Orbit Fit and Astrometric record for 11UK412

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: 11UK412   
# Created Mon Dec  6 02:11:16 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     35 observations of     35
# Arc:  11.06y
# First observation: 2008/10/02
#  Last observation: 2019/10/26
# Chi-squared of fit:    15.43 DOF:     64 RMS:  0.12
# Min/Max residuals:    -0.29    0.25
# Exact a, adot, b, bdot, g, gdot:
  1.584312E-05  2.693838E-02 -6.014313E-06 -1.287779E-02  2.769697E-02  6.966405E-04
# Covariance matrix:
  3.9603E-13 -1.4731E-13 -1.2765E-13  6.0350E-14 -2.0926E-14 -3.6896E-13
 -1.4731E-13  6.6320E-14  6.2281E-14 -2.9256E-14  2.7004E-14  1.7878E-13
 -1.2765E-13  6.2281E-14  1.9980E-13 -5.4996E-14  2.8684E-14  1.8608E-13
  6.0350E-14 -2.9256E-14 -5.4996E-14  2.0811E-14 -1.2020E-14 -8.7496E-14
 -2.0926E-14  2.7004E-14  2.8684E-14 -1.2020E-14  1.4218E-13  7.2770E-14
 -3.6896E-13  1.7878E-13  1.8608E-13 -8.7496E-14  7.2770E-14  5.3471E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    7.145836   25.074810    0.264201    0.120011   -0.956995  2454741.926832
# Heliocentric elements and errors
Epoch:              2454742.5000  =  2008/10/03
Mean Anomaly:           11.30085 +/-     0.013
Argument of Peri:      150.49756 +/-     0.015
Long of Asc Node:      218.90359 +/-     0.000
Inclination:            26.38279 +/-     0.000
Eccentricity:         0.09387001 +/-    0.0000
Semi-Major Axis:     40.80257710 +/-    0.0024
Time of Perihelion: 2451754.1034 +/-       3.3
Perihelion:          36.97243873 +/-    0.0029
Aphelion:            44.63271547 +/-    0.0032
Period (y)              260.6391 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           33.43525035 +/-    0.0004
Ecliptic Y           15.34774160 +/-    0.0002
Ecliptic Z            4.49108711 +/-    0.0001
Ecliptic XDOT        -0.00091714 +/-    0.0000
Ecliptic YDOT         0.00251012 +/-    0.0000
Ecliptic ZDOT        -0.00125464 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.06262371 +/-    0.0004
Geocenter to KBO     36.10504822 +/-    0.0005
# Hcoef:  7.84

The following table shows the complete astrometric record for 11UK412. 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 (11UK412) followed by the observatory code and reference code for the source of the astrometry.

2008 10  02.426078 01 22 04.17   +16 20 37.5         11UK412   645  C~1Q4E      
2008 10  02.426908 01 22 04.16   +16 20 37.5         11UK412   645  C~1Q4E      
2008 10  02.429395 01 22 04.15   +16 20 37.4         11UK412   645  C~1Q4E      
2011 08  30.49881  01 45 35.764  +16 11 55.46  23.5r 11UK412   568  C~1C6Q      
2011 08  30.54538  01 45 35.627  +16 11 54.51  23.6r 11UK412   568  C~1C6Q      
2011 08  30.59180  01 45 35.495  +16 11 53.81  23.6r 11UK412   568  C~1C6Q      
2011 10  25.33804  01 41 28.461  +15 45 06.21  23.2r 11UK412   568  C~1C6Q      
2011 10  25.38684  01 41 28.202  +15 45 04.42  23.5r 11UK412   568  C~1C6Q      
2011 10  25.43648  01 41 27.934  +15 45 02.61  23.7r 11UK412   568  C~1C6Q      
2011 10  25.44205  01 41 27.902  +15 45 02.32  23.4r 11UK412   568  C~1C6Q      
2011 10  25.44723  01 41 27.876  +15 45 02.16        11UK412   568  C~1C6Q      
2011 10  25.45234  01 41 27.846  +15 45 01.93  23.4r 11UK412   568  C~1C6Q      
2011 10  25.45781  01 41 27.822  +15 45 01.82  23.4r 11UK412   568  C~1C6Q      
2011 10  26.28698  01 41 23.542  +15 44 30.82  23.4r 11UK412   568  C~1C6Q      
2011 10  26.33962  01 41 23.266  +15 44 28.82  23.5r 11UK412   568  C~1C6Q      
2011 10  26.38266  01 41 23.026  +15 44 27.26  23.4r 11UK412   568  C~1C6Q      
2011 10  26.39884  01 41 22.944  +15 44 26.68  23.3r 11UK412   568  C~1C6Q      
2011 10  26.40555  01 41 22.906  +15 44 26.29  23.5r 11UK412   568  C~1C6Q      
2011 11  26.45630  01 38 57.133  +15 25 11.56  23.7r 11UK412   568  C~1C6Q      
2012 01  25.29229  01 37 48.504  +15 03 35.37  23.7r 11UK412   568  C~1C6Q      
2012 01  26.27710  01 37 50.508  +15 03 30.97  23.9r 11UK412   568  C~1C6Q      
2012 01  27.21101  01 37 52.512  +15 03 27.61  23.3r 11UK412   568  C~1C6Q      
2012 01  27.26158  01 37 52.611  +15 03 27.25  23.6r 11UK412   568  C~1C6Q      
2012 02  24.21899  01 39 32.021  +15 05 48.37  23.2r 11UK412   568  C~1C6Q      
2012 08  17.58141  01 53 00.818  +16 05 05.91  23.8r 11UK412   568  C~1C6Q      
2012 08  17.59430  01 53 00.813  +16 05 05.74  23.7r 11UK412   568  C~1C6Q      
2012 08  17.60362  01 53 00.780  +16 05 05.68  23.7r 11UK412   568  C~1C6Q      
2012 08  22.44017  01 52 52.426  +16 04 15.17  23.4r 11UK412   568  C~1C6Q      
2012 08  24.53923  01 52 48.096  +16 03 49.14  23.5r 11UK412   568  C~1C6Q      
2012 10  17.38671  01 49 09.980  +15 40 31.56  23.4r 11UK412   568  C~1C6Q      
2012 10  20.48174  01 48 53.829  +15 38 40.49  23.4r 11UK412   568  C~1C6Q      
2013 02  09.23077  01 45 19.568  +14 55 23.23  23.3r 11UK412   568  C~1C6Q      
2019 10  26.387730 02 37 03.38   +14 10 18.9   23.2G 11UK412   705  C~3chz      
2019 10  26.417970 02 37 03.21   +14 10 18.0   22.9G 11UK412   705  C~3chz      
2019 10  26.465630 02 37 02.99   +14 10 16.3   23.4G 11UK412   705  C~3chz      

