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: 00FB8 # Created Fri Nov 22 02:08:04 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 18 observations of 18 # Arc: 14.99y # First observation: 2000/03/27 # Last observation: 2015/03/23 # Chi-squared of fit: 29.25 DOF: 30 RMS: 0.23 # Min/Max residuals: -0.41 0.44 # Exact a, adot, b, bdot, g, gdot: 1.435891E-05 2.265961E-02 6.688802E-07 -1.812904E-03 2.487761E-02 6.929106E-03 # Covariance matrix: 1.2473E-13 -3.6381E-14 -1.1063E-15 2.1438E-15 3.4962E-14 -8.8069E-14 -3.6381E-14 6.8293E-14 2.4243E-15 -5.1587E-15 4.8212E-14 2.1214E-13 -1.1063E-15 2.4243E-15 1.0747E-13 -9.6231E-15 9.7876E-16 7.9719E-15 2.1438E-15 -5.1587E-15 -9.6231E-15 4.2743E-15 -3.9880E-15 -1.6986E-14 3.4962E-14 4.8212E-14 9.7876E-16 -3.9880E-15 5.3570E-13 1.6479E-13 -8.8069E-14 2.1214E-13 7.9719E-15 -1.6986E-14 1.6479E-13 6.9853E-13 # lat0 lon0 xBary yBary zBary JD0 -0.259273 -175.162916 -0.039494 -0.004745 -1.004221 2451630.815983 # Heliocentric elements and errors Epoch: 2451630.5000 = 2000/03/27 Mean Anomaly: 83.04934 +/- 0.028 Argument of Peri: 66.50346 +/- 0.015 Long of Asc Node: 1.73939 +/- 0.000 Inclination: 4.59424 +/- 0.000 Eccentricity: 0.29922522 +/- 0.0000 Semi-Major Axis: 39.17133582 +/- 0.0041 Time of Perihelion: 2430972.6711 +/- 7.8 Perihelion: 27.45028429 +/- 0.0031 Aphelion: 50.89238736 +/- 0.0054 Period (y) 245.1663 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -41.04385564 +/- 0.0012 Ecliptic Y -3.51067644 +/- 0.0001 Ecliptic Z -0.18186665 +/- 0.0000 Ecliptic XDOT -0.00055477 +/- 0.0000 Ecliptic YDOT -0.00254234 +/- 0.0000 Ecliptic ZDOT -0.00020285 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 41.19394766 +/- 0.0012 Geocenter to KBO 40.19664663 +/- 0.0012 # Hcoef: 8.16
The following table shows the complete astrometric record for 00FB8. 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 (00FB8) followed by the observatory code and reference code for the source of the astrometry.
2000 03 27.31524 12 17 20.81 -02 09 36.6 00FB8 568 Cb2555 2000 03 27.35824 12 17 20.61 -02 09 35.1 00FB8 568 Cb2555 2000 03 29.36495 12 17 11.28 -02 08 37.1 23.9R 00FB8 568 Cb2555 2000 03 29.40952 12 17 11.06 -02 08 35.6 23.7R 00FB8 568 Cb2555 2000 03 29.45079 12 17 10.87 -02 08 34.2 00FB8 568 Cb2555 2000 03 30.35311 12 17 06.66 -02 08 07.8 24.2R 00FB8 568 Cb2555 2000 03 30.37477 12 17 06.57 -02 08 07.1 24.1R 00FB8 568 Cb2555 2000 03 30.49429 12 17 06.02 -02 08 03.5 00FB8 568 Cb2555 2000 07 28.97275 12 14 40.49 -01 53 52.0 00FB8 309 Cb7658 2000 07 28.98433 12 14 40.52 -01 53 52.5 24.0R 00FB8 309 Cb7658 2000 07 28.99543 12 14 40.57 -01 53 52.6 00FB8 309 Cb7658 2001 02 23.28811 12 24 15.89 -03 00 22.7 24.3R 00FB8 309 Cc6643 2001 02 23.37081 12 24 15.56 -03 00 20.9 24.3R 00FB8 309 Cc6643 2001 02 24.22694 12 24 12.27 -03 00 00.7 00FB8 309 Cc6643 2006 04 27.10544 12 41 48.28 -05 25 51.8 23.5R 00FB8 807 Cr3551 2006 04 28.06774 12 41 44.44 -05 25 27.4 00FB8 807 Cr3551 2015 03 23.34383 13 21 21.35 -10 20 15.7 24.2R 00FB8 695 C~1Q39 2015 03 23.46993 13 21 20.85 -10 20 13.0 00FB8 695 C~1Q39
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 -0.14 0.00 -0.35
2 0.0001 0.00 -0.09 0.00 -0.10
3 0.0056 0.00 0.13 0.00 -0.41
4 0.0057 0.00 -0.00 0.00 -0.20
5 0.0058 0.00 0.08 0.00 0.00
6 0.0083 0.00 -0.31 0.00 0.23
7 0.0084 0.00 -0.12 0.00 0.30
8 0.0087 0.00 0.10 0.00 0.44
9 0.3386 0.00 0.26 0.00 0.41
10 0.3386 0.00 0.12 0.00 0.18
11 0.3386 0.00 0.30 0.00 0.33
12 0.9116 0.00 0.08 0.00 -0.23
13 0.9119 0.00 -0.03 0.00 -0.35
14 0.9142 0.00 -0.16 0.00 -0.19
15 6.0829 0.00 -0.12 0.00 -0.29
16 6.0856 0.00 -0.07 0.00 0.12
17 14.9871 0.00 -0.17 0.00 0.13
18 14.9874 0.00 0.22 0.00 -0.02
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.
00FB8 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.150 39.150 39.150 ecceobj 0.299 0.299 0.299 incobj 4.596 4.596 4.596 qmin 27.340 27.347 27.335 qmax 52.210 52.383 52.131 amean 39.455 39.455 39.455 amin 38.966 38.967 38.983 amax 40.034 40.051 40.016 emean 0.291 0.292 0.292 emin 0.277 0.277 0.276 emax 0.306 0.308 0.306 imean 5.519 5.519 5.515 imin 4.945 4.946 4.946 imax 6.009 6.010 6.007 excite_mean 0.307 0.307 0.307 fracstop 1.000 1.000 1.000 cjmean 2.942 2.942 2.942 libcent 0 180.7 179.5 180.3 libamp 0 84.3 83.6 83.4 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 179.3 179.3 179.2 kozaiamp 179.9 180.0 179.9