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: 02PX170 # Created Thu Apr 25 01:10:50 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 30 observations of 31 # Arc: 17.14y # First observation: 2002/08/05 # Last observation: 2019/09/27 # Chi-squared of fit: 42.83 DOF: 54 RMS: 0.21 # Min/Max residuals: -0.57 0.68 # Exact a, adot, b, bdot, g, gdot: 1.574942E-05 2.291496E-02 -1.603160E-06 -5.475855E-04 2.391672E-02 1.114618E-03 # Covariance matrix: 9.2521E-14 -3.0216E-14 -5.0652E-16 6.7526E-16 3.8072E-14 -7.4211E-14 -3.0216E-14 5.0504E-14 7.5415E-16 -1.1994E-15 3.6269E-14 1.2859E-13 -5.0652E-16 7.5415E-16 6.7038E-14 -5.0506E-15 2.0996E-17 2.0561E-15 6.7526E-16 -1.1994E-15 -5.0506E-15 1.5350E-15 -6.2227E-16 -3.1857E-15 3.8072E-14 3.6269E-14 2.0996E-17 -6.2227E-16 2.8311E-13 5.8504E-14 -7.4211E-14 1.2859E-13 2.0561E-15 -3.1857E-15 5.8504E-14 3.4272E-13 # lat0 lon0 xBary yBary zBary JD0 -0.778034 -31.580384 0.277132 -0.013371 -0.979961 2452491.948573 # Heliocentric elements and errors Epoch: 2452492.5000 = 2002/08/06 Mean Anomaly: 97.55246 +/- 0.098 Argument of Peri: 106.79060 +/- 0.088 Long of Asc Node: 119.11065 +/- 0.002 Inclination: 1.57070 +/- 0.000 Eccentricity: 0.04092160 +/- 0.0000 Semi-Major Axis: 42.49183714 +/- 0.0035 Time of Perihelion: 2425077.2360 +/- 27.8 Perihelion: 40.75300333 +/- 0.0036 Aphelion: 44.23067095 +/- 0.0038 Period (y) 276.9915 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 36.30628818 +/- 0.0008 Ecliptic Y -22.63806462 +/- 0.0005 Ecliptic Z -0.56779513 +/- 0.0000 Ecliptic XDOT 0.00147393 +/- 0.0000 Ecliptic YDOT 0.00216575 +/- 0.0000 Ecliptic ZDOT -0.00006420 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.78958688 +/- 0.0007 Geocenter to KBO 41.81175621 +/- 0.0009 # Hcoef: 7.28
The following table shows the complete astrometric record for 02PX170. 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 (02PX170) followed by the observatory code and reference code for the source of the astrometry.
2002 08 05.44783 22 03 24.75 -12 45 11.7 22.9R 02PX170 568 Cp2009 2002 08 05.51173 22 03 24.47 -12 45 13.2 23.1R 02PX170 568 Cp2009 2002 08 05.57377 22 03 24.20 -12 45 14.5 23.1R 02PX170 568 Cp2009 2002 08 09.43404 22 03 07.29 -12 46 49.4 02PX170 568 Cp2009 2002 09 04.04466 22 01 11.95 -12 57 19.6 02PX170 950 Cp2009 2002 09 04.09186 22 01 11.72 -12 57 20.5 02PX170 950 Cp2009 2002 09 04.12284 22 01 11.60 -12 57 21.6 23.3R 02PX170 950 Cp2009 2002 09 30.26756 21 59 28.59 -13 06 28.1 02PX170 568 Cp2010 2002 09 30.32329 21 59 28.40 -13 06 29.1 23.3R 02PX170 568 Cp2010 2002 09 30.38512 21 59 28.20 -13 06 30.4 23.1R 02PX170 568 Cp2010 2003 06 24.52643 22 10 47.54 -12 05 59.1 24.2i 02PX170 568 Cp2010 2003 06 25.50024 22 10 45.59 -12 06 11.6 23.6i 02PX170 568 Cp2010 2003 06 25.55086 22 10 45.50 -12 06 12.1 23.6i 02PX170 