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: 04PT117 # Created Tue Apr 1 01:08:40 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 22 observations of 22 # Arc: 20.13y # First observation: 2004/08/15 # Last observation: 2024/10/01 # Chi-squared of fit: 23.48 DOF: 38 RMS: 0.18 # Min/Max residuals: -0.50 0.48 # Exact a, adot, b, bdot, g, gdot: 1.548541E-05 2.217286E-02 2.614028E-07 2.870229E-04 2.346657E-02 7.169204E-04 # Covariance matrix: 2.1490E-13 -5.8122E-14 1.1259E-15 -5.4623E-16 -1.3636E-13 -9.4237E-14 -5.8122E-14 2.7821E-14 -5.8429E-16 3.2016E-16 4.0209E-14 5.3339E-14 1.1259E-15 -5.8429E-16 1.0536E-13 -7.4130E-15 -9.1348E-16 -1.1753E-15 -5.4623E-16 3.2016E-16 -7.4130E-15 1.3837E-15 1.5939E-16 6.9046E-16 -1.3636E-13 4.0209E-14 -9.1348E-16 1.5939E-16 3.4705E-13 4.2155E-14 -9.4237E-14 5.3339E-14 -1.1753E-15 6.9046E-16 4.2155E-14 1.1291E-13 # lat0 lon0 xBary yBary zBary JD0 -1.009187 -53.078830 -0.279121 -0.017162 -0.977607 2453232.837463 # Heliocentric elements and errors Epoch: 2453232.5000 = 2004/08/15 Mean Anomaly: 110.82383 +/- 0.093 Argument of Peri: 191.91170 +/- 0.083 Long of Asc Node: 359.92549 +/- 0.003 Inclination: 1.24113 +/- 0.000 Eccentricity: 0.04399799 +/- 0.0000 Semi-Major Axis: 42.84786443 +/- 0.0039 Time of Perihelion: 2421695.3197 +/- 26.8 Perihelion: 40.96264469 +/- 0.0040 Aphelion: 44.73308417 +/- 0.0043 Period (y) 280.4800 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 26.40173161 +/- 0.0007 Ecliptic Y -34.67520107 +/- 0.0008 Ecliptic Z -0.75050318 +/- 0.0000 Ecliptic XDOT 0.00211681 +/- 0.0000 Ecliptic YDOT 0.00147967 +/- 0.0000 Ecliptic ZDOT 0.00003212 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 43.58878320 +/- 0.0008 Geocenter to KBO 42.61383344 +/- 0.0011 # Hcoef: 6.75
The following table shows the complete astrometric record for 04PT117. 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 (04PT117) followed by the observatory code and reference code for the source of the astrometry.
2004 08 15.33672 20 38 20.79 -19 31 08.1 23.5g 04PT117 568 C~0VDr 2004 08 15.36789 20 38 20.65 -19 31 08.6 23.5g 04PT117 568 C~0VDr 2004 08 15.39461 20 38 20.53 -19 31 09.1 23.3g 04PT117 568 C~0VDr 2004 08 16.30448 20 38 16.41 -19 31 23.8 04PT117 568 C~0VDr 2005 07 26.46374 20 45 05.71 -19 04 41.0 22.9r 04PT117 568 C~0VDr 2005 07 26.49379 20 45 05.55 -19 04 41.6 23.0r 04PT117 568 C~0VDr 2005 07 26.52333 20 45 05.40 -19 04 42.0 23.1r 04PT117 568 C~0VDr 2005 07 29.34214 20 44 52.12 -19 05 33.3 04PT117 568 C~0VDr 2005 07 29.34421 20 44 52.09 -19 05 33.4 22.9r 04PT117 568 C~0VDr 2006 07 26.25712 20 50 16.54 -18 43 20.7 04PT117 675 C~0VDr 2006 07 26.30436 20 50 16.31 -18 43 21.5 04PT117 675 C~0VDr 2007 06 02.45028 20 58 34.26 -18 08 01.0 04PT117 696 C~0VDr 2007 06 03.44885 20 58 32.44 -18 08 09.7 04PT117 696 C~0VDr 2007 06 03.45299 20 58 32.42 -18 08 09.9 04PT117 696 C~0VDr 2007 09 16.18538 20 51 43.03 -18 35 57.9 04PT117 675 C~0VDr 2007 09 16.22982 20 51 42.89 -18 35 58.4 04PT117 675 C~0VDr 2013 10 05.12455 21 20 48.78 -16 23 02.7 23.1R 04PT117 695 C~0zda 2013 10 05.24528 21 20 48.50 -16 23 03.4 04PT117 695 C~0zda 2013 10 06.13487 21 20 46.47 -16 23 12.1 04PT117 695 C~0zda 2024 10 01.103210 22 13 31.266 -11 37 55.23 23.2G 04PT117 G37 C~8Gif 2024 10 01.146380 22 13 31.096 -11 37 56.13 04PT117 G37 C~8Gif 2024 10 01.188750 22 13 30.953 -11 37 56.85 04PT117 G37 C~8Gif
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 -0.04
2 0.0001 0.00 -0.04 0.00 -0.03
3 0.0002 0.00 0.01 0.00 -0.10
4 0.0026 0.00 0.04 0.00 -0.06
5 0.9449 0.00 0.25 0.00 0.11
6 0.9450 0.00 0.01 0.00 0.06
7 0.9451 0.00 -0.11 0.00 0.19
8 0.9528 0.00 0.15 0.00 -0.09
9 0.9528 0.00 -0.15 0.00 -0.16
10 1.9437 0.00 0.03 0.00 -0.50
11 1.9438 0.00 -0.06 0.00 -0.42
12 2.7957 0.00 -0.13 0.00 0.32
13 2.7984 0.00 0.08 0.00 0.26
14 2.7984 0.00 -0.09 0.00 0.10
15 3.0851 0.00 0.13 0.00 0.05
16 3.0853 0.00 0.22 0.00 0.07
17 9.1384 0.00 -0.03 0.00 0.06
18 9.1387 0.00 0.07 0.00 0.48
19 9.1411 0.00 -0.36 0.00 -0.04
20 20.1280 0.00 0.26 0.00 -0.02
21 20.1282 0.00 -0.08 0.00 -0.14
22 20.1283 0.00 -0.06 0.00 -0.10
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.
04PT117 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.003 43.003 43.003 ecceobj 0.038 0.038 0.038 incobj 1.237 1.237 1.237 qmin 40.441 40.458 40.430 qmax 45.896 45.889 45.891 amean 43.042 43.042 43.042 amin 42.709 42.710 42.711 amax 43.385 43.382 43.395 emean 0.038 0.038 0.037 emin 0.018 0.018 0.018 emax 0.058 0.058 0.058 imean 2.253 2.253 2.253 imin 1.175 1.175 1.175 imax 3.032 3.032 3.031 excite_mean 0.056 0.056 0.056 fracstop 1.000 1.000 1.000 cjmean 3.086 3.086 3.086 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 174.4 174.5 174.3 kozaiamp 180.0 180.0 180.0