Orbit Fit and Astrometric record for 16SJ105

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: 16SJ105   
# Created Thu Dec  9 02:13:58 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     10 observations of     10
# Arc:   5.22y
# First observation: 2013/09/10
#  Last observation: 2018/12/01
# Chi-squared of fit:     4.00 DOF:     14 RMS:  0.11
# Min/Max residuals:    -0.18    0.21
# Exact a, adot, b, bdot, g, gdot:
  1.472948E-05  2.405262E-02 -3.549532E-06 -6.435858E-03  2.560803E-02 -3.787673E-04
# Covariance matrix:
  1.1199E-12 -6.9484E-13 -1.4264E-13  1.5379E-13 -3.5226E-13 -4.2659E-12
 -6.9484E-13  7.5400E-13  1.8726E-13 -1.9385E-13  6.5431E-13  5.4318E-12
 -1.4264E-13  1.8726E-13  7.9119E-13 -2.4749E-13  1.2081E-13  1.6049E-12
  1.5379E-13 -1.9385E-13 -2.4749E-13  1.2605E-13 -6.9840E-14 -1.7980E-12
 -3.5226E-13  6.5431E-13  1.2081E-13 -6.9840E-14  1.7394E-12  2.3482E-12
 -4.2659E-12  5.4318E-12  1.6049E-12 -1.7980E-12  2.3482E-12  4.9413E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -15.399384   35.923211    0.753825   -0.177502   -0.644834  2456545.877878
# Heliocentric elements and errors
Epoch:              2456546.5000  =  2013/09/11
Mean Anomaly:          220.16487 +/-     0.207
Argument of Peri:        9.72671 +/-     0.201
Long of Asc Node:      171.10841 +/-     0.001
Inclination:            21.38970 +/-     0.000
Eccentricity:         0.05944372 +/-    0.0002
Semi-Major Axis:     37.92859486 +/-    0.0062
Time of Perihelion: 2489687.2516 +/-      50.7
Perihelion:          35.67397815 +/-    0.0098
Aphelion:            40.18321157 +/-    0.0103
Period (y)              233.5922 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           31.47095443 +/-    0.0016
Ecliptic Y           21.87312697 +/-    0.0011
Ecliptic Z          -10.36979034 +/-    0.0005
Ecliptic XDOT        -0.00169449 +/-    0.0000
Ecliptic YDOT         0.00195119 +/-    0.0000
Ecliptic ZDOT        -0.00065249 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.70376497 +/-    0.0014
Geocenter to KBO     39.05029539 +/-    0.0020
# Hcoef:  7.96

The following table shows the complete astrometric record for 16SJ105. 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 (16SJ105) followed by the observatory code and reference code for the source of the astrometry.

2013 09  10.37710  02 34 38.410  -01 04 04.18  24.7g 16SJ105   W84  C~52Zv      
2014 09  24.31584  02 39 39.993  -01 06 35.24  23.8r 16SJ105   W84  C~52Zv      
2016 09  23.29861  02 51 08.812  -00 54 49.84  23.4i 16SJ105   W84  C~52Zv      
2016 09  25.27240  02 51 02.275  -00 56 01.25  24.7g 16SJ105   W84  C~52Zv      
2016 10  27.25910  02 48 46.121  -01 13 58.71  23.7i 16SJ105   W84  C~52Zv      
2016 11  10.26905  02 47 36.997  -01 20 07.68  23.6i 16SJ105   W84  C~52Zv      
2016 11  28.14501  02 46 11.628  -01 25 29.21  24.1r 16SJ105   W84  C~52Zv      
2017 10  29.30760  02 54 22.985  -01 09 04.38  23.7r 16SJ105   W84  C~52Zv      
2018 11  29.20945  02 57 39.031  -01 14 04.28  23.7r 16SJ105   W84  C~52Zv      
2018 12  01.07616  02 57 30.447  -01 14 26.24  24.3g 16SJ105   W84  C~52Zv      

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     0.05       0.00    -0.07
     2   1.0375      0.00    -0.10       0.00     0.14
     3   3.0361      0.00    -0.07       0.00     0.00
     4   3.0415      0.00    -0.01       0.00    -0.11
     5   3.1290      0.00     0.21       0.00     0.16
     6   3.1674      0.00    -0.06       0.00    -0.08
     7   3.2163      0.00    -0.03       0.00    -0.02
     8   4.1340      0.00     0.11       0.00     0.00
     9   5.2179      0.00     0.06       0.00    -0.18
    10   5.2230      0.00    -0.11       0.00     0.20

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.

16SJ105    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        38.076    38.076    38.076
ecceobj         0.054     0.054     0.054
incobj         21.333    21.333    21.333
qmin           34.274    34.246    34.276
qmax           41.583    41.590    41.630
amean          37.840    37.840    37.840
amin           37.539    37.547    37.540
amax           38.146    38.141    38.155
emean           0.070     0.070     0.070
emin            0.048     0.049     0.049
emax            0.091     0.091     0.091
imean          21.435    21.435    21.435
imin           20.270    20.267    20.276
imax           23.051    23.048    23.056
excite_mean     0.372     0.372     0.372
fracstop        1.000     1.000     1.000
cjmean          2.879     2.879     2.879

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       175.8     176.1     175.8
kozaiamp        179.9     179.9     180.0