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: 02CZ248 # Created Fri Apr 19 01:10:41 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 27 observations of 27 # Arc: 16.84y # First observation: 2002/02/06 # Last observation: 2018/12/09 # Chi-squared of fit: 34.42 DOF: 48 RMS: 0.20 # Min/Max residuals: -0.49 0.78 # Exact a, adot, b, bdot, g, gdot: 1.939606E-05 3.459768E-02 5.127850E-07 3.302591E-03 2.910068E-02 7.446800E-03 # Covariance matrix: 2.7802E-13 -7.4030E-14 1.3103E-14 -5.6411E-15 -8.1086E-15 -1.0468E-13 -7.4030E-14 2.9780E-14 -6.1399E-15 2.6417E-15 2.5852E-14 4.8578E-14 1.3103E-14 -6.1399E-15 1.3647E-13 -1.3998E-14 -8.4401E-15 -1.1030E-14 -5.6411E-15 2.6417E-15 -1.3998E-14 2.6257E-15 3.6124E-15 4.7445E-15 -8.1086E-15 2.5852E-14 -8.4401E-15 3.6124E-15 2.9687E-13 6.1179E-14 -1.0468E-13 4.8578E-14 -1.1030E-14 4.7445E-15 6.1179E-14 8.6949E-14 # lat0 lon0 xBary yBary zBary JD0 -0.364243 131.309303 -0.105179 -0.006291 -0.977619 2452311.671653 # Heliocentric elements and errors Epoch: 2452312.5000 = 2002/02/07 Mean Anomaly: 18.90471 +/- 0.004 Argument of Peri: 311.38724 +/- 0.006 Long of Asc Node: 135.18107 +/- 0.000 Inclination: 5.45938 +/- 0.000 Eccentricity: 0.39632600 +/- 0.0001 Semi-Major Axis: 53.70466024 +/- 0.0068 Time of Perihelion: 2444763.5951 +/- 2.2 Perihelion: 32.42010684 +/- 0.0051 Aphelion: 74.98921364 +/- 0.0099 Period (y) 393.5738 +/- 0.07 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -23.40731412 +/- 0.0004 Ecliptic Y 26.48189531 +/- 0.0005 Ecliptic Z -0.21843613 +/- 0.0000 Ecliptic XDOT -0.00291732 +/- 0.0000 Ecliptic YDOT -0.00162165 +/- 0.0000 Ecliptic ZDOT 0.00030647 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 35.34446000 +/- 0.0005 Geocenter to KBO 34.36335348 +/- 0.0006 # Hcoef: 8.13
The following table shows the complete astrometric record for 02CZ248. 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 (02CZ248) followed by the observatory code and reference code for the source of the astrometry.
2002 02 06.17091 08 54 38.84 +17 02 05.7 22.7R 02CZ248 695 Cf2784 2002 02 06.26085 08 54 38.31 +17 02 08.1 02CZ248 695 Cf2784 2002 02 07.19196 08 54 33.08 +17 02 30.8 02CZ248 695 Cf2784 2002 03 08.33434 08 52 04.78 +17 13 37.8 22.6R 02CZ248 568 Cf2784 2002 03 08.41149 08 52 04.39 +17 13 39.2 02CZ248 568 Cf2784 2005 02 10.31064 09 18 10.53 +15 54 56.4 23.9g 02CZ248 568 C~0Wz6 2005 02 10.39362 09 18 10.07 +15 54 58.6 23.9g 02CZ248 568 C~0Wz6 2005 02 10.43316 09 18 09.85 +15 54 59.6 24.1g 02CZ248 568 C~0Wz6 2005 04 12.25869 09 14 09.04 +16 14 52.8 23.9i 02CZ248 568 C~0Wz6 2005 04 12.33944 09 14 08.92 +16 14 53.5 24.5i 02CZ248 568 C~0Wz6 2005 04 