Orbit Fit and Astrometric record for 13NL24

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: 13NL24    
# Created Tue Mar 19 01:09:39 2019
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   93 observations of   93
# Arc:   7.18y
# First observation: 2010/08/18
#  Last observation: 2017/10/23
# Chi-squared of fit:    54.66 DOF:  180 RMS:  0.14
# Min/Max residuals:    -0.35    0.50
# Exact a, adot, b, bdot, g, gdot:
  2.340723E-05  6.162113E-02  6.072645E-07  2.848403E-03  4.183421E-02  3.639795E-03
# Covariance matrix:
  2.4126E-13 -1.0767E-13  6.4994E-15 -4.0737E-15 -4.9481E-14 -1.7444E-13
 -1.0767E-13  6.0714E-14 -4.1756E-15  2.6340E-15  2.2795E-14  1.1215E-13
  6.4994E-15 -4.1756E-15  9.8727E-14 -1.8962E-14 -1.3183E-15 -8.3558E-15
 -4.0737E-15  2.6340E-15 -1.8962E-14  4.3919E-15  7.0577E-16  5.2914E-15
 -4.9481E-14  2.2795E-14 -1.3183E-15  7.0577E-16  7.4242E-14  3.4767E-14
 -1.7444E-13  1.1215E-13 -8.3558E-15  5.2914E-15  3.4767E-14  2.2453E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -3.985159  -53.649600   -0.323552   -0.066398   -0.952286  2455426.829756
# Heliocentric elements and errors
Epoch:              2455426.5000  =  2010/08/18
Mean Anomaly:            6.12260 +/-     0.001
Argument of Peri:      290.19813 +/-     0.002
Long of Asc Node:        2.06537 +/-     0.001
Inclination:             4.67586 +/-     0.000
Eccentricity:         0.38257375 +/-    0.0000
Semi-Major Axis:     39.90011687 +/-    0.0018
Time of Perihelion: 2453860.8552 +/-       0.2
Perihelion:          24.63537960 +/-    0.0015
Aphelion:            55.16485414 +/-    0.0027
Period (y)              252.0400 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           14.96513082 +/-    0.0001
Ecliptic Y          -19.78410873 +/-    0.0001
Ecliptic Z           -1.66121871 +/-    0.0000
Ecliptic XDOT         0.00339737 +/-    0.0000
Ecliptic YDOT         0.00219479 +/-    0.0000
Ecliptic ZDOT         0.00016938 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   24.86209537 +/-    0.0001
Geocenter to KBO     23.90388503 +/-    0.0002
# Hcoef:  8.23

The following table shows the complete astrometric record for 13NL24. 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 (13NL24) followed by the observatory code and reference code for the source of the astrometry.

2010 08  18.32899  20 39 13.635  -22 32 31.34  22.1G 13NL24    F51  C~2r7P      
2010 08  18.34010  20 39 13.548  -22 32 31.64  22.5G 13NL24    F51  C~2r7P      
2011 07  26.44083  20 56 36.483  -21 16 03.01  22.1w 13NL24    F51  C~1vX0      
2011 07  26.45456  20 56 36.377  -21 16 03.33  21.9w 13NL24    F51  C~1vX0      
2011 07  26.46832  20 56 36.267  -21 16 03.63  21.9w 13NL24    F51  C~1vX0      
2011 07  26.48210  20 56 36.163  -21 16 04.22  21.9w 13NL24    F51  C~1vX0      
2011 08  02.42001  20 55 43.092  -21 19 30.20  21.6G 13NL24    F51  C~2r7P      
2011 08  02.43213  20 55 43.013  -21 19 30.41  22.0G 13NL24    F51  C~2r7P      
2011 08  02.44207  20 55 42.922  -21 19 30.89  21.8G 13NL24    F51  C~2r7P      
2011 08  17.35823  20 53 49.267  -21 26 19.53  22.7G 13NL24    F51  C~2r7P      
2011 11  16.21350  20 50 15.250  -21 26 20.57  22.2G 13NL24    F51  C~2r7P      
2011 11  16.21836  20 50 15.302  -21 26 20.82  22.1G 13NL24    F51  C~2r7P      
2011 11  16.22323  20 50 15.304  -21 26 21.06  22.5G 13NL24    F51  C~2r7P      
2012 07  28.46660  21 10 17.758  -20 07 07.31  21.6G 13NL24    F51  C~2r7P      
