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: 02PQ152
# Created Sun Dec 22 02:08:24 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 33 observations of 33
# Arc: 16.11y
# First observation: 2001/09/19
# Last observation: 2017/10/28
# Chi-squared of fit: 91.91 DOF: 60 RMS: 0.30
# Min/Max residuals: -0.53 1.17
# Exact a, adot, b, bdot, g, gdot:
2.404613E-05 7.338327E-02 5.913068E-06 1.195278E-02 4.979024E-02 1.462192E-03
# Covariance matrix:
1.2479E-13 -2.1152E-14 4.4699E-15 -2.1773E-15 -1.5965E-14 -8.0183E-15
-2.1152E-14 7.2096E-15 -2.1587E-15 1.0476E-15 4.6213E-15 3.9422E-15
4.4699E-15 -2.1587E-15 9.6707E-14 -8.0325E-15 -3.4816E-16 -1.3878E-15
-2.1773E-15 1.0476E-15 -8.0325E-15 9.8947E-16 2.8735E-16 6.6796E-16
-1.5965E-14 4.6213E-15 -3.4816E-16 2.8735E-16 9.6929E-14 -1.5431E-15
-8.0183E-15 3.9422E-15 -1.3878E-15 6.6796E-16 -1.5431E-15 2.6366E-15
# lat0 lon0 xBary yBary zBary JD0
1.573070 -27.047192 -0.393223 0.025189 -0.921822 2452171.766509
# Heliocentric elements and errors
Epoch: 2452172.5000 = 2001/09/20
Mean Anomaly: 8.84534 +/- 0.586
Argument of Peri: 356.13208 +/- 0.000
Long of Asc Node: 324.87891 +/- 0.000
Inclination: 9.36201 +/- 0.000
Eccentricity: 0.18876427 +/- 0.0011
Semi-Major Axis: 25.79028873 +/- 0.0001
Time of Perihelion: 2450997.0753 +/- 77.8
Perihelion: 20.92200376 +/- 0.0276
Aphelion: 30.65857370 +/- 0.0276
Period (y) 130.9762 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 18.88371826 +/- 0.0010
Ecliptic Y -9.19248131 +/- 0.0005
Ecliptic Z 0.55148987 +/- 0.0000
Ecliptic XDOT 0.00188173 +/- 0.0000
Ecliptic YDOT 0.00356648 +/- 0.0000
Ecliptic ZDOT 0.00065943 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 21.00952049 +/- 0.0009
Geocenter to KBO 20.08428586 +/- 0.0011
# Hcoef: 9.15
The following table shows the complete astrometric record for 02PQ152. 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 (02PQ152) followed by the observatory code and reference code for the source of the astrometry.
2001 09 19.265766 22 17 18.36 -08 57 10.8 21.6V 02PQ152 645 C~1SKs 2001 09 19.266595 22 17 18.36 -08 57 10.8 21.2V 02PQ152 645 C~1SKs 2001 09 19.269083 22 17 18.34 -08 57 10.9 21.9V 02PQ152 645 C~1SKs 2002 08 12.29280 22 37 21.34 -06 20 41.4 20.8R 02PQ152 807 Cg3360 2002 08 12.37104 22 37 20.71 -06 20 44.3 02PQ152 807 Cg3360 2002 09 10.25730 22 33 19.16 -06 41 03.2 21.3R 02PQ152 662 Cg3360 2002 09 10.38032 22 33 18.13 -06 41 08.6 02PQ152 662 Cg3360 2002 09 11.19041 22 33 11.43 -06 41 44.4 21.6R 02PQ152 662 Cg3360 2002 09 11.27818 22 33 10.67 -06 41 48.3 02PQ152 662 Cg3360 2002 10 04.18856 22 30 18.74 -06 57 09.1 22.0R 02PQ152 688 Cg3360 2002 10 04.29491 22 30 18.00 -06 57 13.2 02PQ152 688 Cg3360 2002 11 04.07719 22 28 05.00 -07 09 32.8 21.5R 02PQ152 688 Cg5879 2002 11 04.17847 22 28 04.81 -07 09 33.7 02PQ152 688 Cg5879 2004 07 16.34292 23 08 39.66 -01 49 27.6 21.5R 02PQ152 807 C~077I 2004 07 16.39442 23 08 39.44 -01 