Orbit Fit and Astrometric record for 16QF86

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: 16QF86    
# Created Wed Feb 20 02:10:44 2019
# Orbit generated from Bernstein formalism
# Fitting   46 observations of   46
# Arc:   3.30y
# First observation: 2014/07/01
#  Last observation: 2017/10/19
Preliminary a, adot, b, bdot, g, gdot:
  -0.000017   0.037316  -0.000031   0.005273   0.037832   0.000000
# Chi-squared of fit:    40.66 DOF:   86 RMS:  0.17
# Min/Max residuals:    -0.58    0.43
# Exact a, adot, b, bdot, g, gdot:
  1.512259E-05  3.660094E-02  1.514973E-06  5.158981E-03  3.713462E-02 -6.886288E-04
# Covariance matrix:
  1.4714E-13  1.1120E-15 -5.2173E-15  4.8946E-15  1.0312E-13  2.8276E-13
  1.1120E-15  2.9622E-13 -2.0720E-14  5.2776E-14  2.3798E-13  2.8531E-12
 -5.2173E-15 -2.0720E-14  1.1099E-13 -4.1765E-14 -2.2699E-14 -2.0435E-13
  4.8946E-15  5.2776E-14 -4.1765E-14  2.8666E-14  3.9753E-14  5.5139E-13
  1.0312E-13  2.3798E-13 -2.2699E-14  3.9753E-14  3.5365E-13  2.1881E-12
  2.8276E-13  2.8531E-12 -2.0435E-13  5.5139E-13  2.1881E-12  2.9741E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   11.131313  -31.207918    0.771744    0.128430   -0.652420  2456840.059238
# Heliocentric elements and errors
Epoch:              2456840.5000  =  2014/07/02
Mean Anomaly:          190.94380 +/-     0.019
Argument of Peri:      226.80865 +/-     0.018
Long of Asc Node:      275.11920 +/-     0.001
Inclination:            13.67712 +/-     0.000
Eccentricity:         0.31357247 +/-    0.0000
Semi-Major Axis:     21.05689682 +/-    0.0007
Time of Perihelion: 2473414.1657 +/-       1.7
Perihelion:          14.45403363 +/-    0.0007
Aphelion:            27.65976001 +/-    0.0011
Period (y)               96.6273 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           22.76596826 +/-    0.0004
Ecliptic Y          -14.69321202 +/-    0.0002
Ecliptic Z            5.19897218 +/-    0.0001
Ecliptic XDOT         0.00128769 +/-    0.0000
Ecliptic YDOT         0.00236800 +/-    0.0000
Ecliptic ZDOT         0.00036353 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   27.59001816 +/-    0.0003
Geocenter to KBO     26.92904939 +/-    0.0004
# Hcoef:  8.36

The following table shows the complete astrometric record for 16QF86. 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 (16QF86) followed by the observatory code and reference code for the source of the astrometry.

