Orbit Fit and Astrometric record for 16RX82

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: 16RX82    
# Created Wed Dec  8 02:13:55 2021
# Orbit generated from Bernstein formalism
# Fitting     13 observations of     13
# Arc:   2.22y
# First observation: 2016/09/08
#  Last observation: 2018/11/27
Preliminary a, adot, b, bdot, g, gdot:
   0.000058   0.028282   0.000007   0.005248   0.026606   0.000000
# Chi-squared of fit:     4.01 DOF:     20 RMS:  0.10
# Min/Max residuals:    -0.19    0.27
# Exact a, adot, b, bdot, g, gdot:
  1.671711E-05  2.818016E-02  2.939051E-06  5.251814E-03  2.636058E-02 -2.592170E-03
# Covariance matrix:
  3.7377E-13 -2.2536E-13  2.2712E-14 -1.1012E-13  6.3279E-13 -8.8646E-12
 -2.2536E-13  2.1202E-12 -9.1087E-14  5.9251E-13  6.4776E-13  5.3167E-11
  2.2712E-14 -9.1087E-14  2.0610E-13 -1.6392E-13  4.0810E-14 -3.1651E-12
 -1.1012E-13  5.9251E-13 -1.6392E-13  4.0548E-13 -1.1724E-13  1.9214E-11
  6.3279E-13  6.4776E-13  4.0810E-14 -1.1724E-13  2.8392E-12 -6.5148E-12
 -8.8646E-12  5.3167E-11 -3.1651E-12  1.9214E-11 -6.5148E-12  1.6870E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
   -8.494453    6.005858    0.343629   -0.140127   -0.939518  2457639.855685
# Heliocentric elements and errors
Epoch:              2457630.5000  =  2016/08/30
Mean Anomaly:          335.67382 +/-     0.261
Argument of Peri:      357.39326 +/-     0.423
Long of Asc Node:       43.26632 +/-     0.002
Inclination:            13.37668 +/-     0.001
Eccentricity:         0.19419529 +/-    0.0009
Semi-Major Axis:     46.74806309 +/-    0.0162
Time of Perihelion: 2465519.3773 +/-      84.6
Perihelion:          37.66980925 +/-    0.0422
Aphelion:            55.82631693 +/-    0.0445
Period (y)              319.6345 +/-      0.17
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           38.29032389 +/-    0.0024
Ecliptic Y            3.68077061 +/-    0.0002
Ecliptic Z           -5.60350031 +/-    0.0004
Ecliptic XDOT        -0.00048925 +/-    0.0000
Ecliptic YDOT         0.00288441 +/-    0.0000
Ecliptic ZDOT         0.00057921 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.87282073 +/-    0.0024
Geocenter to KBO     37.93543706 +/-    0.0024
# Hcoef:  7.40

The following table shows the complete astrometric record for 16RX82. 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 (16RX82) followed by the observatory code and reference code for the source of the astrometry.

2016 09  08.354896 00 35 31.53   -05 24 52.5   23.4r 16RX82    W84  C~55Zq      
2016 09  09.268981 00 35 27.52   -05 25 20.0   22.9i 16RX82    W84  C~55Zq      
2016 09  30.191817 00 33 49.26   -05 35 30.8   23.1r 16RX82    W84  C~55Zq      
2016 10  01.174560 00 33 44.48   -05 35 57.9   22.8i 16RX82    W84  C~55Zq      
2016 10  01.17646  00 33 44.468  -05 35 57.96  23.0g 16RX82    W84  C~55Zq      
2016 10  02.185463 00 33 39.57   -05 36 25.2   23.3r 16RX82    W84  C~55Zq      
2016 10  02.186817 00 33 39.55   -05 36 25.3   23.1i 16RX82    W84  C~55Zq      
2017 09  24.29972  00 39 47.411  -04 37 23.07  23.3i 16RX82    W84  C~55Zq      
2017 09  24.30111  00 39 47.423  -04 37 23.14  23.5r 16RX82    W84  C~55Zq      
2017 09  26.30580  00 39 37.765  -04 38 20.36  22.8i 16RX82    W84  C~55Zq      
2017 10  17.24068  00 37 56.550  -04 47 25.32  23.4r 16RX82    W84  C~55Zq      
2018 10  28.20932  00 42 36.415  -03 55 34.74  23.1i 16RX82    W84  C~55Zq      
2018 11  27.08747  00 40 49.596  -04 00 45.69  23.6g 16RX82    W84  C~55Zq      

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     0.04
     2   0.0025    -65.88    -0.07      -1.44    -0.03
     3   0.0598  -1654.93    -0.01      20.44     0.03
     4   0.0625  -1731.19    -0.05      23.87    -0.09
     5   0.0625  -1731.38    -0.09      23.89    -0.08
     6   0.0652  -1809.31     0.19      27.89     0.02
     7   0.0652  -1809.62    -0.02      27.91     0.04
     8   1.0430   4642.65    -0.19    1091.80    -0.03
     9   1.0430   4642.79     0.06    1091.67    -0.17
    10   1.0485   4487.47     0.10    1096.78     0.27
    11   1.1058   2882.01     0.04    1199.90     0.05
    12   2.1351   7965.38     0.09    2383.29    -0.02
    13   2.2169   6373.80    -0.09    2736.56    -0.04

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.

16RX82    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        47.340    47.378    47.302
ecceobj         0.203     0.204     0.203
incobj         13.336    13.337    13.336
qmin           36.692    36.668    36.693
qmax           57.792    57.791    57.642
amean          46.982    47.018    46.948
amin           46.570    46.604    46.539
amax           47.495    47.532    47.454
emean           0.201     0.202     0.201
emin            0.185     0.187     0.185
emax            0.218     0.218     0.216
imean          12.129    12.129    12.128
imin           11.543    11.539    11.551
imax           12.789    12.789    12.781
excite_mean     0.291     0.291     0.291
fracstop        1.000     1.000     1.000
cjmean          3.033     3.034     3.033

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       171.4     171.7     171.0
kozaiamp        180.0     180.0     180.0