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: 16AQ394 # Created Wed Mar 26 01:10:47 2025 # Orbit generated from Bernstein formalism # Fitting 26 observations of 26 # Arc: 3.97y # First observation: 2015/03/18 # Last observation: 2019/03/08 Preliminary a, adot, b, bdot, g, gdot: 0.000226 0.020952 -0.000019 0.004966 0.022907 0.000000 # Chi-squared of fit: 14.35 DOF: 46 RMS: 0.13 # Min/Max residuals: -0.38 0.37 # Exact a, adot, b, bdot, g, gdot: 1.495422E-05 2.090425E-02 2.275183E-06 4.961784E-03 2.339766E-02 2.115155E-04 # Covariance matrix: 2.6760E-13 -2.5703E-13 2.1895E-14 -4.0741E-14 -8.5710E-14 -2.2971E-12 -2.5703E-13 1.1908E-12 -1.1882E-13 2.3605E-13 -2.1390E-13 1.3132E-11 2.1895E-14 -1.1882E-13 1.6244E-13 -9.5921E-14 1.8954E-14 -1.3772E-12 -4.0741E-14 2.3605E-13 -9.5921E-14 1.0337E-13 -4.1464E-14 2.7311E-12 -8.5710E-14 -2.1390E-13 1.8954E-14 -4.1464E-14 2.0719E-13 -2.2644E-12 -2.2971E-12 1.3132E-11 -1.3772E-12 2.7311E-12 -2.2644E-12 1.5199E-10 # lat0 lon0 xBary yBary zBary JD0 -13.590680 139.393192 -0.608363 -0.184019 -0.761783 2457099.842498 # Heliocentric elements and errors Epoch: 2457090.5000 = 2015/03/09 Mean Anomaly: 158.61889 +/- 0.446 Argument of Peri: 153.19366 +/- 0.442 Long of Asc Node: 184.08263 +/- 0.001 Inclination: 18.89930 +/- 0.000 Eccentricity: 0.07010728 +/- 0.0001 Semi-Major Axis: 40.81877330 +/- 0.0059 Time of Perihelion: 2415120.3262 +/- 117.6 Perihelion: 37.95708009 +/- 0.0067 Aphelion: 43.68046651 +/- 0.0074 Period (y) 260.7943 +/- 0.06 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -32.53338034 +/- 0.0006 Ecliptic Y 27.08677325 +/- 0.0005 Ecliptic Z -10.04296019 +/- 0.0002 Ecliptic XDOT -0.00171733 +/- 0.0000 Ecliptic YDOT -0.00175837 +/- 0.0000 Ecliptic ZDOT 0.00055861 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 43.50833450 +/- 0.0006 Geocenter to KBO 42.73932532 +/- 0.0008 # Hcoef: 8.06
The following table shows the complete astrometric record for 16AQ394. 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 (16AQ394) followed by the observatory code and reference code for the source of the astrometry.
2015 03 18.34172 09 10 23.20 +02 03 58.7 24.8r 16AQ394 T09 C~8idB 2015 03 18.34820 09 10 23.19 +02 03 58.7 24.6r 16AQ394 T09 C~8idB 2015 03 18.35684 09 10 23.15 +02 03 59.0 24.8r 16AQ394 T09 C~8idB 2015 03 18.38297 09 10 23.07 +02 03 59.3 24.7r 16AQ394 T09 C~8idB 2015 03 22.427677 09 10 10.68 +02 06 02.6 16AQ394 T09 C~89Si 2016 01 09.46456 09 20 05.13 +01 31 11.8 23.8y 16AQ394 T09 C~8idB 2016 01 09.47880 09 20 05.07 +01 31 11.8 23.7y 16AQ394 T09 C~8idB 2016 01 09.50342 09 20 04.98 +01 31 12.7 23.8y 16AQ394 T09 C~8idB 2016 01 12.383413 09 19 53.65 +01 31 45.7 16AQ394 T09 C~89Si 2016 01 12.39231 09 19 