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: 183964
# Created Sun Dec 22 02:07:00 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 30 observations of 30
# Arc: 16.97y
# First observation: 2004/02/26
# Last observation: 2021/02/15
# Chi-squared of fit: 60.40 DOF: 54 RMS: 0.25
# Min/Max residuals: -0.48 0.99
# Exact a, adot, b, bdot, g, gdot:
1.945318E-05 3.759074E-02 3.518845E-06 6.589484E-03 3.046330E-02 -5.306383E-03
# Covariance matrix:
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
# lat0 lon0 xBary yBary zBary JD0
5.764328 130.315784 -0.441311 0.088587 -0.876910 2453061.691253
# Heliocentric elements and errors
Epoch: 2453062.5000 = 2004/02/27
Mean Anomaly: 349.26273 +/- 0.000
Argument of Peri: 56.01364 +/- 0.000
Long of Asc Node: 101.59562 +/- 0.000
Inclination: 11.29454 +/- 0.000
Eccentricity: 0.38986760 +/- 0.0000
Semi-Major Axis: 53.67624435 +/- 0.0000
Time of Perihelion: 2457346.6331 +/- 0.0
Perihelion: 32.74961605 +/- 0.0000
Aphelion: 74.60287265 +/- 0.0000
Period (y) 393.2615 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -22.04213948 +/- 0.0000
Ecliptic Y 25.29179052 +/- 0.0000
Ecliptic Z 3.29709773 +/- 0.0000
Ecliptic XDOT -0.00223421 +/- 0.0000
Ecliptic YDOT -0.00259967 +/- 0.0000
Ecliptic ZDOT 0.00054147 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 33.71063620 +/- 0.0000
Geocenter to KBO 32.82651945 +/- 0.0000
# Hcoef: 7.63
The following table shows the complete astrometric record for 183964. 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 (183964) followed by the observatory code and reference code for the source of the astrometry.
2004 02 26.19051 08 57 49.31 +23 11 54.3 22.5R 183964 695 Ck5116 2004 02 26.32057 08 57 48.59 +23 11 57.2 183964 695 Ck5116 2004 02 27.29266 08 57 43.40 +23 12 17.0 183964 695 Ck5116 2004 03 15.15737 08 56 23.85 +23 16 50.3 22.0R 183964 695 Ck5116 2004 03 15.26167 08 56 23.41 +23 16 51.2 183964 695 Ck5116 2004 12 11.477426 09 13 51.92 +22 19 43.2 22.4V 183964 645 C~2KGJ 2004 12 11.478255 09 13 51.91 +22 19 43.3 21.8V 183964 645 C~2KGJ 2004 12 11.480743 09 13 51.91 +22 19 43.5 22.6V 183964 645 C~2KGJ 2004 12 15.358090 09 13 40.74 +22 21 23.2 23.3V 183964 645 C~2KGJ 2004 12 15.358919 09 13 40.73 +22 21 22.9 22.5V 183964 645 C~2KGJ 2004 12 15.361407 09 13 40.76 +22 21 23.1 23.9V 183964 645 C~2KGJ 2005 04 10.13746 09 04 35.83 +23 04 23.4 22.7R 183964 695 Cn3122 2005 04 11.13882 09 04 34.37 +23 04 22.2 183964 695 Cn3122 2005 04 12.13805 09 04 33.04 +23 04 20.4 183964 695 Cn3122 2005 04 13.13848 09 04 31.83 +23 04 18.2 183964 695 Cn3122 2005 12 01.39172 09 23 35.16 +21 56 33.1 22.7R 183964 695 Cs2464 2005 12 01.44608 09 23 35.10 +21 56 34.4 183964 695 Cs2464 2005 12 30.37133 09 22 13.74 +22 09 19.1 22.2R 183964 688 Cp9892 2005 12 30.44705 09 22 13.42 +22 09 21.9 183964 688 Cp9892 2007 02 21.35640 09 26 54.08 +22 16 20.1 22.2R 183964 695 Cu3019 2007 02 21.46880 09 26 53.41 +22 16 23.3 183964 695 Cu3019 2007 11 08.51986 09 41 59.27 +21 06 49.8 183964 695 Cy4009 2007 11 09.49682 09 42 01.54 +21 06 55.5 183964 695 Cy4009 2008 11 05.75444 09 51 08.84 +20 41 37.9 25.6R 183964 250 S~06I3 2008 11 05.76069 09 51 08.83 +20 41 37.7 183964 250 S~06I3 2008 11 05.76763 09 51 08.88 +20 41 37.9 183964 250 S~06I3 2008 11 05.77388 09 51 08.91 +20 41 37.9 183964 250 S~06I3 2021 02 15.364510 11 39 17.706 +13 57 48.78 22.6G 183964 G37 C~4dqf 2021 02 15.448410 11 39 17.295 +13 57 52.64 183964 G37 C~4dqf 2021 02 15.515380 11 39 16.972 +13 57 55.01 183964 G37 C~4dqf
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 0.01 0.00 -0.02
2 0.0004 0.00 -0.10 0.00 0.21
3 0.0030 0.00 0.01 0.00 0.27
4 0.0492 0.00 0.27 0.00 0.11
5 0.0495 0.00 0.13 0.00 -0.24
6 0.7920 0.00 -0.01 0.00 -0.20
7 0.7920 0.00 -0.13 0.00 -0.12
8 0.7920 0.00 -0.02 0.00 0.02
9 0.8026 0.00 -0.25 0.00 -0.07
10 0.8027 0.00 -0.36 0.00 -0.39
11 0.8027 0.00 0.20 0.00 -0.26
12 1.1196 0.00 0.02 0.00 0.20
13 1.1224 0.00 -0.02 0.00 0.10
14 1.1251 0.00 0.06 0.00 -0.03
15 1.1279 0.00 0.16 0.00 -0.00
16 1.7637 0.00 -0.21 0.00 0.12
17 1.7639 0.00 -0.09 0.00 0.29
18 1.8431 0.00 0.13 0.00 0.54
19 1.8433 0.00 0.32 0.00 0.99
20 2.9874 0.00 -0.07 0.00 0.10
21 2.9878 0.00 -0.15 0.00 0.29
22 3.6997 0.00 -0.10 0.00 -0.47
23 3.7024 0.00 -0.02 0.00 -0.48
24 4.6942 0.00 0.08 0.00 -0.20
25 4.6942 0.00 -0.34 0.00 -0.42
26 4.6943 0.00 0.10 0.00 -0.24
27 4.6943 0.00 0.28 0.00 -0.26
28 16.9724 0.00 0.06 0.00 -0.02
29 16.9726 0.00 0.01 0.00 0.35
30 16.9728 0.00 0.04 0.00 -0.05
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.
183964 quality flag:3 Type: 7:3EEEE 7:3EEEE 7:3EEEE axisobj 53.080 53.080 53.080 ecceobj 0.382 0.382 0.382 incobj 11.298 11.298 11.298 qmin 32.035 32.024 31.980 qmax 75.010 75.096 75.011 amean 52.969 52.969 52.969 amin 52.300 52.314 52.319 amax 53.833 53.807 53.773 emean 0.382 0.381 0.382 emin 0.369 0.369 0.369 emax 0.395 0.396 0.395 imean 9.652 9.690 9.664 imin 8.960 8.938 8.838 imax 10.239 10.246 10.262 excite_mean 0.417 0.417 0.417 fracstop 1.000 1.000 1.000 cjmean 2.985 2.985 2.985 libcent 0 179.2 181.0 179.3 libamp 0 88.9 81.5 79.1 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 187.3 182.5 174.6 kozaiamp 130.7 123.4 112.6