Orbit Fit and Astrometric record for 16GG393

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: 16GG393   
# Created Tue Apr  1 01:10:47 2025
# Orbit generated from Bernstein formalism
# Fitting     30 observations of     30
# Arc:   3.02y
# First observation: 2014/02/27
#  Last observation: 2017/03/07
Preliminary a, adot, b, bdot, g, gdot:
  -0.000040   0.021124  -0.000002  -0.000287   0.022562   0.000000
# Chi-squared of fit:     8.79 DOF:     54 RMS:  0.10
# Min/Max residuals:    -0.23    0.22
# Exact a, adot, b, bdot, g, gdot:
  1.419525E-05  2.111883E-02 -7.661197E-07 -2.880364E-04  2.272204E-02 -1.173812E-03
# Covariance matrix:
  5.4243E-13  1.6756E-15  3.0934E-16 -2.1876E-15  4.5413E-13  3.4394E-12
  1.6756E-15  5.2571E-13  2.6877E-15 -7.4279E-15  6.8185E-13  8.9150E-12
  3.0934E-16  2.6877E-15  3.3077E-13 -1.3482E-13  3.2571E-15  4.9669E-14
 -2.1876E-15 -7.4279E-15 -1.3482E-13  6.4548E-14 -1.0965E-14 -1.4351E-13
  4.5413E-13  6.8185E-13  3.2571E-15 -1.0965E-14  1.3798E-12  1.4360E-11
  3.4394E-12  8.9150E-12  4.9669E-14 -1.4351E-13  1.4360E-11  1.7605E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.334449 -177.853725    0.392723    0.037044   -0.906334  2456716.034048
# Heliocentric elements and errors
Epoch:              2456710.5000  =  2014/02/22
Mean Anomaly:          262.59882 +/-     0.236
Argument of Peri:      212.95716 +/-     0.210
Long of Asc Node:       73.12575 +/-     0.015
Inclination:             2.41186 +/-     0.000
Eccentricity:         0.06302519 +/-    0.0006
Semi-Major Axis:     44.38907564 +/-    0.0093
Time of Perihelion: 2485936.8323 +/-      70.1
Perihelion:          41.59144573 +/-    0.0275
Aphelion:            47.18670555 +/-    0.0279
Period (y)              295.7484 +/-      0.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -44.86521773 +/-    0.0023
Ecliptic Y           -1.28686957 +/-    0.0001
Ecliptic Z            1.79261612 +/-    0.0001
Ecliptic XDOT         0.00022934 +/-    0.0000
Ecliptic YDOT        -0.00254061 +/-    0.0000
Ecliptic ZDOT        -0.00004031 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.91945311 +/-    0.0023
Geocenter to KBO     44.01012361 +/-    0.0023
# Hcoef:  7.57

The following table shows the complete astrometric record for 16GG393. 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 (16GG393) followed by the observatory code and reference code for the source of the astrometry.

