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: 24CB8 # Created Tue Apr 1 01:11:34 2025 # Orbit generated from Bernstein formalism # Fitting 16 observations of 16 # Arc: 27.94d # First observation: 2024/01/19 # Last observation: 2024/02/16 Preliminary a, adot, b, bdot, g, gdot: -0.000002 0.491993 0.000001 0.179333 0.165729 0.000000 # Chi-squared of fit: 15.72 DOF: 26 RMS: 0.18 # Min/Max residuals: -0.39 0.57 # Exact a, adot, b, bdot, g, gdot: 4.456780E-05 4.440250E-01 1.802283E-05 1.815191E-01 1.589485E-01 9.246252E-02 # Covariance matrix: 3.3870E-13 9.2209E-10 1.0815E-14 -1.0626E-11 1.4495E-10 -2.9025E-10 9.2209E-10 9.2579E-06 1.1122E-10 -1.2777E-07 1.4397E-06 -4.4935E-06 1.0815E-14 1.1122E-10 2.4603E-13 -5.2907E-12 1.7096E-11 -8.4950E-11 -1.0626E-11 -1.2777E-07 -5.2907E-12 4.7908E-09 -1.8453E-08 2.8082E-07 1.4495E-10 1.4397E-06 1.7096E-11 -1.8453E-08 2.2457E-07 -5.9390E-07 -2.9025E-10 -4.4935E-06 -8.4950E-11 2.8082E-07 -5.9390E-07 1.8387E-05 # lat0 lon0 xBary yBary zBary JD0 -12.024188 129.614025 0.181439 -0.201862 -0.946931 2460328.951471 # Heliocentric elements and errors Epoch: 2460320.5000 = 2024/01/11 Mean Anomaly: 2.36028 +/- 0.132 Argument of Peri: 309.48093 +/- 1.111 Long of Asc Node: 152.69075 +/- 0.137 Inclination: 23.85078 +/- 0.123 Eccentricity: 0.74315208 +/- 0.0058 Semi-Major Axis: 27.15864380 +/- 0.5235 Time of Perihelion: 2459981.5610 +/- 16.2 Perihelion: 6.97564123 +/- 0.2078 Aphelion: 47.34164637 +/- 0.9262 Period (y) 141.5371 +/- 4.09 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -4.39335149 +/- 0.0117 Ecliptic Y 5.60467523 +/- 0.0141 Ecliptic Z -1.31057681 +/- 0.0039 Ecliptic XDOT -0.00730539 +/- 0.0000 Ecliptic YDOT -0.00316794 +/- 0.0001 Ecliptic ZDOT 0.00272629 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 7.24096218 +/- 0.0131 Geocenter to KBO 6.29134452 +/- 0.0188 # Hcoef: 13.78
The following table shows the complete astrometric record for 24CB8. 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 (24CB8) followed by the observatory code and reference code for the source of the astrometry.
2024 01 19.450670 08 35 24.848 +06 13 59.07 22.0G 24CB8 F52 C~7nEP 2024 01 19.461988 08 35 24.641 +06 14 00.94 21.6G 24CB8 F52 C~7nEP 2024 01 19.473271 08 35 24.409 +06 14 02.19 22.8G 24CB8 F52 C~7nEP 2024 01 19.484518 08 35 24.213 +06 14 04.26 22.8G 24CB8 F52 C~7nEP 2024 01 19.557191 08 35 22.782 +06 14 15.79 22.1G 24CB8 F52 C~7nEP 2024 01 19.557835 08 35 22.777 +06 14 15.86 22.0G 24CB8 F52 C~7nEP 2024 02 14.336845 08 27 23.562 +07 31 59.82 21.9w 24CB8 F51 C~7nEP 2024 02 14.350020 08 27 23.334 +07 32 02.58 22.4w 24CB8 F51 C~7nEP 2024 02 14.363197 08 27 23.113 +07 32 05.02 22.7w 24CB8 F51 C~7nEP 2024 02 14.376434 08 27 22.875 +07 32 07.79 22.0w 24CB8 F51 C~7nEP 2024 02 15.27582 08 27 07.85 +07 35 05.4 24CB8 291 C~7nEP 2024 02 15.29321 08 27 07.59 +07 35 08.8 24CB8 291 C~7nEP 2024 02 15.31062 08 27 07.23 +07 35 12.4 24CB8 291 C~7nEP 2024 02 16.34527 08 26 50.25 +07 38 37.7 24CB8 291 C~7nEP 2024 02 16.36553 08 26 49.89 +07 38 42.1 24CB8 291 C~7nEP 2024 02 16.38573 08 26 49.57 +07 38 45.9 24CB8 291 C~7nEP
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 -0.08 0.00 0.01
2 0.0000 -3.46 0.07 1.02 0.16
3 0.0001 -7.13 0.01 1.35 -0.39
4 0.0001 -10.48 0.24 2.60 0.00
5 0.0003 -34.05 -0.18 8.31 0.11
6 0.0003 -34.14 -0.06 8.36 0.11
7 0.0709 -8123.30 -0.05 2715.31 -0.04
8 0.0709 -8127.28 -0.08 2717.13 0.11
9 0.0709 -8131.08 0.08 2718.67 -0.03
10 0.0710 -8135.21 -0.08 2720.47 0.09
11 0.0734 -8396.52 0.03 2836.50 -0.12
12 0.0735 -8401.13 0.57 2838.82 -0.02
13 0.0735 -8407.22 -0.38 2840.97 -0.11
14 0.0764 -8703.68 0.15 2976.61 -0.11
15 0.0764 -8709.98 -0.27 2979.53 0.18
16 0.0765 -8715.55 0.02 2982.02 0.05
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.
24CB8 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0