Orbit Fit and Astrometric record for 11UQ412

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: 11UQ412   
# Created Thu Dec  9 02:11:14 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     24 observations of     24
# Arc:   6.31y
# First observation: 2011/08/29
#  Last observation: 2017/12/20
# Chi-squared of fit:     5.55 DOF:     42 RMS:  0.08
# Min/Max residuals:    -0.17    0.20
# Exact a, adot, b, bdot, g, gdot:
  1.818744E-05  3.418101E-02 -5.479750E-06 -1.017286E-02  2.826609E-02 -4.284094E-03
# Covariance matrix:
  2.0170E-13 -7.9268E-14 -1.2436E-14  2.8351E-14  1.0554E-13 -4.1811E-13
 -7.9268E-14  3.1171E-13  4.3542E-14 -1.0475E-13  9.6751E-14  1.5560E-12
 -1.2436E-14  4.3542E-14  8.9465E-14 -3.7396E-14  1.0041E-14  2.3636E-13
  2.8351E-14 -1.0475E-13 -3.7396E-14  5.8465E-14 -2.5974E-14 -5.6700E-13
  1.0554E-13  9.6751E-14  1.0041E-14 -2.5974E-14  1.7695E-13  3.8938E-13
 -4.1811E-13  1.5560E-12  2.3636E-13 -5.6700E-13  3.8938E-13  8.4197E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.174179   34.160361    0.859434    0.019876   -0.524320  2455803.033246
# Heliocentric elements and errors
Epoch:              2455802.5000  =  2011/08/29
Mean Anomaly:          352.41175 +/-     0.004
Argument of Peri:      197.44157 +/-     0.014
Long of Asc Node:      219.95459 +/-     0.000
Inclination:            16.68165 +/-     0.000
Eccentricity:         0.49022230 +/-    0.0001
Semi-Major Axis:     68.29662119 +/-    0.0085
Time of Perihelion: 2460147.9683 +/-      37.9
Perihelion:          34.81609439 +/-    0.0059
Aphelion:           101.77714800 +/-    0.0133
Period (y)              564.4260 +/-      0.11
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           30.17329521 +/-    0.0004
Ecliptic Y           19.43558696 +/-    0.0003
Ecliptic Z            1.34198279 +/-    0.0000
Ecliptic XDOT        -0.00217437 +/-    0.0000
Ecliptic YDOT         0.00253312 +/-    0.0000
Ecliptic ZDOT        -0.00100031 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.91626255 +/-    0.0004
Geocenter to KBO     35.37819019 +/-    0.0005
# Hcoef:  7.64

The following table shows the complete astrometric record for 11UQ412. 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 (11UQ412) followed by the observatory code and reference code for the source of the astrometry.

