Orbit Fit and Astrometric record for 16GB370

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: 16GB370   
# Created Wed Nov 27 02:10:38 2024
# Orbit generated from Bernstein formalism
# Fitting     10 observations of     10
# Arc:  34.89d
# First observation: 2016/03/07
#  Last observation: 2016/04/11
Preliminary a, adot, b, bdot, g, gdot:
   0.000003   0.067052  -0.000004  -0.012323   0.047899   0.000000
# Chi-squared of fit:     6.90 DOF:     14 RMS:  0.15
# Min/Max residuals:    -0.22    0.39
# Exact a, adot, b, bdot, g, gdot:
  2.146330E-05  5.960586E-02 -3.541234E-06 -1.150169E-02  4.621638E-02  1.794531E-02
# Covariance matrix:
  3.8263E-13  6.8908E-11 -6.1132E-14 -8.1672E-12  1.7948E-11  1.5000E-09
  6.8908E-11  2.8346E-07 -1.8113E-10 -3.0507E-08  5.8467E-08  2.4581E-06
 -6.1132E-14 -1.8113E-10  3.7943E-13  1.6338E-11 -3.7819E-11 -1.6990E-09
 -8.1672E-12 -3.0507E-08  1.6338E-11  3.3755E-09 -6.3064E-09 -2.6805E-07
  1.7948E-11  5.8467E-08 -3.7819E-11 -6.3064E-09  1.2155E-08  5.3324E-07
  1.5000E-09  2.4581E-06 -1.6990E-09 -2.6805E-07  5.3324E-07  2.8758E-05
#      lat0       lon0       xBary       yBary       zBary        JD0
   12.991168 -150.889165    0.662389    0.165330   -0.715994  2457455.103509
# Heliocentric elements and errors
Epoch:              2457450.5000  =  2016/03/03
Mean Anomaly:           60.65800 +/-     9.001
Argument of Peri:       38.00532 +/-     3.146
Long of Asc Node:       77.41898 +/-     0.278
Inclination:            16.20559 +/-     0.065
Eccentricity:         0.26521825 +/-    0.0876
Semi-Major Axis:     23.97016538 +/-    1.4766
Time of Perihelion: 2450227.9497 +/-     838.7
Perihelion:          17.61284010 +/-    2.3638
Aphelion:            30.32749066 +/-    2.8108
Period (y)              117.3586 +/-     10.84
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -19.38808973 +/-    0.0439
Ecliptic Y          -10.03821300 +/-    0.0245
Ecliptic Z            4.86404006 +/-    0.0116
Ecliptic XDOT         0.00067888 +/-    0.0003
Ecliptic YDOT        -0.00367045 +/-    0.0002
Ecliptic ZDOT        -0.00042493 +/-    0.0001
# Distances at JD0 (AU)
Heliocenter to KBO   22.36789282 +/-    0.0397
Geocenter to KBO     21.63734883 +/-    0.0516
# Hcoef: 11.25

The following table shows the complete astrometric record for 16GB370. 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 (16GB370) followed by the observatory code and reference code for the source of the astrometry.

2016 03  07.60272  14 06 31.23   +01 00 48.0   25.5g 16GB370   T09  C~89Tf      
2016 03  07.61343  14 06 31.19   +01 00 48.8   26.0g 16GB370   T09  C~89Tf      
2016 03  07.61769  14 06 31.16   +01 00 48.6   25.8g 16GB370   T09  C~89Tf      
2016 03  07.63334  14 06 31.11   +01 00 49.3   25.3g 16GB370   T09  C~89Tf      
2016 03  16.48011  14 05 41.36   +01 08 02.0   24.6z 16GB370   T09  C~89Tf      
2016 03  16.50186  14 05 41.24   +01 08 03.0   23.7z 16GB370   T09  C~89Tf      
2016 03  16.52963  14 05 41.05   +01 08 04.3   24.3z 16GB370   T09  C~89Tf      
2016 04  11.44440  14 02 31.36   +01 28 45.3   24.0i 16GB370   T09  C~89Tf      
2016 04  11.46760  14 02 31.17   +01 28 46.1   24.7i 16GB370   T09  C~89Tf      
2016 04  11.48957  14 02 31.00   +01 28 47.3   24.2i 16GB370   T09  C~89Tf      

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    -0.22       0.00    -0.08
     2   0.0000     -0.84    -0.10       0.54     0.27
     3   0.0000     -1.19    -0.07       0.20    -0.15
     4   0.0001     -2.14     0.39       0.59    -0.04
     5   0.0243   -852.14    -0.12     147.00     0.04
     6   0.0244   -854.17     0.15     147.32     0.05
     7   0.0244   -857.30    -0.03     147.54    -0.09
     8   0.0954  -3956.33    -0.11     323.13     0.03
     9   0.0955  -3959.28     0.01     322.90    -0.16
    10   0.0955  -3962.09     0.10     323.14     0.13

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.