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: 16GB394
# Created Sun Feb 23 02:10:44 2025
# Orbit generated from Bernstein formalism
# Fitting 11 observations of 11
# Arc: 6.13d
# First observation: 2016/04/02
# Last observation: 2016/04/08
Preliminary a, adot, b, bdot, g, gdot:
0.000000 0.015862 0.000000 0.000396 0.022386 0.000000
# WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution
# WARNING Fitting with energy constraint
# WARNING MRQMIN stopped after 14 iterations -- oscilliatory solution
# WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution
# Chi-squared of fit: 3.31 DOF: 17 RMS: 0.10
# Min/Max residuals: -0.13 0.24
# Exact a, adot, b, bdot, g, gdot:
1.498399E-05 2.110509E-02 5.108844E-07 4.405126E-04 2.324911E-02 -2.485292E-04
# Covariance matrix:
3.1945E-11 4.5608E-08 1.6550E-13 3.8926E-10 7.4239E-09 3.2604E-09
4.5608E-08 6.5598E-05 2.3798E-10 5.5967E-07 1.0675E-05 6.9641E-06
1.6550E-13 2.3798E-10 2.1800E-13 -1.3356E-11 3.8724E-11 1.5095E-11
3.8926E-10 5.5967E-07 -1.3356E-11 7.6092E-09 9.1076E-08 5.6528E-08
7.4239E-09 1.0675E-05 3.8724E-11 9.1076E-08 1.7370E-06 9.2390E-07
3.2604E-09 6.9641E-06 1.5095E-11 5.6528E-08 9.2390E-07 -6.4267E-04
# lat0 lon0 xBary yBary zBary JD0
2.340205 -176.630094 -0.162918 0.040245 -0.981373 2457480.901139
# Heliocentric elements and errors
Epoch: 2457480.5000 = 2016/04/02
Mean Anomaly: 186.36022 +/- 205.639
Argument of Peri: 237.19374 +/- 237.194
Long of Asc Node: 120.93801 +/- 5.811
Inclination: 2.57543 +/- 0.138
Eccentricity: 0.07627773 +/- 0.5437
Semi-Major Axis: 40.89518829 +/- 18.6288
Time of Perihelion: 2503554.2412 +/- 9999999.9
Perihelion: 37.77579623 +/- 28.1141
Aphelion: 44.01458036 +/- 29.9380
Period (y) 261.5270 +/- 178.70
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -43.87686989 +/- 2.4321
Ecliptic Y -2.74930958 +/- 0.1430
Ecliptic Z 1.75636815 +/- 0.0996
Ecliptic XDOT 0.00017751 +/- 0.0002
Ecliptic YDOT -0.00248621 +/- 0.0008
Ecliptic ZDOT 0.00005064 +/- 0.0001
# Distances at JD0 (AU)
Heliocenter to KBO 43.99799136 +/- 2.4254
Geocenter to KBO 43.01240186 +/- 2.4383
# Hcoef: 8.69
The following table shows the complete astrometric record for 16GB394. 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 (16GB394) followed by the observatory code and reference code for the source of the astrometry.
2016 04 02.40035 12 16 05.23 +00 48 28.6 25.1i 16GB394 T09 C~8eV3 2016 04 02.42290 12 16 05.14 +00 48 29.3 24.8i 16GB394 T09 C~8eV3 2016 04 02.43920 12 16 05.07 +00 48 29.6 24.8i 16GB394 T09 C~8eV3 2016 04 02.47448 12 16 04.92 +00 48 30.6 24.6i 16GB394 T09 C~8eV3 2016 04 02.52059 12 16 04.71 +00 48 31.8 24.6i 16GB394 T09 C~8eV3 2016 04 04.35452 12 15 56.93 +00 49 22.0 25.5g 16GB394 T09 C~8eV3 2016 04 04.39376 12 15 56.75 +00 49 22.9 26.1g 16GB394 T09 C~8eV3 2016 04 04.41084 12 15 56.70 +00 49 23.5 25.7g 16GB394 T09 C~8eV3 2016 04 08.50734 12 15 39.45 +00 51 13.1 24.5r 16GB394 T09 C~8eV3 2016 04 08.51156 12 15 39.43 +00 51 13.1 24.6r 16GB394 T09 C~8eV3 2016 04 08.52637 12 15 39.38 +00 51 13.4 25.3r 16GB394 T09 C~8eV3
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 0.0001 -1.52 -0.05 0.11 0.08
3 0.0001 -2.60 0.02 -0.04 -0.05
4 0.0002 -5.06 0.05 -0.01 -0.00
5 0.0003 -8.43 -0.06 -0.16 -0.12
6 0.0054 -135.46 0.04 -0.43 0.12
7 0.0055 -138.29 -0.04 -0.67 -0.10
8 0.0055 -139.22 0.24 -0.42 0.17
9 0.0167 -420.19 -0.10 -2.58 0.06
10 0.0167 -420.47 -0.08 -2.70 -0.06
11 0.0168 -421.27 0.13 -2.72 -0.06
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.
16GB394 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0