Orbit Fit and Astrometric record for 13PV74

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: 13PV74    
# Created Wed Jul 18 01:38:14 2018
# Orbit generated from Bernstein formalism
# Fitting   83 observations of   83
# Arc:   6.80y
# First observation: 2008/09/24
#  Last observation: 2015/07/14
Preliminary a, adot, b, bdot, g, gdot:
   0.000337   0.027662   0.000011  -0.000028   0.026940   0.000000
# Chi-squared of fit:    29.09 DOF:  160 RMS:  0.10
# Min/Max residuals:    -0.32    0.30
# Exact a, adot, b, bdot, g, gdot:
  1.693541E-05  2.796713E-02 -7.015296E-07 -2.606263E-05  2.563817E-02  2.355933E-03
# Covariance matrix:
  4.6528E-13 -1.7109E-13 -4.4989E-16  1.5849E-16 -8.6681E-14 -5.5899E-13
 -1.7109E-13  1.0169E-13  2.1299E-16 -1.1917E-16  4.8557E-14  4.2857E-13
 -4.4989E-16  2.1299E-16  3.0983E-13 -5.3939E-14  8.6568E-16  1.3506E-15
  1.5849E-16 -1.1917E-16 -5.3939E-14  9.9578E-15 -8.9712E-17 -5.6934E-16
 -8.6681E-14  4.8557E-14  8.6568E-16 -8.9712E-17  1.3011E-13  2.7616E-13
 -5.5899E-13  4.2857E-13  1.3506E-15 -5.6934E-16  2.7616E-13  2.0256E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.319884  -42.449641   -0.696832   -0.029117   -0.719048  2454733.661827
# Heliocentric elements and errors
Epoch:              2454730.5000  =  2008/09/21
Mean Anomaly:           19.61741 +/-     0.008
Argument of Peri:      237.72769 +/-     0.015
Long of Asc Node:       48.98011 +/-     0.005
Inclination:             2.27733 +/-     0.000
Eccentricity:         0.23339145 +/-    0.0001
Semi-Major Axis:     50.35429041 +/-    0.0035
Time of Perihelion: 2447618.4919 +/-       2.8
Perihelion:          38.60202945 +/-    0.0037
Aphelion:            62.10655136 +/-    0.0050
Period (y)              357.3246 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           29.75988326 +/-    0.0004
Ecliptic Y          -26.27990613 +/-    0.0004
Ecliptic Z           -1.57883910 +/-    0.0000
Ecliptic XDOT         0.00220726 +/-    0.0000
Ecliptic YDOT         0.00203616 +/-    0.0000
Ecliptic ZDOT        -0.00001308 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.73382502 +/-    0.0004
Geocenter to KBO     39.00433831 +/-    0.0005
# Hcoef:  5.65

The following table shows the complete astrometric record for 13PV74. 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 (13PV74) followed by the observatory code and reference code for the source of the astrometry.