2011 08  29.53248  02 04 35.124  +14 57 05.64  23.2r 11UQ412   568  C~1CKy      
2011 08  29.57665  02 04 35.014  +14 57 04.97  23.1r 11UQ412   568  C~1CKy      
2011 08  29.62382  02 04 34.916  +14 57 04.30  23.0r 11UQ412   568  C~1CKy      
2011 09  05.56255  02 04 17.858  +14 55 14.93  23.1r 11UQ412   568  C~1CKy      
2011 10  24.44181  02 00 46.023  +14 32 57.91  23.0r 11UQ412   568  C~1CKy      
2011 10  24.48455  02 00 45.792  +14 32 56.48  23.1r 11UQ412   568  C~1CKy      
2011 10  24.52730  02 00 45.567  +14 32 55.02  23.0r 11UQ412   568  C~1CKy      
2011 10  30.56385  02 00 14.122  +14 29 29.77  23.1r 11UQ412   568  C~1CKy      
2011 10  31.54671  02 00 09.033  +14 28 56.19  23.1r 11UQ412   568  C~1CKy      
2011 11  24.30055  01 58 13.970  +14 15 45.77  23.0r 11UQ412   568  C~1CKy      
2011 11  24.30481  01 58 13.953  +14 15 45.62  23.1r 11UQ412   568  C~1CKy      
2011 11  30.34681  01 57 48.977  +14 12 41.51  23.0r 11UQ412   568  C~1CKy      
2012 01  25.28725  01 56 35.422  +13 57 24.06  23.4r 11UQ412   568  C~1CKy      
2012 01  26.27207  01 56 37.134  +13 57 23.89  23.3r 11UQ412   568  C~1CKy      
2012 08  23.53769  02 13 13.939  +15 04 49.95  23.3r 11UQ412   568  C~1CKy      
2012 08  24.57339  02 13 12.413  +15 04 38.63  23.2r 11UQ412   568  C~1CKy      
2012 10  17.40813  02 09 53.948  +14 43 36.05  22.9r 11UQ412   568  C~1CKy      
2012 10  17.42550  02 09 53.859  +14 43 35.48  22.9r 11UQ412   568  C~1CKy      
2012 10  20.50496  02 09 37.907  +14 41 55.04  23.0r 11UQ412   568  C~1CKy      
2013 01  04.33671  02 04 47.564  +14 07 07.56  23.4r 11UQ412   568  C~1CKy      
2013 01  14.32244  02 04 44.938  +14 05 27.69  23.6r 11UQ412   568  C~1CKy      
2013 02  02.25552  02 05 10.838  +14 05 01.30  23.2r 11UQ412   568  C~1CKy      
2017 12  20.27512  02 48 39.233  +14 31 36.18  22.8R 11UQ412   G37  C~2UwX      
2017 12  20.35179  02 48 38.950  +14 31 34.67        11UQ412   G37  C~2UwX      

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     0.02
     2   0.0001      0.00     0.03       0.00    -0.03
     3   0.0003      0.00     0.14       0.00    -0.04
     4   0.0192      0.00     0.06       0.00     0.07
     5   0.1531      0.00    -0.05       0.00    -0.04
     6   0.1532      0.00    -0.11       0.00    -0.02
     7   0.1533      0.00    -0.09       0.00    -0.03
     8   0.1698      0.00    -0.17       0.00     0.06
     9   0.1725      0.00    -0.06       0.00     0.07
    10   0.2376      0.00     0.01       0.00     0.09
    11   0.2376      0.00     0.04       0.00     0.07
    12   0.2541      0.00    -0.17       0.00    -0.06
    13   0.4073      0.00     0.09       0.00    -0.15
    14   0.4100      0.00     0.07       0.00    -0.13
    15   0.9856      0.00    -0.06       0.00    -0.03
    16   0.9885      0.00    -0.16       0.00     0.01
    17   1.1359      0.00    -0.06       0.00     0.07
    18   1.1359      0.00    -0.03       0.00     0.06
    19   1.1443      0.00    -0.02       0.00     0.01
    20   1.3520      0.00    -0.05       0.00    -0.05
    21   1.3793      0.00     0.11       0.00     0.07
    22   1.4311      0.00     0.13       0.00    -0.07
    23   6.3100      0.00     0.08       0.00    -0.02
    24   6.3103      0.00    -0.05       0.00     0.02

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.

11UQ412    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        68.546    68.546    68.547
ecceobj         0.492     0.492     0.492
incobj         16.669    16.669    16.669
qmin           33.021    33.846    34.092
qmax          102.731   103.428   102.252
amean          66.804    67.467    67.156
amin           65.103    66.142    66.099
amax           68.655    68.985    68.547
emean           0.483     0.482     0.480
emin            0.462     0.462     0.459
emax            0.501     0.499     0.493
imean          16.719    17.306    17.653
imin           15.126    16.281    17.098
imax           18.763    18.474    18.928
excite_mean     0.563     0.566     0.568
fracstop        1.000     1.000     1.000
cjmean          2.948     2.950     2.944

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       202.8     197.6     183.2
kozaiamp        180.0     180.0     180.0