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: 06AK98
# Created Sun Dec 22 02:08:52 2024
# Orbit generated from Bernstein formalism
# Fitting 24 observations of 25
# Arc: 4.80y
# First observation: 2005/04/05
# Last observation: 2010/01/21
Preliminary a, adot, b, bdot, g, gdot:
-0.000137 0.022518 -0.000028 0.007373 0.024396 0.000000
# Chi-squared of fit: 20.30 DOF: 42 RMS: 0.16
# Min/Max residuals: -0.39 0.41
# Exact a, adot, b, bdot, g, gdot:
1.518779E-05 2.246572E-02 4.685246E-06 7.328553E-03 2.402739E-02 3.137411E-03
# Covariance matrix:
3.4584E-13 -3.0365E-13 4.5058E-14 -6.7440E-14 -8.4260E-14 -2.0198E-12
-3.0365E-13 6.0088E-13 -9.3471E-14 1.4032E-13 -9.6520E-14 4.1572E-12
4.5058E-14 -9.3471E-14 1.7039E-13 -8.0670E-14 9.3676E-15 -6.9736E-13
-6.7440E-14 1.4032E-13 -8.0670E-14 7.0071E-14 -1.4363E-14 1.0464E-12
-8.4260E-14 -9.6520E-14 9.3676E-15 -1.4363E-14 2.0679E-13 -3.9270E-13
-2.0198E-12 4.1572E-12 -6.9736E-13 1.0464E-12 -3.9270E-13 3.1055E-11
# lat0 lon0 xBary yBary zBary JD0
0.211110 125.389221 -0.937441 0.001341 -0.337358 2453465.819512
# Heliocentric elements and errors
Epoch: 2453460.5000 = 2005/03/31
Mean Anomaly: 63.42175 +/- 0.031
Argument of Peri: 279.76841 +/- 0.025
Long of Asc Node: 126.03354 +/- 0.000
Inclination: 18.09610 +/- 0.000
Eccentricity: 0.15789901 +/- 0.0003
Semi-Major Axis: 44.11655571 +/- 0.0077
Time of Perihelion: 2434605.0648 +/- 7.9
Perihelion: 37.15059523 +/- 0.0130
Aphelion: 51.08251619 +/- 0.0144
Period (y) 293.0290 +/- 0.08
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -25.06708807 +/- 0.0005
Ecliptic Y 33.66063021 +/- 0.0006
Ecliptic Z 0.15355494 +/- 0.0000
Ecliptic XDOT -0.00229185 +/- 0.0000
Ecliptic YDOT -0.00120069 +/- 0.0000
Ecliptic ZDOT 0.00083644 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.96928054 +/- 0.0006
Geocenter to KBO 41.61916561 +/- 0.0008
# Hcoef: 7.70
The following table shows the complete astrometric record for 06AK98. 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 (06AK98) followed by the observatory code and reference code for the source of the astrometry.
