Orbit Fit and Astrometric record for 16QO134

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: 16QO134   
# Created Thu Dec  9 02:13:50 2021
# Orbit generated from Bernstein formalism
# Fitting     11 observations of     11
# Arc:   3.86y
# First observation: 2013/11/08
#  Last observation: 2017/09/18
Preliminary a, adot, b, bdot, g, gdot:
  -0.000013   0.039700   0.000003  -0.011615   0.031905   0.000000
# Chi-squared of fit:     6.90 DOF:     16 RMS:  0.14
# Min/Max residuals:    -0.31    0.30
# Exact a, adot, b, bdot, g, gdot:
  1.874539E-05  3.965150E-02 -4.804576E-06 -1.163948E-02  3.265153E-02  3.021357E-03
# Covariance matrix:
  6.3008E-13 -5.2313E-13 -4.1633E-14  1.0251E-13 -1.5116E-13 -2.2172E-12
 -5.2313E-13  1.0197E-12  9.4735E-14 -2.3512E-13  3.4487E-14  5.0710E-12
 -4.1633E-14  9.4735E-14  4.7525E-13 -1.6703E-13  4.3950E-14  5.5926E-13
  1.0251E-13 -2.3512E-13 -1.6703E-13  1.2380E-13 -1.0063E-13 -1.3758E-12
 -1.5116E-13  3.4487E-14  4.3950E-14 -1.0063E-13  1.4223E-12  2.2349E-12
 -2.2172E-12  5.0710E-12  5.5926E-13 -1.3758E-12  2.2349E-12  2.9767E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -4.783397    8.977708   -0.590580   -0.066071   -0.791253  2456604.690648
# Heliocentric elements and errors
Epoch:              2456600.5000  =  2013/11/04
Mean Anomaly:           11.94456 +/-     0.016
Argument of Peri:      173.54810 +/-     0.031
Long of Asc Node:      174.54249 +/-     0.000
Inclination:            16.94888 +/-     0.000
Eccentricity:         0.29363559 +/-    0.0002
Semi-Major Axis:     43.70743288 +/-    0.0107
Time of Perihelion: 2453098.6373 +/-       4.5
Perihelion:          30.87337494 +/-    0.0102
Aphelion:            56.54149082 +/-    0.0155
Period (y)              288.9623 +/-      0.11
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           30.83723136 +/-    0.0011
Ecliptic Y            5.47281628 +/-    0.0002
Ecliptic Z           -2.55411169 +/-    0.0001
Ecliptic XDOT        -0.00035603 +/-    0.0000
Ecliptic YDOT         0.00330906 +/-    0.0000
Ecliptic ZDOT        -0.00099356 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   31.42308136 +/-    0.0011
Geocenter to KBO     30.62643333 +/-    0.0011
# Hcoef:  8.67

The following table shows the complete astrometric record for 16QO134. 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 (16QO134) followed by the observatory code and reference code for the source of the astrometry.

2013 11  08.18987  00 40 30.942  -00 50 22.09  23.0r 16QO134   W84  C~52ZY      
2013 11  08.19126  00 40 30.917  -00 50 22.01  23.8i 16QO134   W84  C~52ZY      
2014 10  28.20558  00 50 47.195  -00 27 44.67  23.5r 16QO134   W84  C~52ZY      
2014 10  28.20698  00 50 47.177  -00 27 44.78  23.7i 16QO134   W84  C~52ZY      
2016 08  16.39950  01 15 00.911  +00 52 57.09  23.8i 16QO134   W84  C~52ZY      
2016 08  26.32686  01 14 32.347  +00 47 13.56  23.1r 16QO134   W84  C~52ZY      
2016 11  03.18141  01 08 46.931  +00 01 39.65  23.8r 16QO134   W84  C~52ZY      
2017 08  22.41422  01 23 48.636  +01 05 33.21  23.4i 16QO134   W84  C~52ZY      
2017 08  27.38044  01 23 33.892  +01 02 37.40  24.4g 16QO134   W84  C~52ZY      
2017 09  18.26904  01 22 04.594  +00 48 08.19  23.8r 16QO134   W84  C~52ZY      
2017 09  18.27042  01 22 04.599  +00 48 08.34  24.0g 16QO134   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     0.09       0.00    -0.17
     2   0.0000     -0.31    -0.12       0.22     0.05
     3   0.9692   9038.58     0.09   -2388.00     0.01
     4   0.9692   9038.29    -0.08   -2387.99     0.02
     5   2.7713  31230.22     0.25   -6562.24    -0.02
     6   2.7985  30689.44    -0.17   -6710.31     0.30
     7   2.9870  24742.60     0.01   -7177.08     0.11
     8   3.7871  39039.82    -0.11   -9038.34    -0.31
     9   3.8007  38757.80    -0.05   -9113.55     0.08
    10   3.8606  37131.04    -0.08   -9385.37    -0.09
    11   3.8606  37131.18     0.17   -9385.26     0.03

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.

16QO134    quality flag:3

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

axisobj        44.012    44.046    43.978
ecceobj         0.299     0.300     0.299
incobj         16.907    16.907    16.908
qmin           30.507    30.424    30.503
qmax           57.532    57.568    57.456
amean          43.725    43.725    43.725
amin           43.297    43.304    43.287
amax           44.244    44.246    44.255
emean           0.128     0.210     0.234
emin            0.026     0.054     0.089
emax            0.300     0.303     0.300
imean          21.542    19.644    19.217
imin           16.191    16.193    16.188
imax           23.859    23.695    23.134
excite_mean     0.404     0.406     0.408
fracstop        1.000     1.000     1.000
cjmean          2.898     2.898     2.896

libcent 0       205.1     174.4     187.2
libamp  0       118.4     152.1     154.6
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       199.3     256.1     212.9
kozaiamp         75.4     180.0     180.0