Orbit Fit and Astrometric record for 09DJ143

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: 09DJ143   
# Created Sat Oct 21 01:37:46 2017
# Orbit generated from Bernstein formalism
# Fitting   43 observations of   44
# Arc:  11.91y
# First observation: 2003/03/23
#  Last observation: 2015/02/18
Preliminary a, adot, b, bdot, g, gdot:
  -0.008728   0.028949  -0.002626   0.007722   0.031030   0.000000
# Chi-squared of fit:     6.89 DOF:   80 RMS:  0.07
# Min/Max residuals:    -0.15    0.21
# Exact a, adot, b, bdot, g, gdot:
  1.703330E-05  2.589894E-02  4.191385E-06  6.860144E-03  2.441793E-02 -6.990664E-03
# Covariance matrix:
  4.7223E-13 -1.1043E-13  5.5234E-14 -1.9436E-14 -3.7305E-14 -2.0009E-13
 -1.1043E-13  3.4546E-14 -2.0275E-14  7.7152E-15  3.0677E-14  7.9391E-14
  5.5234E-14 -2.0275E-14  2.7057E-13 -4.0994E-14 -1.6401E-14 -5.5051E-14
 -1.9436E-14  7.7152E-15 -4.0994E-14  7.7235E-15  9.1799E-15  2.1324E-14
 -3.7305E-14  3.0677E-14 -1.6401E-14  9.1799E-15  1.1075E-13  9.4288E-14
 -2.0009E-13  7.9391E-14 -5.5051E-14  2.1324E-14  9.4288E-14  2.1941E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   10.045897  174.768659   -0.131336    0.172020   -0.971030  2452721.690718
# Heliocentric elements and errors
Epoch:              2452720.5000  =  2003/03/22
Mean Anomaly:          341.15562 +/-     0.003
Argument of Peri:       83.50712 +/-     0.003
Long of Asc Node:      141.93118 +/-     0.000
Inclination:            17.60767 +/-     0.000
Eccentricity:         0.43494305 +/-    0.0000
Semi-Major Axis:     66.39816115 +/-    0.0066
Time of Perihelion: 2463065.0576 +/-       0.6
Perihelion:          37.51874210 +/-    0.0049
Aphelion:            95.27758021 +/-    0.0099
Period (y)              541.0561 +/-      0.08
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -41.15361549 +/-    0.0005
Ecliptic Y            3.63963841 +/-    0.0001
Ecliptic Z            7.14398897 +/-    0.0001
Ecliptic XDOT         0.00063101 +/-    0.0000
Ecliptic YDOT        -0.00297913 +/-    0.0000
Ecliptic ZDOT         0.00062086 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.92736116 +/-    0.0005
Geocenter to KBO     40.95350876 +/-    0.0006
# Hcoef:  6.99

The following table shows the complete astrometric record for 09DJ143. 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 (09DJ143) followed by the observatory code and reference code for the source of the astrometry.

