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: 17BN233 # Created Wed Dec 25 02:10:51 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 30 observations of 30 # Arc: 7.83y # First observation: 2013/04/03 # Last observation: 2021/02/01 # Chi-squared of fit: 13.79 DOF: 54 RMS: 0.12 # Min/Max residuals: -0.37 0.31 # Exact a, adot, b, bdot, g, gdot: 1.668403E-05 2.737035E-02 -6.513933E-07 -1.425102E-03 2.574176E-02 -4.347496E-03 # Covariance matrix: 1.0488E-12 -4.0988E-13 -3.5359E-14 1.6498E-14 -1.8297E-13 -1.2756E-12 -4.0988E-13 2.0375E-13 1.5582E-14 -9.1252E-15 2.5805E-14 7.1625E-13 -3.5359E-14 1.5582E-14 4.3336E-13 -1.0684E-13 1.5145E-14 6.6602E-14 1.6498E-14 -9.1252E-15 -1.0684E-13 2.9666E-14 -2.3023E-15 -3.7640E-14 -1.8297E-13 2.5805E-14 1.5145E-14 -2.3023E-15 2.1920E-13 1.5058E-13 -1.2756E-12 7.1625E-13 6.6602E-14 -3.7640E-14 1.5058E-13 2.9481E-12 # lat0 lon0 xBary yBary zBary JD0 -11.560955 140.988820 -0.793261 -0.122323 -0.598370 2456385.552297 # Heliocentric elements and errors Epoch: 2456386.5000 = 2013/04/04 Mean Anomaly: 328.46859 +/- 0.013 Argument of Peri: 304.47595 +/- 0.020 Long of Asc Node: 245.53516 +/- 0.002 Inclination: 11.68923 +/- 0.000 Eccentricity: 0.21107865 +/- 0.0001 Semi-Major Axis: 47.17427751 +/- 0.0045 Time of Perihelion: 2466752.1673 +/- 16.0 Perihelion: 37.21679484 +/- 0.0046 Aphelion: 57.13176018 +/- 0.0062 Period (y) 324.0157 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -30.54650773 +/- 0.0005 Ecliptic Y 23.72732683 +/- 0.0004 Ecliptic Z -7.78546469 +/- 0.0001 Ecliptic XDOT -0.00146312 +/- 0.0000 Ecliptic YDOT -0.00256582 +/- 0.0000 Ecliptic ZDOT -0.00005569 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.45498293 +/- 0.0005 Geocenter to KBO 38.84753105 +/- 0.0007 # Hcoef: 7.31
The following table shows the complete astrometric record for 17BN233. 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 (17BN233) followed by the observatory code and reference code for the source of the astrometry.
2013 04 03.051519 09 18 48.667 +03 31 20.24 21.6z 17BN233 W84 C~8HK0 2015 02 17.058729 09 33 43.26 +02 01 21.4 17BN233 W84 C~81Bn 2015 04 11.093494 09 30 22.750 +02 26 10.68 23.9g 17BN233 W84 C~8HK0 2016 01 14.292950 09 42 26.53 +01 15 31.1 17BN233 W84 C~81Bn 2016 02 12.35134 09 40 10.54 +01 24 02.4 23.0y 17BN233 T09 C~8Ai9 2016 02 12.38099 09 40 10.41 +01 24 03.2 23.0y 17BN233 T09 C~8Ai9 2016 02 12.41638 09 40 10.24 +01 24 03.9 22.8y 17BN233 T09 C~8Ai9 2016 02 12.44922 09 40 10.07 +01 24 04.6 22.6y 17BN233 T09 C~8Ai9 2016 03 02.159153 09 38 39.52 +01 32 26.3 17BN233 W84 C~81Bn 2016 03 02.160939 09 38 39.49 +01 32 26.3 17BN233 W84 C~81Bn 2016 12 25.468651 09 49 35.73 +00 38 52.2 17BN233 T09 C~81Bn 2016 12 25.497963 09 49 35.65 +00 38 52.2 17BN233 T09 C~81Bn 2017 01 26.46395 09 47 33.77 +00 42 54.0 22.9z 17BN233 T09 C~7zpa 2017 01 26.47200 09 47 33.74 +00 42 54.1 23.1z 17BN233 T09 C~7zpa 2017 01 26.47736 09 47 33.70 +00 42 54.1 23.0z 17BN233 T09 C~7zpa 2017 01 26.48805 09 47 33.66 +00 42 54.3 23.0z 17BN233 T09 C~7zpa 2017 01 26.49611 09 47 33.61 +00 42 54.3 22.9z 17BN233 T09 C~7zpa 2017 01 26.50415 09 47 33.57 +00 42 54.6 23.1z 17BN233 T09 C~7zpa 2017 01 28.43605 09 47 24.54 +00 43 28.1 23.5g 17BN233 T09 C~7zpa 2017 01 28.47391 09 47 24.36 +00 43 28.7 24.2g 17BN233 T09 C~7zpa 2017 01 28.47880 09 47 24.33 +00 43 28.9 24.5g 17BN233 T09 C~7zpa 2017 03 06.36925 09 44 25.87 +00 58 50.9 23.1i 17BN233 T09 C~7zpa 2017 03 06.38040 09 44 25.83 +00 58 51.2 23.0i 17BN233 T09 C~7zpa 2017 03 06.38871 09 44 25.78 +00 58 51.4 22.9i 17BN233 T09 C~7zpa 2017 03 06.41085 09 44 25.69 +00 58 52.1 23.0i 17BN233 T09 C~7zpa 2017 03 16.023372 09 43 44.290 +01 03 43.16 23.7g 17BN233 W84 C~8HK0 2018 02 09.263426 09 52 35.602 +00 11 33.04 22.6z 17BN233 W84 C~8HK0 2018 05 05.072856 09 47 54.408 +00 50 34.98 23.6r 17BN233 W84 C~8HK0 2018 05 05.074353 09 47 54.408 +00 50 34.87 23.3i 17BN233 W84 C~8HK0 2021 02 01.253988 10 11 46.04 -01 39 56.1 17BN233 W84 C~81Bn
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 0.01 0.00 -0.05
2 1.8754 0.00 0.11 0.00 0.19
3 2.0206 0.00 0.10 0.00 0.31
4 2.7823 0.00 -0.03 0.00 -0.06
5 2.8619 0.00 -0.37 0.00 0.04
6 2.8620 0.00 -0.08 0.00 0.13
7 2.8621 0.00 0.05 0.00 -0.03
8 2.8621 0.00 -0.02 0.00 -0.12
9 2.9134 0.00 0.25 0.00 -0.08
10 2.9134 0.00 -0.08 0.00 -0.13
11 3.7301 0.00 0.20 0.00 -0.15
12 3.7302 0.00 0.22 0.00 -0.08
13 3.8177 0.00 -0.04 0.00 0.07
14 3.8177 0.00 0.08 0.00 0.04
15 3.8177 0.00 -0.14 0.00 -0.05
16 3.8178 0.00 0.02 0.00 -0.03
17 3.8178 0.00 -0.15 0.00 -0.17
18 3.8178 0.00 -0.18 0.00 -0.00
19 3.8231 0.00 -0.02 0.00 0.07
20 3.8232 0.00 0.01 0.00 0.00
21 3.8232 0.00 -0.09 0.00 0.11
22 3.9242 0.00 -0.18 0.00 0.03
23 3.9242 0.00 -0.01 0.00 -0.00
24 3.9243 0.00 -0.18 0.00 -0.05
25 3.9243 0.00 -0.00 0.00 -0.01
26 3.9506 0.00 0.12 0.00 -0.12
27 4.8548 0.00 0.12 0.00 0.11
28 5.0870 0.00 0.09 0.00 0.08
29 5.0870 0.00 0.09 0.00 -0.06
30 7.8335 0.00 -0.00 0.00 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.
17BN233 quality flag:2 Type: SCATEXTD SCATNEAR SCATEXTD axisobj 46.986 46.986 46.986 ecceobj 0.207 0.207 0.207 incobj 11.678 11.678 11.678 qmin 36.595 36.597 36.593 qmax 57.983 58.065 58.006 amean 47.034 47.034 47.034 amin 46.613 46.610 46.618 amax 47.540 47.555 47.552 emean 0.205 0.205 0.205 emin 0.191 0.191 0.191 emax 0.220 0.221 0.220 imean 13.204 13.204 13.204 imin 12.496 12.499 12.497 imax 13.808 13.808 13.805 excite_mean 0.307 0.307 0.307 fracstop 1.000 1.000 1.000 cjmean 3.022 3.022 3.022 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 176.0 176.0 175.8 kozaiamp 180.0 180.0 180.0