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    -0.29
     2   0.0000      0.00    -0.07       0.00    -0.26
     3   0.0000      0.00    -0.03       0.00    -0.28
     4   2.9078      0.00     0.04       0.00     0.22
     5   2.9079      0.00    -0.01       0.00     0.01
     6   2.9081      0.00     0.02       0.00     0.06
     7   3.0607      0.00     0.06       0.00    -0.03
     8   3.0608      0.00     0.05       0.00    -0.01
     9   3.0609      0.00    -0.03       0.00     0.04
    10   3.0610      0.00    -0.07       0.00    -0.04
    11   3.0610      0.00    -0.05       0.00    -0.01
    12   3.0610      0.00    -0.09       0.00    -0.04
    13   3.0610      0.00    -0.02       0.00     0.05
    14   3.0633      0.00     0.12       0.00     0.11
    15   3.0634      0.00     0.14       0.00     0.07
    16   3.0635      0.00    -0.05       0.00     0.12
    17   3.0636      0.00    -0.00       0.00     0.15
    18   3.0636      0.00    -0.04       0.00     0.01
    19   3.1486      0.00     0.07       0.00    -0.05
    20   3.3124      0.00    -0.17       0.00     0.10
    21   3.3151      0.00    -0.06       0.00     0.01
    22   3.3177      0.00     0.12       0.00     0.17
    23   3.3178      0.00     0.02       0.00    -0.01
    24   3.3944      0.00    -0.10       0.00     0.22
    25   3.8745      0.00     0.02       0.00    -0.04
    26   3.8745      0.00     0.25       0.00    -0.10
    27   3.8745      0.00    -0.02       0.00    -0.07
    28   3.8878      0.00     0.01       0.00    -0.13
    29   3.8935      0.00    -0.02       0.00    -0.14
    30   4.0410      0.00    -0.05       0.00     0.21
    31   4.0494      0.00    -0.13       0.00     0.19
    32   4.3554      0.00    -0.07       0.00     0.02
    33  11.0636      0.00    -0.07       0.00    -0.13
    34  11.0636      0.00    -0.22       0.00    -0.04
    35  11.0638      0.00     0.25       0.00    -0.17

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.

11UK412    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        41.067    41.067    41.067
ecceobj         0.099     0.099     0.099
incobj         26.294    26.294    26.294
qmin           36.229    36.230    36.224
qmax           45.600    45.566    45.607
amean          40.794    40.794    40.794
amin           40.479    40.483    40.478
amax           41.135    41.133    41.133
emean           0.095     0.095     0.095
emin            0.081     0.081     0.081
emax            0.109     0.108     0.109
imean          27.246    27.246    27.246
imin           26.814    26.813    26.814
imax           27.655    27.656    27.656
excite_mean     0.468     0.468     0.468
fracstop        1.000     1.000     1.000
cjmean          2.798     2.798     2.798

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       191.5     191.5     191.5
kozaiamp        180.0     180.0     180.0