Orbit Fit and Astrometric record for 11UF411

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: 11UF411   
# Created Tue Nov 30 02:11:18 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     39 observations of     39
# Arc:   9.28y
# First observation: 2011/08/30
#  Last observation: 2020/12/09
# Chi-squared of fit:    23.16 DOF:     72 RMS:  0.14
# Min/Max residuals:    -0.48    0.30
# Exact a, adot, b, bdot, g, gdot:
  1.635722E-05  2.995170E-02 -1.184245E-06 -1.915705E-03  2.726684E-02 -7.846903E-03
# Covariance matrix:
  1.7840E-13 -7.9349E-14 -3.9240E-15  5.6360E-15  1.3362E-13 -3.0160E-13
 -7.9349E-14  2.9295E-13  5.7419E-15 -2.0331E-14  2.4611E-14  1.1023E-12
 -3.9240E-15  5.7419E-15  4.5136E-14 -6.7995E-15 -2.5154E-15  2.2440E-14
  5.6360E-15 -2.0331E-14 -6.7995E-15  6.0934E-15 -1.1391E-15 -7.7831E-14
  1.3362E-13  2.4611E-14 -2.5154E-15 -1.1391E-15  1.7222E-13  6.6582E-14
 -3.0160E-13  1.1023E-12  2.2440E-14 -7.7831E-14  6.6582E-14  4.2189E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    4.718311   30.880231    0.818325    0.048197   -0.584338  2455803.999576
# Heliocentric elements and errors
Epoch:              2455804.5000  =  2011/08/31
Mean Anomaly:          325.67442 +/-     0.006
Argument of Peri:      194.93617 +/-     0.013
Long of Asc Node:      261.83447 +/-     0.001
Inclination:             5.86640 +/-     0.000
Eccentricity:         0.34985773 +/-    0.0001
Semi-Major Axis:     48.20390730 +/-    0.0041
Time of Perihelion: 2467460.1681 +/-      14.3
Perihelion:          31.33939784 +/-    0.0040
Aphelion:            65.06841675 +/-    0.0063
Period (y)              334.6814 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           32.29560014 +/-    0.0005
Ecliptic Y           18.35909082 +/-    0.0003
Ecliptic Z            3.01672206 +/-    0.0000
Ecliptic XDOT        -0.00220705 +/-    0.0000
Ecliptic YDOT         0.00219161 +/-    0.0000
Ecliptic ZDOT        -0.00025645 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.27165204 +/-    0.0004
Geocenter to KBO     36.67477162 +/-    0.0006
# Hcoef:  8.36

The following table shows the complete astrometric record for 11UF411. 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 (11UF411) followed by the observatory code and reference code for the source of the astrometry.

2011 08  30.49881  01 48 09.738  +16 11 47.88  24.3r 11UF411   568  C~1C6N      
2011 08  30.54538  01 48 09.603  +16 11 47.29  23.8r 11UF411   568  C~1C6N      
2011 08  30.59180  01 48 09.460  +16 11 46.88  23.9r 11UF411   568  C~1C6N      
2011 09  05.59321  01 47 51.522  +16 10 40.68        11UF411   568  C~1C6N      
2011 10  25.33804  01 44 03.067  +15 51 22.66        11UF411   568  C~1C6N      
2011 10  25.33804  01 44 03.03   +15 51 22.9   23.7r 11UF411   568  C~3j8g      
2011 10  25.38684  01 44 02.808  +15 51 21.25  24.1r 11UF411   568  C~1C6N      
2011 10  25.38684  01 44 02.78   +15 51 21.4   24.5r 11UF411   568  C~3j8g      
2011 10  25.43648  01 44 02.541  +15 51 19.76  24.0r 11UF411   568  C~1C6N      
2011 10  25.44205  01 44 02.517  +15 51 19.50  23.6r 11UF411   568  C~1C6N      
2011 10  25.44723  01 44 02.478  +15 51 19.44        11UF411   568  C~1C6N      
2011 10  25.45234  01 44 02.458  +15 51 19.27  24.0r 11UF411   568  C~1C6N      
2011 10  25.45781  01 44 02.422  +15 51 19.03  23.8r 11UF411   568  C~1C6N      
2011 10  25.45781  01 44 02.40   +15 51 19.2   23.6r 11UF411   568  C~3j8g      
2011 10  26.28698  01 43 58.114  +15 50 53.51  24.1r 11UF411   568  C~1C6N      
2011 10  26.33962  01 43 57.839  +15 50 52.04        11UF411   568  C~1C6N      
2011 10  26.33962  01 43 57.81   +15 50 52.2   23.6r 11UF411   568  C~3j8g      
2011 10  26.38266  01 43 57.604  +15 50 50.89        11UF411   568  C~1C6N      
2011 10  26.39884  01 43 57.522  +15 50 50.39  24.0r 11UF411   568  C~1C6N      
2011 10  26.40555  01 43 57.486  +15 50 50.09  24.0r 11UF411   568  C~1C6N      
2011 10  31.28562  01 43 32.171  +15 48 19.43  23.0r 11UF411   568  C~1C6N      
2011 10  31.38837  01 43 31.631  +15 48 16.45  24.1r 11UF411   568  C~1C6N      
2011 10  31.41441  01 43 31.495  +15 48 15.57  23.8r 11UF411   568  C~1C6N      
2011 10  31.44399  01 43 31.339  +15 48 14.52  23.8r 11UF411   568  C~1C6N      
2011 11  24.23661  01 41 38.898  +15 36 08.50  23.9r 11UF411   568  C~1C6N      
2011 11  26.45630  01 41 29.873  +15 35 04.81  24.3r 11UF411   568  C~1C6N      
2012 01  25.29229  01 40 15.192  +15 19 37.78  24.6r 11UF411   568  C~1C6N      
2012 01  26.27710  01 40 17.096  +15 19 39.55  24.6r 11UF411   568  C~1C6N      
2012 02  28.22088  01 42 15.664  +15 26 01.48        11UF411   568  C~1C6N      
2012 08  23.57113  01 55 19.848  +16 42 49.83  24.0r 11UF411   568  C~1C6N      
2012 08  24.45714  01 55 18.037  +16 42 45.49        11UF411   568  C~1C6N      
2012 10  21.33604  01 51 17.973  +16 24 04.60  23.6r 11UF411   568  C~1C6N      
2012 10  21.36172  01 51 17.835  +16 24 03.85  23.7r 11UF411   568  C~1C6N      
2012 10  21.38781  01 51 17.697  +16 24 03.06  24.0r 11UF411   568  C~1C6N      
2013 02  03.29696  01 47 19.719  +15 50 33.48  24.0r 11UF411   568  C~1C6N      
2019 10  26.415970 02 44 04.263  +19 44 40.16  23.5G 11UF411   G37  C~3chz      
2019 10  26.501140 02 44 03.769  +19 44 38.01        11UF411   G37  C~3chz      
2020 12  09.116710 02 48 13.593  +19 50 36.74  24.1G 11UF411   G37  C~4U7j      
2020 12  09.171370 02 48 13.338  +19 50 35.47        11UF411   G37  C~4U7j      

