Orbit Fit and Astrometric record for 14QU441

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: 14QU441   
# Created Tue Dec  7 02:12:39 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     49 observations of     49
# Arc:   5.19y
# First observation: 2014/08/18
#  Last observation: 2019/10/26
# Chi-squared of fit:    40.76 DOF:     92 RMS:  0.16
# Min/Max residuals:    -0.37    0.39
# Exact a, adot, b, bdot, g, gdot:
  1.798619E-05  2.942709E-02  7.146047E-07  1.220303E-03  2.722466E-02 -3.035799E-04
# Covariance matrix:
  8.8086E-14 -4.4778E-14  2.6929E-15 -4.2622E-16  1.9119E-14 -2.8827E-13
 -4.4778E-14  1.7460E-13  1.2790E-14  3.4189E-15  1.5809E-13  1.2114E-12
  2.6929E-15  1.2790E-14  6.4258E-14 -2.1540E-14  2.1039E-14  7.3650E-14
 -4.2622E-16  3.4189E-15 -2.1540E-14  1.4517E-14  3.4934E-15  2.5535E-14
  1.9119E-14  1.5809E-13  2.1039E-14  3.4934E-15  2.3372E-13  9.8268E-13
 -2.8827E-13  1.2114E-12  7.3650E-14  2.5535E-14  9.8268E-13  9.7483E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
  -19.477174   30.357719    0.922137   -0.141303   -0.399898  2456887.771530
# Heliocentric elements and errors
Epoch:              2456888.5000  =  2014/08/19
Mean Anomaly:          341.99614 +/-     0.046
Argument of Peri:      297.60115 +/-     0.058
Long of Asc Node:      113.27530 +/-     0.001
Inclination:            19.33828 +/-     0.000
Eccentricity:         0.10683580 +/-    0.0001
Semi-Major Axis:     41.28342026 +/-    0.0025
Time of Perihelion: 2461733.8502 +/-      14.9
Perihelion:          36.87287302 +/-    0.0033
Aphelion:            45.69396751 +/-    0.0037
Period (y)              265.2600 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           30.71073559 +/-    0.0005
Ecliptic Y           16.92234865 +/-    0.0003
Ecliptic Z          -12.24737459 +/-    0.0002
Ecliptic XDOT        -0.00149006 +/-    0.0000
Ecliptic YDOT         0.00255543 +/-    0.0000
Ecliptic ZDOT         0.00012600 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.14182366 +/-    0.0005
Geocenter to KBO     36.73143222 +/-    0.0007
# Hcoef:  7.87

The following table shows the complete astrometric record for 14QU441. 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 (14QU441) followed by the observatory code and reference code for the source of the astrometry.