2012 08  21.39215  21 07 18.270  -20 18 57.50  22.6w 13NL24    F51  C~1vX0      
2012 08  21.40629  21 07 18.142  -20 18 57.43  22.2w 13NL24    F51  C~1vX0      
2012 08  21.42013  21 07 18.081  -20 18 58.14  22.1w 13NL24    F51  C~1vX0      
2013 06  12.58476  21 28 04.887  -18 32 12.62  22.7G 13NL24    F51  C~2r7P      
2013 07  14.48789  21 25 33.393  -18 46 02.18  22.0w 13NL24    F51  C~1vX0      
2013 07  14.50394  21 25 33.293  -18 46 02.68  22.1w 13NL24    F51  C~1vX1      
2013 07  14.51939  21 25 33.189  -18 46 03.19  22.2w 13NL24    F51  C~1vX1      
2013 07  14.53483  21 25 33.088  -18 46 03.68  22.3w 13NL24    F51  C~1vX1      
2013 08  29.35240  21 20 04.296  -19 10 00.61  22.0w 13NL24    F51  C~1vX1      
2013 08  29.36624  21 20 04.185  -19 10 00.83  22.1w 13NL24    F51  C~1vX1      
2013 08  29.38008  21 20 04.095  -19 10 01.20  22.3w 13NL24    F51  C~1vX1      
2013 08  29.39389  21 20 03.993  -19 10 01.35  22.2w 13NL24    F51  C~1vX1      
2014 07  25.47977  21 37 34.137  -17 35 56.09  22.3G 13NL24    F51  C~2r7P      
2014 07  25.49101  21 37 34.059  -17 35 56.61  22.4G 13NL24    F51  C~2r7P      
2014 07  25.50227  21 37 33.977  -17 35 57.11  21.9G 13NL24    F51  C~2r7P      
2014 07  25.51350  21 37 33.909  -17 35 57.30  22.1G 13NL24    F51  C~2r7P      
2014 07  28.45007  21 37 13.790  -17 37 36.61  21.9G 13NL24    F51  C~2r7P      
2014 07  28.46193  21 37 13.710  -17 37 36.93  22.0G 13NL24    F51  C~2r7P      
2014 07  28.47380  21 37 13.636  -17 37 37.37  22.4G 13NL24    F51  C~2r7P      
2014 07  28.48567  21 37 13.548  -17 37 37.93  22.2G 13NL24    F51  C~2r7P      
2014 07  31.45811  21 36 52.763  -17 39 19.07  22.0G 13NL24    F51  C~2r7P      
2014 07  31.45877  21 36 52.729  -17 39 19.15  22.1G 13NL24    F51  C~2r7P      
2014 07  31.46997  21 36 52.657  -17 39 19.43  22.1G 13NL24    F51  C~2r7P      
2014 07  31.47063  21 36 52.649  -17 39 19.23  22.4G 13NL24    F51  C~2r7P      
2014 08  01.49956  21 36 45.351  -17 39 54.68  21.1G 13NL24    F51  C~2r7P      
2014 08  01.50022  21 36 45.363  -17 39 54.67  22.0G 13NL24    F51  C~2r7P      
2014 08  01.51146  21 36 45.280  -17 39 55.00  21.6G 13NL24    F51  C~2r7P      
2014 08  01.51212  21 36 45.277  -17 39 55.01  22.2G 13NL24    F51  C~2r7P      
2014 08  15.40587  21 35 04.274  -17 47 45.08  22.0G 13NL24    F51  C~2r7P      
2014 08  15.41777  21 35 04.174  -17 47 45.66  22.0G 13NL24    F51  C~2r7P      
2014 08  15.42965  21 35 04.097  -17 47 45.97  21.9G 13NL24    F51  C~2r7P      
2014 08  15.44156  21 35 04.018  -17 47 46.49  22.0G 13NL24    F51  C~2r7P      
2014 08  24.41607  21 33 58.532  -17 52 34.07  22.0G 13NL24    F51  C~2r7P      
2014 09  11.34094  21 31 56.900  -18 00 47.23  22.2G 13NL24    F51  C~2r7P      
2014 09  29.33097  21 30 20.330  -18 06 16.27  22.2G 13NL24    F51  C~2r7P      
2015 07  14.48322  21 51 30.987  -16 12 03.64  22.3w 13NL24    F51  C~1vX1      
2015 07  14.50559  21 51 30.881  -16 12 04.37  22.1w 13NL24    F51  C~1vX1      
2015 07  14.51677  21 51 30.814  -16 12 04.71  22.1w 13NL24    F51  C~1vX1      
2015 08  17.40066  21 47 45.170  -16 31 18.52  22.1G 13NL24    F51  C~2r7P      
2015 09  06.33871  21 45 24.431  -16 41 57.76  22.0G 13NL24    F51  C~2r7P      
2015 09  06.34969  21 45 24.360  -16 41 57.98  22.1G 13NL24    F51  C~2r7P      
2015 09  06.36070  21 45 24.284  -16 41 58.29  22.2G 13NL24    F51  C~2r7P      
