Orbit Fit and Astrometric record for 16QN134

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: 16QN134   
# Created Sun Dec  5 02:13:46 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     17 observations of     17
# Arc:   5.01y
# First observation: 2013/10/13
#  Last observation: 2018/10/18
# Chi-squared of fit:     5.85 DOF:     28 RMS:  0.10
# Min/Max residuals:    -0.27    0.24
# Exact a, adot, b, bdot, g, gdot:
  1.639472E-05  2.873416E-02 -1.206688E-06 -1.483570E-03  2.682171E-02 -2.805628E-03
# Covariance matrix:
  6.4014E-13 -3.4531E-13 -7.1833E-15  1.0432E-14 -6.2194E-14 -1.4773E-12
 -3.4531E-13  3.9556E-13  1.0967E-14 -1.8265E-14  2.9148E-13  2.5893E-12
 -7.1833E-15  1.0967E-14  4.9082E-13 -1.3305E-13  6.0624E-15  7.8308E-14
  1.0432E-14 -1.8265E-14 -1.3305E-13  4.4222E-14 -1.8354E-14 -1.3672E-13
 -6.2194E-14  2.9148E-13  6.0624E-15 -1.8354E-14  8.5523E-13  2.6106E-12
 -1.4773E-12  2.5893E-12  7.8308E-14 -1.3672E-13  2.6106E-12  1.9388E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -5.075678    9.632054   -0.174372   -0.086760   -0.978195  2456578.713688
# Heliocentric elements and errors
Epoch:              2456578.5000  =  2013/10/13
Mean Anomaly:          328.70409 +/-     0.031
Argument of Peri:      281.91031 +/-     0.045
Long of Asc Node:      130.56953 +/-     0.004
Inclination:             5.74500 +/-     0.000
Eccentricity:         0.15725856 +/-    0.0002
Semi-Major Axis:     43.78405640 +/-    0.0072
Time of Perihelion: 2465777.8575 +/-      25.5
Perihelion:          36.89863876 +/-    0.0093
Aphelion:            50.66947403 +/-    0.0109
Period (y)              289.7225 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           37.55191077 +/-    0.0013
Ecliptic Y            6.55303828 +/-    0.0002
Ecliptic Z           -3.29858769 +/-    0.0001
Ecliptic XDOT        -0.00079138 +/-    0.0000
Ecliptic YDOT         0.00284030 +/-    0.0000
Ecliptic ZDOT        -0.00012537 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.26190771 +/-    0.0012
Geocenter to KBO     37.28333382 +/-    0.0013
# Hcoef:  7.87

The following table shows the complete astrometric record for 16QN134. 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 (16QN134) followed by the observatory code and reference code for the source of the astrometry.

2013 10  13.21291  00 43 22.400  -00 51 08.46  23.5i 16QN134   W84  C~52ZY      
2013 10  13.21708  00 43 22.379  -00 51 08.76  23.3z 16QN134   W84  C~52ZY      
2014 11  13.13256  00 47 21.533  -00 29 35.79  24.0r 16QN134   W84  C~52ZY      
2016 08  30.35544  01 05 17.404  +01 14 09.00  23.9r 16QN134   W84  C~52ZY      
2016 10  29.21651  01 00 47.058  +00 44 03.24  24.0r 16QN134   W84  C~52ZY      
2016 10  29.21788  01 00 47.060  +00 44 03.17  23.3i 16QN134   W84  C~52ZY      
2016 10  29.22062  01 00 47.044  +00 44 03.06  23.8r 16QN134   W84  C~52ZY      
2016 11  06.20111  01 00 12.123  +00 40 52.43  23.1i 16QN134   W84  C~52ZY      
2016 11  06.20249  01 00 12.117  +00 40 52.32  24.2r 16QN134   W84  C~52ZY      
2016 11  08.12026  01 00 04.175  +00 40 10.57  22.9z 16QN134   W84  C~52ZY      
2017 08  22.34106  01 11 58.502  +01 52 05.58  23.7i 16QN134   W84  C~52ZY      
2017 08  22.34244  01 11 58.483  +01 52 05.71  23.3r 16QN134   W84  C~52ZY      
2017 09  18.28318  01 10 20.102  +01 39 16.74  23.3i 16QN134   W84  C~52ZY      
2017 09  18.28456  01 10 20.094  +01 39 16.70  23.5r 16QN134   W84  C~52ZY      
2017 09  27.23909  01 09 39.206  +01 34 33.48  23.2z 16QN134   W84  C~52ZY      
2018 09  14.34976  01 16 57.115  +02 16 00.30  23.5r 16QN134   W84  C~52ZY      
2018 10  18.20459  01 14 18.180  +01 58 30.55  23.1z 16QN134   W84  C~52ZY      

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     0.08       0.00     0.11
     2   0.0000      0.00     0.06       0.00    -0.07
     3   1.0840      0.00    -0.20       0.00    -0.08
     4   2.8806      0.00    -0.00       0.00     0.01
     5   3.0445      0.00    -0.07       0.00     0.05
     6   3.0445      0.00     0.05       0.00     0.01
     7   3.0445      0.00     0.00       0.00    -0.03
     8   3.0664      0.00     0.03       0.00     0.05
     9   3.0664      0.00     0.03       0.00    -0.03
    10   3.0716      0.00     0.03       0.00    -0.12
    11   3.8580      0.00     0.11       0.00     0.03
    12   3.8580      0.00    -0.11       0.00     0.19
    13   3.9317      0.00     0.01       0.00    -0.01
    14   3.9317      0.00    -0.02       0.00    -0.01
    15   3.9563      0.00     0.14       0.00     0.05
    16   4.9203      0.00    -0.27       0.00    -0.19
    17   5.0130      0.00     0.24       0.00     0.06

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.

16QN134    quality flag:3

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

axisobj        44.048    44.048    44.049
ecceobj         0.160     0.160     0.160
incobj          5.738     5.738     5.738
qmin           36.114    36.117    36.111
qmax           51.816    51.804    51.825
amean          43.727    43.727    43.727
amin           43.289    43.287    43.288
amax           44.215    44.214    44.216
emean           0.156     0.156     0.156
emin            0.137     0.137     0.137
emax            0.172     0.172     0.173
imean           4.036     4.032     4.039
imin            2.905     2.899     2.910
imax            5.358     5.357     5.358
excite_mean     0.171     0.171     0.172
fracstop        1.000     1.000     1.000
cjmean          3.063     3.063     3.063

libcent 0       179.0     178.1     178.0
libamp  0       109.5     110.6     109.6
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     174.8     174.8
kozaiamp        179.9     180.0     179.9