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: 17BB233 # Created Tue Apr 1 01:11:01 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 33 observations of 33 # Arc: 9.95y # First observation: 2015/03/14 # Last observation: 2025/02/23 # Chi-squared of fit: 17.51 DOF: 60 RMS: 0.13 # Min/Max residuals: -0.37 0.28 # Exact a, adot, b, bdot, g, gdot: 1.923239E-05 3.099084E-02 -2.984362E-06 -4.443882E-03 2.613174E-02 3.810582E-04 # Covariance matrix: 5.2664E-13 -3.3139E-13 -6.0644E-14 4.4733E-14 -6.6156E-14 -8.7077E-13 -3.3139E-13 2.6574E-13 5.0765E-14 -3.7340E-14 -3.6948E-14 7.2065E-13 -6.0644E-14 5.0765E-14 9.6363E-14 -2.4576E-14 -9.1513E-15 1.4149E-13 4.4733E-14 -3.7340E-14 -2.4576E-14 1.2444E-14 6.4916E-15 -1.0407E-13 -6.6156E-14 -3.6948E-14 -9.1513E-15 6.4916E-15 2.1513E-13 -1.1123E-13 -8.7077E-13 7.2065E-13 1.4149E-13 -1.0407E-13 -1.1123E-13 2.0079E-12 # lat0 lon0 xBary yBary zBary JD0 -12.191239 142.658433 -0.499842 -0.180508 -0.836348 2457095.575808 # Heliocentric elements and errors Epoch: 2457096.5000 = 2015/03/15 Mean Anomaly: 1.65820 +/- 0.003 Argument of Peri: 232.05275 +/- 0.008 Long of Asc Node: 267.61340 +/- 0.001 Inclination: 14.32436 +/- 0.000 Eccentricity: 0.42853892 +/- 0.0001 Semi-Major Axis: 68.37354990 +/- 0.0125 Time of Perihelion: 2456145.3174 +/- 1.7 Perihelion: 39.07282283 +/- 0.0098 Aphelion: 97.67427696 +/- 0.0191 Period (y) 565.3799 +/- 0.16 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -30.72490555 +/- 0.0005 Ecliptic Y 22.80980746 +/- 0.0004 Ecliptic Z -8.08132964 +/- 0.0001 Ecliptic XDOT -0.00192580 +/- 0.0000 Ecliptic YDOT -0.00262314 +/- 0.0000 Ecliptic ZDOT -0.00046343 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.11027575 +/- 0.0005 Geocenter to KBO 38.26767673 +/- 0.0007 # Hcoef: 7.89
The following table shows the complete astrometric record for 17BB233. 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 (17BB233) followed by the observatory code and reference code for the source of the astrometry.
2015 03 14.075030 09 24 14.155 +02 24 43.63 23.5r 17BB233 W84 C~8HK0 2015 03 22.445189 09 23 43.85 +02 28 28.3 17BB233 T09 C~83Eq 2016 02 12.34443 09 32 56.44 +01 23 39.2 23.3y 17BB233 T09 C~8COq 2016 02 12.37829 09 32 56.27 +01 23 39.8 23.8y 17BB233 T09 C~8COq 2016 02 12.44652 09 32 55.93 +01 23 41.5 23.1y 17BB233 T09 C~8COq 2016 04 04.257515 09 29 28.93 +01 46 16.8 17BB233 T09 C~83Eq 2016 12 25.45752 09 42 42.11 +00 27 30.8 24.0r 17BB233 T09 C~7xTq 2016 12 25.46657 09 42 42.08 +00 27 30.8 23.8r 17BB233 T09 C~7xTq 2016 12 25.47915 09 42 42.04 +00 27 30.8 23.8r 17BB233 T09 C~7xTq 2016 12 25.48541 09 42 42.04 +00 27 30.4 24.0r 17BB233 T09 C~7xTq 2016 12 25.49589 09 42 42.01 +00 27 30.8 23.9r 17BB233 T09 C~7xTq 2017 01 21.37737 09 41 02.20 +00 29 10.1 23.7z 17BB233 T09 C~7xTq 2017 01 21.38540 09 41 02.17 +00 29 10.4 23.5z 17BB233 T09 C~7xTq 2017 01 21.41223 09 41 02.05 +00 29 10.6 24.0z 17BB233 T09 C~7xTq 2017 01 21.57062 09 41 01.33 +00 29 12.3 23.7z 17BB233 T09 C~7xTq 2017 01 21.63521 09 41 01.04 +00 29 13.0 23.4z 17BB233 T09 C~7xTq 2017 01 21.64327 09 41 00.98 +00 29 13.3 23.7z 17BB233 T09 C~7xTq 2017 01 28.39557 09 40 30.09 +00 30 45.2 24.5g 17BB233 T09 C~7xTq 2017 01 28.43325 09 40 29.90 +00 30 45.9 24.7g 17BB233 T09 C~7xTq 2017 01 28.45922 09 40 29.78 +00 30 46.2 24.5g 17BB233 T09 C~7xTq 2017 01 28.47182 09 40 29.73 +00 30 46.5 24.2g 17BB233 T09 C~7xTq 2017 03 04.37777 09 37 43.30 +00 43 47.5 23.4i 17BB233 T09 C~7xTq 2017 03 04.38044 09 37 43.30 +00 43 47.3 23.6i 17BB233 T09 C~7xTq 2017 03 04.38848 09 37 43.26 +00 43 47.7 23.4i 17BB233 T09 C~7xTq 2017 03 04.39116 09 37 43.24 +00 43 47.7 23.5i 17BB233 T09 C~7xTq 2017 03 04.41073 09 37 43.15 +00 43 48.4 23.6i 17BB233 T09 C~7xTq 2017 03 04.41351 09 37 43.14 +00 43 48.0 23.3i 17BB233 T09 C~7xTq 2017 03 04.42430 09 37 43.08 +00 43 48.7 23.4i 17BB233 T09 C~7xTq 2017 04 02.033707 09 35 57.650 +00 57 07.52 23.6r 17BB233 W84 C~8HK0 2017 04 02.036923 09 35 57.634 +00 57 07.56 23.8r 17BB233 W84 C~8HK0 2025 02 23.297310 10 28 53.361 -05 38 51.81 23.5G 17BB233 G37 C~8ifL 2025 02 23.344430 10 28 53.165 -05 38 50.79 17BB233 G37 C~8ifL 2025 02 23.391710 10 28 52.952 -05 38 49.34 17BB233 G37 C~8ifL
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 -0.07 0.00 0.09
2 0.0229 0.00 -0.02 0.00 -0.03
3 0.9179 0.00 0.01 0.00 -0.06
4 0.9180 0.00 -0.01 0.00 -0.20
5 0.9182 0.00 -0.01 0.00 0.01
6 1.0600 0.00 0.04 0.00 -0.09
7 1.7861 0.00 -0.09 0.00 -0.08
8 1.7862 0.00 -0.15 0.00 -0.04
9 1.7862 0.00 -0.21 0.00 0.02
10 1.7862 0.00 0.06 0.00 -0.35
11 1.7862 0.00 0.06 0.00 0.10
12 1.8598 0.00 -0.00 0.00 0.02
13 1.8599 0.00 0.09 0.00 0.23
14 1.8599 0.00 0.11 0.00 0.11
15 1.8604 0.00 0.10 0.00 -0.04
16 1.8605 0.00 0.14 0.00 -0.10
17 1.8606 0.00 -0.22 0.00 0.10
18 1.8790 0.00 0.11 0.00 -0.01
19 1.8791 0.00 -0.04 0.00 0.11
20 1.8792 0.00 0.02 0.00 0.01
21 1.8793 0.00 0.17 0.00 0.12
22 1.9748 0.00 -0.08 0.00 0.17
23 1.9748 0.00 0.10 0.00 -0.11
24 1.9748 0.00 0.05 0.00 0.07
25 1.9749 0.00 -0.06 0.00 0.00
26 1.9749 0.00 -0.08 0.00 0.17
27 1.9749 0.00 -0.04 0.00 -0.31
28 1.9749 0.00 -0.20 0.00 0.10
29 2.0533 0.00 0.10 0.00 0.08
30 2.0533 0.00 -0.00 0.00 0.04
31 9.9500 0.00 -0.37 0.00 -0.03
32 9.9501 0.00 0.08 0.00 -0.16
33 9.9502 0.00 0.28 0.00 0.14
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.
17BB233 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 67.680 67.680 67.680 ecceobj 0.422 0.422 0.422 incobj 14.313 14.313 14.313 qmin 38.187 38.190 38.198 qmax 98.348 98.271 98.435 amean 67.518 67.518 67.518 amin 66.671 66.643 66.632 amax 68.619 68.632 68.657 emean 0.420 0.420 0.420 emin 0.407 0.407 0.407 emax 0.433 0.433 0.434 imean 15.937 15.937 15.937 imin 15.405 15.415 15.412 imax 16.559 16.557 16.563 excite_mean 0.502 0.502 0.502 fracstop 1.000 1.000 1.000 cjmean 3.059 3.059 3.059 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 208.2 208.2 208.0 kozaiamp 179.9 180.0 179.9