Orbit Fit and Astrometric record for 16RJ82

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: 16RJ82    
# Created Mon Dec  6 02:13:51 2021
# Orbit generated from Bernstein formalism
# Fitting     13 observations of     13
# Arc:   4.08y
# First observation: 2014/10/28
#  Last observation: 2018/11/28
Preliminary a, adot, b, bdot, g, gdot:
   0.000019   0.024430   0.000096  -0.010124   0.026995   0.000000
# Chi-squared of fit:     7.77 DOF:     20 RMS:  0.14
# Min/Max residuals:    -0.31    0.27
# Exact a, adot, b, bdot, g, gdot:
  1.488729E-05  2.421287E-02 -7.350477E-06 -9.964899E-03  2.606197E-02 -3.093555E-03
# Covariance matrix:
  4.7607E-13 -3.5643E-13 -3.0145E-14  8.2802E-14 -9.5486E-14 -2.4089E-12
 -3.5643E-13  6.5741E-13 -1.6562E-15 -1.9456E-13 -6.4801E-14  6.2213E-12
 -3.0145E-14 -1.6562E-15  3.9978E-13 -1.3660E-13  1.4625E-13 -7.2255E-15
  8.2802E-14 -1.9456E-13 -1.3660E-13  1.3108E-13 -1.5393E-14 -2.0453E-12
 -9.5486E-14 -6.4801E-14  1.4625E-13 -1.5393E-14  5.7879E-13 -6.4056E-13
 -2.4089E-12  6.2213E-12 -7.2255E-15 -2.0453E-12 -6.4056E-13  6.5320E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -53.632664  -37.539241   -0.945494   -0.249943   -0.184273  2456958.634358
# Heliocentric elements and errors
Epoch:              2456950.5000  =  2014/10/20
Mean Anomaly:          272.97818 +/-     0.068
Argument of Peri:      353.54553 +/-     0.052
Long of Asc Node:       79.76571 +/-     0.001
Inclination:            55.89369 +/-     0.000
Eccentricity:         0.09772081 +/-    0.0003
Semi-Major Axis:     38.39601679 +/-    0.0044
Time of Perihelion: 2477956.9825 +/-      16.0
Perihelion:          34.64392678 +/-    0.0124
Aphelion:            42.14810681 +/-    0.0127
Period (y)              237.9236 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           18.86074856 +/-    0.0005
Ecliptic Y          -13.30057031 +/-    0.0004
Ecliptic Z          -30.89703588 +/-    0.0009
Ecliptic XDOT         0.00072421 +/-    0.0000
Ecliptic YDOT         0.00264310 +/-    0.0000
Ecliptic ZDOT        -0.00035893 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.56500788 +/-    0.0008
Geocenter to KBO     38.37008924 +/-    0.0011
# Hcoef:  7.68

The following table shows the complete astrometric record for 16RJ82. 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 (16RJ82) followed by the observatory code and reference code for the source of the astrometry.

2014 10  28.13358  23 54 33.171  -61 56 43.56  24.3g 16RJ82    W84  C~55Zo      
2014 10  28.13496  23 54 33.183  -61 56 43.64  23.6r 16RJ82    W84  C~55Zo      
2014 10  28.13631  23 54 33.217  -61 56 43.80  23.1i 16RJ82    W84  C~55Zp      
2016 09  01.40493  00 26 37.571  -60 41 20.14  23.0i 16RJ82    W84  C~55Zp      
2016 09  08.12116  00 25 38.390  -60 46 01.21  23.8r 16RJ82    W84  C~55Zp      
2016 09  08.12253  00 25 38.351  -60 46 01.72  23.2z 16RJ82    W84  C~55Zp      
2016 09  09.26666  00 25 27.910  -60 46 43.85  24.0g 16RJ82    W84  C~55Zp      
2016 11  06.09204  00 16 36.361  -60 41 49.72  23.1r 16RJ82    W84  C~55Zp      
2016 11  06.09343  00 16 36.373  -60 41 49.58  23.5i 16RJ82    W84  C~55Zp      
2017 09  24.20726  00 34 11.164  -60 11 13.78  23.9r 16RJ82    W84  C~55Zp      
2017 09  24.21002  00 34 11.106  -60 11 13.55  24.3g 16RJ82    W84  C~55Zp      
2018 11  28.12418  00 36 04.732  -58 59 11.21  23.5r 16RJ82    W84  C~55Zp      
2018 11  28.12555  00 36 04.738  -58 59 11.17  24.2g 16RJ82    W84  C~55Zp      

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    -0.04       0.00     0.27
     2   0.0000      0.01    -0.01      -0.12     0.06
     3   0.0000      0.08     0.08      -0.40    -0.31
     4   1.8461  12929.49    -0.16   -6754.17    -0.11
     5   1.8644  12430.44     0.19   -6609.66     0.12
     6   1.8644  12429.86    -0.28   -6609.78    -0.03
     7   1.8676  12347.49     0.14   -6579.66    -0.10
     8   2.0259   9944.65    -0.09   -3481.69     0.06
     9   2.0259   9944.82     0.08   -3481.66    -0.01
    10   2.9078  16493.60     0.04   -8173.04    -0.14
    11   2.9078  16493.50     0.11   -8172.56     0.22
    12   4.0848  20425.25    -0.03   -6116.70     0.04
    13   4.0849  20425.31    -0.02   -6116.71    -0.07

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.

16RJ82    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        38.652    38.665    38.638
ecceobj         0.098     0.098     0.098
incobj         55.938    55.938    55.938
qmin           34.114    34.166    33.972
qmax           43.227    43.168    43.383
amean          38.572    38.569    38.547
amin           38.278    38.273    38.265
amax           38.872    38.865    38.851
emean           0.101     0.099     0.102
emin            0.091     0.090     0.091
emax            0.112     0.111     0.117
imean          54.431    54.440    54.429
imin           54.203    54.211    54.203
imax           54.666    54.674    54.659
excite_mean     0.820     0.820     0.820
fracstop        1.000     1.000     1.000
cjmean          2.090     2.090     2.090

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       117.5     116.1     120.8
kozaiamp        180.0     180.0     179.9