Orbit Fit and Astrometric record for 14QZ441

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: 14QZ441   
# Created Thu Dec 14 02:38:04 2017
# Orbit generated from Bernstein formalism
# Fitting   22 observations of   22
# Arc:   3.21y
# First observation: 2011/09/04
#  Last observation: 2014/11/18
Preliminary a, adot, b, bdot, g, gdot:
  -0.000211   0.020839  -0.000003   0.001818   0.022366   0.000000
# Chi-squared of fit:    11.44 DOF:   38 RMS:  0.13
# Min/Max residuals:    -0.28    0.38
# Exact a, adot, b, bdot, g, gdot:
  1.414645E-05  2.085258E-02  6.399289E-07  1.817090E-03  2.287324E-02 -1.035491E-03
# Covariance matrix:
  3.3768E-13 -8.2014E-13  2.1340E-14 -6.8724E-14 -6.4202E-13 -1.1481E-11
 -8.2014E-13  1.1057E-11 -3.2511E-13  1.0484E-12  1.0758E-11  1.7414E-10
  2.1340E-14 -3.2511E-13  2.7767E-13 -1.2563E-13 -3.1783E-13 -5.1409E-12
 -6.8724E-14  1.0484E-12 -1.2563E-13  1.4435E-13  1.0252E-12  1.6579E-11
 -6.4202E-13  1.0758E-11 -3.1783E-13  1.0252E-12  1.0713E-11  1.7008E-10
 -1.1481E-11  1.7414E-10 -5.1409E-12  1.6579E-11  1.7008E-10  2.7536E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
    4.275417   15.654548    0.567466    0.061836   -0.827581  2455808.934256
# Heliocentric elements and errors
Epoch:              2455800.5000  =  2011/08/27
Mean Anomaly:          236.13620 +/-     1.190
Argument of Peri:      170.87428 +/-     1.155
Long of Asc Node:      335.16594 +/-     0.003
Inclination:             6.54293 +/-     0.000
Eccentricity:         0.07888297 +/-    0.0018
Semi-Major Axis:     42.51608005 +/-    0.0199
Time of Perihelion: 2490639.8597 +/-     333.9
Perihelion:          39.16228528 +/-    0.0777
Aphelion:            45.86987483 +/-    0.0785
Period (y)              277.2286 +/-      0.19
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           42.93608233 +/-    0.0060
Ecliptic Y           11.44306250 +/-    0.0017
Ecliptic Z            3.25935871 +/-    0.0005
Ecliptic XDOT        -0.00081134 +/-    0.0000
Ecliptic YDOT         0.00237104 +/-    0.0000
Ecliptic ZDOT         0.00020772 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.55417224 +/-    0.0058
Geocenter to KBO     43.71920411 +/-    0.0063
# Hcoef:  5.79

The following table shows the complete astrometric record for 14QZ441. 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 (14QZ441) followed by the observatory code and reference code for the source of the astrometry.