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     0.20       0.00     0.09
     2   0.0001      0.00     0.15       0.00    -0.07
     3   0.0003      0.00    -0.02       0.00    -0.05
     4   0.0167      0.00     0.25       0.00    -0.01
     5   0.1529      0.00    -0.48       0.00     0.17
     6   0.1529      0.00     0.08       0.00    -0.07
     7   0.1530      0.00     0.09       0.00     0.00
     8   0.1530      0.00    -0.33       0.00     0.15
     9   0.1531      0.00     0.05       0.00     0.03
    10   0.1532      0.00     0.13       0.00    -0.06
    11   0.1532      0.00    -0.04       0.00     0.04
    12   0.1532      0.00     0.07       0.00     0.02
    13   0.1532      0.00    -0.36       0.00     0.12
    14   0.1532      0.00    -0.03       0.00    -0.05
    15   0.1555      0.00     0.08       0.00    -0.21
    16   0.1556      0.00    -0.30       0.00     0.08
    17   0.1556      0.00     0.14       0.00    -0.08
    18   0.1557      0.00     0.05       0.00     0.08
    19   0.1558      0.00     0.11       0.00     0.07
    20   0.1558      0.00     0.10       0.00    -0.02
    21   0.1692      0.00    -0.01       0.00    -0.14
    22   0.1694      0.00    -0.03       0.00     0.06
    23   0.1695      0.00    -0.02       0.00    -0.01
    24   0.1696      0.00    -0.04       0.00    -0.14
    25   0.2347      0.00    -0.19       0.00     0.06
    26   0.2408      0.00    -0.13       0.00    -0.01
    27   0.4046      0.00     0.18       0.00    -0.09
    28   0.4073      0.00     0.30       0.00     0.27
    29   0.4975      0.00    -0.15       0.00    -0.14
    30   0.9831      0.00    -0.18       0.00    -0.20
    31   0.9855      0.00     0.05       0.00     0.03
    32   1.1440      0.00    -0.02       0.00     0.00
    33   1.1440      0.00    -0.02       0.00     0.01
    34   1.1441      0.00     0.02       0.00    -0.01
    35   1.4313      0.00     0.09       0.00     0.03
    36   8.1558      0.00     0.09       0.00    -0.12
    37   8.1561      0.00    -0.01       0.00    -0.07
    38   9.2775      0.00    -0.07       0.00     0.03
    39   9.2777      0.00     0.02       0.00     0.16

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.

11UF411    quality flag:3

Type:           2:1E      2:1E      2:1E

axisobj        48.314    48.314    48.314
ecceobj         0.350     0.350     0.350
incobj          5.866     5.866     5.866
qmin           30.562    30.588    30.535
qmax           65.819    65.784    65.923
amean          47.797    47.797    47.797
amin           47.271    47.281    47.270
amax           48.487    48.441    48.487
emean           0.337     0.337     0.338
emin            0.318     0.318     0.318
emax            0.359     0.359     0.360
imean           8.094     8.094     8.068
imin            6.320     6.374     6.250
imax            9.264     9.266     9.264
excite_mean     0.366     0.366     0.366
fracstop        1.000     1.000     1.000
cjmean          2.978     2.978     2.978

libcent 0        70.5      70.1      70.7
libamp  0        21.5      19.4      20.3
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       154.3     156.6     150.7
kozaiamp        180.0     180.0     180.0