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: 20BB95 # Created Mon Apr 28 01:11:19 2025 # Orbit generated from Bernstein formalism # Fitting 10 observations of 10 # Arc: 4.12y # First observation: 2020/01/24 # Last observation: 2024/03/08 Preliminary a, adot, b, bdot, g, gdot: -0.000065 0.013630 -0.000086 0.003447 0.016311 0.000000 # Chi-squared of fit: 5.33 DOF: 14 RMS: 0.13 # Min/Max residuals: -0.19 0.28 # Exact a, adot, b, bdot, g, gdot: 1.216147E-05 1.330596E-02 3.983912E-06 3.329853E-03 1.660694E-02 -8.715422E-03 # Covariance matrix: 6.6579E-13 -7.6860E-13 1.0472E-13 -1.8572E-13 -2.6171E-13 -1.2676E-11 -7.6860E-13 2.2931E-12 -4.4242E-13 7.0718E-13 -4.0237E-13 4.9056E-11 1.0472E-13 -4.4242E-13 4.1999E-13 -2.5913E-13 1.4675E-13 -1.0078E-11 -1.8572E-13 7.0718E-13 -2.5913E-13 2.9971E-13 -1.8674E-13 1.5886E-11 -2.6171E-13 -4.0237E-13 1.4675E-13 -1.8674E-13 1.0646E-12 -1.3496E-11 -1.2676E-11 4.9056E-11 -1.0078E-11 1.5886E-11 -1.3496E-11 1.1045E-09 # lat0 lon0 xBary yBary zBary JD0 11.958819 131.163039 0.132469 0.203870 -0.962488 2458872.864271 # Heliocentric elements and errors Epoch: 2458870.5000 = 2020/01/22 Mean Anomaly: 342.46668 +/- 0.150 Argument of Peri: 126.72159 +/- 0.045 Long of Asc Node: 91.83133 +/- 0.003 Inclination: 18.24284 +/- 0.001 Eccentricity: 0.67458388 +/- 0.0024 Semi-Major Axis: 117.45606509 +/- 0.6576 Time of Perihelion: 2481515.5457 +/- 34.1 Perihelion: 38.22209666 +/- 0.3532 Aphelion: 196.69003352 +/- 1.1365 Period (y) 1272.9794 +/- 10.69 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -39.31844691 +/- 0.0024 Ecliptic Y 45.16892564 +/- 0.0027 Ecliptic Z 12.47742635 +/- 0.0008 Ecliptic XDOT -0.00064309 +/- 0.0000 Ecliptic YDOT -0.00258551 +/- 0.0000 Ecliptic ZDOT 0.00023910 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 61.17073058 +/- 0.0026 Geocenter to KBO 60.21579230 +/- 0.0037 # Hcoef: 6.89
The following table shows the complete astrometric record for 20BB95. 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 (20BB95) followed by the observatory code and reference code for the source of the astrometry.
2020 01 24.36347 09 09 22.248 +28 53 10.74 24.5r 20BB95 568 C~5Jza 2020 01 24.59588 09 09 21.377 +28 53 15.26 24.4r 20BB95 568 C~5Jza 2020 12 16.31314 09 14 54.877 +28 36 55.72 24.5r 20BB95 304 C~5Jza 2020 12 17.30153 09 14 52.765 +28 37 16.29 24.3r 20BB95 304 C~5Jza 2021 01 17.24945 09 13 21.381 +28 48 10.00 24.8r 20BB95 304 C~5Jza 2021 01 18.24715 09 13 17.815 +28 48 30.38 24.5r 20BB95 304 C~5Jza 2021 12 06.34386 09 18 51.494 +28 29 51.03 24.8r 20BB95 304 C~5Jza 2021 12 07.34421 09 18 50.032 +28 30 10.70 24.6r 20BB95 304 C~5Jza 2024 03 07.13123 09 21 30.280 +28 50 03.58 24.9r 20BB95 304 C~7ulV 2024 03 08.12668 09 21 27.004 +28 50 11.98 25.0r 20BB95 304 C~7ulV
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 0.10 0.00 -0.17
2 0.0006 -12.27 0.06 0.89 -0.05
3 0.8951 4464.14 -0.11 403.70 0.01
4 0.8978 4431.31 -0.01 414.63 0.16
5 0.9826 3085.60 -0.03 665.55 -0.12
6 0.9853 3034.72 -0.19 670.55 -0.05
7 1.8672 7560.00 0.28 979.86 0.19
8 1.8699 7535.44 -0.10 992.39 0.18
9 4.1171 9153.80 -0.03 2800.40 0.03
10 4.1198 9110.26 0.03 2794.42 -0.19
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.
20BB95 quality flag:2 Type: SCATNEAR8:1EEEEEEE SCATNEAR axisobj 117.413 119.288 115.619 ecceobj 0.671 0.678 0.665 incobj 18.157 18.155 18.159 qmin 36.852 36.629 37.200 qmax 207.255 211.323 203.192 amean 118.567 120.439 116.542 amin 116.152 117.702 113.767 amax 122.702 124.665 120.768 emean 0.675 0.684 0.668 emin 0.664 0.673 0.655 emax 0.690 0.696 0.682 imean 16.648 16.106 16.785 imin 15.443 15.283 15.988 imax 17.271 16.816 17.734 excite_mean 0.734 0.738 0.727 fracstop 1.000 1.000 1.000 cjmean 3.057 3.052 3.063 libcent 0 -180.0 82.1 -180.0 libamp 0 -180.0 50.4 -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 185.2 139.4 200.9 kozaiamp 66.6 13.2 73.7