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: 385447 # Created Wed Dec 25 02:07:00 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 21 observations of 21 # Arc: 10.12y # First observation: 2003/08/25 # Last observation: 2013/10/06 # Chi-squared of fit: 32.78 DOF: 36 RMS: 0.22 # Min/Max residuals: -0.40 0.82 # Exact a, adot, b, bdot, g, gdot: 1.570672E-05 2.344140E-02 -1.612870E-06 -1.693973E-03 2.404801E-02 -1.456444E-04 # 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 -1.742965 -43.798776 -0.264775 -0.029765 -0.979595 2452876.568883 # Heliocentric elements and errors Epoch: 2452876.5000 = 2003/08/25 Mean Anomaly: 0.07678 +/- 0.000 Argument of Peri: 202.35002 +/- 0.000 Long of Asc Node: 114.19022 +/- 0.000 Inclination: 4.46725 +/- 0.000 Eccentricity: 0.02380389 +/- 0.0000 Semi-Major Axis: 43.59716642 +/- 0.0000 Time of Perihelion: 2452854.0750 +/- 0.0 Perihelion: 42.55938408 +/- 0.0000 Aphelion: 44.63494876 +/- 0.0000 Period (y) 287.8695 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 30.88830006 +/- 0.0000 Ecliptic Y -29.25088532 +/- 0.0000 Ecliptic Z -1.26486530 +/- 0.0000 Ecliptic XDOT 0.00182569 +/- 0.0000 Ecliptic YDOT 0.00193607 +/- 0.0000 Ecliptic ZDOT -0.00019209 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.55938504 +/- 0.0000 Geocenter to KBO 41.58353046 +/- 0.0000 # Hcoef: 6.53
The following table shows the complete astrometric record for 385447. 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 (385447) followed by the observatory code and reference code for the source of the astrometry.
2003 08 25.06814 21 16 49.19 -17 38 36.1 22.1R 385447 807 Cl2711 2003 08 25.15384 21 16 48.80 -17 38 37.9 385447 807 Cl2711 2003 10 22.11514 21 13 56.46 -17 50 44.1 23.2R 385447 695 Cl2711 2003 10 23.11041 21 13 55.76 -17 50 45.8 385447 695 Cl2711 2004 08 12.13131 21 23 14.27 -17 15 10.1 22.0R 385447 807 Cl8405 2004 08 12.23308 21 23 13.78 -17 15 12.2 385447 807 Cl8405 2004 10 12.11124 21 19 32.41 -17 31 43.4 23.6R 385447 695 Cl8405 2004 10 12.20886 21 19 32.23 -17 31 43.1 385447 695 Cl8405 2005 08 08.09498 21 29 01.88 -16 53 52.6 21.7R 385447 807 Co3932 2005 08 08.21160 21 29 01.35 -16 53 55.3 385447 807 Co3932 2005 08 09.09967 21 28 57.21 -16 54 16.0 385447 807 Co3932 2006 08 21.17719 21 33 28.84 -16 38 39.7 21.6R 385447 807 Cs2604 2006 08 21.26808 21 33 28.42 -16 38 41.9 385447 807 Cs2604 2006 08 22.17166 21 33 24.25 -16 39 02.2 385447 807 Cs2604 2007 06 23.35101 21 42 48.85 -15 56 25.7 23.3R 385447 250 S~06Ad 2007 06 23.35795 21 42 48.83 -15 56 25.8 385447 250 S~06Ad 2007 06 23.41559 21 42 48.69 -15 56 26.7 385447 250 S~06Ad 2007 06 23.42253 21 42 48.67 -15 56 26.8 385447 250 S~06Ad 2013 10 05.19265 22 08 02.12 -14 19 58.9 22.4R 385447 695 C~0zdV 2013 10 05.28549 22 08 01.80 -14 19 59.8 385447 695 C~0zdV 2013 10 06.23479 22 07 58.88 -14 20 13.8 385447 695 C~0zdV
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 -0.09 0.00 0.08
2 0.0002 0.00 -0.02 0.00 0.06
3 0.1589 0.00 0.04 0.00 -0.06
4 0.1616 0.00 0.05 0.00 -0.21
5 0.9666 0.00 -0.06 0.00 -0.17
6 0.9669 0.00 -0.12 0.00 0.04
7 1.1336 0.00 0.35 0.00 -0.08
8 1.1339 0.00 0.26 0.00 0.82
9 1.9549 0.00 -0.30 0.00 -0.28
10 1.9552 0.00 0.04 0.00 -0.25
11 1.9576 0.00 -0.00 0.00 -0.24
12 2.9900 0.00 -0.18 0.00 -0.22
13 2.9903 0.00 -0.07 0.00 -0.35
14 2.9928 0.00 -0.16 0.00 0.01
15 3.8283 0.00 0.20 0.00 0.13
16 3.8283 0.00 0.16 0.00 0.14
17 3.8285 0.00 0.19 0.00 0.16
18 3.8285 0.00 0.15 0.00 0.17
19 10.1140 0.00 0.15 0.00 -0.40
20 10.1142 0.00 -0.19 0.00 0.09
21 10.1168 0.00 0.04 0.00 0.19
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.
385447 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.915 43.915 43.915 ecceobj 0.031 0.031 0.031 incobj 4.461 4.461 4.461 qmin 41.839 41.840 41.840 qmax 46.085 46.084 46.087 amean 43.880 43.880 43.881 amin 43.537 43.536 43.539 amax 44.225 44.226 44.223 emean 0.028 0.028 0.028 emin 0.012 0.012 0.012 emax 0.043 0.042 0.043 imean 2.997 2.997 2.997 imin 2.354 2.354 2.354 imax 3.642 3.642 3.642 excite_mean 0.060 0.060 0.060 fracstop 1.000 1.000 1.000 cjmean 3.096 3.096 3.096 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 179.5 179.4 179.5 kozaiamp 180.0 180.0 180.0