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: 04PX117 # Created Sun Nov 24 02:08:37 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 20 observations of 20 # Arc: 19.06y # First observation: 2004/08/15 # Last observation: 2023/09/06 # Chi-squared of fit: 7.65 DOF: 34 RMS: 0.11 # Min/Max residuals: -0.26 0.20 # Exact a, adot, b, bdot, g, gdot: 1.348916E-05 1.994279E-02 -8.041820E-07 -1.269571E-03 2.215062E-02 1.741545E-03 # Covariance matrix: 1.3744E-13 -3.4215E-14 -1.7385E-15 1.7019E-15 -2.4169E-14 -7.1394E-14 -3.4215E-14 2.8856E-14 1.6851E-15 -1.7118E-15 4.7434E-14 7.1514E-14 -1.7385E-15 1.6851E-15 1.1036E-13 -7.6749E-15 1.1760E-15 4.5405E-15 1.7019E-15 -1.7118E-15 -7.6749E-15 1.6523E-15 -2.3852E-15 -4.5253E-15 -2.4169E-14 4.7434E-14 1.1760E-15 -2.3852E-15 4.9271E-13 9.4181E-14 -7.1394E-14 7.1514E-14 4.5405E-15 -4.5253E-15 9.4181E-14 1.8945E-13 # lat0 lon0 xBary yBary zBary JD0 -0.900485 -46.534050 -0.166222 -0.015706 -1.003015 2453232.858973 # Heliocentric elements and errors Epoch: 2453232.5000 = 2004/08/15 Mean Anomaly: 111.27761 +/- 0.055 Argument of Peri: 71.87818 +/- 0.042 Long of Asc Node: 120.11051 +/- 0.001 Inclination: 3.75237 +/- 0.000 Eccentricity: 0.10281627 +/- 0.0000 Semi-Major Axis: 44.11760683 +/- 0.0049 Time of Perihelion: 2420148.2252 +/- 17.2 Perihelion: 39.58159925 +/- 0.0048 Aphelion: 48.65361441 +/- 0.0057 Period (y) 293.0395 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 31.85983231 +/- 0.0010 Ecliptic Y -33.37377992 +/- 0.0010 Ecliptic Z -0.70950190 +/- 0.0000 Ecliptic XDOT 0.00193347 +/- 0.0000 Ecliptic YDOT 0.00153428 +/- 0.0000 Ecliptic ZDOT -0.00016018 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 46.14494587 +/- 0.0010 Geocenter to KBO 45.14543764 +/- 0.0014 # Hcoef: 6.46
The following table shows the complete astrometric record for 04PX117. 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 (04PX117) followed by the observatory code and reference code for the source of the astrometry.
2004 08 15.35823 21 04 48.56 -17 38 34.4 23.3g 04PX117 568 C~0VDs 2004 08 15.38952 21 04 48.41 -17 38 34.9 23.2g 04PX117 568 C~0VDs 2004 08 15.42170 21 04 48.27 -17 38 35.6 23.0g 04PX117 568 C~0VDs 2004 08 16.33053 21 04 44.30 -17 38 53.0 23.5g 04PX117 568 C~0VDs 2004 10 04.27709 21 01 58.77 -17 50 38.8 22.6i 04PX117 568 C~0VDs 2004 10 04.32954 21 01 58.67 -17 50 39.4 22.6i 04PX117 568 C~0VDs 2004 10 04.38195 21 01 58.55 -17 50 39.8 22.8i 04PX117 568 C~0VDs 2005 07 30.37214 21 10 39.25 -17 17 30.7 23.3R 04PX117 568 C~0VDs 2005 07 30.40485 21 10 39.11 -17 17 31.5 23.4R 04PX117 568 C~0VDs 2005 07 30.44365 21 10 38.95 -17 17 32.3 23.6R 04PX117 568 C~0VDs 2005 07 31.41751 21 10 34.70 -17 17 51.9 22.7r 04PX117 568 C~0VDs 2006 07 20.43544 21 15 59.81 -16 57 59.9 04PX117 568 C~0VDs 2006 07 20.46186 21 15 59.70 -16 58 00.3 23.2r 04PX117 568 C~0VDs 2006 07 20.48828 21 15 59.59 -16 58 00.9 23.0r 04PX117 568 C~0VDs 2013 10 06.19109 21 42 38.37 -15 21 29.1 22.6R 04PX117 695 C~0zda 2013 10 07.16513 21 42 36.00 -15 21 39.8 04PX117 695 C~0zda 2013 10 07.26769 21 42 35.73 -15 21 41.0 04PX117 695 C~0zda 2023 09 06.162010 22 27 22.679 -11 59 29.94 22.8G 04PX117 G37 C~7APT 2023 09 06.208150 22 27 22.489 -11 59 30.83 04PX117 G37 C~7APT 2023 09 06.246830 22 27 22.321 -11 59 31.76 04PX117 G37 C~7APT
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 0.16 0.00 0.02
2 0.0001 0.00 -0.00 0.00 0.13
3 0.0002 0.00 0.04 0.00 0.05
4 0.0027 0.00 -0.26 0.00 0.06
5 0.1367 0.00 0.10 0.00 0.02
6 0.1368 0.00 0.16 0.00 -0.18
7 0.1370 0.00 -0.08 0.00 -0.19
8 0.9555 0.00 -0.14 0.00 0.07
9 0.9556 0.00 -0.07 0.00 -0.06
10 0.9557 0.00 0.11 0.00 -0.08
11 0.9584 0.00 -0.00 0.00 -0.11
12 1.9277 0.00 0.04 0.00 -0.01
13 1.9277 0.00 0.04 0.00 0.11
14 1.9278 0.00 0.04 0.00 0.03
15 9.1412 0.00 0.06 0.00 -0.05
16 9.1439 0.00 0.06 0.00 0.20
17 9.1442 0.00 -0.20 0.00 0.13
18 19.0576 0.00 0.06 0.00 -0.17
19 19.0578 0.00 0.05 0.00 0.02
20 19.0579 0.00 -0.08 0.00 0.01
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.
04PX117 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.307 44.307 44.307 ecceobj 0.096 0.096 0.096 incobj 3.746 3.746 3.746 qmin 39.221 39.295 39.239 qmax 49.721 49.647 49.652 amean 44.326 44.327 44.326 amin 43.973 43.968 43.954 amax 44.715 44.711 44.709 emean 0.095 0.095 0.095 emin 0.079 0.078 0.079 emax 0.112 0.111 0.111 imean 2.367 2.371 2.366 imin 1.519 1.534 1.528 imax 3.129 3.124 3.124 excite_mean 0.104 0.104 0.104 fracstop 1.000 1.000 1.000 cjmean 3.092 3.092 3.092 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 183.2 184.1 183.6 kozaiamp 180.0 180.0 179.9