2008 09  24.161073 21 22 57.02   -17 46 54.9   21.7V 13PV74    645  C~2e9c      
2008 09  24.161902 21 22 57.01   -17 46 55.2   21.2V 13PV74    645  C~2e9c      
2008 09  24.164390 21 22 57.02   -17 46 55.1   22.3V 13PV74    645  C~2e9c      
2011 08  30.41026  21 43 41.075  -16 07 15.60  21.5w 13PV74    F51  C~1vX1      
2011 08  30.43976  21 43 40.935  -16 07 16.18  21.7w 13PV74    F51  C~1vX1      
2011 08  30.45455  21 43 40.860  -16 07 16.51  21.5w 13PV74    F51  C~1vX1      
2012 08  21.38686  21 50 31.587  -15 32 09.24  21.6w 13PV74    F51  C~1vX1      
2012 08  21.40070  21 50 31.520  -15 32 09.59  21.5w 13PV74    F51  C~1vX1      
2012 08  21.41484  21 50 31.448  -15 32 10.01  21.5w 13PV74    F51  C~1vX1      
2012 08  21.42868  21 50 31.378  -15 32 10.33  21.6w 13PV74    F51  C~1vX1      
2013 07  14.50041  21 59 26.585  -14 44 23.29  21.6w 13PV74    F51  C~1vX1      
2013 07  14.51645  21 59 26.519  -14 44 23.83  21.7w 13PV74    F51  C~1vX1      
2013 07  14.53191  21 59 26.459  -14 44 24.10  21.7w 13PV74    F51  C~1vX1      
2013 07  14.54826  21 59 26.393  -14 44 24.48  21.6w 13PV74    F51  C~1vX1      
2013 08  04.45915  21 57 59.018  -14 52 38.90  21.7w 13PV74    F51  C~1vX1      
2013 08  04.47308  21 57 58.942  -14 52 39.32  21.5w 13PV74    F51  C~1vX1      
2013 08  04.48697  21 57 58.890  -14 52 39.63  21.6w 13PV74    F51  C~1vX1      
2013 08  04.50084  21 57 58.830  -14 52 40.08  21.7w 13PV74    F51  C~1vX1      
2013 08  29.35900  21 56 01.132  -15 03 01.27  21.7w 13PV74    F51  C~1vX1      
2013 08  29.37283  21 56 01.065  -15 03 01.57  21.5w 13PV74    F51  C~1vX1      
2013 08  29.38665  21 56 01.000  -15 03 01.96  21.5w 13PV74    F51  C~1vX1      
2013 08  29.40046  21 56 00.936  -15 03 02.23  21.7w 13PV74    F51  C~1vX1      
2014 06  28.50893  22 06 14.237  -14 06 34.30  21.8w 13PV74    F51  C~1vX1      
2014 06  28.52102  22 06 14.206  -14 06 34.26  21.9w 13PV74    F51  C~1vX1      
2014 06  28.53312  22 06 14.189  -14 06 34.64  21.6w 13PV74    F51  C~1vX1      
2014 06  28.54517  22 06 14.144  -14 06 34.72  21.7w 13PV74    F51  C~1vX1      
2014 07  07.53354  22 05 49.285  -14 09 13.87  21.8w 13PV74    F51  C~1vX1      
2014 07  07.54536  22 05 49.241  -14 09 13.96  21.7w 13PV74    F51  C~1vX1      
2014 07  07.55718  22 05 49.204  -14 09 14.16  22.0w 13PV74    F51  C~1vX2      
2014 07  07.56901  22 05 49.159  -14 09 14.50  21.5w 13PV74    F51  C~1vX2      
2014 07  25.52182  22 04 43.798  -14 15 44.95  21.7w 13PV74    F51  C~1vX2      
2014 07  25.53393  22 04 43.752  -14 15 45.16  21.6w 13PV74    F51  C~1vX2      
2014 07  25.54604  22 04 43.699  -14 15 45.50  21.5w 13PV74    F51  C~1vX2      
2014 07  25.55815  22 04 43.650  -14 15 45.79  21.5w 13PV74    F51  C~1vX2      
2014 07  28.49973  22 04 31.330  -14 16 56.78  21.8w 13PV74    F51  C~1vX2      
2014 07  28.51100  22 04 31.280  -14 16 57.02  21.8w 13PV74    F51  C~1vX2      
2014 07  28.52229  22 04 31.230  -14 16 57.26  21.5w 13PV74    F51  C~1vX2      
2014 07  28.53355  22 04 31.188  -14 16 57.45  21.7w 13PV74    F51  C~1vX2      
2014 08  03.47089  22 04 05.274  -14 19 24.44  21.7w 13PV74    F51  C~1vX2      
2014 08  03.48436  22 04 05.210  -14 19 24.77  21.7w 13PV74    F51  C~1vX2      
2014 08  03.49780  22 04 05.151  -14 19 25.19  21.6w 13PV74    F51  C~1vX2      
2014 08  03.51124  22 04 05.094  -14 19 25.54  21.5w 13PV74    F51  C~1vX2      
