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: 24WT4 # Created Sun Dec 22 02:11:30 2024 # Orbit generated from Bernstein formalism # Fitting 36 observations of 36 # Arc: 64.82d # First observation: 2024/09/29 # Last observation: 2024/12/03 Preliminary a, adot, b, bdot, g, gdot: 0.000114 0.220660 0.000103 0.053616 0.101683 0.000000 # Chi-squared of fit: 28.88 DOF: 66 RMS: 0.16 # Min/Max residuals: -0.68 0.64 # Exact a, adot, b, bdot, g, gdot: 3.312801E-05 2.019529E-01 8.127373E-06 5.084475E-02 9.581694E-02 -7.946951E-02 # Covariance matrix: 2.9778E-13 -6.2641E-12 -1.5756E-14 -1.7652E-13 -2.0902E-13 5.4499E-11 -6.2641E-12 3.3997E-09 1.9162E-11 3.2463E-10 6.5455E-10 8.0758E-09 -1.5756E-14 1.9162E-11 2.9535E-13 5.6346E-13 3.7894E-12 5.3429E-11 -1.7652E-13 3.2463E-10 5.6346E-13 4.3558E-11 6.4842E-11 9.6225E-10 -2.0902E-13 6.5455E-10 3.7894E-12 6.4842E-11 1.3179E-10 2.0330E-09 5.4499E-11 8.0758E-09 5.3429E-11 9.6225E-10 2.0330E-09 6.1136E-08 # lat0 lon0 xBary yBary zBary JD0 -20.551351 54.776519 0.744112 -0.231946 -0.618178 2460583.082301 # Heliocentric elements and errors Epoch: 2460580.5000 = 2024/09/27 Mean Anomaly: 346.27001 +/- 0.053 Argument of Peri: 8.96062 +/- 0.092 Long of Asc Node: 104.45048 +/- 0.009 Inclination: 23.45936 +/- 0.003 Eccentricity: 0.63020082 +/- 0.0013 Semi-Major Axis: 23.28541796 +/- 0.0599 Time of Perihelion: 2462145.7801 +/- 0.7 Perihelion: 8.61092856 +/- 0.0372 Aphelion: 37.95990735 +/- 0.1021 Period (y) 112.3658 +/- 0.43 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 6.63117733 +/- 0.0007 Ecliptic Y 8.09806210 +/- 0.0010 Ecliptic Z -3.66365772 +/- 0.0004 Ecliptic XDOT -0.00565286 +/- 0.0000 Ecliptic YDOT 0.00201263 +/- 0.0000 Ecliptic ZDOT 0.00215760 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 11.08934220 +/- 0.0008 Geocenter to KBO 10.43656788 +/- 0.0013 # Hcoef: 10.88
The following table shows the complete astrometric record for 24WT4. 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 (24WT4) followed by the observatory code and reference code for the source of the astrometry.
2024 09 29.581500 03 49 13.538 -01 01 14.15 21.4G 24WT4 F52 C~8Srj 2024 09 29.592856 03 49 13.457 -01 01 15.21 21.6G 24WT4 F52 C~8Srj 2024 09 29.604204 03 49 13.379 -01 01 16.15 21.3G 24WT4 F52 C~8Srj 2024 09 29.615574 03 49 13.295 -01 01 16.99 21.5G 24WT4 F52 C~8Srj 2024 10 09.512520 03 47 52.229 -01 14 54.70 21.1G 24WT4 F51 C~8Srj 2024 10 09.526010 03 47 52.090 -01 14 55.70 21.2G 24WT4 F51 C~8Srj 2024 10 22.517637 03 45 24.242 -01 31 14.65 21.5G 24WT4 F51 C~8Srj 2024 10 22.530447 03 45 24.075 -01 31 15.77 21.4G 24WT4 F51 C~8Srj 2024 10 22.543206 03 45 23.924 -01 31 16.87 20.5G 24WT4 F51 C~8Srj 2024 10 22.555975 03 45 23.742 -01 31 17.37 21.7G 24WT4 F51 C~8Srj 2024 10 30.436615 03 43 35.491 -01 39 39.94 21.3G 24WT4 F51 C~8Srj 2024 10 30.448070 03 43 35.333 -01 39 40.61 21.4G 24WT4 F51 C~8Srj 2024 10 30.459563 03 43 35.157 -01 39 41.30 21.4G 24WT4 F51 C~8Srj 2024 10 30.471049 03 43 34.995 -01 39 41.86 21.5G 24WT4 F51 C~8Srj 2024 11 11.395332 03 40 33.162 -01 49 10.28 21.2G 24WT4 F51 C~8Srj 2024 11 11.406759 03 40 33.007 -01 49 10.68 21.0G 24WT4 F51 C~8Srj 2024 11 11.418252 03 40 32.810 -01 49 11.16 20.6G 24WT4 F51 C~8Srj 2024 11 11.429781 03 40 32.620 -01 49 11.49 20.9G 