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 Sat Feb 22 02:11:38 2025 # Orbit generated from Bernstein formalism # Fitting 50 observations of 50 # Arc: 116.68d # First observation: 2024/09/29 # Last observation: 2025/01/24 Preliminary a, adot, b, bdot, g, gdot: -0.000784 0.238219 0.000616 0.049522 0.103140 0.000000 # Chi-squared of fit: 35.90 DOF: 94 RMS: 0.15 # Min/Max residuals: -0.66 0.66 # Exact a, adot, b, bdot, g, gdot: 3.308007E-05 2.019099E-01 7.898182E-06 5.083983E-02 9.580732E-02 -7.970625E-02 # Covariance matrix: 2.2420E-13 -1.4175E-12 -2.2082E-14 3.4614E-13 2.1794E-13 1.9930E-11 -1.4175E-12 1.9194E-10 3.7500E-12 -1.4065E-11 2.9250E-11 -2.5218E-10 -2.2082E-14 3.7500E-12 1.9435E-13 -8.8912E-13 5.6385E-13 -6.0756E-12 3.4614E-13 -1.4065E-11 -8.8912E-13 5.6908E-12 -1.2149E-12 7.1716E-11 2.1794E-13 2.9250E-11 5.6385E-13 -1.2149E-12 5.7313E-12 2.5112E-11 1.9930E-11 -2.5218E-10 -6.0756E-12 7.1716E-11 2.5112E-11 3.8359E-09 # 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: 346.31337 +/- 0.016 Argument of Peri: 9.05145 +/- 0.016 Long of Asc Node: 104.44199 +/- 0.003 Inclination: 23.46189 +/- 0.001 Eccentricity: 0.63138267 +/- 0.0004 Semi-Major Axis: 23.33929887 +/- 0.0183 Time of Perihelion: 2462146.2568 +/- 0.2 Perihelion: 8.60327009 +/- 0.0109 Aphelion: 38.07532765 +/- 0.0311 Period (y) 112.7561 +/- 0.13 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 6.63174310 +/- 0.0001 Ecliptic Y 8.09886264 +/- 0.0002 Ecliptic Z -3.66402778 +/- 0.0001 Ecliptic XDOT -0.00565610 +/- 0.0000 Ecliptic YDOT 0.00200691 +/- 0.0000 Ecliptic ZDOT 0.00216006 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 11.09038737 +/- 0.0002 Geocenter to KBO 10.43761568 +/- 0.0003 # Hcoef: 10.77
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 2024 12 24.302404 03 30 00.300 -01 38 59.41 21.3w 24WT4 F51 C~8WrB 2024 12 24.315025 03 30 00.166 -01 38 58.64 21.3w 24WT4 F51 C~8WrB 2024 12 24.340274 03 29 59.873 -01 38 56.99 21.2w 24WT4 F51 C~8WrB 2024 12 30.262112 03 28 58.196 -01 31 30.04 21.2w 24WT4 F51 C~8ZtD 2024 12 30.273377 03 28 58.093 -01 31 29.38 21.0w 24WT4 F51 C~8ZtD 2024 12 30.284683 03 28 57.968 -01 31 28.09 21.2w 24WT4 F51 C~8ZtD 2024 12 30.296003 03 28 57.862 -01 31 27.24 21.2w 24WT4 F51 C~8ZtD 2025 01 03.252789 03 28 22.416 -01 25 41.29 21.1w 24WT4 F51 C~8ZtD 2025 01 03.263843 03 28 22.337 -01 25 40.41 21.1w 24WT4 F51 C~8ZtD 2025 01 03.274913 03 28 22.230 -01 25 39.35 21.2w 24WT4 F51 C~8ZtD 2025 01 03.286002 03 28 22.157 -01 25 38.32 21.3w 24WT4 F51 C~8ZtD 2025 01 24.239843 03 26 41.530 -00 45 49.18 21.5w 24WT4 F52 C~8edq 2025 01 24.252653 03 26 41.525 -00 45 47.54 21.3w 24WT4 F52 C~8edq 2025 01 24.265464 03 26 41.491 -00 45 45.73 21.6w 24WT4 F52 C~8edq