568 Cp2010 2003 06 25.59926 22 10 45.39 -12 06 12.6 23.5i 02PX170 568 Cp2010 2003 07 29.15322 22 09 00.20 -12 16 31.6 02PX170 809 Cp2010 2003 07 29.24417 22 08 59.81 -12 16 33.8 02PX170 809 Cp2010 2003 07 29.32729 22 08 59.49 -12 16 35.5 02PX170 809 Cp2010 2003 08 31.33777 22 06 34.17 -12 30 09.6 23.6g 02PX170 568 Cq9889 2003 08 31.33942 22 06 34.19 -12 30 09.7 23.6g 02PX170 568 Cq9889 2003 08 31.37215 22 06 34.02 -12 30 10.9 23.8g 02PX170 568 Cq9889 2003 08 31.37380 22 06 34.03 -12 30 11.3 23.6g 02PX170 568 Cq9889 2003 08 31.39849 22 06 33.92 -12 30 11.6 23.9g 02PX170 568 Cq9889 2003 08 31.40015 22 06 33.91 -12 30 11.4 24.0g 02PX170 568 Cq9889 2003 09 04.44932 22 06 17.10 -12 31 56.6 23.8g 02PX170 568 Cq9889 2004 09 07.21489 22 11 03.60 -12 07 24.5 23.3R 02PX170 695 Cp2010 2004 09 07.31565 22 11 03.12 -12 07 26.7 23.2R 02PX170 695 Cp2010 2014 10 22.14157 22 57 34.04 -07 51 48.7 23.4R 02PX170 G37 C~1BxC 2014 10 22.24868 22 57 33.73 -07 51 50.5 02PX170 G37 C~1BxC 2019 09 27.03131 23 22 55.04 -05 20 42.6 24.4V 02PX170 W84 C~3GGU 2019 09 27.09661 23 22 54.77 -05 20 44.4 02PX170 W84 C~3GGU 2019 09 27.12924 23 22 54.64 -05 20 45.2 02PX170 W84 C~3GGU
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 -0.21 0.00 0.20
2 0.0002 0.00 -0.17 0.00 0.24
3 0.0003 0.00 -0.11 0.00 0.43
4 0.0109 0.00 0.02 0.00 -0.42
5 0.0810 0.00 0.18 0.00 -0.19
6 0.0812 0.00 -0.10 0.00 0.02
7 0.0812 0.00 0.18 0.00 -0.35
8 0.1528 0.00 -0.05 0.00 0.13
9 0.1530 0.00 -0.07 0.00 0.10
10 0.1531 0.00 0.07 0.00 -0.14
11 0.8845 0.00 0.01 0.00 0.33
12 0.8872 0.00 -0.23 0.00 -0.13
13 0.8873 0.00 0.02 0.00 0.02
14 0.8875 0.00 -0.10 0.00 0.13
15 0.9793 0.00 0.17 0.00 -0.03
16 0.9796 0.00 -0.08 0.00 -0.12
17 0.9798 0.00 0.25 0.00 0.09
18 1.0702 0.00 -0.31 0.00 0.24
19 1.0702 0.00 0.10 0.00 0.18
20 1.0703 0.00 -0.21 0.00 -0.21
21 1.0703 0.00 0.05 0.00 -0.57
22 1.0704 0.00 0.09 0.00 -0.26
23 1.0704 0.00 0.06 0.00 -0.02
24 1.0815 0.00 ( 18.17) 0.00 ( -6.35)
25 2.0911 0.00 0.68 0.00 0.04
26 2.0914 0.00 0.17 0.00 0.27
27 12.2127 0.00 -0.21 0.00 0.18
28 12.2130 0.00 -0.23 0.00 0.12
29 17.1433 0.00 -0.04 0.00 -0.05
30 17.1435 0.00 0.07 0.00 -0.12
31 17.1435 0.00 0.21 0.00 -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.
02PX170 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 42.801 42.801 42.801 ecceobj 0.039 0.039 0.039 incobj 1.569 1.569 1.569 qmin 40.377 40.387 40.370 qmax 45.239 45.183 45.223 amean 42.705 42.705 42.705 amin 42.372 42.379 42.374 amax 43.038 43.038 43.037 emean 0.031 0.031 0.031 emin 0.009 0.009 0.009 emax 0.051 0.051 0.051 imean 1.645 1.645 1.645 imin 0.313 0.313 0.313 imax 2.455 2.454 2.455 excite_mean 0.045 0.045 0.045 fracstop 1.000 1.000 1.000 cjmean 3.084 3.084 3.084 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 174.3 174.4 174.7 kozaiamp 180.0 180.0 180.0