2005 04 05.318769 08 31 12.96 +19 07 36.7 06AK98 T14 C~63RQ 2005 04 06.264504 08 31 11.93 +19 07 44.1 06AK98 T14 C~63RQ 2005 04 06.330142 08 31 11.86 +19 07 44.3 06AK98 T14 C~63RQ 2006 01 05.53253 08 42 53.61 +18 44 30.7 06AK98 568 Cq2894 2006 01 05.57222 08 42 53.43 +18 44 31.8 06AK98 568 Cq2894 2006 01 06.62466 08 42 48.66 +18 44 54.8 24.2R 06AK98 568 Cq2894 2006 01 06.64615 08 42 48.53 +18 44 55.2 24.3R 06AK98 568 Cq2894 2006 02 02.286789 08 40 38.06 +18 55 08.4 06AK98 T09 C~63RQ 2006 02 02.298161 08 40 38.00 +18 55 08.7 06AK98 T09 C~63RQ 2006 02 02.309443 08 40 37.94 +18 55 08.9 06AK98 T09 C~63RQ 2006 04 25.99054 08 36 49.64 +19 14 20.2 22.8R 06AK98 807 Cr3595 2006 04 26.98911 08 36 50.43 +19 14 20.6 06AK98 807 Cr3595 2006 04 27.99184 08 36 51.29 +19 14 20.3 06AK98 807 Cr3595 2006 05 27.256727 08 37 57.67 +19 11 49.2 06AK98 T09 C~63RQ 2006 05 27.270547 08 37 57.73 +19 11 49.2 06AK98 T09 C~63RQ 2006 11 24.502285 08 50 45.12 +18 36 21.1 23.4i 06AK98 T14 C~63RQ 2006 11 24.605841 08 50 44.98 +18 36 21.9 06AK98 T14 C~63RQ 2008 01 06.362131 08 54 14.93 +18 52 05.4 06AK98 T14 C~63RQ 2008 01 06.428517 08 54 14.65 +18 52 06.7 06AK98 T14 C~63RQ 2008 01 06.457445 08 54 14.51 +18 52 07.4 06AK98 T14 C~63RQ 2008 01 07.513187 08 54 09.87 +18 52 31.6 06AK98 T14 C~63RQ 2008 01 07.541777 08 54 09.74 +18 52 32.2 06AK98 T14 C~63RQ 2008 01 07.570298 08 54 09.61 +18 52 33.0 06AK98 T14 C~63RQ 2010 01 21.366441 09 04 17.23 +19 03 18.2 06AK98 T14 C~63RQ 2010 01 21.398834 09 04 17.06 +19 03 18.7 06AK98 T14 C~63RQ
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 0.03
2 0.0026 -15.96 -0.10 3.62 -0.01
3 0.0028 -16.97 0.02 3.57 -0.28
4 0.7535 9977.43 0.05 1163.38 -0.10
5 0.7536 9974.67 0.04 1163.77 0.14
6 0.7565 9903.10 0.41 1168.38 0.08
7 0.7565 9901.21 0.01 1168.29 -0.10
8 0.8295 7949.73 0.12 1282.18 0.01
9 0.8295 7948.83 0.07 1282.26 0.03
10 0.8295 7947.95 0.05 1282.23 -0.04
11 1.0559 4521.96 -0.39 1572.77 0.41
12 1.0586 4532.70 ( 0.07) 1575.97 ( 0.48)
13 1.0614 4544.57 0.19 1578.75 0.12
14 1.1415 5493.07 -0.04 1669.99 -0.29
15 1.1416 5493.90 0.08 1670.21 -0.11
16 1.6377 16596.24 -0.33 2472.76 0.28
17 1.6380 16594.09 -0.21 2472.99 -0.02
18 2.7544 19226.96 -0.23 4203.49 0.14
19 2.7546 19222.74 0.04 4203.65 -0.03
20 2.7547 19220.62 -0.12 4203.77 -0.04
21 2.7575 19150.03 0.12 4208.86 -0.05
22 2.7576 19148.07 0.12 4208.92 -0.11
23 2.7577 19146.06 0.07 4209.18 0.02
24 4.7968 27344.44 0.09 7296.68 0.15
25 4.7969 27341.94 0.00 7296.46 -0.22
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.
06AK98 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 44.094 44.117 44.071 ecceobj 0.163 0.164 0.162 incobj 18.122 18.122 18.122 qmin 36.367 36.192 36.256 qmax 51.963 52.125 52.131 amean 44.007 44.017 43.984 amin 43.630 43.618 43.615 amax 44.421 44.457 44.414 emean 0.154 0.157 0.156 emin 0.138 0.140 0.140 emax 0.171 0.174 0.174 imean 16.897 16.820 16.841 imin 16.265 16.208 16.236 imax 17.505 17.479 17.493 excite_mean 0.329 0.329 0.329 fracstop 1.000 1.000 1.000 cjmean 2.970 2.970 2.970 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 178.3 177.4 177.4 kozaiamp 179.9 180.0 180.0