2003 03  23.189975 11 56 57.93   +11 17 19.8   22.3V 09DJ143   645  C~1qmJ      
2003 03  23.190804 11 56 57.93   +11 17 19.8   21.9V 09DJ143   645  C~1qmJ      
2003 03  23.193292 11 56 57.92   +11 17 19.8   23.2V 09DJ143   645  C~1qmJ      
2009 02  18.588989 12 37 34.809  +09 18 47.73  22.3i 09DJ143   568  C~0aRQ      
2009 02  18.626949 12 37 34.686  +09 18 49.07  22.4i 09DJ143   568  C~0aRQ      
2009 02  19.484889 12 37 31.951  +09 19 20.78  22.2i 09DJ143   568  C~0aRQ      
2009 02  19.544979 12 37 31.748  +09 19 23.01  22.4i 09DJ143   568  C~0aRQ      
2009 02  22.531900 12 37 21.814  +09 21 13.87  23.3g 09DJ143   568  C~0aRQ      
2009 02  22.590872 12 37 21.601  +09 21 16.07  24.0g 09DJ143   568  C~0aRQ      
2009 02  23.442859 12 37 18.677  +09 21 47.77  22.5i 09DJ143   568  C~0aRQ      
2009 02  23.482029 12 37 18.536  +09 21 49.30  23.3g 09DJ143   568  C~0aRQ      
2009 02  23.538190 12 37 18.336  +09 21 51.45  23.2g 09DJ143   568  C~0aRQ      
2009 02  23.593790 12 37 18.138  +09 21 53.52  23.2g 09DJ143   568  C~0aRQ      
2009 04  29.370410 12 32 45.019  +09 55 03.61        09DJ143   568  C~0aRQ      
2009 04  29.472138 12 32 44.610  +09 55 05.26        09DJ143   568  C~0aRQ      
2009 05  01.264453 12 32 37.992  +09 55 34.13        09DJ143   568  C~0aRQ      
2009 05  16.415333 12 31 49.202  +09 58 15.79        09DJ143   568  C~0aRQ      
2009 05  16.458269 12 31 49.072  +09 58 16.01        09DJ143   568  C~0aRQ      
2009 05  17.421563 12 31 46.494  +09 58 21.19        09DJ143   568  C~0aRQ      
2009 05  27.290480 12 31 23.811  +09 58 38.84        09DJ143   568  C~0aRQ      
2009 05  27.387665 12 31 23.626  +09 58 38.62        09DJ143   568  C~0aRQ      
2009 05  28.296365 12 31 21.922  +09 58 36.98        09DJ143   568  C~0aRQ      
2009 05  28.343861 12 31 21.830  +09 58 36.89        09DJ143   568  C~0aRQ      
2009 05  29.247447 12 31 20.218  +09 58 34.54        09DJ143   568  C~0aRQ      
2009 05  29.310682 12 31 20.106  +09 58 34.33        09DJ143   568  C~0aRQ      
2009 05  29.324996 12 31 20.084  +09 58 34.37        09DJ143   568  C~0aRQ      
2009 05  29.379361 12 31 19.983  +09 58 34.18        09DJ143   568  C~0aRQ      
2009 06  16.280983 12 31 02.224  +09 55 57.29        09DJ143   568  C~0aRQ      
2009 06  16.323333 12 31 02.218  +09 55 56.59        09DJ143   568  C~0aRQ      
2009 06  17.256804 12 31 02.064  +09 55 42.76        09DJ143   568  C~0aRQ      
2009 06  18.251779 12 31 01.984  +09 55 27.39        09DJ143   568  C~0aRQ      
2009 06  18.259682 12 31 01.987  +09 55 27.43        09DJ143   568  C~0aRQ      
2009 06  19.251645 12 31 01.982  +09 55 11.46        09DJ143   568  C~0aRQ      
2009 06  22.252552 12 31 02.557  +09 54 19.87        09DJ143   568  C~0aRQ      
2009 06  22.285486 12 31 02.565  +09 54 19.26        09DJ143   568  C~0aRQ      
2009 06  24.273377 12 31 03.397  +09 53 42.13        09DJ143   568  C~0aRQ      
2009 06  24.285257 12 31 03.402  +09 53 41.91        09DJ143   568  C~0aRQ      
2009 06  24.312125 12 31 03.420  +09 53 41.28        09DJ143   568  C~0aRQ      
2009 06  24.356337 12 31 03.440  +09 53 40.43        09DJ143   568  C~0aRQ      
2013 03  12.30049  13 03 10.66   +08 12 42.5   21.9R 09DJ143   G37  C~1T0w      
2013 03  12.43494  13 03 10.08   +08 12 47.5         09DJ143   G37  C~1T0w      
2015 02  18.34159  13 18 14.48   +07 14 33.2   22.1R 09DJ143   695  C~1T0w      
2015 02  18.43507  13 18 14.25   +07 14 36.5         09DJ143   695  C~1T0w      
2015 02  18.52410  13 18 14.04   +07 14 40.0         09DJ143   695  C~1T0w      

