Orbit Fit and Astrometric record for 16EZ370

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: 16EZ370   
# Created Wed Nov 27 02:10:35 2024
# Orbit generated from Bernstein formalism
# Fitting     27 observations of     27
# Arc:   0.92y
# First observation: 2016/03/04
#  Last observation: 2017/02/02
Preliminary a, adot, b, bdot, g, gdot:
   0.000000   0.031079  -0.000000   0.005512   0.027357   0.000000
# Chi-squared of fit:    25.48 DOF:     48 RMS:  0.17
# Min/Max residuals:    -0.45    0.58
# Exact a, adot, b, bdot, g, gdot:
  1.866363E-05  3.132264E-02  2.625271E-06  5.548195E-03  2.742300E-02  5.825402E-03
# Covariance matrix:
  2.5934E-13  2.3179E-11 -6.2865E-14  3.3237E-12  6.2753E-12  6.3211E-10
  2.3179E-11  3.0330E-08 -6.9146E-11  4.1120E-09  5.3269E-09  7.8088E-07
 -6.2865E-14 -6.9146E-11  2.2133E-13 -9.4606E-12 -1.2265E-11 -1.7821E-09
  3.3237E-12  4.1120E-09 -9.4606E-12  5.5834E-10  7.2431E-10  1.0590E-07
  6.2753E-12  5.3269E-09 -1.2265E-11  7.2431E-10  9.6251E-10  1.3756E-07
  6.3211E-10  7.8088E-07 -1.7821E-09  1.0590E-07  1.3756E-07  2.0112E-05
#      lat0       lon0       xBary       yBary       zBary        JD0
   -9.740088  152.124554   -0.201661   -0.163584   -0.953947  2457451.934399
# Heliocentric elements and errors
Epoch:              2457450.5000  =  2016/03/03
Mean Anomaly:           18.44116 +/-     7.738
Argument of Peri:      275.28412 +/-    20.600
Long of Asc Node:      195.41947 +/-     0.115
Inclination:            13.77600 +/-     0.029
Eccentricity:         0.36717332 +/-    0.1238
Semi-Major Axis:     55.25778653 +/-    6.0783
Time of Perihelion: 2449764.9594 +/-    2965.3
Perihelion:          34.96860183 +/-    7.8503
Aphelion:            75.54697122 +/-   10.7652
Period (y)              410.7697 +/-     67.78
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -32.72378226 +/-    0.0359
Ecliptic Y           17.07566030 +/-    0.0190
Ecliptic Z           -6.16914269 +/-    0.0070
Ecliptic XDOT        -0.00205182 +/-    0.0004
Ecliptic YDOT        -0.00245948 +/-    0.0002
Ecliptic ZDOT         0.00044755 +/-    0.0001
# Distances at JD0 (AU)
Heliocenter to KBO   37.42301994 +/-    0.0326
Geocenter to KBO     36.46573944 +/-    0.0413
# Hcoef:  9.16

The following table shows the complete astrometric record for 16EZ370. 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 (16EZ370) followed by the observatory code and reference code for the source of the astrometry.