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 0.05 0.00 0.10
2 0.0000 -1.43 -0.00 -0.75 0.00
3 0.0001 -2.78 0.02 -1.40 0.01
4 0.0001 -4.20 -0.02 -1.93 0.14
5 0.0272 -1375.14 -0.05 -518.94 -0.02
6 0.0272 -1377.40 -0.09 -519.43 0.08
7 0.0628 -3760.26 -0.02 -964.20 0.11
8 0.0628 -3762.95 -0.02 -964.72 -0.13
9 0.0629 -3765.41 0.19 -965.27 -0.41
10 0.0629 -3768.18 0.10 -965.13 0.00
11 0.0845 -5464.16 -0.15 -1082.77 -0.08
12 0.0845 -5466.62 0.01 -1082.88 -0.13
13 0.0845 -5469.35 -0.08 -1082.95 -0.13
14 0.0846 -5471.85 0.06 -1082.94 -0.05
15 0.1172 -8258.98 -0.36 -1012.92 0.14
16 0.1172 -8261.34 0.08 -1012.78 0.05
17 0.1173 -8264.33 -0.10 -1012.57 0.03
18 0.1173 -8267.18 -0.13 -1012.24 0.13
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 -0.12 -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 -0.01 -487.99 -0.66
25 0.1580 -11824.83 0.12 -486.80 0.25
26 0.1580 -11825.52 0.66 -486.44 0.34
27 0.1607 -12053.03 0.02 -435.32 -0.03
28 0.1607 -12053.39 -0.06 -435.18 0.05
29 0.1607 -12053.70 -0.09 -435.12 0.04
30 0.1638 -12315.49 0.12 -372.97 -0.05
31 0.1638 -12318.64 -0.15 -372.08 0.15
32 0.1639 -12321.23 0.13 -371.49 0.03
33 0.1639 -12324.40 -0.16 -370.72 0.10
34 0.1774 -13438.70 0.04 -67.15 -0.04
35 0.1774 -13441.34 -0.04 -66.29 0.05
36 0.1775 -13443.77 0.09 -65.68 -0.11
37 0.2347 -17395.20 -0.11 1751.98 0.08
38 0.2347 -17396.99 0.04 1753.19 -0.05
39 0.2348 -17400.92 0.02 1755.81 -0.11
40 0.2510 -18206.03 -0.11 2404.29 0.04
41 0.2510 -18207.40 -0.04 2405.29 -0.25
42 0.2511 -18208.94 -0.15 2406.98 0.14
43 0.2511 -18210.31 -0.09 2408.17 0.04
44 0.2619 -18652.96 -0.16 2868.15 0.20
45 0.2620 -18653.92 0.06 2869.28 0.01
46 0.2620 -18655.25 -0.09 2870.68 0.08
47 0.2620 -18656.09 0.25 2871.94 0.01
48 0.3194 -19592.09 -0.01 5555.49 -0.03
49 0.3194 -19591.79 0.16 5557.11 -0.15
50 0.3195 -19591.87 -0.05 5559.00 -0.00
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 23.103 23.138 23.069 ecceobj 0.627 0.626 0.627 incobj 23.511 23.512 23.511 qmin 8.395 8.123 8.491 qmax 38.368 37.627 38.831 amean 21.681 20.370 22.741 amin 20.497 19.085 20.984 amax 23.597 23.138 23.773 emean 0.601 0.573 0.615 emin 0.577 0.510 0.573 emax 0.632 0.626 0.633 imean 22.631 22.547 22.539 imin 21.846 19.874 21.736 imax 23.146 25.132 23.799 excite_mean 0.714 0.690 0.724 fracstop 0.002 0.011 0.002 cjmean 2.640 2.719 2.589 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 17.9 86.3 14.8 kozaiamp 7.4 78.9 4.8