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: 24FZ26 # Created Mon Jul 7 01:12:09 2025 # Orbit generated from Bernstein formalism # Fitting 9 observations of 9 # Arc: 1.12y # First observation: 2024/03/16 # Last observation: 2025/04/30 Preliminary a, adot, b, bdot, g, gdot: 0.000025 0.011528 -0.000002 -0.001358 0.016824 0.000000 # Chi-squared of fit: 2.37 DOF: 12 RMS: 0.09 # Min/Max residuals: -0.20 0.24 # Exact a, adot, b, bdot, g, gdot: 1.056900E-05 1.157836E-02 -9.797025E-07 -1.364922E-03 1.683563E-02 1.511719E-03 # Covariance matrix: 7.4177E-13 9.7949E-13 -1.9568E-14 -1.8727E-13 2.1522E-12 1.5130E-10 9.7949E-13 6.1863E-12 -5.6804E-14 -7.7129E-13 7.1516E-12 6.3064E-10 -1.9568E-14 -5.6804E-14 3.2966E-13 -3.2431E-13 -1.0070E-13 -6.5707E-12 -1.8727E-13 -7.7129E-13 -3.2431E-13 7.8216E-13 -1.0172E-12 -8.8285E-11 2.1522E-12 7.1516E-12 -1.0070E-13 -1.0172E-12 1.1288E-11 8.2355E-10 1.5130E-10 6.3064E-10 -6.5707E-12 -8.8285E-11 8.2355E-10 7.2164E-08 # lat0 lon0 xBary yBary zBary JD0 -4.010387 151.496746 -0.415853 -0.063956 -0.909562 2460385.726711 # Heliocentric elements and errors Epoch: 2460380.5000 = 2024/03/11 Mean Anomaly: 144.58143 +/- 3.158 Argument of Peri: 51.32586 +/- 3.070 Long of Asc Node: 301.51160 +/- 0.018 Inclination: 7.77603 +/- 0.004 Eccentricity: 0.28998305 +/- 0.0062 Semi-Major Axis: 47.98253128 +/- 0.1602 Time of Perihelion: 2411623.9278 +/- 1036.8 Perihelion: 34.06841066 +/- 0.3205 Aphelion: 61.89665191 +/- 0.3639 Period (y) 332.3785 +/- 1.66 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -53.06286212 +/- 0.0104 Ecliptic Y 28.34829262 +/- 0.0057 Ecliptic Z -4.15420191 +/- 0.0008 Ecliptic XDOT -0.00110583 +/- 0.0000 Ecliptic YDOT -0.00153857 +/- 0.0000 Ecliptic ZDOT -0.00023855 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 60.30381765 +/- 0.0095 Geocenter to KBO 59.39783558 +/- 0.0119 # Hcoef: 6.09
The following table shows the complete astrometric record for 24FZ26. 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 (24FZ26) followed by the observatory code and reference code for the source of the astrometry.
2024 03 16.22591 10 08 18.834 +07 11 30.57 23.9r 24FZ26 W84 C~8vOc 2024 03 17.23409 10 08 15.781 +07 11 48.70 23.8r 24FZ26 W84 C~8vOc 2024 04 12.07236 10 07 10.909 +07 18 39.42 23.9r 24FZ26 269 C~8vOc 2024 04 12.15865 10 07 10.744 +07 18 40.54 23.8r 24FZ26 269 C~8vOc 2024 05 03.98822 10 06 42.084 +07 22 25.75 23.9r 24FZ26 269 C~8vOc 2025 03 04.21440 10 11 21.102 +06 49 20.44 23.7r 24FZ26 269 C~8vOc 2025 03 04.29515 10 11 20.828 +06 49 22.13 23.8r 24FZ26 269 C~8vOc 2025 04 29.17123 10 09 08.439 +07 03 32.60 24FZ26 G37 C~8vOc 2025 04 30.21576 10 09 07.414 +07 03 41.63 24FZ26 G37 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 0.06 0.00 -0.06
2 0.0028 -48.91 -0.08 0.96 -0.04
3 0.0735 -1097.01 -0.01 45.58 0.02
4 0.0737 -1099.70 0.08 45.76 0.02
5 0.1335 -1578.06 -0.05 106.67 0.02
6 0.9664 3008.68 0.06 -286.31 0.08
7 0.9667 3004.27 -0.05 -286.17 0.24
8 1.1196 859.43 -0.05 -186.99 -0.08
9 1.1225 841.97 0.04 -183.92 -0.20
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.
24FZ26 quality flag:2 Type: 2:1E SCATNEAR 2:1E axisobj 48.071 48.613 47.740 ecceobj 0.290 0.307 0.278 incobj 7.776 7.783 7.769 qmin 33.593 32.727 33.439 qmax 63.122 67.728 62.719 amean 47.797 49.220 47.797 amin 47.079 47.945 47.259 amax 48.641 50.761 48.449 emean 0.283 0.315 0.275 emin 0.266 0.291 0.248 emax 0.299 0.339 0.299 imean 9.220 10.287 8.872 imin 8.811 8.698 7.552 imax 9.713 11.865 10.067 excite_mean 0.325 0.362 0.315 fracstop 1.000 1.000 1.000 cjmean 3.015 2.999 3.023 libcent 0 180.3 -180.0 282.6 libamp 0 155.8 -180.0 28.8 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 166.0 182.4 180.7 kozaiamp 180.0 180.0 180.0