Orbit Fit and Astrometric record for 16TA95

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: 16TA95    
# Created Fri Dec  3 02:13:56 2021
# Orbit generated from Bernstein formalism
# Fitting     24 observations of     24
# Arc:   4.10y
# First observation: 2014/09/30
#  Last observation: 2018/11/07
Preliminary a, adot, b, bdot, g, gdot:
   0.000198   0.036066  -0.000031  -0.005223   0.028947   0.000000
# Chi-squared of fit:    11.84 DOF:     42 RMS:  0.12
# Min/Max residuals:    -0.30    0.39
# Exact a, adot, b, bdot, g, gdot:
  1.976076E-05  3.612508E-02 -2.803862E-06 -5.214231E-03  2.856243E-02  6.978534E-04
# Covariance matrix:
  3.2213E-13 -1.3991E-13 -1.8209E-14  1.1109E-14  1.0776E-13 -5.2239E-13
 -1.3991E-13  2.3375E-13  1.2775E-14 -3.0553E-14  7.3060E-14  1.6046E-12
 -1.8209E-14  1.2775E-14  2.1915E-13 -7.3765E-14 -1.7517E-14  9.8314E-14
  1.1109E-14 -3.0553E-14 -7.3765E-14  3.7979E-14 -9.9979E-15 -2.4439E-13
  1.0776E-13  7.3060E-14 -1.7517E-14 -9.9979E-15  2.3879E-13  6.2276E-13
 -5.2239E-13  1.6046E-12  9.8314E-14 -2.4439E-13  6.2276E-13  1.2853E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -24.749490   23.680335    0.292815   -0.401838   -0.872063  2456930.755398
# Heliocentric elements and errors
Epoch:              2456930.5000  =  2014/09/30
Mean Anomaly:            0.42521 +/-     0.005
Argument of Peri:      250.37500 +/-     0.017
Long of Asc Node:      133.21600 +/-     0.001
Inclination:            25.47037 +/-     0.000
Eccentricity:         0.48319999 +/-    0.0001
Semi-Major Axis:     69.43002198 +/-    0.0110
Time of Perihelion: 2456680.9149 +/-       3.1
Perihelion:          35.88143576 +/-    0.0077
Aphelion:           102.97860820 +/-    0.0171
Period (y)              578.5344 +/-      0.14
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           30.11221201 +/-    0.0005
Ecliptic Y           12.88941677 +/-    0.0002
Ecliptic Z          -14.65755052 +/-    0.0003
Ecliptic XDOT        -0.00153137 +/-    0.0000
Ecliptic YDOT         0.00310694 +/-    0.0000
Ecliptic ZDOT        -0.00048179 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.88490162 +/-    0.0004
Geocenter to KBO     35.01103023 +/-    0.0006
# Hcoef:  7.34

The following table shows the complete astrometric record for 16TA95. 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 (16TA95) followed by the observatory code and reference code for the source of the astrometry.