2014 08  18.270752 02 20 01.87   -06 41 00.9   23.7r 14QU441   W84  C~1bR3      
2014 08  18.273102 02 20 01.86   -06 41 00.8   23.2i 14QU441   W84  C~1bR3      
2014 08  18.276910 02 20 01.87   -06 41 01.1   23.9z 14QU441   W84  C~1bR3      
2014 08  22.409641 02 19 57.41   -06 43 27.0   23.6r 14QU441   W84  C~1bR3      
2014 08  22.412002 02 19 57.41   -06 43 27.2   24.0i 14QU441   W84  C~1bR3      
2014 08  22.414664 02 19 57.39   -06 43 27.2   23.5z 14QU441   W84  C~1bR3      
2014 09  04.226204 02 19 33.24   -06 51 26.6   24.3i 14QU441   W84  C~1bR3      
2014 09  04.230000 02 19 33.23   -06 51 26.6   22.6z 14QU441   W84  C~1bR3      
2014 09  25.27305  02 18 23.371  -07 04 59.49  24.2g 14QU441   W84  C~4yTx      
2014 09  25.275868 02 18 23.36   -07 04 59.4   23.1i 14QU441   W84  C~1hWA      
2014 09  25.27588  02 18 23.363  -07 04 59.57  22.9i 14QU441   W84  C~4yTx      
2014 10  03.366759 02 17 48.40   -07 09 57.4   23.2r 14QU441   W84  C~1hWA      
2014 10  03.36677  02 17 48.412  -07 09 57.64  23.1r 14QU441   W84  C~4yTx      
2014 10  29.29861  02 15 39.225  -07 23 08.96  23.3i 14QU441   W84  C~4yTx      
2015 08  19.332720 02 26 17.24   -06 02 30.4   23.3r 14QU441   W84  C~1bR3      
2015 08  19.335069 02 26 17.24   -06 02 30.1   24.7i 14QU441   W84  C~1bR3      
2015 08  19.338877 02 26 17.22   -06 02 30.3   22.9z 14QU441   W84  C~1bR3      
2015 08  31.387153 02 26 00.51   -06 09 41.5   23.7z 14QU441   W84  C~1hWA      
2015 09  13.301644 02 25 27.75   -06 17 52.1   23.6r 14QU441   W84  C~1bR3      
2015 09  13.304005 02 25 27.74   -06 17 52.2   23.7i 14QU441   W84  C~1bR3      
2015 09  13.307824 02 25 27.73   -06 17 52.6   22.9z 14QU441   W84  C~1bR3      
2015 10  04.142442 02 24 07.61   -06 30 53.3   23.3r 14QU441   W84  C~1hWA      
2015 10  09.197141 02 23 44.26   -06 33 49.1   23.1i 14QU441   W84  C~1bR3      
2015 10  09.200926 02 23 44.23   -06 33 49.5   23.4z 14QU441   W84  C~1bR3      
2015 10  16.280978 02 23 09.69   -06 37 40.2   24.6g 14QU441   W84  C~1bR3      
2015 10  16.283194 02 23 09.68   -06 37 40.4   23.5r 14QU441   W84  C~1bR3      
2015 10  16.285544 02 23 09.66   -06 37 40.5   23.2i 14QU441   W84  C~1bR3      
2015 10  16.289340 02 23 09.65   -06 37 40.6   23.3z 14QU441   W84  C~1bR3      
2015 10  20.195139 02 22 49.93   -06 39 38.9   24.7r 14QU441   W84  C~1hWA      
2015 11  13.151690 02 20 45.82   -06 48 36.1   23.4r 14QU441   W84  C~1hWA      
2015 11  13.158044 02 20 45.77   -06 48 36.2   23.1z 14QU441   W84  C~1hWA      
2015 11  30.096753 02 19 25.16   -06 50 55.8   24.2g 14QU441   W84  C~1hWA      
2015 11  30.098958 02 19 25.15   -06 50 55.8   22.9r 14QU441   W84  C~1hWA      
2015 11  30.101308 02 19 25.13   -06 50 55.8   23.2i 14QU441   W84  C~1hWA      
2016 09  08.40671  02 31 58.140  -05 35 40.25  23.3i 14QU441   W84  C~4yTx      
2016 09  25.23531  02 31 02.644  -05 46 14.62  24.3g 14QU441   W84  C~4yTx      
2016 10  22.20611  02 28 57.520  -06 01 15.64  23.0i 14QU441   W84  C~4yTx      
2016 11  27.10858  02 25 55.214  -06 11 27.91  22.9i 14QU441   W84  C~4yTx      
2016 12  31.11310  02 23 59.265  -06 06 17.00  23.8r 14QU441   W84  C~4yTx      
2016 12  31.11447  02 23 59.249  -06 06 17.20  23.6g 14QU441   W84  C~4yTx      
2017 11  27.16583  02 32 15.956  -05 31 41.99  23.3i 14QU441   W84  C~4yTx      
2017 11  29.16757  02 32 06.680  -05 31 51.02  22.4z 14QU441   W84  C~4yTx      
2017 12  15.07168  02 31 01.405  -05 31 09.91  23.5r 14QU441   W84  C~4yTx      
2018 01  05.07103  02 30 05.760  -05 25 16.22  24.2g 14QU441   W84  C~4yTx      
2018 11  26.13778  02 38 41.960  -04 51 27.55  23.2i 14QU441   W84  C~4yTx      
2018 11  29.21369  02 38 27.319  -04 51 45.20  23.7r 14QU441   W84  C~4yTx      
2018 12  01.17266  02 38 18.226  -04 51 52.65  24.5g 14QU441   W84  C~4yTx      
2019 10  26.427770 02 47 42.879  -04 01 48.41  23.7G 14QU441   G37  C~3cnK      
2019 10  26.460490 02 47 42.708  -04 01 49.23        14QU441   G37  C~3cnK      

