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: 24YK27 # Created Sat Feb 22 02:11:38 2025 # Orbit generated from Bernstein formalism # Fitting 24 observations of 24 # Arc: 32.02d # First observation: 2024/12/05 # Last observation: 2025/01/06 Preliminary a, adot, b, bdot, g, gdot: 0.000049 0.619757 -0.000059 -0.174666 0.210715 0.000000 # Chi-squared of fit: 25.14 DOF: 42 RMS: 0.18 # Min/Max residuals: -0.61 0.72 # Exact a, adot, b, bdot, g, gdot: 4.416262E-05 5.459658E-01 -1.287133E-05 -1.616100E-01 1.944105E-01 4.821180E-02 # Covariance matrix: 3.6117E-13 1.2594E-13 -3.5155E-15 -1.6503E-12 2.0228E-12 1.5126E-10 1.2594E-13 9.0284E-08 -8.1013E-11 -1.4152E-08 1.7162E-08 2.2230E-07 -3.5155E-15 -8.1013E-11 3.6356E-13 8.6478E-12 -1.5408E-11 -1.9915E-10 -1.6503E-12 -1.4152E-08 8.6478E-12 2.3050E-09 -2.7097E-09 -3.6871E-08 2.0228E-12 1.7162E-08 -1.5408E-11 -2.7097E-09 3.2864E-09 4.4756E-08 1.5126E-10 2.2230E-07 -1.9915E-10 -3.6871E-08 4.4756E-08 8.3092E-07 # lat0 lon0 xBary yBary zBary JD0 19.482990 112.868521 0.617488 0.253335 -0.716457 2460650.015880 # Heliocentric elements and errors Epoch: 2460650.5000 = 2024/12/06 Mean Anomaly: 359.43561 +/- 0.202 Argument of Peri: 130.30794 +/- 0.404 Long of Asc Node: 335.18553 +/- 0.018 Inclination: 22.02992 +/- 0.007 Eccentricity: 0.29323514 +/- 0.0005 Semi-Major Axis: 8.34869633 +/- 0.0046 Time of Perihelion: 2460664.3136 +/- 5.0 Perihelion: 5.90056521 +/- 0.0056 Aphelion: 10.79682744 +/- 0.0075 Period (y) 24.1233 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -1.60516233 +/- 0.0006 Ecliptic Y 5.41297624 +/- 0.0013 Ecliptic Z 1.71546438 +/- 0.0005 Ecliptic XDOT -0.00763519 +/- 0.0000 Ecliptic YDOT -0.00169480 +/- 0.0000 Ecliptic ZDOT -0.00191904 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 5.90081994 +/- 0.0012 Geocenter to KBO 5.14375468 +/- 0.0015 # Hcoef: 14.78
The following table shows the complete astrometric record for 24YK27. 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 (24YK27) followed by the observatory code and reference code for the source of the astrometry.
