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: 05EC318
# Created Tue Dec 31 02:08:46 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 20 observations of 20
# Arc: 17.25y
# First observation: 2003/12/21
# Last observation: 2021/03/20
# Chi-squared of fit: 60.68 DOF: 34 RMS: 0.31
# Min/Max residuals: -1.35 0.68
# Exact a, adot, b, bdot, g, gdot:
1.507919E-05 2.136905E-02 1.057366E-06 6.872781E-04 2.280629E-02 1.114495E-03
# Covariance matrix:
4.1779E-13 -1.2183E-14 -3.0173E-16 -4.5732E-16 2.5192E-13 -1.4655E-14
-1.2183E-14 5.3871E-14 -3.1981E-15 1.7350E-15 8.0050E-14 1.3893E-13
-3.0173E-16 -3.1981E-15 1.2316E-13 -1.0407E-14 -5.3034E-15 -8.5633E-15
-4.5732E-16 1.7350E-15 -1.0407E-14 2.1257E-15 2.3402E-15 4.6658E-15
2.5192E-13 8.0050E-14 -5.3034E-15 2.3402E-15 3.4402E-13 2.0638E-13
-1.4655E-14 1.3893E-13 -8.5633E-15 4.6658E-15 2.0638E-13 3.7290E-13
# lat0 lon0 xBary yBary zBary JD0
1.720231 152.637033 0.879868 0.013077 -0.433560 2452994.935140
# Heliocentric elements and errors
Epoch: 2452994.5000 = 2003/12/21
Mean Anomaly: 97.57566 +/- 0.121
Argument of Peri: 301.00993 +/- 0.110
Long of Asc Node: 109.23095 +/- 0.002
Inclination: 2.53104 +/- 0.000
Eccentricity: 0.03284019 +/- 0.0000
Semi-Major Axis: 44.05706566 +/- 0.0039
Time of Perihelion: 2424043.6865 +/- 36.2
Perihelion: 42.61022329 +/- 0.0041
Aphelion: 45.50390804 +/- 0.0043
Period (y) 292.4365 +/- 0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -38.90851541 +/- 0.0010
Ecliptic Y 21.12749507 +/- 0.0005
Ecliptic Z 1.31631760 +/- 0.0000
Ecliptic XDOT -0.00129992 +/- 0.0000
Ecliptic YDOT -0.00222426 +/- 0.0000
Ecliptic ZDOT 0.00008664 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 44.29418069 +/- 0.0009
Geocenter to KBO 43.84754816 +/- 0.0011
# Hcoef: 6.34
The following table shows the complete astrometric record for 05EC318. 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 (05EC318) followed by the observatory code and reference code for the source of the astrometry.
2003 12 21.434397 10 20 55.83 +12 08 21.3 22.9V 05EC318 645 C~2JxC 2003 12 21.435226 10 20 55.84 +12 08 21.4 22.6V 05EC318 645 C~2JxC 2003 12 21.437714 10 20 55.83 +12 08 21.3 23.5V 05EC318 645 C~2JxC 2005 03 11.21948 10 20 49.40 +12 13 23.2 22.4R 05EC318 695 Cn0852 2005 03 11.27935 10 20 49.14 +12 13 24.6 05EC318 695 Cn0852 2005 03 12.27645 10 20 44.92 +12 13 48.2 05EC318 695 Cn0852 2005 06 08.96178 10 18 36.83 +12 23 22.6 22.5R 05EC318 304 Cn7066 2005 06 09.01921 10 18 36.95 +12 23 21.6 05EC318 304 Cn7066 2006 03 02.37189 10 26 15.87 +11 44 49.5 22.3R 05EC318 695 Cr3594 2006 03 02.42405 10 26 15.65 +11 44 50.9 05EC318 695 Cr3594 2006 04 26.03429 10 23 11.31 +12 01 29.3 21.7R 05EC318 807 Cr3594 2006 04 26.11970 10 23 11.14 +12 01 29.9 05EC318 807 Cr3594 2006 04 27.05742 10 23 09.59 +12 01 37.1 05EC318 807 Cr3594 2008 04 05.17697 10 33 28.57 +11 07 26.5 22.8R 05EC318 688 Cy5742 2008 04 05.23843 10 33 28.41 +11 07 27.7 05EC318 688 Cy5742 2012 03 29.23271 10 52 33.29 +09 22 36.7 22.7R 05EC318 688 C~0fDi 2012 03 29.28269 10 52 33.13 +09 22 36.6 05EC318 688 C~0fDi 2021 03 20.272520 11 34 25.929 +05 16 30.60 23.0G 05EC318 G37 C~4hkC 2021 03 20.305020 11 34 25.782 +05 16 31.61 05EC318 G37 C~4hkC 2021 03 20.333430 11 34 25.668 +05 16 32.18 05EC318 G37 C~4hkC
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 -0.10 0.00 -0.09
2 0.0000 0.00 0.07 0.00 -0.00
3 0.0000 0.00 -0.02 0.00 -0.13
4 1.2205 0.00 -0.10 0.00 -0.11
5 1.2207 0.00 -0.13 0.00 -0.13
6 1.2234 0.00 -0.33 0.00 -0.00
7 1.4662 0.00 0.26 0.00 0.14
8 1.4664 0.00 0.33 0.00 -0.06
9 2.1956 0.00 -0.02 0.00 0.08
10 2.1957 0.00 0.18 0.00 0.16
11 2.3452 0.00 -0.01 0.00 0.29
12 2.3455 0.00 -0.28 0.00 0.22
13 2.3480 0.00 -0.06 0.00 0.33
14 4.2895 0.00 0.00 0.00 0.11
15 4.2897 0.00 0.68 0.00 0.22
16 8.2705 0.00 -0.64 0.00 -0.14
17 8.2706 0.00 -0.13 0.00 -1.35
18 17.2453 0.00 0.11 0.00 0.15
19 17.2454 0.00 0.01 0.00 0.27
20 17.2454 0.00 0.13 0.00 0.07
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.