Orbit Fit and Astrometric record for 14QW562

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: 14QW562   
# Created Wed Dec  8 02:12:40 2021
# Orbit generated from Bernstein formalism
# Fitting     14 observations of     14
# Arc:   4.28y
# First observation: 2014/08/19
#  Last observation: 2018/11/30
Preliminary a, adot, b, bdot, g, gdot:
   0.000176   0.029486  -0.000021  -0.001584   0.026591   0.000000
# Chi-squared of fit:     6.52 DOF:     22 RMS:  0.12
# Min/Max residuals:    -0.28    0.32
# Exact a, adot, b, bdot, g, gdot:
  1.778144E-05  2.960240E-02 -1.656117E-06 -1.591823E-03  2.654570E-02  3.392844E-03
# Covariance matrix:
  5.8757E-13 -2.5216E-13  8.6064E-15  1.7513E-14  2.1720E-13 -2.2883E-12
 -2.5216E-13  6.0197E-13  3.3005E-14 -4.4599E-14  3.0081E-13  5.7891E-12
  8.6064E-15  3.3005E-14  3.3514E-13 -1.0951E-13  4.1527E-14  2.8576E-13
  1.7513E-14 -4.4599E-14 -1.0951E-13  5.4521E-14 -1.6457E-14 -4.8881E-13
  2.1720E-13  3.0081E-13  4.1527E-14 -1.6457E-14  5.6732E-13  2.1157E-12
 -2.2883E-12  5.7891E-12  2.8576E-13 -4.8881E-13  2.1157E-12  6.3502E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -19.915317   20.301187    0.822987   -0.202108   -0.558234  2456888.864778
# Heliocentric elements and errors
Epoch:              2456880.5000  =  2014/08/11
Mean Anomaly:           16.61566 +/-     0.037
Argument of Peri:      232.60010 +/-     0.066
Long of Asc Node:      119.56272 +/-     0.001
Inclination:            19.92025 +/-     0.000
Eccentricity:         0.23840836 +/-    0.0002
Semi-Major Axis:     49.11818065 +/-    0.0087
Time of Perihelion: 2451077.1751 +/-      12.8
Perihelion:          37.40799566 +/-    0.0118
Aphelion:            60.82836563 +/-    0.0146
Period (y)              344.2481 +/-      0.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           34.05781272 +/-    0.0009
Ecliptic Y           11.72471873 +/-    0.0003
Ecliptic Z          -12.83193622 +/-    0.0004
Ecliptic XDOT        -0.00080806 +/-    0.0000
Ecliptic YDOT         0.00295391 +/-    0.0000
Ecliptic ZDOT        -0.00027343 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.23692226 +/-    0.0009
Geocenter to KBO     37.67089050 +/-    0.0011
# Hcoef:  7.85

The following table shows the complete astrometric record for 14QW562. 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 (14QW562) followed by the observatory code and reference code for the source of the astrometry.

2014 08  19.36400  01 44 59.134  -10 31 51.16  23.5i 14QW562   W84  C~52Ts      
2014 09  25.25078  01 43 01.556  -10 56 27.96  23.8r 14QW562   W84  C~52Ts      
2014 12  15.14897  01 37 17.775  -11 15 10.95  23.6r 14QW562   W84  C~52Ts      
2015 08  23.38123  01 51 21.726  -10 00 42.20  23.9r 14QW562   W84  C~52Ts      
2015 10  22.21801  01 47 28.904  -10 37 05.97  23.0i 14QW562   W84  C~52Ts      
2015 11  06.16684  01 46 15.727  -10 42 15.74  23.9r 14QW562   W84  C~52Ts      
2016 11  03.25280  01 52 56.818  -10 07 46.99  23.0r 14QW562   W84  C~52Ts      
2016 11  03.25417  01 52 56.834  -10 07 47.42  23.0i 14QW562   W84  C~52Ts      
2017 09  26.28547  02 02 25.262  -09 15 02.61  23.6g 14QW562   W84  C~52Ts      
2017 11  16.14009  01 58 24.183  -09 36 31.00  24.0r 14QW562   W84  C~52Ts      
2017 11  16.14148  01 58 24.171  -09 36 31.05  23.6i 14QW562   W84  C~52Ts      
2017 12  15.12284  01 56 37.625  -09 35 17.89  24.1r 14QW562   W84  C~52Ts      
2018 11  28.18820  02 03 56.303  -09 03 14.75  24.2r 14QW562   W84  C~52Ts      
2018 11  30.10539  02 03 48.754  -09 03 14.14  24.3g 14QW562   W84  C~52Ts      

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     0.15
     2   0.1010  -2163.11     0.14    -710.56    -0.08
     3   0.3225  -7277.44     0.04     150.59    -0.05
     4   1.0103   5934.33     0.01    -428.55    -0.12
     5   1.1741   1922.72    -0.28   -1131.22    -0.09
     6   1.2151    807.26    -0.11   -1006.79     0.11
     7   2.2091   7068.51     0.07   -1361.40     0.32
     8   2.2091   7068.57     0.22   -1361.89    -0.18
     9   3.1045  16072.55    -0.00   -1712.63    -0.09
    10   3.2437  12267.15     0.04   -1505.29     0.04
    11   3.2437  12266.97    -0.05   -1505.27     0.04
    12   3.3231  10838.59     0.01    -824.67    -0.03
    13   4.2760  17600.49    -0.03   -1589.98    -0.11
    14   4.2813  17497.11    -0.02   -1545.35     0.10

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.

14QW562    quality flag:2

Type:       SCATNEAR  SCATNEAR  SCATEXTD

axisobj        49.647    49.676    49.618
ecceobj         0.247     0.247     0.246
incobj         19.913    19.913    19.913
qmin           36.616    36.582    36.629
qmax           62.349    62.465    62.228
amean          49.234    49.235    49.190
amin           48.769    48.772    48.738
amax           49.776    49.782    49.720
emean           0.238     0.239     0.237
emin            0.224     0.225     0.223
emax            0.253     0.256     0.253
imean          18.412    18.364    18.416
imin           17.875    17.833    17.915
imax           18.912    18.866    18.912
excite_mean     0.396     0.396     0.395
fracstop        1.000     1.000     1.000
cjmean          2.969     2.969     2.969

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       179.2     178.7     179.2
kozaiamp        180.0     180.0     179.9