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    -0.17       0.00    -0.06
     2   0.0000      0.00    -0.29       0.00     0.12
     3   0.0000      0.00    -0.09       0.00    -0.05
     4   0.0113      0.00    -0.03       0.00     0.20
     5   0.0113      0.00     0.02       0.00     0.08
     6   0.0113      0.00    -0.23       0.00     0.18
     7   0.0464      0.00     0.05       0.00    -0.12
     8   0.0464      0.00     0.05       0.00     0.02
     9   0.1040      0.00     0.22       0.00    -0.23
    10   0.1041      0.00     0.23       0.00    -0.03
    11   0.1041      0.00     0.28       0.00    -0.20
    12   0.1262      0.00     0.21       0.00     0.13
    13   0.1262      0.00     0.39       0.00    -0.11
    14   0.1972      0.00     0.26       0.00    -0.14
    15   1.0022      0.00    -0.02       0.00    -0.21
    16   1.0022      0.00     0.01       0.00     0.17
    17   1.0022      0.00    -0.24       0.00     0.10
    18   1.0352      0.00     0.03       0.00     0.04
    19   1.0706      0.00     0.22       0.00    -0.01
    20   1.0706      0.00     0.18       0.00    -0.02
    21   1.0706      0.00     0.22       0.00    -0.28
    22   1.1276      0.00    -0.14       0.00     0.08
    23   1.1415      0.00    -0.03       0.00     0.19
    24   1.1415      0.00    -0.20       0.00    -0.08
    25   1.1609      0.00    -0.27       0.00     0.20
    26   1.1609      0.00    -0.25       0.00     0.07
    27   1.1609      0.00    -0.37       0.00     0.05
    28   1.1609      0.00    -0.23       0.00     0.06
    29   1.1716      0.00    -0.11       0.00    -0.06
    30   1.2372      0.00     0.04       0.00     0.20
    31   1.2372      0.00    -0.22       0.00     0.20
    32   1.2836      0.00    -0.09       0.00     0.01
    33   1.2836      0.00    -0.09       0.00     0.01
    34   1.2836      0.00    -0.24       0.00     0.02
    35   2.0592      0.00     0.16       0.00     0.20
    36   2.1053      0.00     0.14       0.00    -0.22
    37   2.1792      0.00     0.37       0.00     0.03
    38   2.2774      0.00     0.14       0.00    -0.06
    39   2.3705      0.00     0.12       0.00    -0.13
    40   2.3706      0.00    -0.08       0.00    -0.36
    41   3.2769      0.00     0.09       0.00     0.17
    42   3.2824      0.00     0.08       0.00    -0.07
    43   3.3259      0.00    -0.00       0.00     0.07
    44   3.3834      0.00     0.17       0.00    -0.11
    45   4.2734      0.00     0.06       0.00     0.03
    46   4.2818      0.00     0.08       0.00    -0.00
    47   4.2872      0.00    -0.00       0.00     0.05
    48   5.1887      0.00    -0.11       0.00    -0.03
    49   5.1887      0.00    -0.11       0.00     0.03

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.

14QU441    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        41.620    41.620    41.620
ecceobj         0.112     0.112     0.112
incobj         19.341    19.341    19.341
qmin           35.858    35.836    35.858
qmax           46.997    47.049    47.028
amean          41.296    41.294    41.296
amin           40.950    40.960    40.943
amax           41.661    41.660    41.659
emean           0.108     0.108     0.108
emin            0.090     0.089     0.090
emax            0.129     0.130     0.129
imean          17.798    17.799    17.795
imin           16.933    16.933    16.932
imax           18.605    18.600    18.602
excite_mean     0.324     0.324     0.324
fracstop        1.000     1.000     1.000
cjmean          2.946     2.946     2.946

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       178.9     178.9     178.9
kozaiamp        180.0     180.0     179.9