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: 02PD155
# Created Thu Nov 21 02:08:22 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 22 observations of 22
# Arc: 19.17y
# First observation: 2001/08/21
# Last observation: 2020/10/20
# Chi-squared of fit: 284.31 DOF: 38 RMS: 0.64
# Min/Max residuals: -1.25 1.63
# Exact a, adot, b, bdot, g, gdot:
1.501372E-05 2.274807E-02 3.072934E-06 2.214757E-03 2.379196E-02 1.711481E-05
# Covariance matrix:
3.3065E-13 -1.1972E-13 1.1658E-14 -1.1632E-14 1.8324E-13 -2.5794E-13
-1.1972E-13 1.4469E-13 -1.3057E-14 1.4451E-14 6.0898E-14 3.1667E-13
1.1658E-14 -1.3057E-14 1.5279E-13 -1.0030E-14 -1.6587E-15 -2.9000E-14
-1.1632E-14 1.4451E-14 -1.0030E-14 2.4659E-15 4.9736E-15 3.1917E-14
1.8324E-13 6.0898E-14 -1.6587E-15 4.9736E-15 5.9423E-13 1.0144E-13
-2.5794E-13 3.1667E-13 -2.9000E-14 3.1917E-14 1.0144E-13 6.9982E-13
# lat0 lon0 xBary yBary zBary JD0
1.539032 -22.622159 0.168001 0.026712 -0.997926 2452142.677053
# Heliocentric elements and errors
Epoch: 2452142.5000 = 2001/08/21
Mean Anomaly: 305.02328 +/- 0.623
Argument of Peri: 70.79937 +/- 0.635
Long of Asc Node: 322.13162 +/- 0.000
Inclination: 5.77872 +/- 0.000
Eccentricity: 0.00761530 +/- 0.0001
Semi-Major Axis: 43.21678504 +/- 0.0055
Time of Perihelion: 2467989.7317 +/- 180.3
Perihelion: 42.88767626 +/- 0.0059
Aphelion: 43.54589382 +/- 0.0060
Period (y) 284.1102 +/- 0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 39.64299128 +/- 0.0013
Ecliptic Y -16.69445150 +/- 0.0005
Ecliptic Z 1.12898535 +/- 0.0000
Ecliptic XDOT 0.00099378 +/- 0.0000
Ecliptic YDOT 0.00241952 +/- 0.0000
Ecliptic ZDOT 0.00025503 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.02959934 +/- 0.0012
Geocenter to KBO 42.03104441 +/- 0.0014
# Hcoef: 7.70
The following table shows the complete astrometric record for 02PD155. 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 (02PD155) followed by the observatory code and reference code for the source of the astrometry.
2001 08 21.17631 22 34 00.06 -07 22 18.8 22.0R 02PD155 807 Ch1602 2001 08 21.25156 22 33 59.72 -07 22 20.5 02PD155 807 Ch1602 2001 09 12.26600 22 32 22.54 -07 31 28.8 22.9R 02PD155 695 Ch1602 2001 09 12.31021 22 32 22.36 -07 31 29.8 02PD155 695 Ch1602 2002 08 12.29280 22 39 19.91 -06 42 37.8 21.7R 02PD155 807 Ch1602 2002 08 12.37104 22 39 19.57 -06 42 39.6 02PD155 807 Ch1602 2002 11 07.10355 22 34 13.40 -07 12 37.0 23.1R 02PD155 695 Ch1602 2002 11 08.10036 22 34 12.29 -07 12 45.4 02PD155 695 Ch1602 2002 11 08.12870 22 34 12.26 -07 12 44.7 02PD155 695 Ch1602 2004 09 18.34812 22 45 55.67 -05 45 40.4 23.3R 02PD155 568 Cl5725 2004 09 18.41217 22 45 55.38 -05 45 42.0 02PD155 568 Cl5725 2007 06 13.69406 23 04 38.72 -03 30 59.6 23.8R 02PD155 250 S~06AX 2007 06 13.70101 23 04 38.72 -03 30 59.6 02PD155 250 S~06AX 2007 06 13.70864 23 04 38.72 -03 30 59.5 02PD155 250 S~06AX 2007 06 13.71559 23 04 38.72 -03 30 59.5 02PD155 250 S~06AX 2019 09 27.27779 23 54 48.40 +03 25 19.0 26.3g 02PD155 T09 C~7zkO 2019 09 27.38315 23 54 47.91 +03 25 16.0 26.0g 02PD155 T09 C~7zkO 2019 09 27.47843 23 54 47.50 +03 25 13.3 25.3g 02PD155 T09 C~7zkO 2019 09 27.55888 23 54 47.13 +03 25 10.9 25.5g 02PD155 T09 C~7zkO 2020 10 20.103130 23 57 49.142 +03 51 26.08 23.6G 02PD155 G37 C~4Knz 2020 10 20.151630 23 57 48.952 +03 51 24.65 02PD155 G37 C~4Knz 2020 10 20.212650 23 57 48.713 +03 51 22.92 02PD155 G37 C~4Knz
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 0.14 0.00 -0.30
2 0.0002 0.00 0.09 0.00 -0.17
3 0.0605 0.00 0.52 0.00 -0.31
4 0.0606 0.00 0.73 0.00 -0.22
5 0.9750 0.00 0.11 0.00 -0.30
6 0.9752 0.00 -0.03 0.00 -0.32
7 1.2127 0.00 0.23 0.00 -0.62
8 1.2154 0.00 0.39 0.00 -1.25
9 1.2155 0.00 0.43 0.00 -0.34
10 3.0778 0.00 -0.43 0.00 -0.57
11 3.0780 0.00 -0.64 0.00 -0.55
12 5.8111 0.00 -0.57 0.00 1.61
13 5.8112 0.00 -0.59 0.00 1.57
14 5.8112 0.00 -0.60 0.00 1.63
15 5.8112 0.00 -0.62 0.00 1.59
16 18.1002 0.00 0.21 0.00 -0.10
17 18.1005 0.00 -0.12 0.00 -0.17
18 18.1008 0.00 0.10 0.00 -0.22
19 18.1010 0.00 -0.09 0.00 -0.38
20 19.1648 0.00 0.27 0.00 -0.14
21 19.1649 0.00 0.23 0.00 -0.30
22 19.1651 0.00 0.19 0.00 -0.42
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.
02PD155 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.445 43.445 43.445 ecceobj 0.011 0.011 0.011 incobj 5.762 5.762 5.762 qmin 42.068 42.068 42.068 qmax 44.638 44.638 44.639 amean 43.283 43.283 43.283 amin 42.955 42.956 42.954 amax 43.614 43.615 43.614 emean 0.010 0.010 0.010 emin 0.000 0.000 0.000 emax 0.024 0.024 0.024 imean 6.918 6.918 6.918 imin 6.204 6.204 6.204 imax 7.578 7.578 7.578 excite_mean 0.121 0.121 0.121 fracstop 1.000 1.000 1.000 cjmean 3.075 3.075 3.075 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 177.8 178.0 177.8 kozaiamp 179.9 180.0 180.0