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: 02PG150 # Created Tue Dec 31 02:08:20 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 20 observations of 20 # Arc: 16.16y # First observation: 2002/08/11 # Last observation: 2018/10/10 # Chi-squared of fit: 29.22 DOF: 34 RMS: 0.21 # Min/Max residuals: -0.59 0.62 # Exact a, adot, b, bdot, g, gdot: 1.673350E-05 2.965157E-02 1.959035E-06 2.092292E-05 2.716811E-02 1.682958E-04 # Covariance matrix: 4.8839E-13 -6.8708E-14 -3.5874E-17 -7.9270E-18 -2.4018E-14 -7.7112E-14 -6.8708E-14 1.0385E-13 -1.1693E-15 3.1585E-17 2.3702E-13 1.9314E-13 -3.5874E-17 -1.1693E-15 4.5974E-13 -3.1536E-14 -4.6834E-15 -2.0370E-15 -7.9270E-18 3.1585E-17 -3.1536E-14 2.5633E-15 8.9257E-17 5.8710E-17 -2.4018E-14 2.3702E-13 -4.6834E-15 8.9257E-17 8.1832E-13 4.2588E-13 -7.7112E-14 1.9314E-13 -2.0370E-15 5.8710E-17 4.2588E-13 3.7088E-13 # lat0 lon0 xBary yBary zBary JD0 -5.676072 -12.775730 0.491627 -0.088083 -0.886149 2452497.903973 # Heliocentric elements and errors Epoch: 2452498.5000 = 2002/08/12 Mean Anomaly: 356.51367 +/- 0.006 Argument of Peri: 274.19209 +/- 0.008 Long of Asc Node: 76.90563 +/- 0.001 Inclination: 5.54203 +/- 0.000 Eccentricity: 0.13452660 +/- 0.0001 Semi-Major Axis: 43.53840143 +/- 0.0061 Time of Perihelion: 2453514.6861 +/- 21.9 Perihelion: 37.68132847 +/- 0.0067 Aphelion: 49.39547439 +/- 0.0080 Period (y) 287.2876 +/- 0.06 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 36.48021733 +/- 0.0012 Ecliptic Y -8.77014106 +/- 0.0003 Ecliptic Z -3.64040667 +/- 0.0001 Ecliptic XDOT 0.00066969 +/- 0.0000 Ecliptic YDOT 0.00290774 +/- 0.0000 Ecliptic ZDOT 0.00000063 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 37.69581735 +/- 0.0012 Geocenter to KBO 36.80788723 +/- 0.0012 # Hcoef: 7.86
The following table shows the complete astrometric record for 02PG150. 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 (02PG150) followed by the observatory code and reference code for the source of the astrometry.
2002 08 11.40323 23 21 57.91 -10 16 09.3 22.9R 02PG150 807 Cg3358 2002 08 12.30876 23 21 54.21 -10 16 36.8 02PG150 807 Cg3358 2002 08 12.38688 23 21 53.91 -10 16 39.4 02PG150 807 Cg3358 2002 09 10.39573 23 19 38.92 -10 31 57.1 23.2R 02PG150 662 Cg3358 2002 09 10.45384 23 19 38.62 -10 31 58.9 02PG150 662 Cg3358 2013 10 13.17502 00 25 41.261 -03 06 22.88 23.6i 02PG150 W84 C~553O 2013 11 23.10450 00 23 06.835 -03 18 46.77 22.9r 02PG150 W84 C~553O 2014 10 28.19972 00 30 40.827 -02 29 37.83 23.7r 02PG150 W84 C~553O 2016 09 09.27780 00 46 37.421 -00 40 26.36 23.9r 02PG150 W84 C~553O 2016 11 05.19800 00 42 13.223 -01 07 02.60 23.3r 02PG150 W84 C~553O 2016 11 05.19938 00 42 13.206 -01 07 02.60 23.4i 02PG150 W84 C~553O 2016 11 08.15510 00 42 01.632 -01 07 58.40 23.3i 02PG150 W84 C~553O 2017 08 28.35579 00 53 27.362 +00 08 08.58 23.2i 02PG150 W84 C~553O 2017 08 28.35716 00 53 27.346 +00 08 08.24 23.6r 02PG150 W84 C~553O 2017 09 18.25527 00 52 01.368 -00 02 05.22 23.6i 02PG150 W84 C~553O 2017 09 18.25664 00 52 01.371 -00 02 05.33 24.0r 02PG150 W84 C~553O 2017 09 27.22126 00 51 19.131 -00 06 42.79 24.1r 02PG150 W84 C~553O 2018 09 09.34683 00 58 43.247 +00 45 12.26 22.9z 02PG150 W84 C~553O 2018 10 10.26648 00 56 19.373 +00 29 37.48 23.7i 02PG150 W84 C~553O 2018 10 10.26785 00 56 19.372 +00 29 37.50 23.6r 02PG150 W84 C~553O
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 0.26 0.00 -0.33
2 0.0025 0.00 0.21 0.00 -0.07
3 0.0027 0.00 0.62 0.00 -0.28
4 0.0821 0.00 -0.46 0.00 0.35
5 0.0823 0.00 -0.59 0.00 0.34
6 11.1725 0.00 -0.16 0.00 -0.12
7 11.2846 0.00 0.09 0.00 0.13
8 12.2130 0.00 0.09 0.00 -0.03
9 14.0804 0.00 -0.12 0.00 -0.12
10 14.2363 0.00 0.10 0.00 0.05
11 14.2363 0.00 -0.07 0.00 0.07
12 14.2444 0.00 0.12 0.00 0.00
13 15.0471 0.00 0.02 0.00 0.17
14 15.0471 0.00 -0.15 0.00 -0.13
15 15.1043 0.00 -0.08 0.00 0.12
16 15.1043 0.00 0.06 0.00 0.06
17 15.1289 0.00 -0.05 0.00 -0.01
18 16.0792 0.00 0.02 0.00 -0.18
19 16.1639 0.00 0.06 0.00 -0.02
20 16.1639 0.00 0.15 0.00 0.04
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.
02PG150 quality flag:3 Type: 7:4EEE 7:4EEE 7:4EEE axisobj 43.939 43.939 43.939 ecceobj 0.142 0.142 0.142 incobj 5.542 5.542 5.542 qmin 36.839 36.839 36.839 qmax 51.026 51.026 51.026 amean 43.727 43.727 43.727 amin 43.318 43.310 43.318 amax 44.185 44.185 44.185 emean 0.132 0.132 0.132 emin 0.103 0.103 0.102 emax 0.155 0.155 0.155 imean 4.404 4.422 4.396 imin 2.970 2.969 2.970 imax 6.732 6.730 6.735 excite_mean 0.154 0.154 0.154 fracstop 1.000 1.000 1.000 cjmean 3.070 3.070 3.070 libcent 0 176.7 176.7 176.9 libamp 0 89.0 89.3 88.6 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 267.2 267.1 267.2 kozaiamp 45.0 44.9 45.0