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: 20BQ63
# Created Sun Nov 24 02:11:01 2024
# Orbit generated from Bernstein formalism
# Fitting 25 observations of 26
# Arc: 2.97y
# First observation: 2019/04/07
# Last observation: 2022/03/26
Preliminary a, adot, b, bdot, g, gdot:
0.000066 0.024532 0.000010 -0.001343 0.023957 0.000000
# Chi-squared of fit: 123.66 DOF: 44 RMS: 0.39
# Min/Max residuals: -1.22 0.82
# Exact a, adot, b, bdot, g, gdot:
1.458539E-05 2.444899E-02 -1.268428E-06 -1.338363E-03 2.470548E-02 -2.345845E-04
# Covariance matrix:
4.7538E-13 -3.9665E-13 -7.7074E-15 1.4238E-14 -3.3956E-13 -3.3954E-12
-3.9665E-13 1.5541E-12 3.8696E-14 -8.0145E-14 -4.5512E-13 1.9464E-11
-7.7074E-15 3.8696E-14 1.8432E-13 -1.0228E-13 -1.2105E-14 5.1146E-13
1.4238E-14 -8.0145E-14 -1.0228E-13 8.5294E-14 2.8271E-14 -1.0632E-12
-3.3956E-13 -4.5512E-13 -1.2105E-14 2.8271E-14 9.4048E-13 -6.9817E-12
-3.3954E-12 1.9464E-11 5.1146E-13 -1.0632E-12 -6.9817E-12 2.5834E-10
# lat0 lon0 xBary yBary zBary JD0
0.447062 -161.939327 0.030857 0.007843 -0.999684 2458580.601981
# Heliocentric elements and errors
Epoch: 2458580.5000 = 2019/04/07
Mean Anomaly: 340.46958 +/- 0.981
Argument of Peri: 193.08844 +/- 1.062
Long of Asc Node: 25.94907 +/- 0.001
Inclination: 3.16267 +/- 0.001
Eccentricity: 0.03719587 +/- 0.0001
Semi-Major Axis: 42.97701820 +/- 0.0092
Time of Perihelion: 2464163.4273 +/- 280.4
Perihelion: 41.37845067 +/- 0.0107
Aphelion: 44.57558574 +/- 0.0112
Period (y) 281.7492 +/- 0.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -39.43964284 +/- 0.0015
Ecliptic Y -12.83714628 +/- 0.0005
Ecliptic Z 0.31576829 +/- 0.0000
Ecliptic XDOT 0.00087190 +/- 0.0000
Ecliptic YDOT -0.00256922 +/- 0.0000
Ecliptic ZDOT -0.00014873 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.47743316 +/- 0.0014
Geocenter to KBO 40.47685249 +/- 0.0016
# Hcoef: 7.62
The following table shows the complete astrometric record for 20BQ63. 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 (20BQ63) followed by the observatory code and reference code for the source of the astrometry.
2019 04 07.10118 13 07 18.67 -06 40 13.5 20BQ63 W93 C~4iTe 2019 04 07.15681 13 07 18.40 -06 40 11.8 23.5R 20BQ63 W93 C~4iTe 2019 04 07.18463 13 07 18.27 -06 40 10.7 23.2R 20BQ63 W93 C~4iTe 2020 01 30.32435 13 16 03.10 -07 37 53.9 23.7R 20BQ63 W93 C~4gaC 2020 01 30.35222 13 16 03.12 -07 37 53.1 23.6R 20BQ63 W93 C~4gaC 2020 01 31.29953 13 16 02.23 -07 37 47.7 23.3R 20BQ63 W93 C~4gaC 2020 01 31.33088 13 16 02.24 -07 37 47.6 23.8R 20BQ63 W93 C~4gaC 2020 01 31.36192 13 16 02.20 -07 37 47.7 22.7R 20BQ63 W93 C~4gaC 2020 02 01.30091 13 16 01.20 -07 37 41.7 20BQ63 W93 C~4gaC 2020 02 01.36539 