Orbit Fit and Astrometric record for 14QE442

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: 14QE442   
# Created Fri Dec  3 02:12:32 2021
# Orbit generated from Bernstein formalism
# Fitting     53 observations of     54
# Arc:   3.26y
# First observation: 2013/10/27
#  Last observation: 2017/01/29
Preliminary a, adot, b, bdot, g, gdot:
  -0.000021   0.023646   0.000027   0.008480   0.025258   0.000000
# Chi-squared of fit:    29.27 DOF:    100 RMS:  0.13
# Min/Max residuals:    -0.29    0.35
# Exact a, adot, b, bdot, g, gdot:
  1.615368E-05  2.385875E-02  5.703120E-06  8.610220E-03  2.536874E-02  8.714054E-04
# Covariance matrix:
  1.8277E-13 -1.5105E-13  2.5931E-14 -4.5696E-14 -6.2027E-14 -1.3819E-12
 -1.5105E-13  2.5527E-13 -6.0331E-14  1.0885E-13  1.2818E-13  3.2788E-12
  2.5931E-14 -6.0331E-14  1.5457E-13 -7.9434E-14 -3.0433E-14 -8.6856E-13
 -4.5696E-14  1.0885E-13 -7.9434E-14  7.8859E-14  3.8455E-14  1.6621E-12
 -6.2027E-14  1.2818E-13 -3.0433E-14  3.8455E-14  1.6941E-13  1.2405E-12
 -1.3819E-12  3.2788E-12 -8.6856E-13  1.6621E-12  1.2405E-12  4.9590E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -18.193634   37.614212    0.069578   -0.309168   -0.941098  2456592.691988
# Heliocentric elements and errors
Epoch:              2456590.5000  =  2013/10/25
Mean Anomaly:           51.73487 +/-     0.174
Argument of Peri:      260.95677 +/-     0.204
Long of Asc Node:       77.86025 +/-     0.001
Inclination:            26.31524 +/-     0.000
Eccentricity:         0.04134782 +/-    0.0002
Semi-Major Axis:     41.37585328 +/-    0.0026
Time of Perihelion: 2442620.3937 +/-      47.0
Perihelion:          39.66505196 +/-    0.0105
Aphelion:            43.08665460 +/-    0.0105
Period (y)              266.1513 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           30.49016145 +/-    0.0005
Ecliptic Y           23.40845881 +/-    0.0004
Ecliptic Z          -12.30746942 +/-    0.0002
Ecliptic XDOT        -0.00127713 +/-    0.0000
Ecliptic YDOT         0.00226970 +/-    0.0000
Ecliptic ZDOT         0.00085356 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.36185938 +/-    0.0004
Geocenter to KBO     39.41858677 +/-    0.0006
# Hcoef:  7.08

The following table shows the complete astrometric record for 14QE442. 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 (14QE442) followed by the observatory code and reference code for the source of the astrometry.