2014 02  27.533270 12 11 35.37   +01 17 18.6         16GG393   T09  C~8Sa7      
2014 02  27.547257 12 11 35.30   +01 17 18.9         16GG393   T09  C~8Sa7      
2014 04  22.012043 12 07 59.150  +01 40 26.36  22.6z 16GG393   W84  C~8WkF      
2014 04  22.014905 12 07 59.138  +01 40 26.40  22.6z 16GG393   W84  C~8WkF      
2016 04  02.40035  12 18 06.91   +00 32 51.2   24.1i 16GG393   T09  C~8Sa7      
2016 04  02.41462  12 18 06.86   +00 32 51.6   23.7i 16GG393   T09  C~8Sa7      
2016 04  02.44189  12 18 06.74   +00 32 52.2   23.6i 16GG393   T09  C~8Sa7      
2016 04  02.46633  12 18 06.64   +00 32 52.7   24.0i 16GG393   T09  C~8Sa7      
2016 04  02.49902  12 18 06.50   +00 32 53.8   23.8i 16GG393   T09  C~8Sa7      
2016 04  02.52328  12 18 06.40   +00 32 54.3   23.8i 16GG393   T09  C~8Sa7      
2016 04  04.35452  12 17 58.76   +00 33 42.5   25.3g 16GG393   T09  C~8Sa7      
2016 04  04.39376  12 17 58.59   +00 33 43.6   25.3g 16GG393   T09  C~8Sa7      
2016 04  04.39588  12 17 58.59   +00 33 43.6   25.4g 16GG393   T09  C~8Sa7      
2016 04  04.412943 12 17 58.52   +00 33 44.1         16GG393   T09  C~8Sa7      
2016 04  05.244228 12 17 55.07   +00 34 05.7         16GG393   T09  C~8Sa7      
2016 04  05.552249 12 17 53.78   +00 34 13.7         16GG393   T09  C~8Sa7      
2016 04  08.511551 12 17 41.58   +00 35 30.0   23.7r 16GG393   T09  C~8Sa7      
2016 04  15.374532 12 17 14.11   +00 38 19.6         16GG393   T09  C~8Sa7      
2016 04  15.462024 12 17 13.77   +00 38 21.7         16GG393   T09  C~8Sa7      
2016 06  04.258848 12 15 02.50   +00 50 24.8         16GG393   T09  C~8Sa7      
2016 06  04.340562 12 15 02.41   +00 50 25.3         16GG393   T09  C~8Sa7      
2017 01  23.610249 12 26 27.08   -00 23 52.2         16GG393   T09  C~8Sa7      
2017 01  23.641108 12 26 27.03   -00 23 51.8         16GG393   T09  C~8Sa7      
2017 01  26.62617  12 26 22.31   -00 23 12.6   23.9z 16GG393   T09  C~8Sa7      
2017 01  26.62885  12 26 22.30   -00 23 12.6   23.6z 16GG393   T09  C~8Sa7      
2017 01  26.63153  12 26 22.29   -00 23 12.6   24.3z 16GG393   T09  C~8Sa8      
2017 01  26.64766  12 26 22.27   -00 23 12.3   24.1z 16GG393   T09  C~8Sa8      
2017 01  26.65302  12 26 22.25   -00 23 12.5   23.7z 16GG393   T09  C~8Sa8      
2017 03  07.554011 12 24 23.37   -00 09 04.8         16GG393   T09  C~8Sa8      
2017 03  07.559074 12 24 23.36   -00 09 04.5         16GG393   T09  C~8Sa8      

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     0.10       0.00     0.12
     2   0.0000     -1.08    -0.09      -0.14    -0.04
     3   0.1464  -3527.04     0.00     -15.06     0.03
     4   0.1464  -3527.22    -0.01     -15.10    -0.00
     5   2.0941   6450.88    -0.23    -111.04     0.01
     6   2.0941   6450.03    -0.08    -110.98     0.09
     7   2.0942   6448.14    -0.08    -111.14    -0.04
     8   2.0943   6446.56     0.03    -111.28    -0.15
     9   2.0944   6444.19    -0.07    -111.11     0.06
    10   2.0944   6442.62     0.03    -111.25    -0.05
    11   2.0994   6318.19     0.03    -112.64    -0.09
    12   2.0995   6315.41    -0.05    -112.64    -0.05
    13   2.0996   6315.41     0.10    -112.64    -0.04
    14   2.0996   6314.24     0.11    -112.60     0.02
    15   2.1019   6258.12     0.10    -113.38    -0.12
    16   2.1027   6237.17     0.22    -113.75    -0.08
    17   2.1108   6038.75     0.01    -116.58    -0.05
    18   2.1296   5592.91    -0.07    -124.97    -0.05
    19   2.1299   5587.39     0.04    -125.07     0.01
    20   2.2662   3492.33     0.01    -245.16    -0.02
    21   2.2664   3490.89    -0.14    -245.23     0.19
    22   2.9051  14710.86     0.14    -246.91    -0.00
    23   2.9052  14710.01     0.10    -246.84    -0.00
    24   2.9133  14629.05    -0.03    -239.04     0.17
    25   2.9133  14628.91    -0.09    -239.10     0.11
    26   2.9133  14628.77    -0.15    -239.16     0.04
    27   2.9134  14628.37    -0.06    -239.00     0.16
    28   2.9134  14628.18    -0.10    -239.31    -0.15
    29   3.0226  12646.28     0.06    -171.32    -0.14
    30   3.0227  12646.02     0.14    -171.11     0.07

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.

16GG393    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.089    44.114    44.065
ecceobj         0.066     0.067     0.064
incobj          2.412     2.412     2.412
qmin           40.805    40.769    40.849
qmax           48.055    48.116    47.964
amean          44.314    44.338    44.287
amin           43.968    43.984    43.934
amax           44.671    44.709    44.653
emean           0.061     0.062     0.059
emin            0.045     0.046     0.043
emax            0.076     0.077     0.074
imean           0.900     0.900     0.900
imin            0.138     0.141     0.133
imax            1.428     1.428     1.428
excite_mean     0.063     0.064     0.062
fracstop        1.000     1.000     1.000
cjmean          3.100     3.101     3.100

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       207.2     206.8     207.9
kozaiamp        179.9     179.9     180.0