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    -0.05       0.00     0.05
  2   0.0000      0.00     0.01       0.00     0.05
  3   0.0000     -0.13     0.05      -0.06    -0.01
  4   5.9121  36012.57    -0.04    8697.45     0.02
  5   5.9122  36010.28    -0.00    8697.87    -0.03
  6   5.9146  35958.53    -0.02    8708.94     0.02
  7   5.9147  35954.74    -0.07    8709.64     0.00
  8   5.9229  35768.73     0.06    8745.90     0.03
  9   5.9231  35764.82    -0.03    8746.52    -0.00
 10   5.9254  35710.50     0.04    8756.34    -0.05
 11   5.9255  35707.88    -0.01    8756.81    -0.01
 12   5.9257  35704.17    -0.03    8757.47     0.04
 13   5.9258  35700.53    -0.02    8758.06     0.04
 14   6.1032  31076.26     0.15    8796.24     0.02
 15   6.1034  31069.94    -0.10    8795.10    -0.13
 16   6.1083  30966.83    -0.01    8778.58     0.02
 17   6.1498  30229.47     0.03    8610.41    -0.04
 18   6.1499  30227.59    -0.10    8609.77    -0.12
 19   6.1526  30190.12     0.17    8597.83    -0.03
 20   6.1796  29872.67    -0.00    8467.40    -0.00
 21   6.1799  29870.24     0.14    8466.01     0.00
 22   6.1824  29847.69    -0.03    8453.51     0.02
 23   6.1825  29846.47    -0.05    8452.83     0.03
 24   6.1850  29825.49     0.00    8440.28    -0.00
 25   6.1851  29824.05     0.08    8439.36     0.00
 26   6.1852  29823.73     0.10    8439.26     0.11
 27   6.1853  29822.44     0.09    8438.43     0.07
 28   6.2343  29648.33    -0.12    8180.62     0.10
 29   6.2345  29648.55    -0.00    8179.94     0.07
 30   6.2370  29652.47    -0.02    8166.32     0.01
 31   6.2397  29658.08     0.02    8151.78    -0.06
 32   6.2398  29658.10    -0.00    8151.83     0.12
 33   6.2425  29664.99    -0.15    8137.22    -0.08
 34   6.2507  29695.30    -0.05    8093.84    -0.04
 35   6.2508  29695.68    -0.05    8093.33    -0.05
 36   6.2562  29723.21    -0.08    8064.80    -0.03
 37   6.2562  29723.37    -0.09    8064.63    -0.03
 38   6.2563  29723.89     0.04    8064.18    -0.08
 39   6.2564  29724.54     0.04    8063.53    -0.08
 40   9.9716  59488.76 (   0.54)  15527.62 (   0.24)
 41   9.9719  59477.97     0.21   15528.15    -0.03
 42  11.9101  74570.85    -0.11   18855.08     0.01
 43  11.9103  74565.71    -0.03   18856.48    -0.11
 44  11.9106  74560.77     0.01   18858.21     0.20

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.

09DJ143    quality flag:3

Type:     13:4EEEEEE13:4EEEEEE13:4EEEEEE

axisobj        65.347    65.365    65.328
ecceobj         0.427     0.428     0.427
incobj         17.657    17.657    17.657
qmin           36.438    36.324    36.549
qmax           97.266    97.275    97.166
amean          66.062    66.062    66.062
amin           65.210    65.211    65.207
amax           67.224    67.154    67.233
emean           0.436     0.436     0.435
emin            0.424     0.424     0.424
emax            0.448     0.450     0.446
imean          16.100    16.063    16.219
imin           15.675    15.456    15.906
imax           16.445    16.569    16.498
excite_mean     0.517     0.516     0.517
fracstop        1.000     1.000     1.000
cjmean          3.018     3.018     3.018

libcent 0       182.4     181.4     178.8
libamp  0        97.1      84.4     105.8
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       210.0     198.8     211.0
kozaiamp        132.8     120.2     179.9