Orbit Fit and Astrometric record for 14QU562

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: 14QU562   
# Created Sat Dec  4 02:12:38 2021
# Orbit generated from Bernstein formalism
# Fitting     16 observations of     16
# Arc:   3.32y
# First observation: 2014/08/19
#  Last observation: 2017/12/14
Preliminary a, adot, b, bdot, g, gdot:
  -0.000050   0.035030  -0.000045   0.010902   0.030443   0.000000
# Chi-squared of fit:     5.36 DOF:     26 RMS:  0.10
# Min/Max residuals:    -0.22    0.22
# Exact a, adot, b, bdot, g, gdot:
  1.794037E-05  3.447679E-02  5.654833E-06  1.072402E-02  3.013867E-02 -2.177219E-03
# Covariance matrix:
  4.9580E-13 -3.9278E-13  6.5986E-14 -1.1098E-13  4.5357E-14 -3.2236E-12
 -3.9278E-13  8.5249E-13 -1.5739E-13  3.0536E-13  3.1786E-13  8.5973E-12
  6.5986E-14 -1.5739E-13  3.6475E-13 -1.9844E-13 -3.8374E-14 -1.8055E-12
 -1.1098E-13  3.0536E-13 -1.9844E-13  1.9670E-13  1.0670E-13  3.4236E-12
  4.5357E-14  3.1786E-13 -3.8374E-14  1.0670E-13  4.1543E-13  2.8163E-12
 -3.2236E-12  8.5973E-12 -1.8055E-12  3.4236E-12  2.8163E-12  9.6851E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -20.521856   22.174704    0.841971   -0.198456   -0.530549  2456888.863398
# Heliocentric elements and errors
Epoch:              2456880.5000  =  2014/08/11
Mean Anomaly:          344.98556 +/-     0.043
Argument of Peri:      333.19780 +/-     0.076
Long of Asc Node:       69.49412 +/-     0.001
Inclination:            26.01884 +/-     0.000
Eccentricity:         0.24283088 +/-    0.0001
Semi-Major Axis:     43.71638415 +/-    0.0046
Time of Perihelion: 2461283.7293 +/-      12.7
Perihelion:          33.10069626 +/-    0.0062
Aphelion:            54.33207203 +/-    0.0077
Period (y)              289.0511 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           29.61591213 +/-    0.0006
Ecliptic Y           11.16461861 +/-    0.0002
Ecliptic Z          -11.63155584 +/-    0.0002
Ecliptic XDOT        -0.00104225 +/-    0.0000
Ecliptic YDOT         0.00295498 +/-    0.0000
Ecliptic ZDOT         0.00098182 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   33.72008380 +/-    0.0006
Geocenter to KBO     33.17996688 +/-    0.0007
# Hcoef:  8.32

The following table shows the complete astrometric record for 14QU562. 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 (14QU562) followed by the observatory code and reference code for the source of the astrometry.

2014 08  19.36262  01 52 32.374  -10 25 47.28  23.9r 14QU562   W84  C~52Tr      
2014 08  19.36537  01 52 32.370  -10 25 47.32  23.1z 14QU562   W84  C~52Tr      
2014 12  13.14380  01 43 36.201  -11 03 49.68  23.7i 14QU562   W84  C~52Tr      
2015 08  23.34879  01 58 54.928  -09 09 11.70  23.3i 14QU562   W84  C~52Tr      
2015 10  22.25178  01 54 26.226  -09 44 01.45  22.1z 14QU562   W84  C~52Tr      
2015 11  07.24827  01 52 53.885  -09 48 41.65  23.6i 14QU562   W84  C~52Tr      
2015 11  07.24964  01 52 53.885  -09 48 41.98  23.3r 14QU562   W84  C~52Tr      
2016 09  08.29388  02 04 37.240  -07 59 43.88  24.1r 14QU562   W84  C~52Tr      
2016 09  08.29525  02 04 37.239  -07 59 43.84  24.4g 14QU562   W84  C~52Tr      
2016 10  03.24871  02 02 43.931  -08 14 50.70  23.6r 14QU562   W84  C~52Tr      
2016 10  03.25008  02 02 43.935  -08 14 50.66  23.4i 14QU562   W84  C~52Tr      
2016 10  03.26523  02 02 43.850  -08 14 51.05  23.2z 14QU562   W84  C~52Tr      
2017 10  22.21056  02 07 32.451  -07 02 41.45  23.3r 14QU562   W84  C~52Tr      
2017 10  22.21195  02 07 32.442  -07 02 41.24  23.7i 14QU562   W84  C~52Tr      
2017 11  27.19569  02 04 12.478  -07 09 29.99  23.3i 14QU562   W84  C~52Tr      
2017 12  14.06214  02 03 02.294  -07 06 29.77  23.7r 14QU562   W84  C~52Tr      

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     0.03       0.00    -0.01
     2   0.0000     -0.07     0.08      -0.01     0.04
     3   0.3170  -8188.50    -0.07     814.18    -0.03
     4   1.0102   6972.30    -0.06    2127.20    -0.11
     5   1.1742   2498.97     0.08    1691.96     0.02
     6   1.2180   1128.43    -0.02    1944.57     0.22
     7   1.2180   1128.31    -0.04    1944.27    -0.12
     8   2.0559  13270.90    -0.01    4053.61    -0.22
     9   2.0559  13270.90     0.08    4053.65    -0.16
    10   2.1243  11362.30    -0.17    3856.38     0.06
    11   2.1243  11362.37     0.02    3856.39     0.07
    12   2.1243  11361.05     0.02    3856.51     0.19
    13   3.1755  17012.01    -0.07    6227.51    -0.01
    14   3.1755  17011.97     0.01    6227.75     0.22
    15   3.2740  14088.59     0.08    6988.82    -0.11
    16   3.3202  13187.85     0.03    7554.71    -0.09

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.

14QU562    quality flag:3

Type:         7:4EEE    7:4EII    7:4EEE
Type:         7:4EII              7:4EII

axisobj        44.115    44.129    44.102
ecceobj         0.248     0.249     0.248
incobj         26.016    26.016    26.016
qmin           31.427    31.604    31.298
qmax           56.542    56.347    56.749
amean          43.724    43.725    43.725
amin           43.339    43.323    43.322
amax           44.205    44.188    44.219
emean           0.215     0.139     0.231
emin            0.127     0.036     0.149
emax            0.280     0.276     0.284
imean          25.162    26.471    24.781
imin           23.396    23.516    23.244
imax           27.390    28.205    27.003
excite_mean     0.480     0.476     0.481
fracstop        1.000     1.000     1.000
cjmean          2.815     2.816     2.815

libcent 0       181.5     182.4     180.2
libamp  0        79.4     119.7      60.2
libcent 1       179.5    -180.0     179.0
libamp  1       108.5    -180.0      97.7
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       207.1      91.1     195.3
kozaiamp        180.0     180.0     180.0