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: 05CF81
# Created Sun Dec 22 02:08:48 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 23 observations of 23
# Arc: 17.16y
# First observation: 2005/02/10
# Last observation: 2022/04/08
# Chi-squared of fit: 15.02 DOF: 40 RMS: 0.14
# Min/Max residuals: -0.46 0.21
# Exact a, adot, b, bdot, g, gdot:
1.809331E-05 3.300524E-02 -6.988503E-07 2.042050E-04 2.994451E-02 8.508071E-04
# Covariance matrix:
1.7290E-13 -4.3823E-14 3.1414E-16 -2.3415E-16 9.0658E-14 -6.6937E-14
-4.3823E-14 3.0108E-14 -2.2145E-16 1.8340E-16 -5.2287E-15 5.0460E-14
3.1414E-16 -2.2145E-16 1.1307E-13 -8.2301E-15 2.5626E-16 -3.9946E-16
-2.3415E-16 1.8340E-16 -8.2301E-15 1.2746E-15 -7.4350E-17 3.2322E-16
9.0658E-14 -5.2287E-15 2.5626E-16 -7.4350E-17 4.4716E-13 -3.3784E-14
-6.6937E-14 5.0460E-14 -3.9946E-16 3.2322E-16 -3.3784E-14 8.9664E-14
# lat0 lon0 xBary yBary zBary JD0
0.202253 138.546510 -0.049693 0.003581 -0.982280 2453411.814663
# Heliocentric elements and errors
Epoch: 2453412.5000 = 2005/02/11
Mean Anomaly: 20.85366 +/- 0.019
Argument of Peri: 5.09151 +/- 0.023
Long of Asc Node: 109.70063 +/- 0.006
Inclination: 0.40595 +/- 0.000
Eccentricity: 0.06763377 +/- 0.0001
Semi-Major Axis: 36.67526382 +/- 0.0036
Time of Perihelion: 2448713.1471 +/- 4.4
Perihelion: 34.19477733 +/- 0.0042
Aphelion: 39.15575030 +/- 0.0046
Period (y) 222.1100 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -25.80307961 +/- 0.0006
Ecliptic Y 22.72041307 +/- 0.0005
Ecliptic Z 0.11785299 +/- 0.0000
Ecliptic XDOT -0.00205618 +/- 0.0000
Ecliptic YDOT -0.00221747 +/- 0.0000
Ecliptic ZDOT 0.00001901 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 34.38064788 +/- 0.0005
Geocenter to KBO 33.39512186 +/- 0.0007
# Hcoef: 8.37
The following table shows the complete astrometric record for 05CF81. 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 (05CF81) followed by the observatory code and reference code for the source of the astrometry.
2005 02 10.31392 09 24 10.51 +15 27 37.0 24.2g 05CF81 568 C~0W4f 2005 02 10.39693 09 24 10.02 +15 27 39.3 24.3g 05CF81 568 C~0W4f 2005 02 10.43646 09 24 09.78 +15 27 40.4 24.0g 05CF81 568 C~0W4f 2005 04 12.26433 09 19 45.01 +15 48 08.5 23.4i 05CF81 568 C~0W4f 2005 04 12.34493 09 19 44.85 +15 48 08.9 23.4i 05CF81 568 C~0W4f 2005 04 12.37258 09 19 44.79 +15 48 09.3 23.4i 05CF81 568 C~0W4f 2006 02 03.48337 09 32 19.31 +14 49 21.0 05CF81 568 C~0W4f 2006 02 06.33546 09 32 02.83 +14 50 42.0 23.5r 05CF81 568 C~0W4f 2006 02 06.37634 09 32 02.59 +14 50 43.1 23.5r 05CF81 568 C~0W4f 2006 02 06.41413 09 32 02.36 +14 50 44.4 23.4r 05CF81 568 C~0W4f 2007 02 14.47529 09 38 41.14 +14 18 45.1 05CF81 568 C~0W4f 2007 02 14.50923 09 38 40.95 +14 18 46.3 05CF81 568 C~0W4f 2007 02 14.54231 09 38 40.75 +14 18 47.2 05CF81 568 C~0W4f 2007 02 15.48615 09 38 35.31 +14 19 14.4 05CF81 568 C~0W4f 2013 03 13.26626 10 19 26.01 +10 44 42.8 23.3R 05CF81 695 C~0udE 2013 03 14.22581 10 19 21.06 +10 45 11.0 05CF81 695 C~0udE 2013 03 14.37616 10 19 20.28 +10 45 15.4 05CF81 695 C~0udE 2020 02 18.267130 11 09 57.227 +05 44 26.57 23.9G 05CF81 G37 C~3iN7 2020 02 18.358330 11 09 56.750 +05 44 29.48 05CF81 G37 C~3iN7 2020 02 18.409330 11 09 56.489 +05 44 31.15 05CF81 G37 C~3iN7 2022 04 08.146310 11 19 07.854 +04 47 16.12 23.9G 05CF81 G37 C~5ZVb 2022 04 08.180930 11 19 07.703 +04 47 17.19 05CF81 G37 C~5ZVb 2022 04 08.216160 11 19 07.548 +04 47 18.41 05CF81 G37 C~5ZVb
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 0.20
2 0.0002 0.00 -0.03 0.00 0.19
3 0.0003 0.00 -0.10 0.00 0.20
4 0.1669 0.00 0.21 0.00 0.12
5 0.1671 0.00 0.11 0.00 -0.12
6 0.1672 0.00 -0.01 0.00 0.06
7 0.9806 0.00 -0.30 0.00 -0.46
8 0.9884 0.00 -0.04 0.00 -0.17
9 0.9885 0.00 -0.03 0.00 -0.23
10 0.9886 0.00 -0.13 0.00 -0.01
11 2.0100 0.00 0.04 0.00 -0.13
12 2.0101 0.00 0.18 0.00 0.09
13 2.0102 0.00 0.09 0.00 0.04
14 2.0128 0.00 0.12 0.00 -0.01
15 8.0847 0.00 -0.03 0.00 0.03
16 8.0874 0.00 -0.08 0.00 0.16
17 8.0878 0.00 -0.00 0.00 0.20
18 15.0197 0.00 0.16 0.00 -0.05
19 15.0200 0.00 0.06 0.00 -0.08
20 15.0201 0.00 0.09 0.00 -0.05
21 17.1549 0.00 -0.19 0.00 -0.12
22 17.1550 0.00 -0.06 0.00 -0.04
23 17.1551 0.00 0.05 0.00 0.17
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.
05CF81 quality flag:3 Type: 4:3E 4:3E 4:3E axisobj 36.507 36.507 36.507 ecceobj 0.065 0.065 0.065 incobj 0.406 0.406 0.406 qmin 33.545 33.545 33.545 qmax 39.658 39.656 39.660 amean 36.487 36.487 36.487 amin 36.194 36.194 36.193 amax 36.803 36.804 36.803 emean 0.058 0.058 0.058 emin 0.037 0.037 0.037 emax 0.078 0.078 0.078 imean 2.383 2.383 2.383 imin 0.268 0.268 0.267 imax 3.691 3.691 3.691 excite_mean 0.073 0.073 0.073 fracstop 1.000 1.000 1.000 cjmean 3.021 3.021 3.021 libcent 0 180.9 180.8 180.9 libamp 0 46.1 46.1 46.2 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 180.9 180.9 180.8 kozaiamp 179.9 180.0 180.0