Orbit Fit and Astrometric record for 16TZ94

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: 16TZ94    
# Created Fri Dec  3 02:13:56 2021
# Orbit generated from Bernstein formalism
# Fitting     11 observations of     13
# Arc:   3.98y
# First observation: 2014/11/21
#  Last observation: 2018/11/15
Preliminary a, adot, b, bdot, g, gdot:
   0.000030   0.023116  -0.000011  -0.001233   0.024030   0.000000
# Chi-squared of fit:     4.35 DOF:     16 RMS:  0.11
# Min/Max residuals:    -0.24    0.21
# Exact a, adot, b, bdot, g, gdot:
  1.476331E-05  2.335095E-02 -4.143946E-07 -1.237739E-03  2.399361E-02  3.408780E-03
# Covariance matrix:
  2.8961E-13 -2.6992E-13 -2.5278E-15  9.1141E-15 -2.2419E-14 -2.1217E-12
 -2.6992E-13  9.7595E-13  2.1401E-14 -4.8590E-14 -7.4092E-14  1.0666E-11
 -2.5278E-15  2.1401E-14  2.5496E-13 -9.7021E-14 -2.6191E-14  2.1840E-13
  9.1141E-15 -4.8590E-14 -9.7021E-14  7.9875E-14  8.6360E-15 -5.6991E-13
 -2.2419E-14 -7.4092E-14 -2.6191E-14  8.6360E-15  5.6015E-13 -7.2137E-14
 -2.1217E-12  1.0666E-11  2.1840E-13 -5.6991E-13 -7.2137E-14  1.2776E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
  -24.468512   23.894995   -0.560695   -0.337011   -0.741057  2456982.733468
# Heliocentric elements and errors
Epoch:              2456980.5000  =  2014/11/19
Mean Anomaly:           66.75086 +/-     0.054
Argument of Peri:      178.95767 +/-     0.038
Long of Asc Node:      121.63091 +/-     0.002
Inclination:            24.16735 +/-     0.000
Eccentricity:         0.15998887 +/-    0.0005
Semi-Major Axis:     44.17501813 +/-    0.0121
Time of Perihelion: 2437095.8512 +/-      13.8
Perihelion:          37.10750688 +/-    0.0244
Aphelion:            51.24252938 +/-    0.0263
Period (y)              293.6117 +/-      0.12
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           35.19751165 +/-    0.0011
Ecliptic Y           16.20989152 +/-    0.0005
Ecliptic Z          -17.26272312 +/-    0.0005
Ecliptic XDOT        -0.00081334 +/-    0.0000
Ecliptic YDOT         0.00255086 +/-    0.0000
Ecliptic ZDOT        -0.00028956 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.42201102 +/-    0.0009
Geocenter to KBO     41.67776728 +/-    0.0013
# Hcoef:  7.17

The following table shows the complete astrometric record for 16TZ94. 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 (16TZ94) followed by the observatory code and reference code for the source of the astrometry.

2014 11  21.23269  02 04 36.298  -13 29 42.14  23.4i 16TZ94    W84  C~55aG      
2014 11  21.23543  02 04 36.282  -13 29 42.12  23.7r 16TZ94    W84  C~55aG      
2014 11  21.23681  02 04 36.256  -13 29 42.25  23.7g 16TZ94    W84  C~55aG      
2014 12  15.17297  02 03 12.928  -13 27 00.37  22.7i 16TZ94    W84  C~55aG      
2014 12  16.16845  02 03 10.306  -13 26 43.80  23.7r 16TZ94    W84  C~55aG      
2015 11  02.15531  02 11 13.681  -13 00 06.28  23.5r 16TZ94    W84  C~55aG      
2016 09  08.31048  02 19 57.271  -12 04 49.42  23.9r 16TZ94    W84  C~55aG      
2016 09  08.31184  02 19 57.267  -12 04 49.78  23.5i 16TZ94    W84  C~55aG      
2016 10  08.22812  02 18 11.454  -12 23 14.71  23.6r 16TZ94    807  C~2AEF      
2016 10  09.28919  02 18 06.864  -12 23 48.56  23.5r 16TZ94    807  C~2AEF      
2016 12  25.14716  02 13 01.501  -12 32 00.66  23.2r 16TZ94    W84  C~55aG      
2017 11  01.21377  02 21 27.578  -12 06 55.39  23.1z 16TZ94    W84  C~55aG      
2018 11  15.26039  02 25 25.189  -11 43 31.82  22.7i 16TZ94    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     0.13       0.00    -0.08
     2   0.0000     -0.21     0.08       0.11    -0.03
     3   0.0000     -0.61    -0.24       0.13    -0.04
     4   0.0655  -1067.81    -0.18     604.13     0.07
     5   0.0683  -1097.13     0.13     633.76     0.01
     6   0.9471   6045.14     0.21    -543.36     0.08
     7   1.7990  14419.11     0.02    -424.87     0.20
     8   1.7990  14418.92    -0.10    -425.18    -0.08
     9   1.8809  12553.10 (  -0.21)   -844.41 (   0.58)
    10   1.8838  12477.72 (  -0.41)   -849.66 (   0.80)
    11   2.0942   8148.11    -0.08     414.93    -0.10
    12   2.9459  15597.01    -0.02   -1057.22    -0.05
    13   3.9836  19382.70     0.04   -1128.89     0.01

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.

16TZ94    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        44.597    44.634    44.559
ecceobj         0.165     0.166     0.163
incobj         24.159    24.159    24.159
qmin           35.833    35.850    35.889
qmax           53.207    53.201    53.137
amean          44.311    44.314    44.278
amin           43.935    43.938    43.901
amax           44.747    44.752    44.749
emean           0.171     0.171     0.169
emin            0.152     0.154     0.153
emax            0.189     0.189     0.187
imean          22.422    22.389    22.423
imin           21.869    21.843    21.886
imax           22.998    22.935    22.928
excite_mean     0.418     0.418     0.417
fracstop        1.000     1.000     1.000
cjmean          2.889     2.890     2.890

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       187.8     187.0     189.6
kozaiamp        180.0     180.0     180.0