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: 16YB40 # Created Fri Nov 22 02:10:47 2024 # Orbit generated from Bernstein formalism # Fitting 30 observations of 30 # Arc: 3.07y # First observation: 2016/12/23 # Last observation: 2020/01/19 Preliminary a, adot, b, bdot, g, gdot: -0.000026 0.016538 0.000001 0.007587 0.020300 0.000000 # Chi-squared of fit: 12.44 DOF: 54 RMS: 0.11 # Min/Max residuals: -0.29 0.30 # Exact a, adot, b, bdot, g, gdot: 1.337733E-05 1.657457E-02 5.845425E-06 7.613165E-03 2.028201E-02 3.392803E-03 # Covariance matrix: 2.0500E-13 1.2758E-13 1.6446E-14 7.4941E-14 5.1901E-13 3.5114E-12 1.2758E-13 1.7586E-12 -2.1092E-14 8.3985E-13 9.5170E-13 3.9224E-11 1.6446E-14 -2.1092E-14 5.9293E-14 -3.5022E-14 4.7060E-14 -4.9495E-13 7.4941E-14 8.3985E-13 -3.5022E-14 4.9297E-13 4.7184E-13 1.9558E-11 5.1901E-13 9.5170E-13 4.7060E-14 4.7184E-13 1.9299E-12 2.2073E-11 3.5114E-12 3.9224E-11 -4.9495E-13 1.9558E-11 2.2073E-11 9.1344E-10 # lat0 lon0 xBary yBary zBary JD0 -8.667892 150.255768 0.843127 -0.077261 -0.508116 2457745.965889 # Heliocentric elements and errors Epoch: 2457740.5000 = 2016/12/18 Mean Anomaly: 61.12935 +/- 0.099 Argument of Peri: 259.44370 +/- 0.082 Long of Asc Node: 167.49980 +/- 0.001 Inclination: 25.75457 +/- 0.001 Eccentricity: 0.17573355 +/- 0.0017 Semi-Major Axis: 52.90242638 +/- 0.0382 Time of Perihelion: 2433875.6278 +/- 28.7 Perihelion: 43.60569521 +/- 0.0948 Aphelion: 62.19915755 +/- 0.1001 Period (y) 384.7881 +/- 0.42 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -42.35158546 +/- 0.0029 Ecliptic Y 25.16474971 +/- 0.0017 Ecliptic Z -7.43032488 +/- 0.0005 Ecliptic XDOT -0.00163507 +/- 0.0000 Ecliptic YDOT -0.00164785 +/- 0.0000 Ecliptic ZDOT 0.00094688 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 49.82099103 +/- 0.0026 Geocenter to KBO 49.30477765 +/- 0.0034 # Hcoef: 7.59
The following table shows the complete astrometric record for 16YB40. 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 (16YB40) followed by the observatory code and reference code for the source of the astrometry.
2016 12 23.46510 09 57 08.47 +03 15 27.1 24.0z 16YB40 T09 C~7zpU 2016 12 23.51489 09 57 08.36 +03 15 27.4 25.0z 16YB40 T09 C~7zpU 2016 12 23.58584 09 57 08.23 +03 15 27.4 24.6z 16YB40 T09 C~7zpU 2016 12 25.51058 09 57 04.36 +03 15 38.9 24.9r 16YB40 T09 C~7zpU 2016 12 25.53845 09 57 04.31 +03 15 39.0 25.0r 16YB40 T09 C~7zpU 2016 12 25.58308 09 57 04.22 +03 15 39.4 24.7i 16YB40 T09 C~7zpU 2016 12 25.60536 09 57 04.16 +03 15 39.7 24.7i 16YB40 T09 C~7zpU 2017 01 21.42903 09 55 47.87 +03 21 10.9 24.5z 16YB40 T09 C~7zpU 2017 01 21.46896 09 55 47.72 +03 21 11.5 24.1z 16YB40 T09 C~7zpU 2017 01 21.47486 09 55 47.71 +03 21 11.7 24.1z 16YB40 T09 C~7zpU 2017 01 21.50089 09 55 47.62 +03 21 12.1 24.1z 16YB40 T09 C~7zpU 2017 01 21.52708 09 55 47.52 +03 21 12.7 23.7z 16YB40 T09 C~7zpU 2017 01 21.54935 09 55 47.46 +03 