24WT4 F51 C~8Srj 2024 11 23.397459 03 37 20.617 -01 53 51.99 21.3w 24WT4 F51 C~8Srj 2024 11 23.408721 03 37 20.417 -01 53 52.16 21.2w 24WT4 F51 C~8Srj 2024 11 23.420009 03 37 20.232 -01 53 52.32 21.6w 24WT4 F51 C~8Srj 2024 11 23.564749 03 37 17.883 -01 53 53.63 21.0G 24WT4 F51 C~8Srj 2024 11 23.565565 03 37 17.866 -01 53 53.61 20.9G 24WT4 F51 C~8Srj 2024 11 26.296050 03 36 34.230 -01 54 11.50 20.9R 24WT4 691 C~8Srj 2024 11 26.301230 03 36 34.140 -01 54 10.60 21.1R 24WT4 691 C~8Srj 2024 11 26.306410 03 36 34.090 -01 54 10.40 21.1R 24WT4 691 C~8Srj 2024 11 27.281902 03 36 18.587 -01 54 12.41 21.1G 24WT4 T14 C~8Srj 2024 11 27.283111 03 36 18.561 -01 54 12.36 20.9G 24WT4 T14 C~8Srj 2024 11 27.284328 03 36 18.540 -01 54 12.37 20.9G 24WT4 T14 C~8Srj 2024 11 28.412378 03 36 00.653 -01 54 11.45 21.4w 24WT4 F52 C~8Srj 2024 11 28.424568 03 36 00.436 -01 54 11.29 21.5w 24WT4 F52 C~8Srj 2024 11 28.436781 03 36 00.259 -01 54 11.31 21.4w 24WT4 F52 C~8Srj 2024 11 28.449006 03 36 00.042 -01 54 11.28 21.2w 24WT4 F52 C~8Srj 2024 12 03.377411 03 34 43.345 -01 53 29.28 21.2w 24WT4 F51 C~8Srj 2024 12 03.388728 03 34 43.161 -01 53 29.04 21.2w 24WT4 F51 C~8Srj 2024 12 03.400008 03 34 42.995 -01 53 29.00 21.1w 24WT4 F51 C~8Srj
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 0.04 0.00 0.05
2 0.0000 -1.43 -0.01 -0.75 -0.04
3 0.0001 -2.78 0.01 -1.40 -0.04
4 0.0001 -4.20 -0.03 -1.93 0.09
5 0.0272 -1375.14 -0.05 -518.94 -0.01
6 0.0272 -1377.40 -0.09 -519.43 0.08
7 0.0628 -3760.26 0.00 -964.20 0.15
8 0.0628 -3762.95 -0.01 -964.72 -0.09
9 0.0629 -3765.41 0.21 -965.27 -0.37
10 0.0629 -3768.18 0.11 -965.13 0.04
11 0.0845 -5464.16 -0.12 -1082.77 -0.04
12 0.0845 -5466.62 0.04 -1082.88 -0.08
13 0.0845 -5469.35 -0.05 -1082.95 -0.08
14 0.0846 -5471.85 0.09 -1082.94 -0.01
15 0.1172 -8258.98 -0.33 -1012.92 0.17
16 0.1172 -8261.34 0.11 -1012.78 0.08
17 0.1173 -8264.33 -0.06 -1012.57 0.06
18 0.1173 -8267.18 -0.09 -1012.24 0.16
19 0.1501 -11140.08 0.12 -627.81 0.02
20 0.1501 -11143.05 -0.12 -627.29 0.02
21 0.1501 -11145.79 -0.13 -626.81 -0.03
22 0.1505 -11180.48 0.14 -620.05 -0.01
23 0.1505 -11180.72 0.09 -619.97 0.03
24 0.1580 -11823.72 -0.03 -487.99 -0.68
25 0.1580 -11824.83 0.09 -486.80 0.24
26 0.1580 -11825.52 0.64 -486.44 0.33
27 0.1607 -12053.03 -0.01 -435.32 -0.04
28 0.1607 -12053.39 -0.09 -435.18 0.03
29 0.1607 -12053.70 -0.12 -435.12 0.03
30 0.1638 -12315.49 0.08 -372.97 -0.07
31 0.1638 -12318.64 -0.19 -372.08 0.13
32 0.1639 -12321.23 0.09 -371.49 0.01
33 0.1639 -12324.40 -0.20 -370.72 0.08
34 0.1774 -13438.70 -0.04 -67.15 -0.08
35 0.1774 -13441.34 -0.12 -66.29 0.02
36 0.1775 -13443.77 0.01 -65.68 -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.
24WT4 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 23.050 23.235 22.870 ecceobj 0.626 0.623 0.628 incobj 23.509 23.512 23.505 qmin 8.509 8.758 8.331 qmax 41.118 37.713 37.238 amean 22.936 23.236 21.662 amin 21.534 23.236 20.433 amax 24.844 23.236 22.870 emean 0.619 0.623 0.610 emin 0.593 0.623 0.592 emax 0.655 0.623 0.628 imean 22.605 21.936 22.150 imin 21.501 21.936 21.929 imax 23.300 21.936 22.550 excite_mean 0.728 0.726 0.717 fracstop 0.002 0.000 0.001 cjmean 2.578 2.570 2.636 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 16.1 7.9 13.2 kozaiamp 6.2 0.0 3.3