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 Jul 17 01:11:28 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 20 observations of 20 # Arc: 5.96y # First observation: 2015/02/17 # Last observation: 2021/02/01 # Chi-squared of fit: 6.91 DOF: 34 RMS: 0.10 # Min/Max residuals: -0.18 0.26 # Exact a, adot, b, bdot, g, gdot: 1.733883E-05 2.810867E-02 -1.785397E-06 -1.066123E-03 2.616515E-02 -3.714426E-03 # Covariance matrix: 9.8899E-13 -6.9581E-13 -2.4486E-14 2.1143E-14 -1.5469E-13 -3.0239E-12 -6.9581E-13 5.5850E-13 2.2675E-14 -1.8251E-14 4.6021E-14 2.5905E-12 -2.4486E-14 2.2675E-14 3.0354E-13 -1.1988E-13 -8.7534E-15 1.1643E-13 2.1143E-14 -1.8251E-14 -1.1988E-13 6.2325E-14 -1.4314E-15 -9.5117E-14 -1.5469E-13 4.6021E-14 -8.7534E-15 -1.4314E-15 6.0287E-13 3.3876E-13 -3.0239E-12 2.5905E-12 1.1643E-13 -9.5117E-14 3.3876E-13 1.3523E-11 # lat0 lon0 xBary yBary zBary JD0 -11.798290 145.080245 -0.046324 -0.201026 -0.963344 2457070.559507 # Heliocentric elements and errors Epoch: 2457070.5000 = 2015/02/17 Mean Anomaly: 330.78746 +/- 0.024 Argument of Peri: 304.36129 +/- 0.041 Long of Asc Node: 245.63209 +/- 0.002 Inclination: 11.69321 +/- 0.000 Eccentricity: 0.21456827 +/- 0.0001 Semi-Major Axis: 47.34907764 +/- 0.0074 Time of Perihelion: 2466727.2851 +/- 27.0 Perihelion: 37.18946818 +/- 0.0078 Aphelion: 57.50868710 +/- 0.0104 Period (y) 325.8183 +/- 0.08 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -31.51241922 +/- 0.0009 Ecliptic Y 21.94071451 +/- 0.0006 Ecliptic Z -7.81458963 +/- 0.0002 Ecliptic XDOT -0.00135663 +/- 0.0000 Ecliptic YDOT -0.00264807 +/- 0.0000 Ecliptic ZDOT -0.00002964 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.18548175 +/- 0.0008 Geocenter to KBO 38.21888271 +/- 0.0011 # Hcoef: 7.42
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.
2015 02 17.058729 09 33 43.26 +02 01 21.4 17BN233 W84 C~81Bn 2016 01 14.292950 09 42 26.53 +01 15 31.1 17BN233 W84 C~81Bn 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 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 0.25
2 0.9069 0.00 -0.12 0.00 -0.02
3 1.0379 0.00 0.26 0.00 -0.06
4 1.0379 0.00 -0.07 0.00 -0.11
5 1.8546 0.00 0.14 0.00 -0.12
6 1.8547 0.00 0.17 0.00 -0.05
7 1.9422 0.00 -0.04 0.00 0.09
8 1.9423 0.00 0.08 0.00 0.05
9 1.9423 0.00 -0.13 0.00 -0.04
10 1.9423 0.00 0.03 0.00 -0.02
11 1.9423 0.00 -0.15 0.00 -0.15
12 1.9424 0.00 -0.18 0.00 0.01
13 1.9476 0.00 -0.01 0.00 0.09
14 1.9477 0.00 0.01 0.00 0.02
15 1.9478 0.00 -0.08 0.00 0.13
16 2.0488 0.00 -0.10 0.00 0.02
17 2.0488 0.00 0.07 0.00 -0.02
18 2.0488 0.00 -0.10 0.00 -0.06
19 2.0489 0.00 0.08 0.00 -0.02
20 5.9581 0.00 0.04 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:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 46.980 46.980 46.981 ecceobj 0.207 0.207 0.207 incobj 11.678 11.678 11.678 qmin 36.538 36.543 36.593 qmax 58.093 57.999 58.088 amean 47.029 47.028 47.030 amin 46.610 46.594 46.606 amax 47.555 47.561 47.551 emean 0.205 0.205 0.205 emin 0.191 0.191 0.190 emax 0.222 0.220 0.222 imean 13.204 13.204 13.204 imin 12.491 12.493 12.497 imax 13.813 13.815 13.813 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 176.1 176.1 176.1 kozaiamp 180.0 180.0 180.0