2014 08  04.46323  22 04 00.829  -14 19 49.44  21.8w 13PV74    F51  C~1vX2      
2014 08  04.47663  22 04 00.774  -14 19 49.53  21.6w 13PV74    F51  C~1vX2      
2014 08  04.49002  22 04 00.696  -14 19 50.10  21.7w 13PV74    F51  C~1vX2      
2014 08  04.50336  22 04 00.652  -14 19 50.46  21.8w 13PV74    F51  C~1vX2      
2014 08  05.46455  22 03 56.310  -14 20 14.46  21.6w 13PV74    F51  C~1vX2      
2014 08  05.47817  22 03 56.267  -14 20 15.13  21.6w 13PV74    F51  C~1vX2      
2014 08  05.49168  22 03 56.190  -14 20 15.42  21.6w 13PV74    F51  C~1vX2      
2014 08  05.50519  22 03 56.124  -14 20 15.66  21.5w 13PV74    F51  C~1vX2      
2014 08  14.45545  22 03 14.708  -14 24 04.05  21.0i 13PV74    F51  C~1vX2      
2014 08  14.46786  22 03 14.648  -14 24 04.39  20.7i 13PV74    F51  C~1vX2      
2014 08  14.49264  22 03 14.551  -14 24 05.12  21.2i 13PV74    F51  C~1vX2      
2014 08  15.47082  22 03 09.938  -14 24 30.03  21.1i 13PV74    F51  C~1vX2      
2014 08  15.48318  22 03 09.880  -14 24 30.50  21.2i 13PV74    F51  C~1vX2      
2014 08  15.49558  22 03 09.822  -14 24 30.81  21.1i 13PV74    F51  C~1vX2      
2014 08  27.39206  22 02 13.359  -14 29 32.04  21.6w 13PV74    F51  C~1vX2      
2014 08  27.40566  22 02 13.290  -14 29 32.35  21.6w 13PV74    F51  C~1vX2      
2014 08  27.41931  22 02 13.231  -14 29 32.77  21.6w 13PV74    F51  C~1vX2      
2014 08  27.43291  22 02 13.158  -14 29 33.04  21.5w 13PV74    F51  C~1vX2      
2014 09  12.34947  22 01 00.277  -14 35 46.25  21.1i 13PV74    F51  C~1vX2      
2014 09  12.36109  22 01 00.224  -14 35 46.41  21.2i 13PV74    F51  C~1vX2      
2014 09  12.37271  22 01 00.180  -14 35 46.85  20.9i 13PV74    F51  C~1vX2      
2014 09  12.37712  22 01 00.145  -14 35 46.89  21.1i 13PV74    F51  C~1vX2      
2014 09  12.39003  22 01 00.097  -14 35 47.04  21.1i 13PV74    F51  C~1vX2      
2014 09  12.40291  22 01 00.035  -14 35 47.73  21.2i 13PV74    F51  C~1vX2      
2014 09  12.41581  22 00 59.988  -14 35 47.75  21.1i 13PV74    F51  C~1vX2      
2014 09  19.28842  22 00 31.020  -14 38 10.28  21.7w 13PV74    F51  C~1vX2      
2014 09  19.30069  22 00 30.982  -14 38 10.44  21.7w 13PV74    F51  C~1vX2      
2014 09  19.31298  22 00 30.931  -14 38 10.64  21.6w 13PV74    F51  C~1vX2      
2014 09  19.32527  22 00 30.877  -14 38 10.87  21.8w 13PV74    F51  C~1vX2      
2014 11  17.24463  21 58 38.288  -14 45 02.42  21.7w 13PV74    F51  C~1vX2      
2014 11  17.25773  21 58 38.291  -14 45 01.98  21.9w 13PV74    F51  C~1vX2      
2014 11  17.27010  21 58 38.313  -14 45 01.94  22.1w 13PV74    F51  C~1vX2      
2014 11  17.28247  21 58 38.296  -14 45 02.21  22.0w 13PV74    F51  C~1vX2      
2015 07  12.50093  22 11 27.904  -13 37 48.00  21.8w 13PV74    F51  C~1vX2      
2015 07  12.51206  22 11 27.860  -13 37 48.20  21.8w 13PV74    F51  C~1vX2      
2015 07  12.52321  22 11 27.826  -13 37 48.31  21.9w 13PV74    F51  C~1vX2      
2015 07  12.53436  22 11 27.788  -13 37 48.62  21.6w 13PV74    F51  C~1vX2      
2015 07  14.54386  22 11 21.060  -13 38 30.38  21.6w 13PV74    F51  C~1vX2      
2015 07  14.55526  22 11 21.025  -13 38 30.67  21.8w 13PV74    F51  C~1vX2      
2015 07  14.56661  22 11 20.979  -13 38 30.70  21.9w 13PV74    F51  C~1vX2      
2015 07  14.57799  22 11 20.951  -13 38 31.03  21.8w 13PV74    F51  C~1vX2      

