Orbit Fit and Astrometric record for 02PV170

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: 02PV170   
# Created Tue Oct 24 01:37:20 2017
# Orbit generated from Bernstein formalism
# Fitting   65 observations of   65
# Arc:  12.11y
# First observation: 2002/08/05
#  Last observation: 2014/09/16
Preliminary a, adot, b, bdot, g, gdot:
   0.000058   0.024096   0.000001  -0.000281   0.027131   0.000000
# Chi-squared of fit:    63.43 DOF:  124 RMS:  0.17
# Min/Max residuals:    -0.46    0.46
# Exact a, adot, b, bdot, g, gdot:
  1.417534E-05  2.359921E-02 -2.653038E-07 -2.729044E-04  2.425890E-02 -6.661751E-05
# Covariance matrix:
  6.3288E-14 -1.0312E-14 -1.6795E-16  5.5750E-17  2.8648E-14 -1.9739E-14
 -1.0312E-14  1.6672E-14  9.1876E-17 -1.8858E-16  1.8623E-14  5.7210E-14
 -1.6795E-16  9.1876E-17  4.7771E-14 -4.7181E-15 -2.4424E-16  3.2748E-16
  5.5750E-17 -1.8858E-16 -4.7181E-15  8.7288E-16 -2.5092E-16 -6.8316E-16
  2.8648E-14  1.8623E-14 -2.4424E-16 -2.5092E-16  1.1369E-13  6.8767E-14
 -1.9739E-14  5.7210E-14  3.2748E-16 -6.8316E-16  6.8767E-14  2.0715E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.108074  -32.906460    0.254696   -0.019134   -0.985940  2452491.929453
# Heliocentric elements and errors
Epoch:              2452490.5000  =  2002/08/04
Mean Anomaly:          304.10067 +/-     0.137
Argument of Peri:      295.43623 +/-     0.141
Long of Asc Node:       88.44519 +/-     0.003
Inclination:             1.27181 +/-     0.000
Eccentricity:         0.01281184 +/-    0.0000
Semi-Major Axis:     42.50611419 +/-    0.0022
Time of Perihelion: 2468207.8604 +/-      38.4
Perihelion:          41.96153265 +/-    0.0025
Aphelion:            43.05069572 +/-    0.0026
Period (y)              277.1311 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           35.29140438 +/-    0.0005
Ecliptic Y          -23.13424279 +/-    0.0003
Ecliptic Z           -0.79714691 +/-    0.0000
Ecliptic XDOT         0.00143235 +/-    0.0000
Ecliptic YDOT         0.00223791 +/-    0.0000
Ecliptic ZDOT        -0.00003044 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.20559034 +/-    0.0004
Geocenter to KBO     41.22197690 +/-    0.0006
# Hcoef:  6.24

The following table shows the complete astrometric record for 02PV170. 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 (02PV170) followed by the observatory code and reference code for the source of the astrometry.