2011 09  04.43349  00 50 59.314  +10 06 14.36  22.7w 14QZ441   F51  C~1vXi      
2011 09  04.44834  00 50 59.253  +10 06 13.88  22.4w 14QZ441   F51  C~1vXi      
2011 09  04.46324  00 50 59.213  +10 06 13.64  22.5w 14QZ441   F51  C~1vXi      
2011 09  04.47825  00 50 59.151  +10 06 13.37  22.6w 14QZ441   F51  C~1vXi      
2012 11  04.25003  00 51 04.615  +10 15 05.88  22.3w 14QZ441   F51  C~1vXi      
2012 11  04.26414  00 51 04.568  +10 15 05.71  22.3w 14QZ441   F51  C~1vXi      
2012 11  04.27822  00 51 04.513  +10 15 05.36  22.3w 14QZ441   F51  C~1vXi      
2012 11  04.29242  00 51 04.452  +10 15 05.01  22.3w 14QZ441   F51  C~1vXi      
2014 06  30.58798  01 05 16.292  +11 46 25.97  22.5w 14QZ441   F51  C~1vXi      
2014 06  30.59192  01 05 16.297  +11 46 25.87  22.3w 14QZ441   F51  C~1vXi      
2014 06  30.59588  01 05 16.296  +11 46 26.03  22.6w 14QZ441   F51  C~1vXi      
2014 06  30.59982  01 05 16.311  +11 46 26.11  22.2w 14QZ441   F51  C~1vXi      
2014 08  28.44831  01 04 24.386  +11 48 15.08  22.7w 14QZ441   F51  C~1vXi      
2014 08  28.47287  01 04 24.317  +11 48 14.66  22.6w 14QZ441   F51  C~1vXi      
2014 08  28.48506  01 04 24.277  +11 48 14.35  22.3w 14QZ441   F51  C~1vXi      
2014 09  29.51918  01 02 22.197  +11 38 06.96  22.3w 14QZ441   F51  C~1vXi      
2014 09  29.53062  01 02 22.144  +11 38 06.73  22.2w 14QZ441   F51  C~1vXi      
2014 09  29.54206  01 02 22.109  +11 38 06.51  22.2w 14QZ441   F51  C~1vXi      
2014 09  29.55351  01 02 22.043  +11 38 06.11  22.1w 14QZ441   F51  C~1vXi      
2014 11  18.25537  00 58 58.265  +11 16 50.06  22.1w 14QZ441   F51  C~1vXi      
2014 11  18.26729  00 58 58.251  +11 16 50.30  22.2w 14QZ441   F51  C~1vXi      
2014 11  18.29121  00 58 58.136  +11 16 49.80  22.2w 14QZ441   F51  C~1vXi      

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     0.06       0.00     0.13
  2   0.0000     -1.02    -0.12      -0.09    -0.04
  3   0.0001     -1.65     0.08      -0.08    -0.10
  4   0.0001     -2.60    -0.02       0.02    -0.06
  5   1.1686    278.87    -0.10     459.21    -0.07
  6   1.1686    278.17     0.08     459.32     0.07
  7   1.1686    277.28     0.07     459.31     0.08
  8   1.1687    276.32    -0.02     459.34     0.13
  9   2.8204  13982.63     0.04     709.38    -0.02
 10   2.8204  13982.66    -0.03     709.26    -0.18
 11   2.8204  13982.71    -0.09     709.42    -0.05
 12   2.8204  13982.94     0.05     709.41    -0.09
 13   2.9816  13315.59     0.00    1099.59    -0.00
 14   2.9816  13314.49     0.07    1099.58    -0.15
 15   2.9817  13313.82    -0.02    1099.52    -0.28
 16   3.0694  11417.63    -0.05    1218.12     0.06
 17   3.0694  11416.82    -0.07    1218.20     0.12
 18   3.0694  11416.26     0.16    1218.19     0.08
 19   3.0695  11415.20    -0.10    1218.19     0.06
 20   3.2055   8151.75    -0.20    1181.95    -0.20
 21   3.2056   8151.65     0.34    1182.25     0.13
 22   3.2056   8149.90    -0.13    1182.44     0.38

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.

14QZ441    quality flag:3

Type:          5:3EE     5:3EE     5:3EE

axisobj        42.569    42.624    42.518
ecceobj         0.078     0.083     0.073
incobj          6.540     6.540     6.540
qmin           37.006    36.255    37.041
qmax           47.941    48.960    48.086
amean          42.329    42.328    42.329
amin           41.919    41.887    41.929
amax           42.756    42.812    42.758
emean           0.096     0.100     0.095
emin            0.066     0.052     0.063
emax            0.124     0.144     0.125
imean           6.791     6.866     6.775
imin            5.532     4.505     5.532
imax            8.143     8.920     8.147
excite_mean     0.153     0.159     0.152
fracstop        1.000     1.000     1.000
cjmean          3.054     3.051     3.055

libcent 0       178.0     183.4     177.8
libamp  0        98.1     171.4     103.2
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       174.7     197.8     176.7
kozaiamp        180.0     164.0     180.0