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: 24BW31
# Created Wed Mar 26 01:11:36 2025
# Orbit generated from Bernstein formalism
# Fitting 20 observations of 21
# Arc: 1.11y
# First observation: 2024/01/19
# Last observation: 2025/03/01
Preliminary a, adot, b, bdot, g, gdot:
0.000838 0.554580 -0.000062 0.090036 0.180499 0.000000
# Chi-squared of fit: 25.90 DOF: 34 RMS: 0.20
# Min/Max residuals: -0.59 0.36
# Exact a, adot, b, bdot, g, gdot:
4.891914E-05 5.463697E-01 9.458354E-06 8.779560E-02 1.751037E-01 2.076863E-02
# Covariance matrix:
3.5081E-13 6.5112E-12 -2.6558E-14 1.1610E-12 1.9197E-12 1.1235E-11
6.5112E-12 5.6448E-09 -2.4161E-11 1.0230E-09 9.9270E-10 1.0048E-08
-2.6558E-14 -2.4161E-11 3.2542E-13 -4.5835E-12 -4.2359E-12 -4.3022E-11
1.1610E-12 1.0230E-09 -4.5835E-12 1.8569E-10 1.7957E-10 1.8213E-09
1.9197E-12 9.9270E-10 -4.2359E-12 1.7957E-10 1.7910E-10 1.7627E-09
1.1235E-11 1.0048E-08 -4.3022E-11 1.8213E-09 1.7627E-09 1.7890E-08
# lat0 lon0 xBary yBary zBary JD0
3.506862 123.532435 0.081276 0.059877 -0.979830 2460328.755115
# Heliocentric elements and errors
Epoch: 2460320.5000 = 2024/01/11
Mean Anomaly: 0.35237 +/- 0.004
Argument of Peri: 14.80712 +/- 0.033
Long of Asc Node: 104.86119 +/- 0.001
Inclination: 9.65241 +/- 0.000
Eccentricity: 0.69530042 +/- 0.0001
Semi-Major Axis: 21.93998379 +/- 0.0093
Time of Perihelion: 2460283.7595 +/- 0.4
Perihelion: 6.68510383 +/- 0.0044
Aphelion: 37.19486376 +/- 0.0162
Period (y) 102.7691 +/- 0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -3.61572591 +/- 0.0002
Ecliptic Y 5.61759759 +/- 0.0004
Ecliptic Z 0.34933897 +/- 0.0000
Ecliptic XDOT -0.00725872 +/- 0.0000
Ecliptic YDOT -0.00451203 +/- 0.0000
Ecliptic ZDOT 0.00139008 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 6.68976189 +/- 0.0003
Geocenter to KBO 5.71090020 +/- 0.0004
# Hcoef: 13.25
The following table shows the complete astrometric record for 24BW31. 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 (24BW31) followed by the observatory code and reference code for the source of the astrometry.
2024 01 19.254314 08 26 54.244 +22 46 21.68 21.0G 24BW31 G96 C~8io9 2024 01 19.259479 08 26 54.103 +22 46 22.91 20.4G 24BW31 G96 C~8io9 2024 01 19.264634 08 26 54.042 +22 46 23.34 21.1G 24BW31 G96 C~8io9 2024 01 19.269787 08 26 53.920 +22 46 24.31 21.3G 24BW31 G96 C~8io9 2024 02 11.477194 08 18 41.865 +23 31 13.42 21.7w 24BW31 F52 C~8io9 2024 02 11.490215 08 18 41.618 +23 31 14.78 21.7w 24BW31 F52 C~8io9 2024 02 11.503227 08 18 41.345 +23 31 15.92 22.0w 24BW31 F52 C~8io9 2025 02 21.235893 10 22 40.590 +18 49 04.50 21.0G 24BW31 G96 C~8io9 2025 02 21.242300 10 22 40.500 +18 49 04.90 21.7G 24BW31 G96 C~8io9 2025 02 21.252849 10 22 40.250 +18 49 06.80 22.3G 24BW31 G96 C~8io9 2025 02 23.337818 10 21 59.157 +18 53 58.07 21.6w 24BW31 F52 C~8io9 2025 02 23.349284 10 21 58.927 +18 53 59.66 21.5w 24BW31 F52 C~8io9 2025 02 23.372167 10 21 58.456 +18 54 02.91 21.2w 24BW31 F52 C~8io9 2025 02 23.481513 10 21 56.246 +18 54 17.91 21.4G 24BW31 F51 C~8io9 2025 02 23.482157 10 21 56.229 +18 54 17.95 21.3G 24BW31 F51 C~8io9 2025 02 27.317540 10 20 40.900 +19 02 51.10 21.2R 24BW31 691 C~8io9 2025 02 27.342980 10 20 40.390 +19 02 54.10 24BW31 691 C~8io9 2025 02 27.368410 10 20 39.910 +19 02 57.30 21.2R 24BW31 691 C~8io9 2025 03 01.326682 10 20 01.902 +19 07 07.61 21.8w 24BW31 F51 C~8io9 2025 03 01.339774 10 20 01.630 +19 07 09.02 21.6w 24BW31 F51 C~8io9 2025 03 01.366076 10 20 01.118 +19 07 12.42 21.8w 24BW31 F51 C~8io9
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 0.09 0.00 -0.32
2 0.0000 -2.19 -0.41 0.73 0.14
3 0.0000 -3.11 0.36 0.95 0.09
4 0.0000 -4.98 0.17 1.49 0.35
5 0.0636 -7232.73 -0.10 1046.82 -0.13
6 0.0636 -7236.35 0.03 1047.38 0.00
7 0.0637 -7240.27 -0.14 1047.65 -0.15
8 1.0924 104548.51 -0.59 20107.61 0.05
9 1.0924 104546.83 0.31 20107.39 -0.20
10 1.0924 104541.77 -0.49 20107.60 -0.05
11 1.0981 103722.04 0.06 20120.10 -0.01
12 1.0981 103717.48 0.09 20120.13 -0.00
13 1.0982 103708.14 -0.07 20120.19 0.02
14 1.0985 103664.47 0.14 20120.21 0.01
15 1.0985 103664.17 0.09 20120.13 -0.07
16 1.1090 102179.65 0.01 20124.13 0.25
17 1.1091 102169.86 0.16 20123.68 -0.05
18 1.1091 102160.47 ( 0.68) 20123.65 ( 0.07)
19 1.1145 101419.32 0.10 20118.01 0.19
20 1.1145 101414.21 0.03 20117.58 -0.14
21 1.1146 101404.22 0.17 20117.54 0.01
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.
24BW31 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 21.760 21.864 21.658 ecceobj 0.691 0.692 0.691 incobj 9.677 9.677 9.677 qmin 6.715 6.744 6.687 qmax 36.805 36.984 36.628 amean 21.760 21.864 21.657 amin 21.760 21.864 21.657 amax 21.760 21.864 21.657 emean 0.691 0.692 0.691 emin 0.691 0.692 0.691 emax 0.691 0.692 0.691 imean 8.100 8.100 8.100 imin 8.100 8.100 8.100 imax 8.100 8.100 8.100 excite_mean 0.706 0.706 0.705 fracstop 0.000 0.000 0.000 cjmean 2.600 2.596 2.603 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 14.5 14.3 14.7 kozaiamp 0.0 0.0 0.0