53.60 +01 31 45.8 24.2z 16AQ394 T09 C~8idB 2016 01 12.40929 09 19 53.52 +01 31 46.2 23.8z 16AQ394 T09 C~8idB 2016 01 12.414662 09 19 53.52 +01 31 46.1 16AQ394 T09 C~89Si 2016 03 07.381552 09 15 54.89 +01 53 13.3 16AQ394 T09 C~89Si 2016 11 28.521946 09 26 40.61 +01 25 58.0 16AQ394 T09 C~89Si 2016 11 29.50349 09 26 39.77 +01 25 46.7 24.5i 16AQ394 T09 C~89Si 2016 11 29.51494 09 26 39.75 +01 25 46.5 25.0i 16AQ394 T09 C~89Si 2016 11 29.64147 09 26 39.65 +01 25 45.2 24.5z 16AQ394 T09 C~89Si 2016 11 29.64415 09 26 39.64 +01 25 45.2 24.3z 16AQ394 T09 C~89Si 2016 11 29.64685 09 26 39.63 +01 25 45.0 24.7z 16AQ394 T09 C~89Si 2016 11 29.64951 09 26 39.63 +01 25 45.0 23.8z 16AQ394 T09 C~89Si 2017 02 01.48691 09 23 19.23 +01 32 09.6 24.2i 16AQ394 T09 C~8HD4 2017 02 01.49516 09 23 19.18 +01 32 09.4 24.3i 16AQ394 T09 C~8HD4 2017 02 01.52816 09 23 19.04 +01 32 10.1 24.1i 16AQ394 T09 C~8HD4 2017 02 01.53643 09 23 18.99 +01 32 10.4 23.9i 16AQ394 T09 C~8HD4 2019 03 08.283422 09 30 39.13 +01 36 19.0 16AQ394 T09 C~89Si 2019 03 08.323421 09 30 38.96 +01 36 20.2 16AQ394 T09 C~89Si
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 -0.17 0.00 0.22
2 0.0000 -0.14 0.05 -0.05 0.09
3 0.0000 -0.81 -0.13 0.06 0.07
4 0.0001 -2.04 0.10 -0.02 -0.38
5 0.0112 -216.34 0.13 61.40 0.00
6 0.8135 8916.18 -0.01 768.21 -0.10
7 0.8135 8915.32 -0.02 767.93 -0.27
8 0.8136 8913.76 -0.10 768.38 0.37
9 0.8215 8741.55 0.20 748.24 -0.02
10 0.8215 8740.80 0.00 748.11 -0.10
11 0.8215 8739.54 -0.21 748.13 0.03
12 0.8216 8739.57 0.15 748.03 -0.03
13 0.9720 4935.55 0.05 889.62 -0.01
14 1.7007 14681.03 -0.00 2275.03 -0.03
15 1.7034 14672.42 -0.04 2260.39 0.04
16 1.7034 14672.20 -0.15 2260.11 -0.06
17 1.7038 14671.16 0.15 2258.41 0.17
18 1.7038 14671.02 0.04 2258.37 0.16
19 1.7038 14670.93 -0.01 2258.13 -0.03
20 1.7038 14670.93 0.01 2258.13 0.01
21 1.8786 11678.76 -0.01 1708.71 0.26
22 1.8786 11678.11 -0.07 1708.29 -0.16
23 1.8787 11675.89 0.11 1708.32 -0.13
24 1.8787 11675.08 -0.10 1708.38 -0.07
25 3.9725 17920.07 0.07 3963.42 0.01
26 3.9726 17917.26 -0.05 3963.78 -0.05
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.
16AQ394 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 40.677 40.696 40.658 ecceobj 0.076 0.076 0.076 incobj 18.951 18.951 18.952 qmin 36.678 36.529 36.733 qmax 44.862 45.069 44.740 amean 40.646 40.695 40.625 amin 40.325 40.339 40.305 amax 40.995 41.057 40.956 emean 0.078 0.081 0.077 emin 0.064 0.063 0.063 emax 0.095 0.099 0.093 imean 19.177 19.155 19.183 imin 18.470 18.403 18.477 imax 19.920 19.890 19.906 excite_mean 0.338 0.338 0.338 fracstop 1.000 1.000 1.000 cjmean 2.929 2.929 2.929 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 183.0 180.7 187.4 kozaiamp 179.9 179.9 180.0