2002 08  05.42871  21 58 46.20   -13 31 15.7   21.8R 02PV170   568  Cp2009      
2002 08  05.49142  21 58 45.91   -13 31 17.3   21.7R 02PV170   568  Cp2009      
2002 08  05.55465  21 58 45.62   -13 31 18.8   22.0R 02PV170   568  Cp2009      
2002 09  02.96647  21 56 35.83   -13 42 53.5         02PV170   493  Cp2009      
2002 09  02.97627  21 56 35.77   -13 42 53.5         02PV170   493  Cp2009      
2002 09  03.01871  21 56 35.57   -13 42 54.5         02PV170   493  Cp2009      
2002 09  03.98098  21 56 31.30   -13 43 16.9   21.8R 02PV170   950  Cp2009      
2002 09  03.98617  21 56 31.27   -13 43 16.7         02PV170   493  Cp2009      
2002 09  04.00597  21 56 31.18   -13 43 17.3         02PV170   493  Cp2009      
2002 09  04.01839  21 56 31.12   -13 43 17.8   22.3R 02PV170   950  Cp2009      
2002 09  04.02447  21 56 31.08   -13 43 17.7         02PV170   493  Cp2009      
2002 09  04.03581  21 56 31.04   -13 43 18.3         02PV170   493  Cp2009      
2002 09  04.05896  21 56 30.93   -13 43 18.7   22.3R 02PV170   950  Cp2009      
2002 09  07.98751  21 56 13.65   -13 44 49.1         02PV170   493  Cp2009      
2002 09  08.00041  21 56 13.60   -13 44 49.1         02PV170   493  Cp2009      
2002 09  30.24175  21 54 47.42   -13 52 07.4   22.3R 02PV170   568  Cp2009      
2002 09  30.29888  21 54 47.23   -13 52 08.4   22.3R 02PV170   568  Cp2009      
2002 09  30.36100  21 54 47.02   -13 52 09.4   22.3R 02PV170   568  Cp2009      
2002 10  03.83051  21 54 36.05   -13 53 03.9         02PV170   493  Cp2009      
2002 10  03.88481  21 54 35.88   -13 53 04.6         02PV170   493  Cp2009      
2002 10  03.89791  21 54 35.84   -13 53 04.7         02PV170   493  Cp2009      
2003 06  23.50493  22 06 25.43   -12 50 04.0   22.3i 02PV170   568  Cp2009      
2003 06  23.55634  22 06 25.32   -12 50 04.6   22.3i 02PV170   568  Cp2009      
2003 06  23.60500  22 06 25.21   -12 50 05.3   22.2i 02PV170   568  Cp2009      
2003 07  28.23577  22 04 35.52   -13 00 47.0         02PV170   809  Cp2009      
2003 07  28.33400  22 04 35.11   -13 00 49.4         02PV170   809  Cp2009      
2003 07  28.40166  22 04 34.85   -13 00 50.7         02PV170   809  Cp2009      
2003 07  29.21529  22 04 31.51   -13 01 09.9         02PV170   809  Cp2009      
2003 07  29.43264  22 04 30.59   -13 01 15.0         02PV170   809  Cp2009      
2004 08  12.39845  22 08 38.87   -12 39 43.3   22.3R 02PV170   568  Cp2009      
2004 08  12.42868  22 08 38.73   -12 39 44.0   22.6R 02PV170   568  Cp2009      
2004 08  12.46320  22 08 38.57   -12 39 44.9   22.3R 02PV170   568  Cp2009      
2006 09  24.24688  22 15 55.49   -12 00 56.4   22.0R 02PV170   688  Cs0882      
2009 07  27.37222  22 35 35.81   -10 09 47.8   22.1R 02PV170   688  C~07q9      
2009 07  27.41708  22 35 35.66   -10 09 48.6         02PV170   688  C~07q9      
2010 01  01.11094  22 30 46.79   -10 35 48.5         02PV170   250  S~0M3j      
2010 01  01.11332  22 30 46.80   -10 35 48.5         02PV170   250  S~0M3j      
2010 01  01.14714  22 30 46.93   -10 35 47.6         02PV170   250  S~0M3j      
2010 01  01.14953  22 30 46.94   -10 35 47.6         02PV170   250  S~0M3j      
2010 01  01.15461  22 30 46.94   -10 35 47.3         02PV170   250  S~0M3j      
2010 01  01.16016  22 30 46.97   -10 35 47.1         02PV170   250  S~0M3j      
2010 01  01.16632  22 30 47.00   -10 35 46.9         02PV170   250  S~0M3j      
2010 01  01.17188  22 30 47.02   -10 35 46.8         02PV170   250  S~0M3j      
2011 08  24.43477  22 43 57.529  -09 21 43.42  22.1w 02PV170   F51  C~1vVA      
2011 08  24.44877  22 43 57.463  -09 21 43.81  22.2w 02PV170   F51  C~1vVA      
2011 08  24.46273  22 43 57.398  -09 21 44.20  22.1w 02PV170   F51  C~1vVA      
2011 08  24.47672  22 43 57.337  -09 21 44.54  22.2w 02PV170   F51  C~1vVA      
2013 08  14.51752  22 54 49.905  -08 16 49.49  22.6w 02PV170   F51  C~1vVA      
2013 08  14.53158  22 54 49.819  -08 16 49.88  22.4w 02PV170   F51  C~1vVA      
2013 08  14.54581  22 54 49.772  -08 16 50.25  22.7w 02PV170   F51  C~1vVA      
2014 07  07.58108  23 01 52.563  -07 33 02.97  22.6w 02PV170   F51  C~1vVA      
2014 07  07.58989  23 01 52.542  -07 33 03.11  22.3w 02PV170   F51  C~1vVA      
2014 07  07.59868  23 01 52.521  -07 33 03.48  22.7w 02PV170   F51  C~1vVA      
2014 07  07.60751  23 01 52.515  -07 33 03.10  22.6w 02PV170   F51  C~1vVA      
2014 08  03.48171  23 00 37.431  -07 41 28.41  22.3w 02PV170   F51  C~1vVA      
2014 08  03.49516  23 00 37.371  -07 41 28.88  22.3w 02PV170   F51  C~1vVB      
2014 08  03.50859  23 00 37.331  -07 41 29.32  22.3w 02PV170   F51  C~1vVB      
2014 08  03.52201  23 00 37.274  -07 41 29.49  22.4w 02PV170   F51  C~1vVB      
2014 09  02.35466  22 58 33.405  -07 54 35.48  21.8i 02PV170   F51  C~1vVB      
2014 09  02.36828  22 58 33.344  -07 54 35.73  21.4i 02PV170   F51  C~1vVB      
2014 09  02.39540  22 58 33.216  -07 54 36.42  21.6i 02PV170   F51  C~1vVB      
2014 09  16.31672  22 57 31.045  -08 00 59.03  22.2w 02PV170   F51  C~1vVB      
2014 09  16.32935  22 57 30.990  -08 00 59.30  22.1w 02PV170   F51  C~1vVB      
2014 09  16.34200  22 57 30.932  -08 00 59.49  22.2w 02PV170   F51  C~1vVB      
2014 09  16.35463  22 57 30.871  -08 01 00.00  22.1w 02PV170   F51  C~1vVB      

