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: 16GV390
# Created Mon Apr 28 01:10:49 2025
# Orbit generated from Bernstein formalism
# Fitting 29 observations of 29
# Arc: 1.86y
# First observation: 2015/03/18
# Last observation: 2017/01/26
Preliminary a, adot, b, bdot, g, gdot:
-0.000043 0.024666 0.000001 0.000445 0.024164 0.000000
# Chi-squared of fit: 15.18 DOF: 52 RMS: 0.13
# Min/Max residuals: -0.37 0.32
# Exact a, adot, b, bdot, g, gdot:
1.567967E-05 2.481222E-02 1.300401E-07 4.492370E-04 2.472280E-02 8.138782E-04
# Covariance matrix:
2.5731E-13 7.5627E-13 -2.6773E-15 2.0709E-14 1.8502E-12 2.5095E-11
7.5627E-13 6.0385E-12 -1.7559E-14 1.3893E-13 1.1691E-11 1.7166E-10
-2.6773E-15 -1.7559E-14 1.0505E-13 -7.5610E-14 -3.5880E-14 -5.1427E-13
2.0709E-14 1.3893E-13 -7.5610E-14 1.0779E-13 2.8108E-13 4.0552E-12
1.8502E-12 1.1691E-11 -3.5880E-14 2.8108E-13 2.4290E-11 3.4438E-10
2.5095E-11 1.7166E-10 -5.1427E-13 4.0552E-12 3.4438E-10 4.9960E-09
# lat0 lon0 xBary yBary zBary JD0
0.867631 -177.724542 0.084667 0.015094 -0.988425 2457100.006298
# Heliocentric elements and errors
Epoch: 2457100.5000 = 2015/03/19
Mean Anomaly: 24.95143 +/- 1.942
Argument of Peri: 10.53940 +/- 2.289
Long of Asc Node: 142.95693 +/- 0.021
Inclination: 1.33978 +/- 0.001
Eccentricity: 0.07085251 +/- 0.0011
Semi-Major Axis: 44.23835769 +/- 0.0196
Time of Perihelion: 2449651.6393 +/- 579.6
Perihelion: 41.10395882 +/- 0.0516
Aphelion: 47.37275656 +/- 0.0527
Period (y) 294.2434 +/- 0.20
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -41.40618799 +/- 0.0081
Ecliptic Y -1.56062241 +/- 0.0003
Ecliptic Z 0.61251349 +/- 0.0001
Ecliptic XDOT 0.00001638 +/- 0.0000
Ecliptic YDOT -0.00275491 +/- 0.0000
Ecliptic ZDOT 0.00005120 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.44011485 +/- 0.0081
Geocenter to KBO 40.44849424 +/- 0.0081
# Hcoef: 8.90
The following table shows the complete astrometric record for 16GV390. 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 (16GV390) followed by the observatory code and reference code for the source of the astrometry.
2015 03 18.50552 12 09 43.86 -00 06 31.6 24.9r 16GV390 T09 C~8ieE 2015 03 18.57964 12 09 43.52 -00 06 29.4 25.1r 16GV390 T09 C~8ieE 2015 03 20.41605 12 09 35.26 -00 05 35.0 24.4i 16GV390 T09 C~8ieE 2015 03 20.45800 12 09 35.06 -00 05 33.6 24.6i 16GV390 T09 C~8ieE 2015 03 20.46072 12 09 35.06 -00 05 33.5 24.6i 16GV390 T09 C~8ieE 2015 03 20.49692 12 09 34.88 -00 05 32.8 24.7i 16GV390 T09 C~8ieE 2015 03 20.53554 12 09 34.71 -00 05 31.4 24.4i 16GV390 T09 C~8ieE 2015 03 25.48280 12 09 12.37 -00 03 04.6 25.8g 16GV390 T09 C~8ieE 2015 03 25.51107 12 09 12.23 -00 03 03.8 25.9g 16GV390 T09 C~8ieE 2015 03 25.55615 12 09 12.01 -00 03 02.3 26.0g 16GV390 T09 C~8ieE 2015 03 29.27727 12 08 55.29 -00 01 12.8 23.6y 16GV390 T09 C~8ieE 2015 03 29.29365 12 08 55.20 -00 01 12.3 23.6y 16GV390 T09 C~8ieE 2015 03 29.36170 12 08 54.88 -00 01 10.6 24.2y 16GV390 T09 C~8ieE 2016 04 02.38656 12 13 49.63 -00 31 23.7 25.4i 16GV390 T09 C~8HFs 2016 04 02.40651 12 13 49.56 -00 31 23.2 24.5i 16GV390 T09 C~8HFs 2016 04 02.43106 12 13 49.43 -00 31 22.5 24.7i 16GV390 T09 C~8HFs 2016 04 02.48823 12 13 49.18 -00 31 21.0 25.1i 16GV390 T09 C~8HFs 2016 04 02.51252 12 13 49.07 -00 31 20.0 24.9i 16GV390 T09 C~8HFs 2016 04 04.34312 12 13 40.97 -00 30 27.9 26.0g 16GV390 T09 C~8HFs 2016 04 04.35952 12 13 40.90 -00 30 27.0 25.7g 16GV390 T09 C~8HFs 2016 04 04.40435 12 13 40.70 -00 30 25.5 25.9g 16GV390 T09 C~8HFs 2016 04 08.50449 12 13 22.78 -00 28 29.9 25.6r 16GV390 T09 C~8HFs 2016 04 08.50945 12 13 22.73 -00 28 29.6 25.4r 16GV390 T09 C~8HFs 2016 04 08.51792 12 13 22.70 -00 28 29.3 25.6r 16GV390 T09 C~8HFs 2017 01 26.62279 12 23 08.81 -01 31 07.0 24.3z 16GV390 T09 C~8ieE 2017 01 26.62885 12 23 08.81 -01 31 07.0 25.1z 16GV390 T09 C~8ieE 2017 01 26.63960 12 23 08.79 -01 31 07.0 24.5z 16GV390 T09 C~8ieE 2017 01 26.64498 12 23 08.78 -01 31 06.8 24.5z 16GV390 T09 C~8ieE 2017 01 26.65034 12 23 08.76 -01 31 06.6 24.8z 16GV390 T09 C~8ieE
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 0.04 0.00 0.03
2 0.0002 -5.55 0.02 -0.01 0.03
3 0.0052 -140.87 0.06 0.66 -0.04
4 0.0053 -144.18 -0.10 0.76 0.06
5 0.0054 -144.22 0.06 0.85 0.16
6 0.0055 -146.97 0.02 0.42 -0.27
7 0.0056 -149.87 0.02 0.69 0.01
8 0.0191 -515.71 0.12 2.20 0.12
9 0.0192 -517.96 -0.01 2.10 0.03
10 0.0193 -521.58 -0.26 2.17 0.10
11 0.0295 -795.25 0.16 2.96 0.10
12 0.0295 -796.68 -0.06 2.88 0.03
13 0.0297 -801.76 -0.07 2.54 -0.30
14 1.0428 3976.34 -0.18 95.93 0.06
15 1.0429 3975.17 0.13 95.97 0.11
16 1.0429 3973.11 -0.13 95.84 -0.01
17 1.0431 3969.07 0.06 95.72 -0.10
18 1.0431 3967.16 -0.07 95.99 0.17
19 1.0482 3834.91 0.12 95.52 -0.37
20 1.0482 3833.59 0.00 95.92 0.05
21 1.0483 3830.24 -0.06 96.11 0.26
22 1.0595 3537.56 0.32 95.37 -0.12
23 1.0596 3536.75 -0.14 95.35 -0.14
24 1.0596 3536.22 -0.06 95.45 -0.04
25 1.8621 13113.10 -0.14 137.51 0.04
26 1.8621 13113.10 0.06 137.51 0.03
27 1.8621 13112.83 0.12 137.39 -0.10
28 1.8621 13112.61 0.07 137.52 0.02
29 1.8621 13112.25 -0.11 137.58 0.08
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.
16GV390 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.825 43.872 43.782 ecceobj 0.063 0.060 0.066 incobj 1.344 1.344 1.344 qmin 40.210 40.406 39.993 qmax 48.070 47.946 48.226 amean 44.020 44.070 43.975 amin 43.672 43.715 43.628 amax 44.388 44.439 44.345 emean 0.067 0.064 0.071 emin 0.050 0.048 0.054 emax 0.083 0.079 0.088 imean 1.475 1.466 1.488 imin 0.656 0.694 0.619 imax 2.185 2.151 2.218 excite_mean 0.072 0.069 0.076 fracstop 1.000 1.000 1.000 cjmean 3.095 3.097 3.094 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 181.0 180.3 181.8 kozaiamp 179.9 180.0 180.0