13   -1263.37    -0.13
 14   0.9858   4138.13    -0.12   -1262.52    -0.06
 15   1.4395  -2324.36    -0.03   -2018.10     0.27

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.

11UT412    quality flag:2

Type:       SCATNEAR  SCATNEAR      2:1E

axisobj        48.494    48.678    48.320
ecceobj         0.185     0.194     0.175
incobj         17.766    17.765    17.766
qmin           38.519    38.480    37.862
qmax           58.117    58.703    58.395
amean          48.106    48.296    47.796
amin           47.604    47.828    47.235
amax           48.620    48.800    48.438
emean           0.176     0.186     0.175
emin            0.157     0.170     0.135
emax            0.197     0.203     0.206
imean          18.992    18.943    18.556
imin           18.487    18.492    17.844
imax           19.408    19.337    19.413
excite_mean     0.370     0.374     0.363
fracstop        1.000     1.000     1.000
cjmean          2.978     2.977     2.981

libcent 0      -180.0    -180.0     179.7
libamp  0      -180.0    -180.0     156.9
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       184.9     176.8     162.8
kozaiamp        180.0     180.0     179.9