2014 09  30.25462  02 04 17.600  -13 49 43.19  23.4g 16TA95    W84  C~55aH      
2014 11  03.28160  02 01 26.569  -14 07 50.56  22.2z 16TA95    W84  C~55aH      
2014 11  21.23269  01 59 59.093  -14 11 07.70  22.8i 16TA95    W84  C~55aH      
2014 11  21.23407  01 59 59.085  -14 11 07.69  23.3g 16TA95    W84  C~55aH      
2014 12  16.16982  01 58 28.058  -14 07 13.67  23.0r 16TA95    W84  C~55aH      
2014 12  24.14389  01 58 10.048  -14 03 57.45  22.8i 16TA95    W84  C~55aH      
2016 09  08.31048  02 22 10.710  -12 31 40.14  23.0r 16TA95    W84  C~55aH      
2016 09  08.31184  02 22 10.717  -12 31 40.29  22.5i 16TA95    W84  C~55aH      
2016 09  08.31321  02 22 10.701  -12 31 40.33  24.1g 16TA95    W84  C~55aH      
2016 10  08.22812  02 20 15.950  -12 53 53.08  23.1r 16TA95    807  C~2AEF      
2016 10  09.28919  02 20 10.894  -12 54 33.96  22.7r 16TA95    807  C~2AEF      
2016 11  19.23003  02 16 42.716  -13 10 37.64  22.3z 16TA95    W84  C~55aH      
2016 12  07.20257  02 15 25.202  -13 09 53.00  22.9i 16TA95    W84  C~55aH      
2016 12  25.13893  02 14 31.836  -13 04 05.85  23.1r 16TA95    W84  C~55aH      
2016 12  25.14030  02 14 31.841  -13 04 05.79  23.5g 16TA95    W84  C~55aH      
2017 10  13.31554  02 28 06.729  -12 24 49.81  23.0z 16TA95    W84  C~55aH      
2017 10  13.31691  02 28 06.729  -12 24 50.03  23.1r 16TA95    W84  C~55aH      
2017 12  23.14773  02 22 45.471  -12 34 02.91  22.7i 16TA95    W84  C~55aH      
2017 12  23.14910  02 22 45.472  -12 34 02.90  23.0r 16TA95    W84  C~55aH      
2017 12  23.15047  02 22 45.444  -12 34 02.79  22.9g 16TA95    W84  C~55aH      
2018 10  19.31239  02 35 48.960  -11 55 17.05  23.2r 16TA95    W84  C~55aH      
2018 10  19.31375  02 35 48.953  -11 55 17.15  23.7g 16TA95    W84  C~55aH      
2018 10  21.21478  02 35 39.384  -11 56 19.09  21.3z 16TA95    W84  C~55aH      
2018 11  07.25771  02 34 10.774  -12 03 39.87  22.8i 16TA95    W84  C~55aH      

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    -0.02
     2   0.0932  -2715.62    -0.09     -78.07    -0.18
     3   0.1423  -3970.38     0.01     211.80    -0.04
     4   0.1423  -3970.48    -0.01     211.86    -0.02
     5   0.2106  -5114.33    -0.04     919.59     0.02
     6   0.2324  -5285.48     0.05    1198.81    -0.04
     7   1.9413  16303.95     0.10   -1689.49     0.01
     8   1.9413  16303.98     0.22   -1689.67    -0.13
     9   1.9413  16303.75     0.06   -1689.61    -0.04
    10   2.0232  14226.13    -0.30   -2261.02     0.39
    11   2.0261  14141.72    -0.13   -2269.82     0.36
    12   2.1382  10952.08     0.20   -1974.64     0.04
    13   2.1874   9922.29    -0.04   -1495.32    -0.03
    14   2.2365   9335.20    -0.06    -873.87    -0.05
    15   2.2365   9335.29     0.05    -873.85    -0.08
    16   3.0364  21300.35    -0.07   -3378.35     0.14
    17   3.0364  21300.26    -0.04   -3378.55    -0.06
    18   3.2304  16719.03     0.08   -2021.53    -0.05
    19   3.2304  16719.05     0.13   -2021.52    -0.10
    20   3.2304  16718.71    -0.17   -2021.26     0.11
    21   4.0522  28324.33    -0.01   -4482.57    -0.12
    22   4.0522  28324.19    -0.03   -4482.62    -0.17
    23   4.0574  28167.79    -0.02   -4482.42     0.07
    24   4.1040  26775.51     0.07   -4359.23    -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.

16TA95    quality flag:3

Type:       7:2EEEEE  7:2EEEEE  7:2EEEEE

axisobj        70.602    70.637    70.567
ecceobj         0.492     0.492     0.492
incobj         25.446    25.446    25.446
qmin           35.147    34.075    35.338
qmax          105.522   106.540   105.292
amean          69.408    69.408    69.408
amin           68.420    68.379    68.331
amax           70.833    70.815    70.793
emean           0.475     0.482     0.469
emin            0.461     0.465     0.455
emax            0.492     0.508     0.492
imean          24.606    24.021    25.028
imin           23.715    22.349    23.937
imax           25.074    24.794    25.485
excite_mean     0.632     0.631     0.632
fracstop        1.000     1.000     1.000
cjmean          2.863     2.863     2.863

libcent 0       179.4     180.2     179.3
libamp  0       103.2     110.0      96.6
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       269.3     281.1     262.4
kozaiamp         21.7      35.6      13.6