49 28.2 02PQ152 807 C~077I 2007 10 11.27426 23 40 05.18 +03 40 44.9 22.1R 02PQ152 688 C~077I 2007 10 11.33360 23 40 04.69 +03 40 41.9 02PQ152 688 C~077I 2009 10 12.27845 00 07 11.69 +07 44 41.4 22.8R 02PQ152 688 C~09x7 2009 10 12.32486 00 07 11.32 +07 44 39.1 02PQ152 688 C~09x7 2012 10 09.34925 00 47 56.487 +13 28 39.90 23.4G 02PQ152 F51 C~2r7A 2012 10 09.36336 00 47 56.348 +13 28 39.33 22.9G 02PQ152 F51 C~2r7A 2012 10 09.37758 00 47 56.244 +13 28 38.30 23.1G 02PQ152 F51 C~2r7A 2012 10 09.39187 00 47 56.097 +13 28 37.70 22.6G 02PQ152 F51 C~2r7A 2014 10 01.56244 01 15 42.127 +16 59 45.80 23.4G 02PQ152 F51 C~2r7A 2014 10 25.47837 01 12 26.025 +16 42 08.39 23.1G 02PQ152 F51 C~2r7A 2014 10 26.26125 01 12 19.76 +16 41 30.3 23.0R 02PQ152 G37 C~1eMs 2014 10 26.32635 01 12 19.23 +16 41 27.0 02PQ152 G37 C~1eMs 2014 10 26.36841 01 12 18.89 +16 41 24.9 02PQ152 G37 C~1eMs 2014 10 29.24224 01 11 56.13 +16 39 03.5 02PQ152 G37 C~1eMs 2014 10 29.24635 01 11 56.10 +16 39 03.4 02PQ152 G37 C~1eMs 2015 07 25.57561 01 33 42.268 +18 37 38.98 23.2G 02PQ152 F51 C~2r7A 2016 10 25.49274 01 38 47.401 +19 48 05.88 23.0G 02PQ152 F51 C~2r7A 2017 10 28.33369 01 51 35.979 +21 11 27.12 22.8G 02PQ152 F51 C~2r7A
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 0.01 0.00 -0.46
2 0.0000 0.00 0.11 0.00 -0.43
3 0.0000 0.00 0.10 0.00 -0.44
4 0.8954 0.00 -0.25 0.00 -0.24
5 0.8956 0.00 -0.22 0.00 -0.17
6 0.9747 0.00 -0.24 0.00 0.76
7 0.9750 0.00 -0.08 0.00 0.72
8 0.9772 0.00 -0.20 0.00 0.15
9 0.9774 0.00 -0.53 0.00 0.07
10 1.0402 0.00 1.17 0.00 0.20
11 1.0405 0.00 0.62 0.00 -0.15
12 1.1247 0.00 -0.25 0.00 -0.19
13 1.1250 0.00 -0.05 0.00 0.00
14 2.8229 0.00 0.12 0.00 -0.05
15 2.8231 0.00 0.15 0.00 -0.09
16 6.0589 0.00 0.25 0.00 0.27
17 6.0590 0.00 -0.41 0.00 0.14
18 8.0630 0.00 -0.31 0.00 0.23
19 8.0631 0.00 -0.39 0.00 0.26
20 11.0557 0.00 0.19 0.00 0.06
21 11.0557 0.00 -0.12 0.00 0.15
22 11.0557 0.00 0.10 0.00 -0.20
23 11.0558 0.00 -0.31 0.00 -0.13
24 13.0330 0.00 0.11 0.00 0.11
25 13.0985 0.00 0.15 0.00 -0.27
26 13.1006 0.00 0.10 0.00 -0.04
27 13.1008 0.00 0.10 0.00 -0.14
28 13.1009 0.00 0.12 0.00 -0.17
29 13.1088 0.00 0.07 0.00 -0.22
30 13.1088 0.00 0.11 0.00 -0.12
31 13.8462 0.00 0.14 0.00 0.00
32 15.0999 0.00 0.05 0.00 0.09
33 16.1070 0.00 -0.29 0.00 0.19
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.
02PQ152 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 25.930 25.930 25.930 ecceobj 0.193 0.193 0.193 incobj 9.344 9.344 9.344 qmin 20.730 20.923 20.923 qmax 31.337 30.938 30.937 amean 25.970 26.126 26.003 amin 25.456 25.657 25.655 amax 26.555 27.017 26.408 emean 0.169 0.159 0.167 emin 0.130 0.122 0.133 emax 0.193 0.193 0.193 imean 10.386 10.702 10.705 imin 9.412 10.644 10.644 imax 10.761 10.760 10.762 excite_mean 0.248 0.245 0.250 fracstop 0.003 0.002 0.002 cjmean 2.958 2.957 2.956 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 55.4 63.0 74.2 kozaiamp 179.1 179.1 179.1