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: 16NB208 # Created Mon Jul 7 01:11:10 2025 # Orbit generated from Bernstein formalism # Fitting 29 observations of 29 # Arc: 3.16y # First observation: 2015/07/12 # Last observation: 2018/09/09 Preliminary a, adot, b, bdot, g, gdot: -0.000263 0.028058 0.000033 -0.004740 0.025958 0.000000 # Chi-squared of fit: 10.77 DOF: 52 RMS: 0.11 # Min/Max residuals: -0.22 0.29 # Exact a, adot, b, bdot, g, gdot: 1.653534E-05 2.787233E-02 -3.013125E-06 -4.715373E-03 2.618574E-02 -6.907403E-04 # Covariance matrix: 2.9432E-13 -5.1799E-13 -2.4188E-14 7.9819E-14 8.4470E-14 -6.8405E-12 -5.1799E-13 1.2413E-12 6.7854E-14 -2.1603E-13 -1.2946E-13 1.8565E-11 -2.4188E-14 6.7854E-14 1.3821E-13 -1.2099E-13 -2.7790E-15 1.1540E-12 7.9819E-14 -2.1603E-13 -1.2099E-13 1.8194E-13 2.2292E-14 -3.6463E-12 8.4470E-14 -1.2946E-13 -2.7790E-15 2.2292E-14 1.8849E-13 -1.8253E-12 -6.8405E-12 1.8565E-11 1.1540E-12 -3.6463E-12 -1.8253E-12 3.1354E-10 # lat0 lon0 xBary yBary zBary JD0 12.641387 -23.988840 0.735248 0.154033 -0.686357 2457215.925589 # Heliocentric elements and errors Epoch: 2457210.5000 = 2015/07/07 Mean Anomaly: 346.09019 +/- 0.199 Argument of Peri: 145.46187 +/- 0.275 Long of Asc Node: 207.30751 +/- 0.002 Inclination: 15.52424 +/- 0.000 Eccentricity: 0.14932910 +/- 0.0001 Semi-Major Axis: 45.38448203 +/- 0.0055 Time of Perihelion: 2461525.4745 +/- 61.6 Perihelion: 38.60725808 +/- 0.0075 Aphelion: 52.16170599 +/- 0.0086 Period (y) 305.7520 +/- 0.06 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 34.38496352 +/- 0.0006 Ecliptic Y -16.10702462 +/- 0.0003 Ecliptic Z 8.35748120 +/- 0.0001 Ecliptic XDOT 0.00121668 +/- 0.0000 Ecliptic YDOT 0.00264098 +/- 0.0000 Ecliptic ZDOT -0.00049681 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.87942194 +/- 0.0005 Geocenter to KBO 38.18873017 +/- 0.0006 # Hcoef: 7.92
The following table shows the complete astrometric record for 16NB208. 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 (16NB208) followed by the observatory code and reference code for the source of the astrometry.
2015 07 12.42480 22 12 39.36 +02 27 50.0 23.3z 16NB208 T09 C~8vI9 2015 07 12.46603 22 12 39.22 +02 27 49.6 23.4z 16NB208 T09 C~8vI9 2015 07 20.45573 22 12 11.35 +02 26 39.7 23.3i 16NB208 T09 C~8vI9 2015 07 20.47757 22 12 11.28 +02 26 39.5 23.5i 16NB208 T09 C~8vI9 2015 07 20.49668 22 12 11.21 +02 26 39.2 23.4i 16NB208 T09 C~8vI9 2015 10 10.22667 22 06 26.15 +01 48 22.0 23.8r 16NB208 T09 C~8vI9 2015 10 10.23091 22 06 26.14 +01 48 21.9 23.8r 16NB208 T09 C~8vI9 2015 10 10.23304 22 06 26.12 +01 48 21.7 23.8r 16NB208 T09 C~8vI9 2015 10 10.24575 22 06 26.08 +01 48 21.4 24.0r 16NB208 T09 C~8vI9 2016 06 04.53112 22 20 00.80 +02 43 44.4 23.9z 16NB208 T09 C~8vI9 2016 06 04.59855 22 20 00.77 +02 43 45.4 23.8z 16NB208 T09 C~8vI9 2016 06 04.60125 22 20 00.78 +02 43 45.4 23.7z 16NB208 T09 C~8vI9 