13 16 01.19 -07 37 41.8 23.5R 20BQ63 W93 C~4gaC 2020 02 28.24544 13 15 01.57 -07 31 50.7 20BQ63 W93 C~4gaC 2020 02 28.28222 13 15 01.39 -07 31 49.8 20BQ63 W93 C~4gaC 2020 03 01.20628 13 14 55.12 -07 31 13.2 24.4R 20BQ63 W93 C~4gaC 2020 03 01.24589 13 14 55.02 -07 31 11.0 23.5R 20BQ63 W93 C~4gaC 2020 03 01.28328 13 14 54.88 -07 31 10.6 23.3R 20BQ63 W93 C~4gaC 2020 03 03.19854 13 14 48.36 -07 30 32.1 20BQ63 W93 C~4gaC 2020 03 03.23509 13 14 48.22 -07 30 31.1 20BQ63 W93 C~4gaC 2020 03 03.27422 13 14 48.12 -07 30 30.3 23.3R 20BQ63 W93 C~4gaC 2021 03 22.18242 13 18 41.56 -07 59 05.4 24.1R 20BQ63 W93 C~4gaC 2021 03 22.20353 13 18 41.46 -07 59 05.5 20BQ63 W93 C~4gaC 2021 03 22.22274 13 18 41.36 -07 59 05.4 23.7R 20BQ63 W93 C~4gaC 2021 03 24.16386 13 18 32.97 -07 58 16.1 20BQ63 W93 C~4iTe 2021 03 24.23225 13 18 32.72 -07 58 14.2 20BQ63 W93 C~4iTe 2022 03 26.14347 13 23 33.04 -08 33 08.6 23.1R 20BQ63 W93 C~5ahW 2022 03 26.18023 13 23 32.91 -08 33 08.2 23.0R 20BQ63 W93 C~5ahW 2022 03 26.21168 13 23 32.77 -08 33 07.4 23.5R 20BQ63 W93 C~5ahW
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 0.22 0.00 0.08
2 0.0002 -4.37 0.01 0.04 0.19
3 0.0002 -6.58 -0.12 0.32 0.50
4 0.8165 8539.13 -0.62 -247.83 -0.75
5 0.8166 8539.11 -0.21 -246.98 0.13
6 0.8192 8524.79 -0.05 -246.95 0.33
7 0.8192 8524.89 0.59 -246.81 0.50
8 0.8193 8524.38 0.60 -247.12 0.20
9 0.8219 8508.32 0.26 -247.16 0.34
10 0.8221 8508.22 ( 1.35) -247.31 ( 0.23)
11 0.8957 7553.33 -0.06 -255.93 -0.55
12 0.8958 7550.50 -0.95 -256.11 -0.70
13 0.9010 7450.21 0.02 -257.35 -1.22
14 0.9011 7448.00 -0.03 -255.88 0.29
15 0.9013 7445.92 -0.07 -256.29 -0.09
16 0.9065 7341.47 0.06 -257.18 -0.24
17 0.9066 7339.16 -0.19 -257.04 -0.06
18 0.9067 7337.48 0.35 -256.86 0.15
19 1.9578 11205.31 -0.07 -542.13 0.82
20 1.9578 11203.96 0.05 -542.78 0.19
21 1.9579 11202.54 -0.03 -543.24 -0.25
22 1.9632 11068.13 -0.17 -544.26 -0.07
23 1.9634 11063.96 0.50 -543.89 0.38
24 2.9679 16003.09 -0.47 -822.62 0.14
25 2.9680 16001.14 0.19 -822.97 -0.17
26 2.9681 15998.90 0.19 -823.00 -0.16
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.
20BQ63 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 42.616 42.650 42.583 ecceobj 0.028 0.028 0.028 incobj 3.170 3.170 3.170 qmin 40.650 40.657 40.670 qmax 45.166 45.260 45.156 amean 42.854 42.887 42.821 amin 42.523 42.559 42.495 amax 43.183 43.229 43.153 emean 0.027 0.028 0.026 emin 0.006 0.008 0.006 emax 0.047 0.047 0.046 imean 2.634 2.637 2.631 imin 1.582 1.607 1.558 imax 3.533 3.529 3.540 excite_mean 0.054 0.054 0.053 fracstop 1.000 1.000 1.000 cjmean 3.084 3.085 3.084 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 171.5 170.7 172.2 kozaiamp 180.0 179.9 180.0