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: 16GU392
# Created Wed Nov 27 02:10:38 2024
# Orbit generated from Bernstein formalism
# Fitting 7 observations of 7
# Arc: 6.10d
# First observation: 2016/04/02
# Last observation: 2016/04/08
# WARNING Fitting with energy constraint
# WARNING and with gdot fixed = 0
# WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution
# Chi-squared of fit: 2.51 DOF: 10 RMS: 0.11
# Min/Max residuals: -0.15 0.26
# Exact a, adot, b, bdot, g, gdot:
1.412660E-05 1.765551E-02 -1.310091E-07 7.472509E-05 2.065154E-02 0.000000E+00
# Covariance matrix:
3.0439E-11 3.7994E-08 8.9378E-15 6.8075E-11 6.1818E-09 0.0000E+00
3.7994E-08 4.8161E-05 1.1319E-11 8.6211E-08 7.8286E-06 0.0000E+00
8.9378E-15 1.1319E-11 4.1270E-13 -3.2005E-11 1.8401E-12 0.0000E+00
6.8075E-11 8.6211E-08 -3.2005E-11 5.2125E-09 1.4015E-08 0.0000E+00
6.1818E-09 7.8286E-06 1.8401E-12 1.4015E-08 1.2727E-06 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 1.1590E-04
# lat0 lon0 xBary yBary zBary JD0
0.463772 -176.249239 -0.156492 0.008097 -0.983211 2457480.907299
# Heliocentric elements and errors
Epoch: 2457480.5000 = 2016/04/02
Mean Anomaly: 177.39675 +/- 60.042
Argument of Peri: 244.34792 +/- 41.998
Long of Asc Node: 121.81273 +/- 23.299
Inclination: 0.51420 +/- 0.111
Eccentricity: 0.07979503 +/- 0.5718
Semi-Major Axis: 45.76158811 +/- 21.7849
Time of Perihelion: 2514833.4885 +/- 125786.8
Perihelion: 42.11004075 +/- 32.9646
Aphelion: 49.41313548 +/- 35.1872
Period (y) 309.5707 +/- 221.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -49.29186725 +/- 2.6394
Ecliptic Y -3.39072907 +/- 0.1728
Ecliptic Z 0.39196243 +/- 0.0214
Ecliptic XDOT 0.00015330 +/- 0.0014
Ecliptic YDOT -0.00234262 +/- 0.0008
Ecliptic ZDOT 0.00000991 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 49.40990645 +/- 2.6332
Geocenter to KBO 48.42254215 +/- 2.6452
# Hcoef: 8.64
The following table shows the complete astrometric record for 16GU392. 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 (16GU392) followed by the observatory code and reference code for the source of the astrometry.
2016 04 02.40651 12 14 30.29 -01 03 55.5 24.8i 16GU392 T09 C~8Mck 2016 04 02.50441 12 14 29.91 -01 03 53.1 24.9i 16GU392 T09 C~8Mck 2016 04 04.33458 12 14 22.94 -01 03 08.1 26.4g 16GU392 T09 C~8Mck 2016 04 04.35952 12 14 22.86 -01 03 07.4 26.0g 16GU392 T09 C~8Mck 2016 04 04.38088 12 14 22.76 -01 03 06.8 26.8g 16GU392 T09 C~8Mck 2016 04 08.50164 12 14 07.21 -01 01 26.3 25.3r 16GU392 T09 C~8Mck 2016 04 08.50945 12 14 07.19 -01 01 26.3 25.1r 16GU392 T09 C~8Mck
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 0.04
2 0.0003 -6.18 -0.09 -0.06 0.02
3 0.0053 -119.99 0.07 -0.26 -0.14
4 0.0053 -121.37 0.26 -0.09 0.04
5 0.0054 -122.98 -0.00 -0.14 0.01
6 0.0167 -376.93 -0.15 -0.48 0.07
7 0.0167 -377.20 0.05 -0.60 -0.04
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.