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 Sat Oct 21 01:38:27 2017
# Orbit generated from Bernstein formalism
# Fitting   30 observations of   30
# Arc:   1.28y
# First observation: 2014/08/18
#  Last observation: 2015/11/30
Preliminary a, adot, b, bdot, g, gdot:
  -0.000018   0.029656  -0.000004   0.001210   0.027374   0.000000
# Chi-squared of fit:    18.49 DOF:   54 RMS:  0.14
# Min/Max residuals:    -0.40    0.24
# Exact a, adot, b, bdot, g, gdot:
  1.774212E-05  2.942436E-02  8.115894E-07  1.220453E-03  2.722234E-02 -3.979100E-04
# Covariance matrix:
  2.0683E-13  4.5308E-13  2.8350E-14 -6.8427E-15  5.6622E-13  2.0975E-11
  4.5308E-13  6.5909E-12  3.0995E-13 -7.1014E-14  6.1945E-12  2.2792E-10
  2.8350E-14  3.0995E-13  1.6792E-13 -1.3809E-13  3.0141E-13  1.0896E-11
 -6.8427E-15 -7.1014E-14 -1.3809E-13  1.7749E-13 -5.6737E-14 -3.1311E-12
  5.6622E-13  6.1945E-12  3.0141E-13 -5.6737E-14  6.0370E-12  2.1709E-10
  2.0975E-11  2.2792E-10  1.0896E-11 -3.1311E-12  2.1709E-10  8.2466E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
  -19.477174   30.357719    0.922137   -0.141303   -0.399899  2456887.771530
# Heliocentric elements and errors
Epoch:              2456880.5000  =  2014/08/11
Mean Anomaly:          340.59654 +/-     1.302
Argument of Peri:      299.35045 +/-     1.658
Long of Asc Node:      113.27111 +/-     0.004
Inclination:            19.33842 +/-     0.000
Eccentricity:         0.10813478 +/-    0.0013
Semi-Major Axis:     41.29494979 +/-    0.0135
Time of Perihelion: 2462104.7099 +/-     350.6
Perihelion:          36.82952950 +/-    0.0560
Aphelion:            45.76037007 +/-    0.0567
Period (y)              265.3711 +/-      0.13
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           30.71329171 +/-    0.0027
Ecliptic Y           16.92383547 +/-    0.0016
Ecliptic Z          -12.24841664 +/-    0.0011
Ecliptic XDOT        -0.00149776 +/-    0.0000
Ecliptic YDOT         0.00255089 +/-    0.0000
Ecliptic ZDOT         0.00012918 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.14493512 +/-    0.0024
Geocenter to KBO     36.73454136 +/-    0.0033
# Hcoef:  8.37

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  25.275868 02 18 23.36   -07 04 59.4   23.1i 14QU441   W84  C~1hWA      
2014 10  03.366759 02 17 48.40   -07 09 57.4   23.2r 14QU441   W84  C~1hWA      
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      

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    -0.13       0.00    -0.02
  2   0.0000     -0.11    -0.18       0.15     0.19
  3   0.0000     -0.07    -0.05      -0.19    -0.04
  4   0.0113   -112.84     0.08    -114.14     0.16
  5   0.0113   -112.91     0.09    -114.33     0.04
  6   0.0113   -113.19    -0.11    -114.22     0.21
  7   0.0464   -616.36     0.01    -439.85    -0.19
  8   0.0464   -616.50     0.06    -439.80    -0.05
  9   0.1041  -1873.44     0.12    -843.72    -0.20
 10   0.1262  -2464.69     0.11    -944.16    -0.04
 11   1.0022   6051.63    -0.04     225.06    -0.27
 12   1.0022   6051.73     0.12     225.34     0.08
 13   1.0022   6051.38    -0.13     225.26     0.10
 14   1.0352   5667.24     0.08     -92.23    -0.04
 15   1.0706   5038.06     0.24    -382.12    -0.16
 16   1.0706   5037.88     0.20    -382.16    -0.16
 17   1.0706   5037.60     0.14    -382.48    -0.40
 18   1.1276   3645.72    -0.06    -699.09     0.06
 19   1.1415   3258.24     0.09    -743.04     0.13
 20   1.1415   3257.68    -0.17    -743.26    -0.07
 21   1.1609   2694.81    -0.12    -780.91     0.22
 22   1.1609   2694.60    -0.15    -781.04     0.09
 23   1.1609   2694.28    -0.27    -781.03     0.11
 24   1.1609   2694.11    -0.14    -781.07     0.08
 25   1.1716   2377.45    -0.06    -790.07    -0.08
 26   1.2372    456.92     0.22    -653.49     0.11
 27   1.2372    456.18    -0.03    -653.33     0.20
 28   1.2836   -718.66     0.07    -369.39    -0.04
 29   1.2836   -718.80     0.07    -369.34    -0.03
 30   1.2836   -719.08    -0.06    -369.24     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.

14QU441    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        41.628    41.639    41.618
ecceobj         0.114     0.115     0.113
incobj         19.342    19.342    19.342
qmin           35.900    35.859    35.775
qmax           47.001    47.096    47.064
amean          41.303    41.315    41.295
amin           40.970    40.975    40.957
amax           41.665    41.674    41.659
emean           0.109     0.111     0.109
emin            0.091     0.093     0.090
emax            0.129     0.131     0.131
imean          17.783    17.773    17.799
imin           16.923    16.926    16.924
imax           18.589    18.598    18.607
excite_mean     0.324     0.325     0.325
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       178.4     177.5     179.4
kozaiamp        180.0     180.0     180.0