2015 09  06.37167  21 45 24.214  -16 41 58.65  21.9G 13NL24    F51  C~2r7P      
2015 09  08.42651  21 45 10.558  -16 42 56.94  22.3G 13NL24    F51  C~2r7P      
2015 09  08.43763  21 45 10.495  -16 42 57.27  22.1G 13NL24    F51  C~2r7P      
2015 09  08.46066  21 45 10.341  -16 42 57.87  22.8G 13NL24    F51  C~2r7P      
2015 10  02.31141  21 42 56.865  -16 51 29.60  22.6G 13NL24    F51  C~2r7P      
2015 10  03.27287  21 42 52.684  -16 51 42.55  22.9G 13NL24    F51  C~2r7P      
2015 10  03.28386  21 42 52.645  -16 51 42.95  22.3G 13NL24    F51  C~2r7P      
2015 10  03.29484  21 42 52.593  -16 51 43.09  22.5G 13NL24    F51  C~2r7P      
2015 10  03.30581  21 42 52.539  -16 51 43.19  22.0G 13NL24    F51  C~2r7P      
2015 10  08.29055  21 42 32.746  -16 52 41.47  22.8G 13NL24    F51  C~2r7P      
2015 10  08.30180  21 42 32.699  -16 52 41.74  22.7G 13NL24    F51  C~2r7P      
2015 10  08.31301  21 42 32.640  -16 52 42.00  22.6G 13NL24    F51  C~2r7P      
2015 10  08.32421  21 42 32.627  -16 52 41.86  22.7G 13NL24    F51  C~2r7P      
2016 07  07.53956  22 04 22.302  -14 50 04.10  22.6G 13NL24    F51  C~2r7P      
2016 08  03.41149  22 01 47.460  -15 04 27.83  22.2G 13NL24    F51  C~2r7P      
2016 08  03.42312  22 01 47.404  -15 04 28.34  22.3G 13NL24    F51  C~2r7P      
2016 08  03.43474  22 01 47.312  -15 04 28.76  21.9G 13NL24    F51  C~2r7P      
2016 08  26.37089  21 59 06.527  -15 18 04.01  22.2G 13NL24    F51  C~2r7P      
2016 09  08.31645  21 57 37.379  -15 25 02.86  22.3G 13NL24    F51  C~2r7P      
2016 10  27.27245  21 54 03.827  -15 37 53.00  22.3G 13NL24    F51  C~2r7P      
2017 07  05.56302  22 16 26.560  -13 29 25.97  22.2G 13NL24    F51  C~2r7P      
2017 07  05.57408  22 16 26.521  -13 29 26.17  22.2G 13NL24    F51  C~2r7P      
2017 07  05.58513  22 16 26.472  -13 29 26.59  22.2G 13NL24    F51  C~2r7P      
2017 07  05.59618  22 16 26.429  -13 29 26.83  22.6G 13NL24    F51  C~2r7P      
2017 07  08.52713  22 16 14.574  -13 30 40.42  22.3G 13NL24    F51  C~2r7P      
2017 07  24.49621  22 14 54.280  -13 38 34.65  22.2G 13NL24    F51  C~2r7P      
2017 09  14.36956  22 09 08.344  -14 08 41.69  22.1G 13NL24    F51  C~2r7P      
2017 09  14.38099  22 09 08.271  -14 08 41.86  21.9G 13NL24    F51  C~2r7P      
2017 09  14.39241  22 09 08.197  -14 08 42.33  22.1G 13NL24    F51  C~2r7P      
2017 09  14.40381  22 09 08.111  -14 08 42.65  21.9G 13NL24    F51  C~2r7P      
2017 09  21.36520  22 08 25.357  -14 11 59.34  21.8G 13NL24    F51  C~2r7P      
2017 09  21.37620  22 08 25.290  -14 11 59.88  21.7G 13NL24    F51  C~2r7P      
2017 09  21.38719  22 08 25.236  -14 12 00.26  22.3G 13NL24    F51  C~2r7P      
2017 09  21.39817  22 08 25.158  -14 12 00.43  22.1G 13NL24    F51  C~2r7P      
2017 10  10.33317  22 06 50.119  -14 18 35.98  22.3G 13NL24    F51  C~2r7P      
2017 10  11.28092  22 06 46.369  -14 18 49.56  22.6G 13NL24    F51  C~2r7P      
2017 10  23.33237  22 06 08.341  -14 20 43.33  23.1G 13NL24    F51  C~2r7P      

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     0.09
  2   0.0000      0.00    -0.11       0.00     0.03
  3   0.9367      0.00    -0.02       0.00    -0.06
  4   0.9367      0.00    -0.02       0.00     0.04
  5   0.9367      0.00    -0.07       0.00     0.15
  6   0.9368      0.00    -0.03       0.00    -0.03
  7   0.9558      0.00    -0.07       0.00    -0.12
