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 Tue Oct 24 01:38:17 2017
# Orbit generated from Bernstein formalism
# Fitting   80 observations of   80
# Arc:   3.87y
# First observation: 2011/08/30
#  Last observation: 2015/07/14
Preliminary a, adot, b, bdot, g, gdot:
   0.000334   0.027206   0.000004   0.000072   0.025715   0.000000
# Chi-squared of fit:    25.62 DOF:  154 RMS:  0.10
# Min/Max residuals:    -0.32    0.30
# Exact a, adot, b, bdot, g, gdot:
  1.708062E-05  2.763479E-02 -8.876120E-09  7.582614E-05  2.557796E-02  3.026806E-03
# Covariance matrix:
  3.7979E-13 -2.6545E-13  4.2165E-16 -5.0905E-16 -1.3918E-13 -1.6475E-12
 -2.6545E-13  2.5276E-13 -5.5388E-16  6.4309E-16  1.4014E-13  1.9065E-12
  4.2165E-16 -5.5388E-16  2.0949E-13 -7.1061E-14 -3.6310E-17 -4.5076E-15
 -5.0905E-16  6.4309E-16 -7.1061E-14  2.6463E-14  1.5260E-16  5.2908E-15
 -1.3918E-13  1.4014E-13 -3.6310E-17  1.5260E-16  1.9329E-13  1.2358E-12
 -1.6475E-12  1.9065E-12 -4.5076E-15  5.2908E-15  1.2358E-12  1.6091E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.328626  -37.216552   -0.237252   -0.039793   -0.977554  2455803.911026
# Heliocentric elements and errors
Epoch:              2455800.5000  =  2011/08/27
Mean Anomaly:           22.50647 +/-     0.019
Argument of Peri:      238.07348 +/-     0.036
Long of Asc Node:       49.06431 +/-     0.008
Inclination:             2.27728 +/-     0.000
Eccentricity:         0.22911091 +/-    0.0001
Semi-Major Axis:     50.13852619 +/-    0.0039
Time of Perihelion: 2447693.4919 +/-       7.0
Perihelion:          38.65124289 +/-    0.0061
Aphelion:            61.62580948 +/-    0.0071
Period (y)              355.0304 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           32.03544803 +/-    0.0005
Ecliptic Y          -24.02854098 +/-    0.0004
Ecliptic Z           -1.58848313 +/-    0.0000
Ecliptic XDOT         0.00204399 +/-    0.0000
Ecliptic YDOT         0.00216503 +/-    0.0000
Ecliptic ZDOT        -0.00000499 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.07697582 +/-    0.0005
Geocenter to KBO     39.09616248 +/-    0.0007
# 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.

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     0.00       0.00     0.01
  2   0.0001     -2.10     0.05       0.12     0.09
  3   0.0001     -3.22    -0.01       0.16     0.11
  4   0.9773   6289.41    -0.01       9.37     0.00
  5   0.9774   6288.38     0.00       9.37    -0.01
  6   0.9774   6287.26    -0.06       9.32    -0.07
  7   0.9775   6286.20    -0.08       9.36    -0.04
  8   1.8729  14571.08     0.17      51.23     0.09
  9   1.8730  14569.99     0.03      51.06    -0.06
 10   1.8730  14569.08     0.02      51.11     0.01
 11   1.8731  14568.04    -0.05      51.08     0.01
 12   1.9303  13201.97     0.11      25.84    -0.05
 13   1.9304  13200.79    -0.07      25.83    -0.06
 14   1.9304  13199.97     0.12      25.79    -0.09
 15   1.9304  13199.00     0.15      25.67    -0.21
 16   1.9985  11377.35    -0.07      29.89     0.02
 17   1.9985  11376.33    -0.06      29.94     0.06
 18   1.9986  11375.31    -0.06      29.90    -0.00
 19   1.9986  11374.34    -0.01      29.96     0.04
 20   2.8285  20960.20    -0.10     101.29    -0.06
 21   2.8285  20959.78    -0.03     101.48     0.16
 22   2.8285  20959.41     0.09     101.21    -0.08
 23   2.8286  20958.77    -0.07     101.37     0.10
 24   2.8532  20560.25     0.11      80.28    -0.10
 25   2.8532  20559.62     0.07      80.42     0.06
 26   2.8532  20559.04     0.09      80.43     0.08
 27   2.8533  20558.30    -0.05      80.34     0.02
