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: 05JY185 # Created Fri Apr 26 01:12:27 2024 # Orbit generated from Bernstein formalism # Fitting 15 observations of 16 # Arc: 2.99y # First observation: 2005/05/12 # Last observation: 2008/05/07 Preliminary a, adot, b, bdot, g, gdot: -0.000001 0.021296 -0.000001 -0.000657 0.022560 0.000000 # Chi-squared of fit: 7.85 DOF: 24 RMS: 0.13 # Min/Max residuals: -0.22 0.25 # Exact a, adot, b, bdot, g, gdot: 1.527131E-05 2.136690E-02 -7.491927E-07 -6.594769E-04 2.291579E-02 1.577609E-03 # Covariance matrix: 3.7334E-13 -1.5616E-13 5.4645E-16 -5.4108E-16 9.9899E-13 1.1719E-13 -1.5616E-13 3.0124E-12 3.7047E-14 -1.0590E-13 1.0646E-11 5.2474E-11 5.4645E-16 3.7047E-14 2.6276E-13 -1.1303E-13 1.4596E-13 6.7118E-13 -5.4108E-16 -1.0590E-13 -1.1303E-13 7.9873E-14 -4.0647E-13 -1.9101E-12 9.9899E-13 1.0646E-11 1.4596E-13 -4.0647E-13 5.0792E-11 1.9983E-10 1.1719E-13 5.2474E-11 6.7118E-13 -1.9101E-12 1.9983E-10 9.4523E-10 # lat0 lon0 xBary yBary zBary JD0 -1.219783 -113.907988 0.246678 -0.020711 -0.976320 2453502.955723 # Heliocentric elements and errors Epoch: 2453500.5000 = 2005/05/10 Mean Anomaly: 92.51729 +/- 0.571 Argument of Peri: 113.43067 +/- 0.451 Long of Asc Node: 31.79060 +/- 0.012 Inclination: 2.13382 +/- 0.001 Eccentricity: 0.07076241 +/- 0.0015 Semi-Major Axis: 44.25993967 +/- 0.0398 Time of Perihelion: 2425860.6888 +/- 166.5 Perihelion: 41.12799958 +/- 0.0745 Aphelion: 47.39187975 +/- 0.0774 Period (y) 294.4587 +/- 0.40 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -18.30609339 +/- 0.0055 Ecliptic Y -40.67843563 +/- 0.0124 Ecliptic Z -0.92894857 +/- 0.0003 Ecliptic XDOT 0.00225875 +/- 0.0000 Ecliptic YDOT -0.00121237 +/- 0.0000 Ecliptic ZDOT -0.00008273 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 44.61738591 +/- 0.0115 Geocenter to KBO 43.63804104 +/- 0.0136 # Hcoef: 6.76
The following table shows the complete astrometric record for 05JY185. 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 (05JY185) followed by the observatory code and reference code for the source of the astrometry.
2005 05 12.45498 16 15 55.86 -22 31 32.0 23.8g 05JY185 568 C74770 2005 05 12.48126 16 15 55.74 -22 31 31.7 23.9g 05JY185 568 C74770 2005 05 12.51256 16 15 55.59 -22 31 31.5 23.8g 05JY185 568 C74770 2005 05 13.53618 16 15 50.81 -22 31 20.5 23.9g 05JY185 568 C74770 2006 05 25.39509 16 20 07.48 -22 44 02.9 23.2r 05JY185 568 C~0VE1 2006 05 25.43196 16 20 07.30 -22 44 02.5 23.0r 05JY185 568 C~0VE1 2006 05 25.48307 16 20 07.05 -22 44 01.9 22.7r 05JY185 568 C~0VE1 2006 05 26.46461 16 20 02.30 -22 43 51.3 05JY185 568 C~0VE1 2007 05 15.36569 16 26 09.34 -22 59 57.9 05JY185 675 C~0VE1 2007 05 15.42089 16 26 09.08 -22 59 57.4 05JY185 675 C~0VE1 2007 05 16.32251 16 26 04.82 -22 59 48.7 05JY185 675 C~0VE1 2008 05 03.39351 16 32 12.22 -23 14 55.8 05JY185 695 C~0VE1 2008 05 03.43565 16 32 12.04 -23 14 55.3 05JY185 695 C~0VE1 2008 05 07.49087 16 31 54.45 -23 14 23.5 23.0r 05JY185 568 C~0VE1 2008 05 07.51401 16 31 54.37 -23 14 23.6 23.1r 05JY185 568 C~0VE1 2008 05 07.53734 16 31 54.24 -23 14 23.3 23.0r 05JY185 568 C~0VE1
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 -0.11 0.00 0.06
2 0.0001 -1.69 -0.04 0.01 0.09
3 0.0002 -3.77 -0.03 -0.16 -0.04
4 0.0030 -70.90 0.25 -0.89 0.05
5 1.0347 3561.16 -0.13 -143.92 -0.02
6 1.0348 3558.64 -0.10 -143.95 -0.02
7 1.0350 3555.13 -0.08 -143.93 0.02
8 1.0377 3488.55 0.13 -144.50 -0.12
9 2.0066 8655.91 0.16 -273.38 -0.05
10 2.0068 8652.28 0.21 -273.45 -0.08
11 2.0092 8592.71 -0.22 -274.13 -0.09
12 2.9759 13755.39 -0.21 -398.37 -0.03
13 2.9760 13752.85 -0.20 -398.24 0.15
14 2.9871 13507.31 0.18 -402.54 0.12
15 2.9872 13506.23 ( 0.55) -402.80 ( -0.11)
16 2.9872 13504.41 0.20 -402.77 -0.06
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.
05JY185 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.821 43.940 43.703 ecceobj 0.069 0.065 0.072 incobj 2.144 2.144 2.144 qmin 40.003 40.294 39.690 qmax 48.445 48.399 48.623 amean 44.121 44.241 44.007 amin 43.770 43.882 43.650 amax 44.496 44.601 44.384 emean 0.074 0.070 0.078 emin 0.057 0.054 0.061 emax 0.090 0.086 0.096 imean 1.962 1.989 1.930 imin 1.144 1.213 1.073 imax 2.638 2.612 2.682 excite_mean 0.082 0.078 0.085 fracstop 1.000 1.000 1.000 cjmean 3.095 3.097 3.093 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 168.9 161.5 167.8 kozaiamp 180.0 180.0 180.0