Orbit Fit and Astrometric record for 16LJ106

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: 16LJ106   
# Created Tue Apr  1 01:10:49 2025
# Orbit generated from Bernstein formalism
# Fitting      9 observations of      9
# Arc:  80.87d
# First observation: 2016/03/16
#  Last observation: 2016/06/05
Preliminary a, adot, b, bdot, g, gdot:
  -0.000024   0.029393  -0.000010  -0.001083   0.025332   0.000000
# Chi-squared of fit:     1.12 DOF:     12 RMS:  0.06
# Min/Max residuals:    -0.10    0.13
# Exact a, adot, b, bdot, g, gdot:
  1.618306E-05  2.467260E-02 -2.994036E-07 -1.199998E-03  2.457979E-02 -1.559968E-03
# Covariance matrix:
  4.9383E-13  8.8690E-12 -3.1932E-14  2.0204E-13  2.8268E-12  1.9803E-10
  8.8690E-12  1.9899E-08 -5.0039E-11  4.9984E-10  3.2608E-09 -5.0236E-08
 -3.1932E-14 -5.0039E-11  4.8647E-13 -3.2233E-12 -8.2459E-12  1.1822E-10
  2.0204E-13  4.9984E-10 -3.2233E-12  3.2241E-11  8.1408E-11 -1.3876E-09
  2.8268E-12  3.2608E-09 -8.2459E-12  8.1408E-11  5.4348E-10 -6.3860E-09
  1.9803E-10 -5.0236E-08  1.1822E-10 -1.3876E-09 -6.3860E-09  5.2524E-07
#      lat0       lon0       xBary       yBary       zBary        JD0
    9.566841 -151.850458    0.527170    0.139661   -0.827822  2457464.036129
# Heliocentric elements and errors
Epoch:              2457460.5000  =  2016/03/13
Mean Anomaly:          318.06097 +/-     7.157
Argument of Peri:      156.41062 +/-     9.943
Long of Asc Node:      101.35401 +/-     0.135
Inclination:             9.74600 +/-     0.007
Eccentricity:         0.10256714 +/-    0.0273
Semi-Major Axis:     44.69425795 +/-    0.5234
Time of Perihelion: 2470174.7826 +/-    2158.3
Perihelion:          40.11009591 +/-    1.3063
Aphelion:            49.27842000 +/-    1.3486
Period (y)              298.8036 +/-      5.25
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -36.36521368 +/-    0.0335
Ecliptic Y          -18.86041184 +/-    0.0179
Ecliptic Z            6.76158908 +/-    0.0064
Ecliptic XDOT         0.00142797 +/-    0.0001
Ecliptic YDOT        -0.00235975 +/-    0.0000
Ecliptic ZDOT        -0.00016067 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.51942904 +/-    0.0305
Geocenter to KBO     40.68382795 +/-    0.0386
# Hcoef:  7.25

The following table shows the complete astrometric record for 16LJ106. 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 (16LJ106) followed by the observatory code and reference code for the source of the astrometry.

2016 03  16.53534  13 58 12.21   -01 51 58.7   23.3z 16LJ106   T09  C~89Tk      
2016 03  16.55726  13 58 12.14   -01 51 57.9   23.2z 16LJ106   T09  C~89Tk      
2016 03  16.58177  13 58 12.05   -01 51 57.4   22.9z 16LJ106   T09  C~89Tk      
2016 04  15.50963  13 56 06.95   -01 38 13.0   23.0y 16LJ106   T09  C~89Tk      
2016 04  15.52318  13 56 06.88   -01 38 12.6   23.0y 16LJ106   T09  C~89Tk      
2016 04  15.53670  13 56 06.82   -01 38 12.3   22.6y 16LJ106   T09  C~89Tk      
2016 06  05.36153  13 52 38.75   -01 23 54.7   23.9r 16LJ106   T09  C~89Tk      
2016 06  05.39286  13 52 38.66   -01 23 54.5   23.7r 16LJ106   T09  C~89Tk      
2016 06  05.40348  13 52 38.62   -01 23 54.3   23.8r 16LJ106   T09  C~89Tk      

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    -0.10
     2   0.0001     -1.26     0.01       0.38     0.13
     3   0.0001     -2.70     0.06       0.38    -0.04
     4   0.0821  -2048.43     0.06     113.88     0.00
     5   0.0821  -2049.55    -0.06     113.89     0.01
     6   0.0821  -2050.50    -0.00     113.85    -0.02
     7   0.2213  -5273.93     0.01    -179.56    -0.08
     8   0.2214  -5275.26     0.08    -179.84    -0.01
     9   0.2214  -5275.90    -0.08    -179.87     0.09

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.

16LJ106    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.153    45.841    42.858
ecceobj         0.096     0.167     0.042
incobj          9.746     9.732     9.763
qmin           39.483    37.811    40.706
qmax           49.717    55.033    45.764
amean          44.460    46.189    43.143
amin           44.099    45.779    42.812
amax           44.845    46.650    43.481
emean           0.094     0.166     0.038
emin            0.078     0.154     0.022
emax            0.109     0.180     0.053
imean           7.860     7.836     7.990
imin            7.269     7.324     7.290
imax            8.474     8.481     8.674
excite_mean     0.166     0.215     0.144
fracstop        1.000     1.000     1.000
cjmean          3.074     3.072     3.067

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       185.2     180.9     180.6
kozaiamp        180.0     179.9     180.0