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     0.06       0.00     0.14
  2   0.0000     -0.23    -0.12      -0.24    -0.10
  3   0.0000     -0.06     0.17      -0.19    -0.06
  4   2.9302  18875.95    -0.12     -66.52     0.02
  5   2.9303  18873.84    -0.07     -66.39     0.09
  6   2.9303  18872.70    -0.13     -66.34     0.12
  7   3.9075  25235.77    -0.03     -80.65     0.00
  8   3.9076  25234.73    -0.02     -80.65    -0.01
  9   3.9076  25233.59    -0.09     -80.69    -0.07
 10   3.9076  25232.52    -0.11     -80.65    -0.04
 11   4.8031  33664.76     0.20     -69.54     0.10
 12   4.8032  33663.65     0.06     -69.71    -0.06
 13   4.8032  33662.71     0.05     -69.66     0.01
 14   4.8033  33661.66    -0.02     -69.68     0.01
 15   4.8605  32266.93     0.13     -90.05    -0.05
 16   4.8605  32265.72    -0.05     -90.05    -0.06
 17   4.8606  32264.89     0.15     -90.08    -0.09
 18   4.8606  32263.89     0.18     -90.20    -0.21
 19   4.9287  30406.82    -0.05     -79.08     0.03
 20   4.9287  30405.79    -0.05     -79.03     0.06
 21   4.9287  30404.75    -0.05     -79.07    -0.00
 22   4.9288  30403.76     0.00     -79.00     0.05
 23   5.7587  40210.31    -0.09     -42.92    -0.06
 24   5.7587  40209.89    -0.01     -42.72     0.17
 25   5.7587  40209.51     0.11     -42.99    -0.08
 26   5.7588  40208.85    -0.06     -42.83     0.11
 27   5.7834  39799.41     0.13     -62.70    -0.10
 28   5.7834  39798.76     0.09     -62.55     0.06
 29   5.7834  39798.16     0.11     -62.55     0.08
 30   5.7835  39797.40    -0.04     -62.64     0.02
 31   5.8326  38733.01    -0.04     -89.18     0.02
 32   5.8326  38732.29     0.06     -89.14     0.07
 33   5.8327  38731.42     0.01     -89.18     0.03
 34   5.8327  38730.62     0.04     -89.20     0.02
 35   5.8408  38531.23    -0.01     -91.87    -0.07
 36   5.8408  38530.44    -0.01     -91.84    -0.03
 37   5.8408  38529.65    -0.01     -91.80     0.01
 38   5.8409  38528.99     0.12     -91.76     0.05
 39   5.8571  38110.72    -0.01     -95.33     0.03
 40   5.8571  38109.70    -0.04     -95.31     0.05
 41   5.8572  38108.72    -0.04     -95.40    -0.04
 42   5.8572  38107.79     0.01     -95.43    -0.07
 43   5.8598  38039.09    -0.02     -95.76    -0.02
 44   5.8599  38038.29     0.16     -95.56     0.18
 45   5.8599  38036.98    -0.16     -95.69     0.04
 46   5.8599  38036.23     0.08     -95.80    -0.07
 47   5.8626  37966.43     0.02     -95.83     0.22
 48   5.8626  37965.58     0.18     -96.24    -0.19
 49   5.8626  37964.39    -0.01     -96.11    -0.06
 50   5.8627  37963.37    -0.02     -96.00     0.05
 51   5.8872  37298.26    -0.30     -96.06     0.08
 52   5.8872  37297.30    -0.32     -96.07     0.06
 53   5.8873  37295.67    -0.04     -96.25    -0.15
 54   5.8900  37221.84    -0.05     -95.79     0.03
 55   5.8900  37220.85    -0.09     -95.94    -0.12
 56   5.8900  37219.93    -0.06     -95.93    -0.13
 57   5.9226  36318.48     0.12     -87.36     0.09
 58   5.9226  36317.40     0.09     -87.30     0.13
 59   5.9227  36316.42     0.15     -87.39     0.02
 60   5.9227  36315.30     0.07     -87.26     0.12
 61   5.9663  35159.81    -0.02     -62.92     0.05
 62   5.9663  35159.01    -0.00     -62.80     0.15
 63   5.9664  35158.24     0.04     -62.99    -0.07
 64   5.9664  35157.73    -0.16     -62.84     0.06
 65   5.9664  35157.01     0.02     -62.74     0.14
 66   5.9664  35155.89    -0.20     -63.07    -0.23
 67   5.9665  35155.23     0.04     -62.84    -0.04
 68   5.9853  34698.78    -0.15     -48.14    -0.08
 69   5.9853  34698.19     0.06     -48.09    -0.07
 70   5.9854  34697.41     0.08     -48.02    -0.03
 71   5.9854  34696.57     0.04     -47.96    -0.00
 72   6.1467  32977.29     0.09     141.68    -0.31
 73   6.1467  32977.49     0.13     142.09     0.04
 74   6.1468  32977.81     0.30     142.01    -0.08
 75   6.1468  32977.48    -0.18     141.84    -0.30
 76   6.7963  45303.36     0.03     -77.06     0.01
 77   6.7963  45302.65    -0.05     -77.02     0.07
 78   6.7963  45302.13     0.04     -76.94     0.16
 79   6.7964  45301.47     0.00     -77.03     0.09
 80   6.8019  45189.80    -0.14     -80.48    -0.02
 81   6.8019  45189.19    -0.09     -80.57    -0.09
 82   6.8019  45188.52    -0.10     -80.35     0.14
 83   6.8020  45188.00     0.03     -80.52    -0.01

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.

13PV74    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        50.010    50.020    49.999
ecceobj         0.228     0.228     0.228
incobj          2.279     2.279     2.279
qmin           38.063    38.059    38.063
qmax           62.732    62.636    62.693
amean          50.045    50.045    50.045
amin           49.556    49.537    49.549
amax           50.641    50.642    50.649
emean           0.225     0.226     0.226
emin            0.213     0.213     0.213
emax            0.239     0.238     0.238
imean           1.732     1.756     1.752
imin            1.379     1.394     1.398
imax            2.088     2.113     2.092
excite_mean     0.227     0.228     0.228
fracstop        1.000     1.000     1.000
cjmean          3.112     3.112     3.112

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       199.5     195.2     197.2
kozaiamp        180.0     179.9     180.0