2016 03  04.43361  10 02 33.92   +01 36 33.0   25.5i 16EZ370   T09  C~8Djp      
2016 03  04.44826  10 02 33.86   +01 36 33.5   24.7i 16EZ370   T09  C~8Djp      
2016 03  04.46258  10 02 33.80   +01 36 33.5   25.2i 16EZ370   T09  C~8Djp      
2016 03  04.46608  10 02 33.78   +01 36 33.9   24.4i 16EZ370   T09  C~8Djp      
2016 03  07.28619  10 02 20.49   +01 38 09.1   25.6g 16EZ370   T09  C~8Djp      
2016 03  07.31730  10 02 20.33   +01 38 10.3   25.9g 16EZ370   T09  C~8Djp      
2016 03  07.32114  10 02 20.33   +01 38 10.1   25.1g 16EZ370   T09  C~8Djp      
2016 03  07.32499  10 02 20.31   +01 38 10.3   25.2g 16EZ370   T09  C~8Djp      
2016 03  09.29704  10 02 11.17   +01 39 17.5   24.7r 16EZ370   T09  C~8Djp      
2016 03  09.31742  10 02 11.08   +01 39 17.9   24.2r 16EZ370   T09  C~8Djp      
2016 03  09.32069  10 02 11.05   +01 39 18.4   24.8r 16EZ370   T09  C~8Djp      
2016 03  09.32455  10 02 11.06   +01 39 18.2   24.6r 16EZ370   T09  C~8Djp      
2016 03  09.32844  10 02 11.04   +01 39 18.5   24.6r 16EZ370   T09  C~8Djp      
2016 03  09.33236  10 02 10.99   +01 39 18.9   25.2r 16EZ370   T09  C~8Djp      
2016 03  09.34016  10 02 10.97   +01 39 18.9   24.9r 16EZ370   T09  C~8Djp      
2016 03  12.40209  10 01 57.10   +01 41 03.4   24.9z 16EZ370   T09  C~8Djp      
2016 03  12.41665  10 01 57.02   +01 41 04.1   24.0z 16EZ370   T09  C~8Djp      
2016 03  12.43157  10 01 56.98   +01 41 04.6   23.8z 16EZ370   T09  C~8Djp      
2016 03  12.43918  10 01 56.97   +01 41 04.4   24.1z 16EZ370   T09  C~8Djp      
2016 03  12.45077  10 01 56.89   +01 41 05.1   24.3z 16EZ370   T09  C~8Djp      
2016 03  12.45847  10 01 56.85   +01 41 05.1   24.3z 16EZ370   T09  C~8Djp      
2016 03  12.46234  10 01 56.85   +01 41 05.6   24.7z 16EZ370   T09  C~8Djp      
2016 03  12.46618  10 01 56.81   +01 41 05.6   24.2z 16EZ370   T09  C~8Djp      
2016 03  12.47004  10 01 56.79   +01 41 05.7   24.9z 16EZ370   T09  C~8Djp      
2017 02  02.50918  10 12 08.92   +01 01 36.4   25.6r 16EZ370   T09  C~8Djp      
2017 02  02.51810  10 12 08.88   +01 01 36.6   24.9r 16EZ370   T09  C~8Djp      
2017 02  02.52702  10 12 08.82   +01 01 36.9   25.4r 16EZ370   T09  C~8Djp      

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    -0.12       0.00     0.12
     2   0.0000     -1.02     0.03       0.15     0.18
     3   0.0001     -1.86     0.33      -0.16    -0.22
     4   0.0001     -2.28     0.19       0.10     0.03
     5   0.0078   -222.30    -0.04      19.13     0.03
     6   0.0079   -224.97    -0.26      19.41     0.10
     7   0.0079   -224.90     0.11      19.22    -0.12
     8   0.0079   -225.25     0.06      19.30    -0.06
     9   0.0133   -377.18    -0.18      34.01     0.05
    10   0.0134   -378.58     0.00      33.91    -0.20
    11   0.0134   -379.18    -0.34      34.22     0.09
    12   0.0134   -378.97     0.17      34.08    -0.07
    13   0.0134   -379.35     0.09      34.26     0.07
    14   0.0134   -380.19    -0.45      34.37     0.16
    15   0.0134   -380.47    -0.13      34.26    -0.01
    16   0.0218   -611.90    -0.06      58.95    -0.07
    17   0.0219   -613.27    -0.33      59.18     0.05
    18   0.0219   -614.01     0.07      59.44     0.18
    19   0.0219   -614.08     0.58      59.20    -0.12
    20   0.0219   -615.45     0.09      59.43     0.02
    21   0.0220   -616.01     0.11      59.22    -0.25
    22   0.0220   -616.19     0.23      59.69     0.19
    23   0.0220   -616.75    -0.04      59.48    -0.06
    24   0.0220   -617.06    -0.07      59.46    -0.10
    25   0.9174   8813.99     0.07    1075.72     0.01
    26   0.9174   8813.36     0.11    1075.70     0.01
    27   0.9174   8812.41    -0.17    1075.66    -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.