12.36705 09 14 08.87 +16 14 53.7 24.0i 02CZ248 568 C~0Wz6 2006 02 03.47935 09 26 28.57 +15 27 19.1 02CZ248 568 C85019 2006 02 06.33077 09 26 13.16 +15 28 37.0 23.0r 02CZ248 568 C85019 2006 02 06.37156 09 26 12.95 +15 28 38.6 22.8r 02CZ248 568 C85019 2006 02 06.40970 09 26 12.73 +15 28 39.5 23.4r 02CZ248 568 C85019 2006 11 23.53862 09 37 48.70 +14 40 30.9 02CZ248 695 C~0Wz6 2006 11 25.48772 09 37 48.73 +14 40 36.2 02CZ248 695 C~0Wz6 2007 02 14.48383 09 33 00.64 +15 07 21.4 23.3r 02CZ248 568 C~0Wz6 2007 02 14.51775 09 33 00.45 +15 07 22.2 23.5r 02CZ248 568 C~0Wz6 2007 02 14.55049 09 33 00.27 +15 07 23.2 23.6r 02CZ248 568 C~0Wz6 2007 02 15.49488 09 32 55.24 +15 07 49.3 23.3r 02CZ248 568 C~0Wz6 2013 03 13.25556 10 12 37.61 +12 43 25.1 23.9R 02CZ248 695 C~0ucs 2013 03 14.21369 10 12 33.25 +12 43 49.7 02CZ248 695 C~0ucs 2013 03 14.36419 10 12 32.56 +12 43 53.7 02CZ248 695 C~0ucs 2018 12 09.522690 10 54 31.06 +09 27 13.3 25.1r 02CZ248 568 C~2rbJ 2018 12 09.562350 10 54 31.07 +09 27 13.4 24.7r 02CZ248 568 C~2rbJ 2018 12 09.604060 10 54 31.08 +09 27 13.3 24.8r 02CZ248 568 C~2rbJ
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 0.29
2 0.0002 0.00 -0.28 0.00 0.41
3 0.0028 0.00 -0.13 0.00 -0.23
4 0.0826 0.00 0.78 0.00 0.06
5 0.0828 0.00 -0.02 0.00 -0.04
6 3.0120 0.00 0.12 0.00 0.04
7 3.0122 0.00 0.14 0.00 -0.01
8 3.0124 0.00 0.14 0.00 -0.08
9 3.1789 0.00 -0.26 0.00 0.18
10 3.1791 0.00 -0.16 0.00 0.24
11 3.1792 0.00 -0.27 0.00 0.22
12 3.9926 0.00 -0.22 0.00 0.15
13 4.0004 0.00 -0.15 0.00 -0.49
14 4.0005 0.00 0.07 0.00 -0.02
15 4.0007 0.00 -0.08 0.00 -0.17
16 4.7950 0.00 -0.03 0.00 -0.10
17 4.8003 0.00 0.05 0.00 0.09
18 5.0221 0.00 0.05 0.00 -0.13
19 5.0222 0.00 -0.04 0.00 -0.27
20 5.0223 0.00 -0.07 0.00 -0.17
21 5.0248 0.00 0.05 0.00 -0.27
22 11.0967 0.00 0.02 0.00 0.17
23 11.0994 0.00 0.10 0.00 -0.06
24 11.0998 0.00 0.17 0.00 0.07
25 16.8387 0.00 0.04 0.00 0.14
26 16.8389 0.00 -0.02 0.00 0.13
27 16.8390 0.00 -0.07 0.00 -0.08
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.
02CZ248 quality flag:3 Type: 7:3EEEE 7:3EEEE 7:3EEEE axisobj 53.285 53.285 53.284 ecceobj 0.393 0.393 0.393 incobj 5.470 5.470 5.470 qmin 31.904 31.904 31.907 qmax 75.224 75.216 75.296 amean 52.969 52.969 52.969 amin 52.263 52.275 52.274 amax 53.828 53.834 53.852 emean 0.387 0.387 0.387 emin 0.376 0.376 0.376 emax 0.398 0.398 0.398 imean 4.103 4.102 4.099 imin 3.930 3.930 3.902 imax 4.436 4.435 4.436 excite_mean 0.393 0.393 0.393 fracstop 1.000 1.000 1.000 cjmean 3.008 3.008 3.008 libcent 0 178.4 179.1 179.8 libamp 0 91.8 91.3 89.8 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 190.1 190.0 187.7 kozaiamp 180.0 180.0 180.0