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 Fri Mar 29 01:18:43 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     50 observations of     50
# Arc:   9.30y
# First observation: 2014/07/01
#  Last observation: 2023/10/19
# Chi-squared of fit:    41.69 DOF:     94 RMS:  0.16
# Min/Max residuals:    -0.66    0.53
# Exact a, adot, b, bdot, g, gdot:
  1.505785E-05  3.660083E-02  1.596819E-06  5.158909E-03  3.713452E-02 -6.899593E-04
# Covariance matrix:
  1.4139E-13 -3.5144E-14  2.0261E-15 -4.8785E-15  7.4936E-14 -1.0932E-13
 -3.5144E-14  3.7525E-14 -7.9054E-15  4.9963E-15  3.5869E-14  9.6228E-14
  2.0261E-15 -7.9054E-15  6.5634E-14 -1.4135E-14 -1.3890E-14 -2.0892E-14
 -4.8785E-15  4.9963E-15 -1.4135E-14  5.5722E-15  3.1037E-15  1.5738E-14
  7.4936E-14  3.5869E-14 -1.3890E-14  3.1037E-15  1.9571E-13  3.5558E-14
 -1.0932E-13  9.6228E-14 -2.0892E-14  1.5738E-14  3.5558E-14  3.1391E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   11.131313  -31.207918    0.771745    0.128430   -0.652419  2456840.059238
# Heliocentric elements and errors
Epoch:              2456840.5000  =  2014/07/02
Mean Anomaly:          190.95202 +/-     0.007
Argument of Peri:      226.80444 +/-     0.002
Long of Asc Node:      275.11888 +/-     0.000
Inclination:            13.67707 +/-     0.000
Eccentricity:         0.31357550 +/-    0.0000
Semi-Major Axis:     21.05698150 +/-    0.0006
Time of Perihelion: 2473413.4598 +/-       1.1
Perihelion:          14.45402791 +/-    0.0006
Aphelion:            27.65993509 +/-    0.0009
Period (y)               96.6279 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           22.76602540 +/-    0.0003
Ecliptic Y          -14.69324867 +/-    0.0002
Ecliptic Z            5.19898778 +/-    0.0001
Ecliptic XDOT         0.00128760 +/-    0.0000
Ecliptic YDOT         0.00236804 +/-    0.0000
Ecliptic ZDOT         0.00036350 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   27.59010791 +/-    0.0002
Geocenter to KBO     26.92915690 +/-    0.0003
# Hcoef:  8.30

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      
2023 10  19.227102 22 47 27.390  +06 49 56.02  22.3w 16QF86    F51  C~7Mov      
2023 10  19.239958 22 47 27.342  +06 49 55.34  22.4w 16QF86    F51  C~7Mov      
2023 10  19.253374 22 47 27.263  +06 49 54.60  22.3w 16QF86    F51  C~7Mov      
2023 10  19.266264 22 47 27.210  +06 49 54.07  22.5w 16QF86    F51  C~7Mov      

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     0.06       0.00     0.15
     2   0.0000      0.00     0.09       0.00    -0.08
     3   0.0001      0.00    -0.06       0.00     0.08
     4   0.0001      0.00     0.03       0.00     0.10
     5   0.0001      0.00    -0.00       0.00    -0.64
     6   0.1364      0.00     0.11       0.00    -0.25
     7   0.1364      0.00    -0.12       0.00     0.11
     8   0.1365      0.00     0.10       0.00    -0.11
     9   0.1365      0.00    -0.10       0.00     0.02
    10   0.1391      0.00    -0.04       0.00     0.02
    11   0.1391      0.00     0.17       0.00     0.15
    12   0.1391      0.00    -0.10       0.00    -0.09
    13   0.1392      0.00     0.13       0.00     0.14
    14   2.0233      0.00    -0.03       0.00     0.04
    15   2.0233      0.00     0.01       0.00     0.01
    16   2.0234      0.00     0.09       0.00    -0.06
    17   2.0234      0.00     0.03       0.00     0.03
    18   2.1456      0.00    -0.26       0.00     0.11
    19   2.1652      0.00     0.08       0.00     0.15
    20   2.1811      0.00    -0.04       0.00    -0.08
    21   2.1890      0.00     0.02       0.00     0.22
    22   2.2381      0.00    -0.07       0.00    -0.00
    23   2.2381      0.00     0.04       0.00     0.16
    24   2.2381      0.00     0.00       0.00     0.22
    25   3.0690      0.00    -0.02       0.00     0.02
    26   3.0690      0.00     0.21       0.00     0.07
    27   3.0691      0.00     0.05       0.00     0.02
    28   3.0772      0.00    -0.25       0.00     0.20
    29   3.0983      0.00     0.08       0.00    -0.01
    30   3.1339      0.00    -0.04       0.00     0.03
    31   3.1456      0.00     0.05       0.00    -0.04
    32   3.1456      0.00     0.11       0.00    -0.09
    33   3.1456      0.00    -0.29       0.00     0.11
    34   3.1457      0.00    -0.05       0.00     0.00
    35   3.1483      0.00    -0.05       0.00    -0.10
    36   3.1483      0.00     0.11       0.00     0.09
    37   3.1483      0.00    -0.07       0.00     0.01
    38   3.1484      0.00    -0.04       0.00    -0.18
    39   3.2028      0.00     0.11       0.00     0.30
    40   3.2028      0.00     0.06       0.00     0.38
    41   3.2028      0.00     0.11       0.00     0.16
    42   3.2029      0.00    -0.04       0.00    -0.07
    43   3.2409      0.00    -0.30       0.00    -0.66
    44   3.2438      0.00    -0.12       0.00    -0.20
    45   3.2685      0.00    -0.07       0.00    -0.08
    46   3.3009      0.00     0.53       0.00    -0.18
    47   9.2996      0.00    -0.06       0.00     0.02
    48   9.2996      0.00     0.14       0.00    -0.02
    49   9.2996      0.00    -0.09       0.00    -0.10
    50   9.2997      0.00     0.04       0.00     0.01

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        21.076    21.076    21.075
ecceobj         0.311     0.311     0.311
incobj         13.708    13.708    13.708
qmin           14.481    14.481    14.481
qmax           27.887    27.894    27.877
amean          21.127    21.230    21.336
amin           21.005    20.949    20.911
amax           21.272    21.822    22.124
emean           0.299     0.291     0.269
emin            0.275     0.265     0.226
emax            0.313     0.313     0.313
imean          15.715    16.077    16.588
imin           15.198    15.198    15.198
imax           16.736    17.183    17.478
excite_mean     0.403     0.402     0.394
fracstop        0.003     0.004     0.007
cjmean          2.966     2.964     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       248.6     257.7     264.1
kozaiamp         21.1      30.8      31.5