Orbit Fit and Astrometric record for 16FC60

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: 16FC60    
# Created Fri Mar 29 01:18:39 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     31 observations of     31
# Arc:  19.19y
# First observation: 2002/02/13
#  Last observation: 2021/04/22
# Chi-squared of fit:    59.76 DOF:     56 RMS:  0.25
# Min/Max residuals:    -0.69    0.84
# Exact a, adot, b, bdot, g, gdot:
  1.744007E-05  3.170063E-02 -1.788039E-06 -3.851474E-03  2.857785E-02 -3.542233E-03
# Covariance matrix:
  4.7334E-13 -6.5092E-14 -1.4947E-14  4.9829E-15 -4.6954E-14 -5.7990E-14
 -6.5092E-14  1.5523E-14  5.2283E-15 -1.6923E-15  5.8659E-15  1.9877E-14
 -1.4947E-14  5.2283E-15  3.4001E-13 -2.3757E-14 -2.3547E-15  8.0409E-15
  4.9829E-15 -1.6923E-15 -2.3757E-14  2.0271E-15  1.4198E-16 -2.5403E-15
 -4.6954E-14  5.8659E-15 -2.3547E-15  1.4198E-16  1.2653E-13 -3.9660E-15
 -5.7990E-14  1.9877E-14  8.0409E-15 -2.5403E-15 -3.9660E-15  3.0068E-14
#      lat0       lon0       xBary       yBary       zBary        JD0
   -3.559062  155.488263    0.184312   -0.060164   -0.965908  2452318.820542
# Heliocentric elements and errors
Epoch:              2452318.5000  =  2002/02/13
Mean Anomaly:          330.40220 +/-     0.006
Argument of Peri:      249.67999 +/-     0.008
Long of Asc Node:      308.71578 +/-     0.000
Inclination:             7.73193 +/-     0.000
Eccentricity:         0.19016907 +/-    0.0000
Semi-Major Axis:     42.49805168 +/-    0.0026
Time of Perihelion: 2460638.2247 +/-       8.8
Perihelion:          34.41623651 +/-    0.0025
Aphelion:            50.57986685 +/-    0.0034
Period (y)              277.0523 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -32.58027638 +/-    0.0004
Ecliptic Y           15.06374806 +/-    0.0002
Ecliptic Z           -2.17226984 +/-    0.0000
Ecliptic XDOT        -0.00093947 +/-    0.0000
Ecliptic YDOT        -0.00291410 +/-    0.0000
Ecliptic ZDOT        -0.00034699 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.95990432 +/-    0.0004
Geocenter to KBO     34.99223234 +/-    0.0004
# Hcoef:  7.39

The following table shows the complete astrometric record for 16FC60. 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 (16FC60) followed by the observatory code and reference code for the source of the astrometry.

2002 02  13.319799 10 23 56.44   +06 11 09.6   22.7r 16FC60    645  C~5z86      
2002 02  13.320628 10 23 56.44   +06 11 09.8   22.4i 16FC60    645  C~5z86      
2002 02  13.323116 10 23 56.42   +06 11 09.7   23.6g 16FC60    645  C~5z86      
2010 12  12.529216 11 25 44.33   -02 01 07.1   23.3g 16FC60    T14  C~5z86      
2010 12  31.503901 11 25 45.34   -02 05 05.0   22.5i 16FC60    T14  C~5z86      
2010 12  31.510900 11 25 45.33   -02 05 05.1         16FC60    T14  C~5z86      
2010 12  31.518231 11 25 45.32   -02 05 05.1   23.6g 16FC60    T14  C~5z86      
2010 12  31.523993 11 25 45.31   -02 05 05.2         16FC60    T14  C~5z86      
2013 04  02.198010 11 33 01.24   -03 26 10.9   21.7z 16FC60    W84  C~5z86      
2013 04  02.199511 11 33 01.23   -03 26 10.8   22.1z 16FC60    W84  C~5z86      
2015 12  27.328936 11 59 30.30   -06 38 25.8   22.1z 16FC60    W84  C~5z86      
2016 03  03.341969 11 56 27.01   -06 31 02.4   22.5i 16FC60    W84  C~5z86      
2016 03  30.18968  11 54 04.67   -06 16 58.4   24.2V 16FC60    W84  C~1qoK      
2016 03  30.19662  11 54 04.68   -06 16 58.5         16FC60    W84  C~1qoK      
2016 03  30.20356  11 54 04.67   -06 16 58.3         16FC60    W84  C~1qoK      
2016 03  31.15051  11 53 59.66   -06 16 25.4         16FC60    W84  C~1qoK      
2016 03  31.15745  11 53 59.66   -06 16 25.5         16FC60    W84  C~1qoK      
2016 03  31.16439  11 53 59.67   -06 16 25.5         16FC60    W84  C~1qoK      
2016 04  01.16488  11 53 54.40   -06 15 51.1         16FC60    W84  C~1qoK      
2016 04  01.17182  11 53 54.39   -06 15 51.3         16FC60    W84  C~1qoK      
2016 04  01.17876  11 53 54.39   -06 15 51.1         16FC60    W84  C~1qoK      
2017 03  01.270624 12 03 41.35   -07 28 08.4   23.5g 16FC60    W84  C~5z86      
2017 03  02.240885 12 03 36.52   -07 27 43.8   23.0r 16FC60    W84  C~5z86      
2018 05  10.981829 12 05 07.92   -07 46 48.0   23.3V 16FC60    W84  C~5z86      
2018 05  11.977828 12 05 04.81   -07 46 20.2   23.2V 16FC60    W84  C~5z86      
2018 05  16.023385 12 04 53.10   -07 44 31.5   23.4g 16FC60    W84  C~5z86      
2019 02  04.309612 12 19 36.40   -09 25 54.6   22.7r 16FC60    W84  C~5z86      
2019 02  13.363969 12 19 05.75   -09 24 23.9         16FC60    W84  C~5z86      
2019 02  17.272435 12 18 50.46   -09 23 26.9   22.2z 16FC60    W84  C~5z86      
2019 03  02.305558 12 17 52.17   -09 19 10.4   22.4z 16FC60    W84  C~5z86      
2021 04  22.059983 12 27 48.88   -10 42 28.6   22.5i 16FC60    W84  C~5z86      