2013 10  27.19121  02 44 20.892  -03 12 00.15  24.0g 14QE442   W84  C~4yTx      
2013 11  13.18505  02 42 55.822  -03 16 48.48  22.9z 14QE442   W84  C~4yTx      
2013 11  13.18505  02 42 55.82   -03 16 48.5   22.9z 14QE442   W84  C~3cnK      
2013 11  23.24022  02 42 06.86   -03 18 23.6   22.7i 14QE442   W84  C~3cnK      
2013 12  11.18802  02 40 48.747  -03 18 31.90  22.5z 14QE442   W84  C~4yTx      
2013 12  11.18802  02 40 48.75   -03 18 31.9   22.4z 14QE442   W84  C~3cnK      
2014 08  19.41600  02 52 27.363  -01 47 45.72  22.7i 14QE442   W84  C~4yTx      
2014 08  19.41600  02 52 27.36   -01 47 45.7   22.6i 14QE442   W84  C~3cnK      
2014 08  19.42165  02 52 27.367  -01 47 45.92  22.5z 14QE442   W84  C~4yTx      
2014 08  19.42165  02 52 27.37   -01 47 45.9   22.8z 14QE442   W84  C~3cnK      
2014 09  24.31862  02 51 17.590  -02 03 49.89  23.0r 14QE442   W84  C~4yTx      
2014 09  24.31862  02 51 17.59   -02 03 49.9   23.0r 14QE442   W84  C~3cnK      
2014 09  30.28408  02 50 56.131  -02 06 39.42  23.3g 14QE442   W84  C~4yTx      
2014 09  30.28408  02 50 56.12   -02 06 39.3   24.0g 14QE442   W84  C~3cnK      
2015 11  22.16476  02 51 20.889  -01 30 42.66  22.1z 14QE442   W84  C~4yTx      
2015 11  22.16476  02 51 20.89   -01 30 42.6   22.7z 14QE442   W84  C~3cnK      
2015 12  05.19663  02 50 20.388  -01 31 41.96  23.7r 14QE442   W84  C~4yTx      
2015 12  05.19663  02 50 20.39   -01 31 42.0   23.8r 14QE442   W84  C~3cnK      
2015 12  05.19800  02 50 20.393  -01 31 41.96  23.0i 14QE442   W84  C~4yTx      
2015 12  05.19800  02 50 20.39   -01 31 42.0   22.9i 14QE442   W84  C~3cnK      
2015 12  05.19937  02 50 20.378  -01 31 41.87  23.9g 14QE442   W84  C~4yTx      
2015 12  05.19937  02 50 20.38   -01 31 41.9   24.0g 14QE442   W84  C~3cnK      
2016 01  09.097413 02 48 27.64   -01 25 27.3   23.7g 14QE442   W84  C~2Azr      
2016 01  09.099653 02 48 27.65   -01 25 27.0   23.6r 14QE442   W84  C~2Azr      
2016 01  09.102014 02 48 27.64   -01 25 26.9   23.1i 14QE442   W84  C~2Azr      
2016 01  09.105995 02 48 27.62   -01 25 26.8   22.9z 14QE442   W84  C~2Azr      
2016 01  16.099803 02 48 17.06   -01 22 40.7   23.5r 14QE442   W84  C~2Azr      
2016 01  16.102176 02 48 17.06   -01 22 40.8   23.0i 14QE442   W84  C~2Azr      
2016 01  16.106146 02 48 17.06   -01 22 40.8   23.0z 14QE442   W84  C~2Azr      
2016 11  10.25908  02 56 48.261  -00 34 49.26  23.2i 14QE442   W84  C~4yTx      
2016 11  10.26046  02 56 48.262  -00 34 49.32  22.8z 14QE442   W84  C~4yTx      
2016 11  10.26046  02 56 48.26   -00 34 49.3   23.0z 14QE442   W84  C~3cnK      
2016 11  25.19810  02 55 34.267  -00 37 32.72  23.1r 14QE442   W84  C~4yTx      
2016 11  25.19810  02 55 34.27   -00 37 32.8   23.1r 14QE442   W84  C~3cnK      
2016 12  05.19483  02 54 48.175  -00 38 11.25  22.7i 14QE442   W84  C~4yTx      
2016 12  05.19483  02 54 48.17   -00 38 11.2   23.0i 14QE442   W84  C~3cnK      
2016 12  17.088559 02 53 59.72   -00 37 36.3   23.8g 14QE442   W84  C~2Azr      
2016 12  17.090775 02 53 59.70   -00 37 36.4   23.2r 14QE442   W84  C~2Azr      
2016 12  17.093137 02 53 59.70   -00 37 36.3   22.8i 14QE442   W84  C~2Azr      
2016 12  17.097106 02 53 59.68   -00 37 36.3   22.8z 14QE442   W84  C~2Azr      
2016 12  24.057818 02 53 35.51   -00 36 34.4   23.7g 14QE442   W84  C~2Azr      
2016 12  24.060023 02 53 35.50   -00 36 34.5   23.1r 14QE442   W84  C~2Azr      
2016 12  24.062384 02 53 35.49   -00 36 34.4   22.9i 14QE442   W84  C~2Azr      
2016 12  24.065023 02 53 35.50   -00 36 34.4   22.8z 14QE442   W84  C~2Azr      
2016 12  28.140579 02 53 22.99   -00 35 43.9   23.4r 14QE442   W84  C~2Azr      
2016 12  28.142928 02 53 22.99   -00 35 43.9   23.0i 14QE442   W84  C~2Azr      
2016 12  28.149549 02 53 22.98   -00 35 44.0   22.8z 14QE442   W84  C~2Azr      
2017 01  17.065341 02 52 42.35   -00 29 12.0   25.5g 14QE442   W84  C~2Azr      
2017 01  17.067546 02 52 42.35   -00 29 12.1   23.3r 14QE442   W84  C~2Azr      
2017 01  17.076516 02 52 42.33   -00 29 11.9   22.5z 14QE442   W84  C~2Azr      
2017 01  29.068166 02 52 35.77   -00 23 30.8   23.5g 14QE442   W84  C~2Azr      
2017 01  29.070382 02 52 35.79   -00 23 30.9   23.2r 14QE442   W84  C~2Azr      
2017 01  29.072743 02 52 35.77   -00 23 30.8   23.0i 14QE442   W84  C~2Azr      
2017 01  29.079375 02 52 35.77   -00 23 30.7   22.7z 14QE442   W84  C~2Azr      

