Orbit Fit and Astrometric record for 16QZ133

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: 16QZ133   
# Created Sat Nov 27 02:13:58 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     13 observations of     13
# Arc:   5.12y
# First observation: 2013/09/30
#  Last observation: 2018/11/15
# Chi-squared of fit:     2.12 DOF:     20 RMS:  0.07
# Min/Max residuals:    -0.13    0.14
# Exact a, adot, b, bdot, g, gdot:
  1.404631E-05  1.925022E-02 -2.239428E-06 -2.736186E-03  2.143131E-02  2.030323E-03
# Covariance matrix:
  6.5439E-13 -4.4324E-13 -2.3247E-14  4.4328E-14 -1.1395E-13 -3.6977E-12
 -4.4324E-13  7.0558E-13  5.0502E-14 -9.6118E-14  1.6844E-13  8.0475E-12
 -2.3247E-14  5.0502E-14  5.1685E-13 -1.4734E-13  1.0581E-14  6.2044E-13
  4.4328E-14 -9.6118E-14 -1.4734E-13  6.3190E-14 -2.2446E-14 -1.1795E-12
 -1.1395E-13  1.6844E-13  1.0581E-14 -2.2446E-14  1.0468E-12  1.4985E-12
 -3.6977E-12  8.0475E-12  6.2044E-13 -1.1795E-12  1.4985E-12  9.8972E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -9.128507    3.813911   -0.052741   -0.158588   -0.987591  2456565.670898
# Heliocentric elements and errors
Epoch:              2456566.5000  =  2013/10/01
Mean Anomaly:           82.36475 +/-     0.112
Argument of Peri:      133.98255 +/-     0.095
Long of Asc Node:      136.45089 +/-     0.002
Inclination:            12.05456 +/-     0.000
Eccentricity:         0.10217254 +/-    0.0005
Semi-Major Axis:     47.80058113 +/-    0.0117
Time of Perihelion: 2428948.8270 +/-      39.0
Perihelion:          42.91667434 +/-    0.0263
Aphelion:            52.68448792 +/-    0.0273
Period (y)              330.4897 +/-      0.12
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           46.96175472 +/-    0.0022
Ecliptic Y            3.18663728 +/-    0.0002
Ecliptic Z           -7.40281246 +/-    0.0004
Ecliptic XDOT         0.00003044 +/-    0.0000
Ecliptic YDOT         0.00246579 +/-    0.0000
Ecliptic ZDOT        -0.00038613 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   47.64825462 +/-    0.0022
Geocenter to KBO     46.66066856 +/-    0.0022
# Hcoef:  6.28

The following table shows the complete astrometric record for 16QZ133. 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 (16QZ133) followed by the observatory code and reference code for the source of the astrometry.

2013 09  30.17012  00 28 33.000  -06 51 34.06  22.4r 16QZ133   W84  C~52ZW      
2013 09  30.17161  00 28 32.990  -06 51 34.08  21.8i 16QZ133   W84  C~52ZW      
2014 10  20.14010  00 31 34.731  -06 41 37.84  23.2i 16QZ133   W84  C~52ZW      
2016 08  31.27034  00 43 12.697  -05 43 57.42  23.9r 16QZ133   W84  C~52ZW      
2016 08  31.27172  00 43 12.700  -05 43 57.44  23.6i 16QZ133   W84  C~52ZW      
2016 10  01.20950  00 41 19.145  -05 58 33.04  22.7r 16QZ133   W84  C~52ZW      
2016 10  02.19011  00 41 15.250  -05 58 59.26  22.3i 16QZ133   W84  C~52ZW      
2016 11  06.11488  00 39 05.516  -06 11 05.13  23.3z 16QZ133   W84  C~52ZW      
2017 09  26.30306  00 45 53.582  -05 38 15.44  22.6i 16QZ133   W84  C~52ZW      
2017 09  27.27169  00 45 49.808  -05 38 42.17  22.7z 16QZ133   W84  C~52ZW      
2017 09  27.30886  00 45 49.661  -05 38 43.22  22.8i 16QZ133   W84  C~52ZW      
2017 10  20.24987  00 44 19.753  -05 48 10.32  22.6z 16QZ133   W84  C~52ZW      
2018 11  15.05695  00 47 05.489  -05 37 01.97  23.3i 16QZ133   W84  C~52ZW      

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     0.01       0.00     0.05
     2   0.0000      0.00    -0.05       0.00     0.07
     3   1.0540      0.00     0.04       0.00    -0.13
     4   2.9188      0.00    -0.06       0.00    -0.02
     5   2.9188      0.00     0.05       0.00    -0.00
     6   3.0035      0.00     0.12       0.00     0.14
     7   3.0062      0.00    -0.06       0.00    -0.11
     8   3.1018      0.00     0.05       0.00    -0.07
     9   3.9894      0.00    -0.05       0.00     0.08
    10   3.9921      0.00     0.05       0.00    -0.01
    11   3.9922      0.00     0.06       0.00    -0.04
    12   4.0550      0.00    -0.12       0.00     0.02
    13   5.1249      0.00     0.02       0.00     0.04

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.

16QZ133    quality flag:3

Type:           2:1E      2:1E      2:1E

axisobj        48.096    48.096    48.096
ecceobj         0.104     0.104     0.104
incobj         12.031    12.031    12.031
qmin           40.014    40.021    40.012
qmax           56.021    55.995    56.027
amean          47.798    47.798    47.798
amin           47.339    47.340    47.339
amax           48.288    48.292    48.289
emean           0.122     0.122     0.122
emin            0.082     0.082     0.082
emax            0.160     0.160     0.160
imean          10.393    10.395    10.391
imin            9.655     9.656     9.654
imax           11.249    11.246    11.253
excite_mean     0.218     0.218     0.218
fracstop        1.000     1.000     1.000
cjmean          3.090     3.090     3.090

libcent 0       104.0     104.9     102.2
libamp  0        45.4      45.7      45.4
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       185.4     185.6     185.5
kozaiamp        180.0     180.0     180.0