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: 00WV12 # Created Thu Apr 25 01:10:15 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 26 observations of 26 # Arc: 23.12y # First observation: 2000/11/24 # Last observation: 2024/01/09 # Chi-squared of fit: 117.96 DOF: 46 RMS: 0.38 # Min/Max residuals: -0.74 0.97 # Exact a, adot, b, bdot, g, gdot: 1.781788E-05 2.080981E-02 -6.989861E-07 4.088866E-04 2.266345E-02 1.582240E-04 # Covariance matrix: 1.2988E-13 -1.0148E-13 1.1117E-15 -2.0819E-15 4.5195E-14 -1.9554E-13 -1.0148E-13 1.6529E-13 -1.8290E-15 3.5093E-15 -8.9113E-14 3.2931E-13 1.1117E-15 -1.8290E-15 7.1439E-14 -3.6166E-15 -9.5409E-17 -3.5834E-15 -2.0819E-15 3.5093E-15 -3.6166E-15 9.8317E-16 -2.2944E-15 7.0595E-15 4.5195E-14 -8.9113E-14 -9.5409E-17 -2.2944E-15 4.2986E-13 -2.0686E-13 -1.9554E-13 3.2931E-13 -3.5834E-15 7.0595E-15 -2.0686E-13 6.6183E-13 # lat0 lon0 xBary yBary zBary JD0 -1.965867 56.223669 -0.102431 -0.033592 -0.974818 2451872.588493 # Heliocentric elements and errors Epoch: 2451872.5000 = 2000/11/24 Mean Anomaly: 161.40051 +/- 0.122 Argument of Peri: 137.91633 +/- 0.115 Long of Asc Node: 115.92942 +/- 0.002 Inclination: 2.22995 +/- 0.000 Eccentricity: 0.03084550 +/- 0.0001 Semi-Major Axis: 43.82043413 +/- 0.0056 Time of Perihelion: 2404370.0678 +/- 36.9 Perihelion: 42.46877108 +/- 0.0067 Aphelion: 45.17209717 +/- 0.0070 Period (y) 290.0836 +/- 0.06 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 24.97776915 +/- 0.0007 Ecliptic Y 37.52774771 +/- 0.0011 Ecliptic Z -1.51369287 +/- 0.0000 Ecliptic XDOT -0.00208594 +/- 0.0000 Ecliptic YDOT 0.00141934 +/- 0.0000 Ecliptic ZDOT 0.00004888 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 45.10555966 +/- 0.0010 Geocenter to KBO 44.12393398 +/- 0.0013 # Hcoef: 6.89
The following table shows the complete astrometric record for 00WV12. 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 (00WV12) followed by the observatory code and reference code for the source of the astrometry.
2000 11 24.08775 03 37 33.75 +17 23 44.7 22.7R 00WV12 809 Cc2825 2000 11 24.13052 03 37 33.57 +17 23 43.7 22.9R 00WV12 809 Cc2825 2000 11 24.17851 03 37 33.35 +17 23 43.3 22.9R 00WV12 809 Cc2825 2000 11 25.09932 03 37 29.02 +17 23 28.5 23.0R 00WV12 809 Cc2825 2000 11 25.13418 03 37 28.83 +17 23 28.2 23.1R 00WV12 809 Cc2825 2000 11 25.17721 03 37 28.63 +17 23 27.7 22.8R 00WV12 809 Cc2825 2000 12 16.24178 03 35 55.11 +17 18 30.5 00WV12 695 Cc3925 2000 12 16.28286 03 35 54.94 +17 18 30.0 00WV12 695 Cc3925 2000 12 16.32715 03 35 54.76 +17 18 29.0 23.4R 00WV12 