21 13.1 24.4z 16YB40 T09 C~7zpU 2017 01 21.58671 09 55 47.33 +03 21 13.7 24.4z 16YB40 T09 C~7zpU 2017 01 23.35517 09 55 41.12 +03 21 46.3 24.8r 16YB40 T09 C~7zpU 2017 01 23.37982 09 55 41.03 +03 21 46.7 24.4r 16YB40 T09 C~7zpU 2017 01 23.40271 09 55 40.96 +03 21 47.2 24.6r 16YB40 T09 C~7zpU 2017 01 23.48803 09 55 40.64 +03 21 48.9 24.4i 16YB40 T09 C~7zpU 2017 01 23.50979 09 55 40.56 +03 21 49.4 24.2i 16YB40 T09 C~7zpU 2017 01 23.53733 09 55 40.46 +03 21 49.7 24.5i 16YB40 T09 C~7zpU 2017 01 23.57255 09 55 40.33 +03 21 50.4 24.2i 16YB40 T09 C~7zpU 2017 01 23.58131 09 55 40.31 +03 21 50.5 24.4i 16YB40 T09 C~7zpU 2017 01 30.40627 09 55 15.41 +03 24 06.8 24.1i 16YB40 T09 C~7zpU 2017 01 30.45035 09 55 15.23 +03 24 07.8 23.9i 16YB40 T09 C~7zpU 2017 01 30.49455 09 55 15.06 +03 24 08.8 24.3z 16YB40 T09 C~7zpU 2017 01 30.52066 09 55 14.97 +03 24 09.2 24.5z 16YB40 T09 C~7zpU 2017 01 30.55762 09 55 14.84 +03 24 09.9 24.0z 16YB40 T09 C~7zpU 2019 02 05.417348 10 03 17.70 +03 35 36.8 16YB40 T09 C~83Ek 2020 01 01.472874 10 09 16.31 +03 30 28.3 16YB40 T09 C~83Ek 2020 01 19.381951 10 08 27.07 +03 34 27.0 16YB40 T09 C~83Ek
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 -0.09 0.00 0.02
2 0.0001 -1.65 -0.25 -0.29 -0.00
3 0.0003 -3.48 0.06 -0.96 -0.29
4 0.0056 -61.83 -0.05 -10.22 -0.00
5 0.0057 -62.57 0.12 -10.39 -0.02
6 0.0058 -63.97 0.16 -10.48 0.12
7 0.0059 -64.92 -0.06 -10.51 0.21
8 0.0793 -1251.43 0.02 -94.75 -0.06
9 0.0794 -1253.75 -0.06 -94.96 -0.22
10 0.0794 -1253.96 0.06 -94.83 -0.07
11 0.0795 -1255.36 0.12 -94.92 -0.12
12 0.0796 -1256.97 -0.03 -94.87 -0.04
13 0.0796 -1257.95 0.24 -94.81 0.06
14 0.0797 -1259.99 0.30 -94.92 0.00
15 0.0846 -1358.52 -0.02 -96.46 0.04
16 0.0846 -1359.92 -0.02 -96.55 -0.03
17 0.0847 -1361.08 0.13 -96.44 0.10
18 0.0849 -1366.16 -0.08 -96.51 0.13
19 0.0850 -1367.46 -0.13 -96.45 0.21
20 0.0851 -1368.97 -0.06 -96.69 0.01
21 0.0852 -1371.04 -0.11 -96.70 0.03
22 0.0852 -1371.35 0.07 -96.71 0.03
23 0.1039 -1768.36 0.01 -97.64 -0.01
24 0.1040 -1771.23 -0.18 -97.63 -0.01
25 0.1041 -1773.97 -0.23 -97.57 0.05
26 0.1042 -1775.37 -0.04 -97.66 -0.05
27 0.1043 -1777.44 0.14 -97.68 -0.07
28 2.1190 4767.54 0.00 3052.02 -0.02
29 3.0226 9916.11 -0.03 4635.32 0.09
30 3.0716 9140.09 0.02 4601.46 -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.
16YB40 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 52.837 52.954 52.722 ecceobj 0.181 0.185 0.176 incobj 25.857 25.855 25.858 qmin 42.712 42.604 42.889 qmax 63.262 63.680 62.919 amean 52.766 52.879 52.655 amin 52.281 52.403 52.183 amax 53.304 53.426 53.180 emean 0.174 0.176 0.170 emin 0.161 0.160 0.157 emax 0.187 0.192 0.183 imean 25.178 25.206 25.171 imin 24.937 24.930 24.939 imax 25.468 25.546 25.443 excite_mean 0.460 0.461 0.458 fracstop 1.000 1.000 1.000 cjmean 2.931 2.930 2.931 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 179.4 175.3 180.3 kozaiamp 180.0 180.0 180.0