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     0.25       0.00     0.02
  2   0.0002     -4.52     0.14      -0.05    -0.02
  3   0.0003     -9.01     0.09      -0.01     0.02
  4   0.0781  -2024.68     0.01      -4.80    -0.46
  5   0.0782  -2025.51    -0.12      -4.50    -0.17
  6   0.0783  -2028.59    -0.22      -4.44    -0.14
  7   0.0809  -2094.72     0.08      -4.26    -0.20
  8   0.0809  -2095.07     0.15      -3.92     0.14
  9   0.0810  -2096.50     0.10      -4.04     0.01
 10   0.0810  -2097.50    -0.07      -4.21    -0.17
 11   0.0810  -2098.01    -0.11      -3.92     0.12
 12   0.0811  -2098.76    -0.08      -4.28    -0.25
 13   0.0811  -2100.41    -0.14      -4.11    -0.10
 14   0.0919  -2367.96    -0.19      -3.19    -0.45
 15   0.0919  -2368.65     0.01      -2.94    -0.21
 16   0.1528  -3698.51    -0.14      12.14     0.13
 17   0.1530  -3701.46    -0.13      12.14     0.05
 18   0.1531  -3704.67    -0.13      12.24     0.07
 19   0.1626  -3873.49     0.04      15.21    -0.22
 20   0.1628  -3876.06     0.08      15.39    -0.11
 21   0.1628  -3876.64     0.12      15.50    -0.02
 22   0.8818   7150.80     0.25      -9.84     0.15
 23   0.8819   7149.08     0.22      -9.84     0.21
 24   0.8821   7147.33     0.06      -9.93     0.17
 25   0.9769   5418.89    -0.43     -50.18     0.16
 26   0.9772   5412.44    -0.45     -50.33     0.04
 27   0.9773   5408.42    -0.05     -50.23     0.17
 28   0.9796   5355.94    -0.01     -51.19    -0.10
 29   0.9802   5341.55    -0.06     -51.28    -0.12
 30   2.0205   9199.87     0.33    -115.34     0.32
 31   2.0205   9197.71     0.34    -115.28     0.39
 32   2.0206   9195.19     0.31    -115.29     0.37
 33   4.1364  16033.16     0.25    -217.72    -0.05
 34   6.9759  34937.81    -0.43    -391.28     0.35
 35   6.9760  34935.39    -0.11    -391.19     0.46
 36   7.4078  30285.36    -0.01    -248.54    -0.04
 37   7.4078  30285.50    -0.02    -248.60    -0.09
 38   7.4079  30287.66     0.02    -248.47    -0.00
 39   7.4079  30287.80     0.01    -248.52    -0.06
 40   7.4079  30287.91    -0.20    -248.24     0.21
 41   7.4079  30288.41    -0.05    -248.22     0.23
 42   7.4079  30288.90     0.06    -248.20     0.24
 43   7.4079  30289.22     0.03    -248.22     0.22
 44   9.0514  43180.94     0.03    -521.88    -0.13
 45   9.0514  43179.84    -0.01    -521.87    -0.13
 46   9.0514  43178.76    -0.04    -521.87    -0.13
 47   9.0515  43177.75     0.01    -521.84    -0.10
 48  11.0256  54187.36     0.23    -640.70    -0.19
 49  11.0256  54185.94    -0.17    -640.56    -0.05
 50  11.0256  54185.10     0.02    -640.63    -0.13
 51  11.9210  61530.04    -0.01    -665.82    -0.05
 52  11.9210  61529.66    -0.08    -665.83    -0.05
 53  11.9211  61529.19    -0.24    -666.06    -0.27
 54  11.9211  61529.26     0.14    -665.66     0.14
 55  11.9947  60197.61     0.07    -695.79     0.05
 56  11.9947  60196.52    -0.14    -695.88    -0.04
 57  11.9947  60195.74    -0.05    -696.06    -0.21
 58  11.9948  60194.82    -0.10    -695.88    -0.03
 59  12.0765  58028.81     0.09    -702.16    -0.08
 60  12.0765  58027.80     0.16    -702.03     0.04
 61  12.0766  58025.62     0.12    -701.92     0.13
 62  12.1147  56948.29     0.02    -694.82    -0.09
 63  12.1147  56947.37     0.08    -694.74    -0.03
 64  12.1148  56946.44     0.12    -694.58     0.12
 65  12.1148  56945.32    -0.02    -694.70    -0.02

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.

02PV170    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        42.823    42.829    42.816
ecceobj         0.019     0.019     0.018
incobj          1.273     1.273     1.273
qmin           40.734    40.713    40.744
qmax           44.943    44.934    44.937
amean          42.724    42.731    42.718
amin           42.398    42.410    42.392
amax           43.056    43.059    43.054
emean           0.026     0.026     0.026
emin            0.003     0.003     0.003
emax            0.044     0.044     0.044
imean           1.300     1.297     1.304
imin            0.221     0.221     0.223
imax            1.858     1.851     1.863
excite_mean     0.035     0.035     0.035
fracstop        1.000     1.000     1.000
cjmean          3.085     3.085     3.085

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       191.1     191.3     190.3
kozaiamp        180.0     180.0     180.0