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: 24FX26 # Created Mon Jul 7 01:12:09 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 16 observations of 16 # Arc: 12.08y # First observation: 2013/04/01 # Last observation: 2025/05/02 # Chi-squared of fit: 6.87 DOF: 26 RMS: 0.12 # Min/Max residuals: -0.23 0.23 # Exact a, adot, b, bdot, g, gdot: 1.565313E-05 1.929917E-02 4.756628E-06 4.945290E-03 1.931168E-02 -1.033140E-02 # Covariance matrix: 1.4352E-12 -2.6794E-13 9.9818E-14 -4.4056E-14 -1.5008E-13 -5.5638E-13 -2.6794E-13 9.0401E-14 -4.8592E-14 2.1166E-14 6.7645E-16 2.6605E-13 9.9818E-14 -4.8592E-14 1.0584E-12 -1.0773E-13 1.5718E-14 -1.6092E-13 -4.4056E-14 2.1166E-14 -1.0773E-13 1.4974E-14 -4.5190E-15 6.9906E-14 -1.5008E-13 6.7645E-16 1.5718E-14 -4.5190E-15 6.0030E-13 -4.6285E-14 -5.5638E-13 2.6605E-13 -1.6092E-13 6.9906E-14 -4.6285E-14 8.7786E-13 # lat0 lon0 xBary yBary zBary JD0 -6.363751 134.267040 -0.840912 -0.060010 -0.538758 2456383.586533 # Heliocentric elements and errors Epoch: 2456384.5000 = 2013/04/02 Mean Anomaly: 356.63402 +/- 0.005 Argument of Peri: 34.51542 +/- 0.008 Long of Asc Node: 158.34688 +/- 0.000 Inclination: 15.67484 +/- 0.000 Eccentricity: 0.83718438 +/- 0.0002 Semi-Major Axis: 251.54040739 +/- 0.2670 Time of Perihelion: 2470008.9648 +/- 2298.8 Perihelion: 40.95470676 +/- 0.0596 Aphelion: 462.12610802 +/- 0.4923 Period (y) 3989.5126 +/- 6.35 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -36.90182992 +/- 0.0014 Ecliptic Y 36.65563367 +/- 0.0015 Ecliptic Z -5.73931860 +/- 0.0002 Ecliptic XDOT -0.00100376 +/- 0.0000 Ecliptic YDOT -0.00289610 +/- 0.0000 Ecliptic ZDOT 0.00085927 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 52.32938455 +/- 0.0015 Geocenter to KBO 51.78261851 +/- 0.0021 # Hcoef: 6.88
The following table shows the complete astrometric record for 24FX26. 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 (24FX26) followed by the observatory code and reference code for the source of the astrometry.
2013 04 01.085755 08 59 26.95 +10 27 04.1 24FX26 W84 C~8vOc 2021 02 02.312127 09 43 02.80 +09 34 29.7 24FX26 W84 C~8vOc 2021 03 02.229388 09 41 14.60 +09 45 35.8 24FX26 W84 C~8vOc 2021 04 02.115897 09 39 39.98 +09 56 59.3 24FX26 W84 C~8vOc 2021 04 26.051665 09 39 06.07 +10 03 05.6 24FX26 W84 C~8vOc 2024 03 16.21637 09 57 13.957 +09 33 01.60 23.5r 24FX26 W84 C~8vOc 2024 03 17.22337 09 57 10.579 +09 33 25.68 23.7r 24FX26 W84 C~8vOc 2024 04 12.08212 09 56 01.683 +09 42 24.17 23.5r 24FX26 269 C~8vOc 2024 04 12.11732 09 56 01.598 +09 42 24.71 23.5r 24FX26 269 C~8vOc 2024 04 12.16578 09 56 01.519 +09 42 25.66 23.6r 24FX26 269 C~8vOc 2024 05 03.98162 09 55 38.545 +09 47 09.10 23.6r 24FX26 269 C~8vOc 2025 03 04.18966 10 03 48.424 +09 20 47.58 23.5r 24FX26 269 C~8vOc 2025 03 04.28875 10 03 48.049 +09 20 50.23 23.5r 24FX26 269 C~8vOc 2025 05 01.98672 10 01 23.984 +09 40 04.56 24FX26 269 C~8vOc 2025 05 02.01494 10 01 23.976 +09 40 04.85 24FX26 269 C~8vOc 2025 05 02.07883 10 01 23.932 +09 40 05.28 24FX26 269 C~8vOc
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 -0.01 0.00 -0.15
2 7.8418 0.00 0.23 0.00 0.01
3 7.9183 0.00 -0.11 0.00 0.13
4 8.0028 0.00 -0.20 0.00 0.08
5 8.0684 0.00 0.18 0.00 0.13
6 10.9572 0.00 -0.13 0.00 0.01
7 10.9600 0.00 0.10 0.00 -0.04
8 11.0308 0.00 0.10 0.00 -0.01
9 11.0309 0.00 -0.15 0.00 -0.07
10 11.0310 0.00 0.06 0.00 0.06
11 11.0907 0.00 -0.06 0.00 0.17
12 11.9236 0.00 -0.15 0.00 -0.06
13 11.9239 0.00 0.04 0.00 0.02
14 12.0846 0.00 0.01 0.00 -0.05
15 12.0847 0.00 0.13 0.00 -0.04
16 12.0849 0.00 0.01 0.00 -0.23
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.
24FX26 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 243.973 243.963 243.984 ecceobj 0.832 0.832 0.832 incobj 15.708 15.708 15.708 qmin 38.111 38.345 38.133 qmax 489.840 485.985 495.669 amean 246.383 245.285 248.443 amin 235.689 234.282 238.511 amax 265.168 263.428 268.135 emean 0.835 0.834 0.836 emin 0.823 0.823 0.825 emax 0.848 0.845 0.849 imean 14.175 14.448 14.269 imin 13.564 13.883 13.710 imax 15.074 15.074 15.074 excite_mean 0.870 0.870 0.872 fracstop 1.000 1.000 1.000 cjmean 3.176 3.175 3.176 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 57.6 51.1 55.3 kozaiamp 24.4 18.9 21.5