2016 06 04.60665 22 20 00.80 +02 43 45.6 23.1z 16NB208 T09 C~8vI9 2016 06 04.61003 22 20 00.80 +02 43 45.7 23.8z 16NB208 T09 C~8vI9 2016 06 11.51833 22 19 58.49 +02 45 32.1 24.0r 16NB208 T09 C~8vI9 2016 06 11.53571 22 19 58.48 +02 45 32.4 24.3r 16NB208 T09 C~8vI9 2016 06 11.54227 22 19 58.46 +02 45 32.4 24.0r 16NB208 T09 C~8vI9 2016 07 05.42542 22 19 18.07 +02 47 51.4 24.3i 16NB208 T09 C~8vI9 2016 07 05.42883 22 19 18.06 +02 47 51.6 23.5i 16NB208 T09 C~8vI9 2016 07 05.44043 22 19 18.03 +02 47 51.6 24.1i 16NB208 T09 C~8vI9 2016 07 05.48397 22 19 17.92 +02 47 51.4 24.3i 16NB208 T09 C~8vI9 2016 07 07.43318 22 19 12.55 +02 47 46.7 24.1g 16NB208 T09 C~8vI9 2016 07 07.45792 22 19 12.49 +02 47 46.7 24.9g 16NB208 T09 C~8vI9 2016 07 07.46638 22 19 12.47 +02 47 46.6 24.2g 16NB208 T09 C~8vI9 2016 07 12.40104 22 18 57.70 +02 47 23.4 23.3z 16NB208 T09 C~8vI9 2016 07 12.41799 22 18 57.65 +02 47 23.2 23.5z 16NB208 T09 C~8vI9 2016 07 12.42337 22 18 57.63 +02 47 23.1 23.7z 16NB208 T09 C~8vI9 2016 07 12.43685 22 18 57.57 +02 47 23.2 23.2z 16NB208 T09 C~8vI9 2018 09 09.169289 22 27 36.931 +03 05 32.89 23.5r 16NB208 W84 C~8vI9
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 0.06 0.00 0.03
2 0.0001 -2.10 -0.04 0.39 -0.08
3 0.0220 -416.58 -0.20 87.23 0.02
4 0.0220 -417.63 0.00 87.42 -0.01
5 0.0221 -418.71 0.01 87.52 -0.10
6 0.2459 -6074.22 0.10 -167.67 -0.05
7 0.2459 -6074.39 0.15 -167.71 -0.02
8 0.2459 -6074.74 -0.09 -167.78 -0.07
9 0.2459 -6075.41 -0.07 -167.84 0.07
10 0.8983 6512.18 0.23 -1513.03 0.10
11 0.8985 6512.12 -0.18 -1511.93 0.06
12 0.8985 6512.26 -0.05 -1511.98 -0.04
13 0.8985 6512.61 0.27 -1511.91 -0.05
14 0.8985 6512.65 0.29 -1511.81 -0.01
15 0.9174 6518.94 0.04 -1400.04 0.06
16 0.9175 6518.91 0.10 -1399.71 0.11
17 0.9175 6518.63 -0.15 -1399.60 0.11
18 0.9829 6004.51 -0.08 -1050.50 -0.18
19 0.9829 6004.44 -0.02 -1050.25 0.01
20 0.9829 6004.02 0.01 -1050.09 0.02
21 0.9831 6002.41 0.10 -1049.68 -0.14
22 0.9884 5925.66 -0.19 -1024.88 0.11
23 0.9885 5924.82 -0.01 -1024.55 0.12
24 0.9885 5924.51 0.03 -1024.54 0.02
25 1.0020 5709.69 -0.02 -965.89 0.04
26 1.0020 5708.92 0.01 -965.80 -0.07
27 1.0020 5708.60 -0.05 -965.79 -0.12
28 1.0021 5707.80 -0.22 -965.37 0.14
29 3.1615 13373.28 -0.02 -2767.49 -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.
16NB208 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 45.720 45.742 45.697 ecceobj 0.157 0.157 0.156 incobj 15.497 15.496 15.497 qmin 37.945 37.873 37.826 qmax 53.861 53.897 53.853 amean 45.647 45.676 45.630 amin 45.254 45.284 45.253 amax 46.101 46.107 46.069 emean 0.154 0.154 0.155 emin 0.142 0.142 0.142 emax 0.169 0.169 0.169 imean 16.144 16.147 16.144 imin 15.653 15.681 15.654 imax 16.610 16.602 16.615 excite_mean 0.318 0.318 0.318 fracstop 1.000 1.000 1.000 cjmean 2.997 2.997 2.996 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 180.2 180.5 180.3 kozaiamp 180.0 180.0 180.0