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    -0.26       0.00    -0.07
     2   0.0465  -1299.97    -0.06     128.23     0.08
     3   0.0465  -1299.94    -0.03     128.24     0.09
     4   0.0741  -2025.82     0.03     269.06     0.07
     5   0.1232  -3138.80     0.12     629.57     0.09
     6   0.1232  -3138.84     0.08     629.59     0.10
     7   0.8110   8519.87    -0.08    2489.88     0.02
     8   0.8110   8519.84    -0.12    2489.91     0.05
     9   0.8110   8519.91     0.03    2489.67    -0.07
    10   0.8110   8519.87    -0.02    2489.67    -0.08
    11   0.9093   7220.10     0.04    1906.22    -0.03
    12   0.9093   7220.10     0.04    1906.23    -0.02
    13   0.9256   6860.73    -0.09    1847.44    -0.06
    14   0.9256   6860.85     0.02    1847.27    -0.23
    15   2.0697   7898.10     0.10    3777.20    -0.29
    16   2.0697   7898.14     0.13    3777.25    -0.24
    17   2.1054   7017.61     0.02    4008.14    -0.13
    18   2.1054   7017.60     0.00    4008.19    -0.08
    19   2.1054   7017.61     0.11    4008.14    -0.16
    20   2.1054   7017.67     0.16    4008.17    -0.13
    21   2.1054   7017.50     0.08    4008.28    -0.04
    22   2.1054   7017.48     0.06    4008.32    -0.00
    23   2.2010   5530.94    -0.13    4898.93     0.11
    24   2.2010   5531.17     0.16    4899.17     0.28
    25   2.2010   5531.06     0.09    4899.31     0.35
    26   2.2010   5530.81 (  -0.08)   4899.50 (   0.42)
    27   2.2201   5433.09     0.02    5107.32     0.31
    28   2.2202   5433.05     0.01    5107.23     0.14
    29   2.2202   5433.05     0.04    5107.23     0.02
    30   3.0392  13636.07    -0.01    5407.34    -0.11
    31   3.0392  13636.07     0.10    5407.28    -0.18
    32   3.0392  13636.05     0.07    5407.31    -0.15
    33   3.0801  12527.04    -0.00    5603.89    -0.27
    34   3.0801  12527.02    -0.02    5603.98    -0.18
    35   3.1075  11856.65     0.09    5786.64    -0.15
    36   3.1075  11856.70     0.15    5786.57    -0.22
    37   3.1400  11176.29    -0.07    6050.17     0.12
    38   3.1400  11175.98    -0.27    6050.17     0.06
    39   3.1400  11176.01    -0.12    6050.27     0.10
    40   3.1401  11175.72    -0.20    6050.36     0.10
    41   3.1591  10850.56    -0.11    6224.10     0.16
    42   3.1591  10850.39    -0.19    6224.05     0.05
    43   3.1591  10850.28    -0.19    6224.19     0.13
    44   3.1591  10850.42     0.06    6224.15     0.02
    45   3.1703  10688.02    -0.15    6331.61     0.14
    46   3.1703  10688.02    -0.06    6331.61     0.08
    47   3.1703  10687.84     0.02    6331.57    -0.15
    48   3.2248  10233.03     0.05    6897.36     0.27
    49   3.2248  10233.00     0.03    6897.26     0.11
    50   3.2249  10232.78    -0.11    6897.55     0.13
    51   3.2577  10247.81     0.07    7253.12     0.13
    52   3.2577  10248.07     0.30    7252.93    -0.12
    53   3.2577  10247.81     0.02    7253.12    -0.00
    54   3.2577  10247.85    -0.01    7253.22    -0.11

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.

14QE442    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        41.602    41.610    41.593
ecceobj         0.047     0.048     0.047
incobj         26.320    26.321    26.320
qmin           39.105    39.086    39.093
qmax           43.680    43.722    43.667
amean          41.309    41.318    41.301
amin           40.998    41.007    40.997
amax           41.639    41.645    41.628
emean           0.039     0.040     0.039
emin            0.029     0.030     0.029
emax            0.050     0.051     0.050
imean          24.795    24.796    24.794
imin           24.409    24.415    24.414
imax           25.189    25.190    25.194
excite_mean     0.421     0.421     0.421
fracstop        1.000     1.000     1.000
cjmean          2.854     2.854     2.854

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       179.5     178.1     180.4
kozaiamp        180.0     179.9     180.0