 28   2.9024  19521.54    -0.05      50.28     0.02
 29   2.9025  19520.83     0.04      50.32     0.07
 30   2.9025  19519.98    -0.00      50.27     0.03
 31   2.9025  19519.20     0.02      50.25     0.02
 32   2.9106  19324.87    -0.02      46.88    -0.07
 33   2.9106  19324.10    -0.02      46.92    -0.03
 34   2.9106  19323.33    -0.02      46.95     0.01
 35   2.9107  19322.69     0.10      46.98     0.05
 36   2.9269  18914.92    -0.02      41.94     0.03
 37   2.9270  18913.92    -0.05      41.96     0.05
 38   2.9270  18912.96    -0.05      41.86    -0.04
 39   2.9270  18912.06     0.00      41.83    -0.07
 40   2.9296  18845.07    -0.03      41.25    -0.02
 41   2.9297  18844.28     0.15      41.45     0.18
 42   2.9297  18843.01    -0.16      41.31     0.04
 43   2.9298  18842.28     0.06      41.20    -0.07
 44   2.9324  18774.21     0.01      40.92     0.22
 45   2.9324  18773.38     0.16      40.51    -0.19
 46   2.9325  18772.22    -0.02      40.63    -0.06
 47   2.9325  18771.23    -0.03      40.75     0.05
 48   2.9570  18122.40    -0.30      38.26     0.08
 49   2.9570  18121.46    -0.32      38.25     0.06
 50   2.9571  18119.87    -0.05      38.06    -0.14
 51   2.9598  18047.82    -0.06      38.24     0.03
 52   2.9598  18046.86    -0.09      38.10    -0.12
 53   2.9599  18045.96    -0.07      38.11    -0.12
 54   2.9924  17165.88     0.11      43.28     0.09
 55   2.9925  17164.83     0.08      43.35     0.13
 56   2.9925  17163.87     0.14      43.25     0.02
 57   2.9925  17162.78     0.06      43.37     0.12
 58   3.0361  16033.62    -0.02      63.23     0.05
 59   3.0361  16032.84    -0.01      63.35     0.15
 60   3.0362  16032.08     0.03      63.16    -0.07
 61   3.0362  16031.59    -0.16      63.30     0.06
 62   3.0362  16030.88     0.01      63.40     0.13
 63   3.0363  16029.79    -0.20      63.06    -0.23
 64   3.0363  16029.14     0.03      63.28    -0.04
 65   3.0551  15582.76    -0.15      76.17    -0.08
 66   3.0551  15582.18     0.05      76.21    -0.07
 67   3.0552  15581.42     0.07      76.28    -0.03
 68   3.0552  15580.60     0.03      76.34    -0.00
 69   3.2165  13897.15     0.09     257.78    -0.30
 70   3.2166  13897.34     0.13     258.18     0.04
 71   3.2166  13897.66     0.30     258.10    -0.08
 72   3.2166  13897.33    -0.18     257.93    -0.30
 73   3.8661  25906.54     0.08      86.03     0.01
 74   3.8661  25905.86    -0.01      86.07     0.07
 75   3.8662  25905.35     0.09      86.15     0.16
 76   3.8662  25904.72     0.05      86.06     0.09
 77   3.8717  25796.51    -0.09      82.25    -0.02
 78   3.8717  25795.92    -0.04      82.16    -0.09
 79   3.8717  25795.28    -0.05      82.38     0.14
 80   3.8718  25794.77     0.08      82.21    -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        50.009    50.021    49.997
ecceobj         0.228     0.228     0.228
incobj          2.279     2.279     2.279
qmin           38.069    38.078    38.066
qmax           62.607    62.579    62.620
amean          50.042    50.045    50.045
amin           49.542    49.539    49.544
amax           50.603    50.637    50.619
emean           0.225     0.225     0.225
emin            0.213     0.214     0.214
emax            0.238     0.237     0.238
imean           1.729     1.736     1.744
imin            1.375     1.377     1.384
imax            2.088     2.091     2.093
excite_mean     0.227     0.227     0.227
fracstop        1.000     1.000     1.000
cjmean          3.113     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       200.7     197.0     196.1
kozaiamp        180.0     180.0     180.0