2014 07  01.55846  21 48 20.126  -01 26 18.09  23.1G 16QF86    F51  C~2og5      
2014 07  01.57057  21 48 20.072  -01 26 18.34  22.6G 16QF86    F51  C~2og5      
2014 07  01.58269  21 48 20.006  -01 26 18.19  22.6G 16QF86    F51  C~2og5      
2014 07  01.59479  21 48 19.956  -01 26 18.18  23.1G 16QF86    F51  C~2og5      
2014 07  01.60495  21 48 19.907  -01 26 18.93  21.7G 16QF86    F51  C~2og5      
2014 08  20.37807  21 43 09.612  -01 42 29.40  23.2G 16QF86    F51  C~2og5      
2014 08  20.39082  21 43 09.505  -01 42 29.48  22.7G 16QF86    F51  C~2og5      
2014 08  20.40358  21 43 09.428  -01 42 30.15  22.9G 16QF86    F51  C~2og5      
2014 08  20.41640  21 43 09.323  -01 42 30.46  22.5G 16QF86    F51  C~2og5      
2014 08  21.35483  21 43 02.730  -01 43 03.02  22.6G 16QF86    F51  C~2og5      
2014 08  21.36768  21 43 02.652  -01 43 03.34  22.7G 16QF86    F51  C~2og5      
2014 08  21.38055  21 43 02.542  -01 43 04.03  22.8G 16QF86    F51  C~2og5      
2014 08  21.39347  21 43 02.465  -01 43 04.25  22.6G 16QF86    F51  C~2og5      
2016 07  09.57684  22 02 41.023  +00 32 49.94  22.8G 16QF86    F51  C~2og5      
2016 07  09.58548  22 02 40.982  +00 32 49.87  22.9G 16QF86    F51  C~2og5      
2016 07  09.59409  22 02 40.944  +00 32 49.75  23.3G 16QF86    F51  C~2og5      
2016 07  09.60270  22 02 40.896  +00 32 49.80  22.7G 16QF86    F51  C~2og5      
2016 08  23.251852 21 57 56.75   +00 16 25.1   22.0z 16QF86    W84  C~2KZO      
2016 08  30.37980  21 57 06.982  +00 11 56.53  22.5G 16QF86    F51  C~2og5      
2016 09  05.214630 21 56 27.12   +00 08 03.3   22.9r 16QF86    W84  C~2KZO      
2016 09  08.089734 21 56 07.99   +00 06 05.2   22.1i 16QF86    W84  C~2KZO      
2016 09  26.032454 21 54 19.74   -00 06 38.3   22.3r 16QF86    W84  C~2KZO      
2016 09  26.033819 21 54 19.74   -00 06 38.2   21.9i 16QF86    W84  C~2KZO      
2016 09  26.035185 21 54 19.73   -00 06 38.2   22.7g 16QF86    W84  C~2KZO      
2017 07  26.50393  22 08 44.977  +01 30 13.68  22.8G 16QF86    F51  C~2og5      
2017 07  26.51667  22 08 44.913  +01 30 13.51  23.1G 16QF86    F51  C~2og5      
2017 07  26.54220  22 08 44.743  +01 30 13.01  22.6G 16QF86    F51  C~2og5      
2017 07  29.52140  22 08 26.210  +01 29 17.63  23.1G 16QF86    F51  C~2og5      
2017 08  06.205775 22 07 36.21   +01 26 23.1         16QF86    W84  C~2KZO      
2017 08  19.213692 22 06 06.49   +01 19 55.1         16QF86    W84  C~2KZO      
2017 08  23.47375  22 05 36.482  +01 17 25.71  22.4G 16QF86    F51  C~2og5      
2017 08  23.48573  22 05 36.400  +01 17 25.23  22.3G 16QF86    F51  C~2og5      
2017 08  23.49765  22 05 36.288  +01 17 25.00  21.9G 16QF86    F51  C~2og5      
2017 08  23.50965  22 05 36.218  +01 17 24.46  22.3G 16QF86    F51  C~2og5      
2017 08  24.46518  22 05 29.490  +01 16 49.62  22.6G 16QF86    F51  C~2og5      
2017 08  24.47651  22 05 29.420  +01 16 49.40  22.7G 16QF86    F51  C~2og5      
2017 08  24.48780  22 05 29.327  +01 16 48.90  22.3G 16QF86    F51  C~2og5      
2017 08  24.49907  22 05 29.248  +01 16 48.30  22.0G 16QF86    F51  C~2og5      
2017 09  13.37190  22 03 13.680  +01 03 25.55  22.2G 16QF86    F51  C~2og5      
2017 09  13.38524  22 03 13.589  +01 03 25.05  22.1G 16QF86    F51  C~2og5      
2017 09  13.39852  22 03 13.505  +01 03 24.26  22.4G 16QF86    F51  C~2og5      
2017 09  13.41177  22 03 13.408  +01 03 23.45  22.2G 16QF86    F51  C~2og5      
2017 09  27.28578  22 01 50.509  +00 53 13.87  22.3G 16QF86    F51  C~2og5      
2017 09  28.35909  22 01 44.729  +00 52 27.16  22.5G 16QF86    F51  C~2og5      
2017 10  07.37408  22 01 00.491  +00 45 56.97  22.5G 16QF86    F51  C~2og5      
2017 10  19.22546  22 00 15.719  +00 37 54.30  21.7G 16QF86    F51  C~2og5      