695 Cc3925 2000 12 18.17323 03 35 47.35 +17 18 06.9 23.2R 00WV12 695 Cc3925 2000 12 18.24913 03 35 47.03 +17 18 07.1 22.9R 00WV12 695 Cc3925 2000 12 18.30520 03 35 46.84 +17 18 06.1 22.6R 00WV12 695 Cc3925 2001 09 21.37865 03 46 30.81 +17 55 49.0 00WV12 675 Ce3547 2001 09 21.44841 03 46 30.68 +17 55 48.6 22.8R 00WV12 675 Ce3547 2001 09 21.51664 03 46 30.54 +17 55 48.0 22.7R 00WV12 675 Ce3547 2001 12 12.03800 03 41 04.64 +17 37 19.6 00WV12 950 Ce3547 2001 12 12.07244 03 41 04.48 +17 37 19.3 00WV12 950 Ce3547 2001 12 12.10854 03 41 04.32 +17 37 18.9 00WV12 950 Ce3547 2001 12 12.87157 03 41 01.09 +17 37 08.7 00WV12 950 Ce3547 2002 11 11.27730 03 48 20.98 +18 02 08.1 00WV12 695 Cg5721 2002 11 12.22073 03 48 16.57 +18 01 53.8 23.8R 00WV12 695 Cg5721 2002 11 12.32984 03 48 16.05 +18 01 52.4 23.4R 00WV12 695 Cg5721 2002 11 12.39027 03 48 15.75 +18 01 51.5 23.8R 00WV12 695 Cg5721 2024 01 09.167000 05 28 41.578 +22 00 54.19 23.3G 00WV12 G37 C~7gig 2024 01 09.281020 05 28 41.055 +22 00 53.89 00WV12 G37 C~7gig 2024 01 09.395000 05 28 40.528 +22 00 53.69 00WV12 G37 C~7gig
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 -0.74 0.00 0.04
2 0.0001 0.00 -0.38 0.00 -0.30
3 0.0002 0.00 -0.23 0.00 0.04
4 0.0028 0.00 -0.30 0.00 -0.52
5 0.0029 0.00 -0.66 0.00 -0.29
6 0.0030 0.00 -0.57 0.00 -0.13
7 0.0607 0.00 0.21 0.00 -0.08
8 0.0608 0.00 0.21 0.00 -0.07
9 0.0609 0.00 0.25 0.00 -0.51
10 0.0659 0.00 0.13 0.00 -0.14
11 0.0662 0.00 -0.07 0.00 0.97
12 0.0663 0.00 0.47 0.00 0.65
13 0.8249 0.00 0.31 0.00 0.26
14 0.8251 0.00 0.48 0.00 0.44
15 0.8253 0.00 0.47 0.00 0.41
16 1.0485 0.00 0.45 0.00 -0.21
17 1.0486 0.00 0.32 0.00 -0.06
18 1.0487 0.00 0.29 0.00 0.02
19 1.0507 0.00 0.86 0.00 -0.30
20 1.9636 0.00 -0.42 0.00 -0.05
21 1.9661 0.00 -0.37 0.00 -0.22
22 1.9664 0.00 -0.37 0.00 0.00
23 1.9666 0.00 -0.56 0.00 0.01
24 23.1241 0.00 0.12 0.00 0.01
25 23.1244 0.00 0.03 0.00 -0.04
26 23.1247 0.00 -0.16 0.00 0.04
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.
00WV12 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.808 43.808 43.808 ecceobj 0.032 0.032 0.032 incobj 2.231 2.231 2.231 qmin 41.300 41.300 41.300 qmax 45.954 45.958 45.950 amean 43.522 43.522 43.522 amin 43.195 43.195 43.195 amax 43.870 43.872 43.867 emean 0.030 0.030 0.030 emin 0.013 0.013 0.013 emax 0.048 0.048 0.048 imean 1.289 1.289 1.289 imin 0.445 0.445 0.445 imax 1.921 1.921 1.921 excite_mean 0.039 0.039 0.039 fracstop 1.000 1.000 1.000 cjmean 3.094 3.094 3.094 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 180.2 180.2 180.2 kozaiamp 180.0 180.0 180.0