Orbit Fit and Astrometric record for 16QE135

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: 16QE135   
# Created Sat Dec  4 02:13:53 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     20 observations of     20
# Arc:   5.01y
# First observation: 2013/11/05
#  Last observation: 2018/11/07
# Chi-squared of fit:     4.53 DOF:     34 RMS:  0.08
# Min/Max residuals:    -0.18    0.16
# Exact a, adot, b, bdot, g, gdot:
  1.591364E-05  2.682216E-02  6.786880E-06  1.155942E-02  2.707948E-02 -8.287297E-04
# Covariance matrix:
  4.7434E-13 -2.1979E-13  3.2506E-14 -5.1915E-14 -1.0611E-13 -9.1387E-13
 -2.1979E-13  4.0253E-13 -9.7714E-14  1.4947E-13 -1.0059E-13  2.6462E-12
  3.2506E-14 -9.7714E-14  4.1224E-13 -1.3823E-13  2.4474E-14 -6.9686E-13
 -5.1915E-14  1.4947E-13 -1.3823E-13  9.1451E-14 -3.1155E-14  1.0683E-12
 -1.0611E-13 -1.0059E-13  2.4474E-14 -3.1155E-14  4.2521E-13 -5.6651E-13
 -9.1387E-13  2.6462E-12 -6.9686E-13  1.0683E-12 -5.6651E-13  1.8908E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -14.224777    9.017741   -0.545465   -0.203024   -0.801386  2456601.521858
# Heliocentric elements and errors
Epoch:              2456602.5000  =  2013/11/06
Mean Anomaly:          353.28520 +/-     0.069
Argument of Peri:      336.62821 +/-     0.087
Long of Asc Node:       38.81868 +/-     0.000
Inclination:            27.10952 +/-     0.000
Eccentricity:         0.11306159 +/-    0.0001
Semi-Major Axis:     42.49685096 +/-    0.0057
Time of Perihelion: 2458489.9010 +/-      27.8
Perihelion:          37.69208928 +/-    0.0063
Aphelion:            47.30161265 +/-    0.0073
Period (y)              277.0405 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           36.08395470 +/-    0.0009
Ecliptic Y            6.28197090 +/-    0.0001
Ecliptic Z           -9.07406714 +/-    0.0002
Ecliptic XDOT        -0.00022781 +/-    0.0000
Ecliptic YDOT         0.00270892 +/-    0.0000
Ecliptic ZDOT         0.00115360 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.73399462 +/-    0.0008
Geocenter to KBO     36.92839192 +/-    0.0009
# Hcoef:  7.50

The following table shows the complete astrometric record for 16QE135. 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 (16QE135) followed by the observatory code and reference code for the source of the astrometry.

2013 11  05.02108  00 55 38.97   -09 29 52.9         16QE135   W84  C~55Zd      
2013 11  05.05951  00 55 38.80   -09 29 53.2   23.2r 16QE135   W84  C~55Zd      
2013 11  05.15284  00 55 38.36   -09 29 53.8         16QE135   W84  C~55Zd      
2016 08  16.42463  01 15 31.117  -05 16 17.93  22.8i 16QE135   W84  C~55Zd      
2016 08  31.28268  01 14 44.681  -05 23 00.43  23.8g 16QE135   W84  C~55Zd      
2016 10  01.22049  01 12 24.316  -05 37 46.99  23.3r 16QE135   W84  C~55Zd      
2016 10  01.22187  01 12 24.312  -05 37 46.91  23.0i 16QE135   W84  C~55Zd      
2016 10  01.22324  01 12 24.286  -05 37 47.01  24.1g 16QE135   W84  C~55Zd      
2016 10  22.16487  01 10 35.077  -05 45 53.17  24.2g 16QE135   W84  C~55Zd      
2016 10  23.16247  01 10 29.942  -05 46 11.48  22.9r 16QE135   W84  C~55Zd      
2017 08  28.30602  01 19 28.065  -04 07 36.14  23.1g 16QE135   W84  C~55Zd      
2017 09  03.39682  01 19 06.225  -04 10 22.63  23.5g 16QE135   W84  C~55Zd      
2017 09  18.27452  01 18 02.990  -04 17 24.54  23.1i 16QE135   W84  C~55Zd      
2017 09  18.27590  01 18 02.977  -04 17 24.56  23.5r 16QE135   W84  C~55Zd      
2017 09  18.31800  01 18 02.784  -04 17 25.64  22.9z 16QE135   W84  C~55Zd      
2017 09  24.25921  01 17 34.378  -04 20 13.47  22.8z 16QE135   W84  C~55Zd      
2018 10  19.15897  01 20 00.694  -03 16 09.91  23.0z 16QE135   W84  C~55Zd      
2018 11  06.19794  01 18 29.321  -03 21 25.31  23.2r 16QE135   W84  C~55Zd      
2018 11  06.19932  01 18 29.326  -03 21 25.45  23.0i 16QE135   W84  C~55Zd      
2018 11  07.20318  01 18 24.524  -03 21 38.23  23.9g 16QE135   W84  C~55Zd      

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    -0.05       0.00    -0.03
     2   0.0001      0.00     0.08       0.00    -0.04
     3   0.0004      0.00    -0.02       0.00     0.06
     4   2.7800      0.00     0.10       0.00     0.10
     5   2.8207      0.00     0.04       0.00    -0.02
     6   2.9054      0.00     0.10       0.00    -0.03
     7   2.9054      0.00     0.15       0.00     0.09
     8   2.9054      0.00    -0.14       0.00     0.03
     9   2.9627      0.00    -0.07       0.00    -0.17
    10   2.9655      0.00    -0.07       0.00     0.08
    11   3.8119      0.00    -0.16       0.00    -0.18
    12   3.8285      0.00     0.08       0.00    -0.03
    13   3.8693      0.00     0.04       0.00     0.00
    14   3.8693      0.00    -0.06       0.00     0.02
    15   3.8694      0.00     0.04       0.00     0.14
    16   3.8857      0.00    -0.03       0.00    -0.02
    17   4.9531      0.00    -0.05       0.00     0.02
    18   5.0025      0.00    -0.02       0.00     0.10
    19   5.0025      0.00     0.16       0.00    -0.02
    20   5.0053      0.00     0.00       0.00    -0.07

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.

16QE135    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        42.746    42.746    42.746
ecceobj         0.118     0.118     0.118
incobj         27.077    27.077    27.077
qmin           36.280    36.278    36.283
qmax           48.998    48.993    48.999
amean          42.510    42.507    42.508
amin           42.155    42.157    42.145
amax           42.905    42.884    42.887
emean           0.120     0.121     0.121
emin            0.098     0.098     0.097
emax            0.144     0.144     0.144
imean          26.251    26.242    26.241
imin           25.736    25.726    25.717
imax           26.755    26.733    26.737
excite_mean     0.458     0.458     0.459
fracstop        1.000     1.000     1.000
cjmean          2.823     2.824     2.823

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       173.3     173.6     173.9
kozaiamp        180.0     180.0     180.0