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     0.10       0.00     0.14
  2   0.0000     -0.85     0.04       0.04    -0.09
  3   0.0001     -1.73    -0.04       0.52     0.11
  4   0.0001     -2.43     0.05       0.78     0.10
  5   0.0001     -3.37    -0.23       0.33    -0.58
  6   0.1364  -4709.63     0.02     669.90    -0.26
  7   0.1364  -4711.16    -0.08     670.37     0.16
  8   0.1365  -4712.48     0.05     670.13    -0.13
  9   0.1365  -4714.06    -0.09     670.37     0.06
 10   0.1391  -4818.15    -0.04     673.34     0.05
 11   0.1391  -4819.36     0.20     673.43     0.10
 12   0.1391  -4821.15    -0.13     673.34    -0.04
 13   0.1392  -4822.31     0.17     673.53     0.10
 14   2.0233  14600.21    -0.03    2324.74     0.04
 15   2.0233  14599.60    -0.01    2324.89     0.00
 16   2.0234  14599.02     0.05    2324.97    -0.10
 17   2.0234  14598.36     0.02    2325.26     0.01
 18   2.1456  10239.78    -0.22    2851.26     0.19
 19   2.1652   9444.54     0.10    2852.85     0.11
 20   2.1811   8801.60    -0.09    2837.08    -0.07
 21   2.1890   8491.01     0.07    2823.70     0.20
 22   2.2381   6701.65    -0.09    2658.47     0.02
 23   2.2381   6701.68     0.07    2658.57     0.13
 24   2.2381   6701.54     0.05    2658.62     0.20
 25   3.0690  20953.98    -0.01    3713.21     0.02
 26   3.0690  20953.01     0.23    3713.37    -0.01
 27   3.0691  20950.42     0.06    3713.77    -0.01
 28   3.0772  20667.40    -0.17    3756.23     0.26
 29   3.0983  19895.56     0.08    3847.04    -0.05
 30   3.1339  18486.16    -0.03    3939.33     0.03
 31   3.1456  18008.39     0.03    3951.70    -0.07
 32   3.1456  18007.06     0.07    3951.66    -0.13
 33   3.1456  18005.39    -0.23    3952.02     0.19
 34   3.1457  18004.21    -0.04    3951.87     0.01
 35   3.1483  17896.66    -0.08    3953.37    -0.09
 36   3.1483  17895.59     0.15    3953.52     0.04
 37   3.1483  17894.09    -0.06    3953.52     0.02
 38   3.1484  17892.76    -0.10    3953.36    -0.17
 39   3.2028  15692.88     0.21    3888.87     0.24
 40   3.2028  15691.42     0.19    3888.86     0.33
 41   3.2028  15689.95     0.16    3888.55     0.11
 42   3.2029  15688.30    -0.06    3888.28    -0.07
 43   3.2409  14304.10    -0.52    3737.19    -0.53
 44   3.2438  14206.19    -0.19    3722.69    -0.16
 45   3.2685  13445.86    -0.09    3581.02    -0.06
 46   3.3009  12646.66     0.43    3355.04    -0.36

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.

16QF86    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        21.075    21.077    21.074
ecceobj         0.311     0.311     0.311
incobj         13.708    13.708    13.708
qmin           14.481    14.482    14.480
qmax           27.872    27.801    27.841
amean          21.174    21.124    21.075
amin           20.885    20.871    20.843
amax           21.313    21.244    21.273
emean           0.298     0.296     0.294
emin            0.270     0.266     0.270
emax            0.313     0.313     0.313
imean          15.733    15.813    15.949
imin           15.198    15.199    15.197
imax           17.000    17.129    16.787
excite_mean     0.403     0.403     0.403
fracstop        0.003     0.003     0.004
cjmean          2.965     2.967     2.968

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       250.3     249.8     255.5
kozaiamp         23.8      22.0      25.5