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    -0.07
     2   0.0000      0.00     0.06       0.00     0.10
     3   0.0000      0.00    -0.04       0.00    -0.06
     4   8.8274      0.00     0.04       0.00    -0.06
     5   8.8794      0.00    -0.01       0.00     0.02
     6   8.8794      0.00    -0.05       0.00    -0.04
     7   8.8794      0.00    -0.08       0.00     0.01
     8   8.8794      0.00    -0.14       0.00    -0.06
     9  11.1318      0.00    -0.08       0.00    -0.13
    10  11.1318      0.00    -0.12       0.00    -0.08
    11  13.8672      0.00     0.07       0.00    -0.15
    12  14.0507      0.00    -0.13       0.00     0.02
    13  14.1242      0.00    -0.69       0.00     0.36
    14  14.1242      0.00     0.02       0.00     0.02
    15  14.1243      0.00     0.42       0.00    -0.01
    16  14.1268      0.00    -0.48       0.00     0.62
    17  14.1269      0.00     0.07       0.00     0.28
    18  14.1269      0.00     0.77       0.00     0.04
    19  14.1296      0.00    -0.11       0.00     0.28
    20  14.1296      0.00     0.29       0.00    -0.15
    21  14.1297      0.00     0.84       0.00    -0.19
    22  15.0444      0.00    -0.23       0.00    -0.04
    23  15.0470      0.00    -0.19       0.00    -0.17
    24  16.2373      0.00    -0.03       0.00    -0.05
    25  16.2400      0.00    -0.16       0.00    -0.05
    26  16.2511      0.00    -0.05       0.00    -0.00
    27  16.9746      0.00    -0.02       0.00    -0.01
    28  16.9994      0.00     0.30       0.00    -0.43
    29  17.0101      0.00    -0.02       0.00     0.01
    30  17.0458      0.00    -0.09       0.00     0.04
    31  19.1861      0.00    -0.26       0.00    -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.

16FC60    quality flag:3

Type:          5:3EE     5:3EE     5:3EE

axisobj        42.174    42.174    42.174
ecceobj         0.185     0.185     0.185
incobj          7.751     7.751     7.751
qmin           33.638    33.655    33.588
qmax           51.525    51.495    51.485
amean          42.327    42.327    42.328
amin           41.906    41.908    41.905
amax           42.830    42.830    42.830
emean           0.184     0.184     0.184
emin            0.158     0.158     0.158
emax            0.204     0.204     0.204
imean           9.657     9.664     9.658
imin            8.909     8.957     8.873
imax           10.659    10.658    10.660
excite_mean     0.249     0.249     0.249
fracstop        1.000     1.000     1.000
cjmean          3.008     3.008     3.008

libcent 0       180.6     181.0     182.7
libamp  0        75.8      75.8      76.4
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       183.9     183.4     184.5
kozaiamp        180.0     180.0     180.0