2024 12 05.515079 07 55 30.551 +40 39 25.48 22.0G 24YK27 F51 C~8cUC 2024 12 05.526486 07 55 30.319 +40 39 26.71 22.0G 24YK27 F51 C~8cUC 2024 12 05.537891 07 55 30.087 +40 39 27.83 22.6G 24YK27 F51 C~8cUC 2024 12 05.549405 07 55 29.854 +40 39 29.03 22.6G 24YK27 F51 C~8cUC 2024 12 20.534281 07 49 16.340 +41 01 20.93 21.2G 24YK27 F52 C~8cUC 2024 12 20.546565 07 49 15.958 +41 01 20.96 21.9G 24YK27 F52 C~8cUC 2024 12 20.558729 07 49 15.529 +41 01 22.05 21.3G 24YK27 F52 C~8cUC 2024 12 26.412168 07 46 11.480 +41 07 03.13 22.4w 24YK27 F52 C~8cUC 2024 12 26.423771 07 46 11.092 +41 07 03.76 22.2w 24YK27 F52 C~8cUC 2024 12 26.441836 07 46 10.483 +41 07 04.79 22.2w 24YK27 F52 C~8cUC 2024 12 26.620099 07 46 04.474 +41 07 12.75 22.0G 24YK27 F52 C~8cUC 2024 12 26.620733 07 46 04.438 +41 07 12.83 22.2G 24YK27 F52 C~8cUC 2024 12 30.442282 07 43 55.471 +41 09 44.07 22.5G 24YK27 F52 C~8cUC 2024 12 30.453993 07 43 55.069 +41 09 43.98 22.1G 24YK27 F52 C~8cUC 2024 12 30.465756 07 43 54.631 +41 09 44.65 22.5G 24YK27 F52 C~8cUC 2025 01 03.465628 07 41 34.145 +41 11 16.20 22.5G 24YK27 F51 C~8cUC 2025 01 03.477655 07 41 33.682 +41 11 16.31 22.4G 24YK27 F51 C~8cUC 2025 01 03.489653 07 41 33.258 +41 11 16.34 22.7G 24YK27 F51 C~8cUC 2025 01 03.501568 07 41 32.820 +41 11 16.45 23.1G 24YK27 F51 C~8cUC 2025 01 05.378501 07 40 25.621 +41 11 34.27 22.2G 24YK27 T14 C~8cUC 2025 01 05.379714 07 40 25.569 +41 11 34.28 22.8G 24YK27 T14 C~8cUC 2025 01 05.380924 07 40 25.519 +41 11 34.27 22.2G 24YK27 T14 C~8cUC 2025 01 06.530879 07 39 43.819 +41 11 37.20 22.5G 24YK27 T12 C~8cUC 2025 01 06.535009 07 39 43.668 +41 11 37.16 22.7G 24YK27 T12 C~8cUC
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 -0.06
2 0.0000 -2.84 0.03 0.67 -0.01
3 0.0001 -5.65 0.03 1.22 -0.07
4 0.0001 -8.49 0.03 1.86 -0.05
5 0.0411 -4422.22 -0.05 461.88 0.72
6 0.0412 -4426.48 0.05 461.10 -0.07
7 0.0412 -4431.45 -0.61 461.27 0.10
8 0.0572 -6541.61 -0.05 417.97 -0.13
9 0.0572 -6546.04 -0.02 417.81 -0.08
10 0.0573 -6553.00 -0.03 417.60 0.04
11 0.0578 -6621.31 0.21 413.39 -0.13
12 0.0578 -6621.73 0.04 413.40 -0.11
13 0.0682 -8084.50 0.09 308.39 0.14
14 0.0683 -8088.97 0.31 307.53 -0.30
15 0.0683 -8093.96 0.03 307.34 -0.06
16 0.0793 -9675.91 0.26 131.13 0.08
17 0.0793 -9681.09 0.01 130.38 -0.01
18 0.0793 -9685.83 0.20 129.62 -0.11
19 0.0794 -9690.73 0.18 128.92 -0.16
20 0.0845 -10443.82 -0.06 22.77 0.06
21 0.0845 -10444.40 -0.14 22.68 0.05
22 0.0845 -10444.96 -0.20 22.58 0.02
23 0.0877 -10911.27 -0.18 -50.12 0.09
24 0.0877 -10912.95 -0.15 -50.43 0.07
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.
24YK27 quality flag:1 Type: CENTAURR CENTAURR CENTAURR axisobj 8.467 9.560 7.542 ecceobj 0.303 0.345 0.271 incobj 22.033 22.330 21.701 qmin 5.835 5.887 5.497 qmax 11.092 14.329 9.587 amean 8.465 10.236 7.371 amin 8.463 9.418 7.235 amax 8.467 11.234 7.556 emean 0.307 0.306 0.224 emin 0.303 0.231 0.199 emax 0.311 0.383 0.271 imean 23.365 23.861 22.191 imin 23.120 21.067 21.131 imax 23.610 26.108 22.806 excite_mean 0.501 0.510 0.440 fracstop 0.000 0.003 0.000 cjmean 4.474 3.966 4.982 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 135.6 224.0 175.6 kozaiamp 4.6 83.2 120.6