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: 02PR149 # Created Wed Dec 25 02:08:18 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 23 observations of 23 # Arc: 17.22y # First observation: 2002/08/11 # Last observation: 2019/11/01 # Chi-squared of fit: 13.17 DOF: 40 RMS: 0.13 # Min/Max residuals: -0.38 0.29 # Exact a, adot, b, bdot, g, gdot: 1.479454E-05 2.331692E-02 -1.811247E-06 -8.941886E-04 2.375927E-02 -1.522835E-03 # Covariance matrix: 4.8757E-13 -6.6877E-14 -2.2141E-15 1.4714E-15 -2.5939E-14 -9.2276E-14 -6.6877E-14 3.6730E-14 1.7691E-15 -1.2266E-15 7.3253E-14 7.6283E-14 -2.2141E-15 1.7691E-15 4.3396E-13 -2.9464E-14 2.5601E-15 4.1254E-15 1.4714E-15 -1.2266E-15 -2.9464E-14 2.3318E-15 -2.0403E-15 -2.8146E-15 -2.5939E-14 7.3253E-14 2.5601E-15 -2.0403E-15 3.7939E-13 1.2368E-13 -9.2276E-14 7.6283E-14 4.1254E-15 -2.8146E-15 1.2368E-13 1.7559E-13 # lat0 lon0 xBary yBary zBary JD0 -0.693962 -10.304518 0.530025 -0.010526 -0.868163 2452497.872963 # Heliocentric elements and errors Epoch: 2452498.5000 = 2002/08/12 Mean Anomaly: 307.29637 +/- 0.029 Argument of Peri: 259.13076 +/- 0.035 Long of Asc Node: 151.87292 +/- 0.002 Inclination: 2.30855 +/- 0.000 Eccentricity: 0.09500459 +/- 0.0000 Semi-Major Axis: 45.28411186 +/- 0.0046 Time of Perihelion: 2468793.5315 +/- 17.0 Perihelion: 40.98191338 +/- 0.0047 Aphelion: 49.58631035 +/- 0.0055 Period (y) 304.7383 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 42.16618141 +/- 0.0011 Ecliptic Y -8.19920826 +/- 0.0002 Ecliptic Z -0.50986431 +/- 0.0000 Ecliptic XDOT 0.00029901 +/- 0.0000 Ecliptic YDOT 0.00267252 +/- 0.0000 Ecliptic ZDOT -0.00010070 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.95903068 +/- 0.0011 Geocenter to KBO 42.08891429 +/- 0.0011 # Hcoef: 7.28
The following table shows the complete astrometric record for 02PR149. 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 (02PR149) followed by the observatory code and reference code for the source of the astrometry.
2002 08 11.37222 23 23 12.70 -04 43 06.8 21.9R 02PR149 807 Cg3358 2002 08 12.31262 23 23 09.32 -04 43 29.6 02PR149 807 Cg3358 2002 08 12.39073 23 23 09.03 -04 43 31.6 02PR149 807 Cg3358 2013 10 13.11063 00 14 51.318 +00 14 38.43 22.5i 02PR149 W84 C~52Rf 2013 11 22.08692 00 12 39.379 +00 00 50.18 22.8i 02PR149 W84 C~52Rf 2014 08 18.31064 00 23 49.638 +01 10 30.61 23.5i 02PR149 W84 C~52Rf 2014 10 29.14146 00 18 58.567 +00 38 21.47 23.1z 02PR149 W84 C~52Rf 2014 11 13.10105 00 18 09.554 +00 33 16.19 23.0z 02PR149 W84 C~52Rf 2015 11 07.07593 00 23 38.090 +01 05 33.01 23.5r 02PR149 W84 C~52Rf 2016 09 09.32608 00 32 50.706 +02 02 02.69 22.2r 02PR149 W84 C~52Rf 2016 10 02.18440 00 31 12.103 +01 51 09.70 23.0i 02PR149 W84 C~52Rf 2016 11 18.11310 00 28 12.870 +01 32 18.27 23.6r 02PR149 W84 C~52Rf 2016 11 30.10104 00 27 46.507 +01 29 45.27 23.8r 02PR149 W84 C~52Rg 2016 11 30.10240 00 27 46.511 +01 29 45.18 23.4i 02PR149 W84 C~52Rg 2017 09 27.19789 00 36 48.814 +02 24 15.38 22.8i 02PR149 W84 C~52Rg 2017 09 27.19925 00 36 48.807 +02 24 15.26 23.4r 02PR149 W84 C~52Rg 2017 10 29.13345 00 34 31.523 +02 09 35.33 22.6z 02PR149 W84 C~52Rg 2018 09 09.24289 00 43 20.443 +03 03 19.76 23.6z 02PR149 W84 C~52Rg 2018 10 10.25408 00 41 06.531 +02 48 41.53 22.9r 02PR149 W84 C~52Rg 2018 10 10.25546 00 41 06.521 +02 48 41.38 22.8i 02PR149 W84 C~52Rg 2019 11 01.31914 00 44 49.75 +03 09 35.2 26.3g 02PR149 T09 C~8GhX 2019 11 01.40916 00 44 49.39 +03 09 32.9 25.2g 02PR149 T09 C~8GhX 2019 11 01.50543 00 44 49.02 +03 09 30.7 25.8g 02PR149 T09 C~8GhX
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 0.04 0.00 0.29
2 0.0026 0.00 -0.06 0.00 0.08
3 0.0028 0.00 -0.10 0.00 -0.03
4 11.1725 0.00 0.05 0.00 -0.05
5 11.2819 0.00 0.12 0.00 -0.19
6 12.0190 0.00 0.26 0.00 -0.38
7 12.2157 0.00 -0.08 0.00 0.02
8 12.2566 0.00 0.05 0.00 -0.20
9 13.2394 0.00 0.08 0.00 -0.17
10 14.0806 0.00 -0.11 0.00 -0.11
11 14.1432 0.00 0.03 0.00 0.04
12 14.2717 0.00 0.16 0.00 -0.13
13 14.3045 0.00 -0.10 0.00 -0.01
14 14.3045 0.00 -0.00 0.00 -0.09
15 15.1289 0.00 -0.01 0.00 0.08
16 15.1289 0.00 -0.02 0.00 0.00
17 15.2163 0.00 0.11 0.00 0.02
18 16.0790 0.00 -0.09 0.00 0.15
19 16.1639 0.00 0.01 0.00 0.08
20 16.1640 0.00 -0.04 0.00 -0.03
21 17.2237 0.00 -0.13 0.00 0.26
22 17.2239 0.00 -0.13 0.00 0.14
23 17.2242 0.00 0.07 0.00 0.27
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.
02PR149 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 45.672 45.672 45.672 ecceobj 0.099 0.099 0.099 incobj 2.303 2.303 2.303 qmin 40.146 40.147 40.151 qmax 50.946 50.928 50.952 amean 45.406 45.405 45.406 amin 45.037 45.050 45.033 amax 45.797 45.790 45.807 emean 0.099 0.099 0.099 emin 0.085 0.085 0.085 emax 0.113 0.112 0.113 imean 2.139 2.139 2.139 imin 1.599 1.599 1.599 imax 2.623 2.623 2.623 excite_mean 0.106 0.106 0.106 fracstop 1.000 1.000 1.000 cjmean 3.105 3.105 3.105 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 183.6 183.5 183.5 kozaiamp 180.0 179.9 179.9