  8   0.9558      0.00     0.17       0.00     0.02
  9   0.9558      0.00    -0.02       0.00    -0.17
 10   0.9967      0.00     0.06       0.00    -0.09
 11   1.2454      0.00    -0.30       0.00     0.50
 12   1.2454      0.00     0.16       0.00     0.11
 13   1.2454      0.00    -0.14       0.00    -0.27
 14   1.9443      0.00     0.03       0.00    -0.11
 15   2.0098      0.00     0.11       0.00    -0.06
 16   2.0098      0.00    -0.24       0.00     0.38
 17   2.0098      0.00     0.39       0.00     0.04
 18   2.8179      0.00     0.20       0.00    -0.19
 19   2.9053      0.00    -0.03       0.00     0.06
 20   2.9053      0.00     0.04       0.00     0.07
 21   2.9054      0.00    -0.01       0.00     0.05
 22   2.9054      0.00    -0.01       0.00     0.04
 23   3.0309      0.00     0.25       0.00    -0.17
 24   3.0309      0.00     0.06       0.00    -0.02
 25   3.0309      0.00     0.19       0.00    -0.03
 26   3.0310      0.00     0.13       0.00     0.19
 27   3.9347      0.00     0.00       0.00     0.06
 28   3.9347      0.00    -0.00       0.00    -0.08
 29   3.9348      0.00    -0.06       0.00    -0.20
 30   3.9348      0.00     0.08       0.00    -0.01
 31   3.9428      0.00    -0.09       0.00    -0.03
 32   3.9429      0.00    -0.03       0.00     0.06
 33   3.9429      0.00     0.12       0.00     0.02
 34   3.9429      0.00     0.06       0.00    -0.14
 35   3.9511      0.00     0.24       0.00    -0.05
 36   3.9511      0.00    -0.20       0.00    -0.10
 37   3.9511      0.00    -0.07       0.00    -0.00
 38   3.9511      0.00    -0.12       0.00     0.22
 39   3.9539      0.00    -0.20       0.00    -0.10
 40   3.9539      0.00     0.05       0.00    -0.06
 41   3.9540      0.00     0.03       0.00    -0.01
 42   3.9540      0.00     0.05       0.00     0.00
 43   3.9920      0.00    -0.13       0.00     0.07
 44   3.9920      0.00    -0.29       0.00    -0.12
 45   3.9921      0.00    -0.11       0.00    -0.03
 46   3.9921      0.00     0.04       0.00    -0.16
 47   4.0167      0.00     0.19       0.00     0.24
 48   4.0657      0.00     0.11       0.00    -0.08
 49   4.1150      0.00     0.08       0.00    -0.25
 50   4.9039      0.00    -0.22       0.00     0.12
 51   4.9040      0.00     0.11       0.00     0.09
 52   4.9040      0.00     0.06       0.00     0.09
 53   4.9968      0.00     0.01       0.00    -0.08
 54   5.0514      0.00    -0.02       0.00    -0.06
 55   5.0514      0.00     0.04       0.00     0.04
 56   5.0514      0.00     0.03       0.00     0.05
 57   5.0515      0.00     0.11       0.00     0.00
 58   5.0571      0.00    -0.02       0.00    -0.10
 59   5.0571      0.00     0.16       0.00    -0.13
 60   5.0572      0.00     0.16       0.00    -0.09
 61   5.1225      0.00     0.07       0.00    -0.11
 62   5.1251      0.00    -0.14       0.00     0.22
 63   5.1251      0.00     0.00       0.00    -0.03
 64   5.1252      0.00    -0.05       0.00    -0.02
 65   5.1252      0.00    -0.13       0.00     0.03
 66   5.1388      0.00     0.00       0.00     0.18
 67   5.1389      0.00    -0.06       0.00     0.03
 68   5.1389      0.00    -0.31       0.00    -0.12
 69   5.1389      0.00     0.14       0.00     0.13
 70   5.8870      0.00    -0.03       0.00    -0.04
 71   5.9605      0.00    -0.23       0.00    -0.06
 72   5.9606      0.00     0.12       0.00    -0.16
 73   5.9606      0.00    -0.07       0.00    -0.16
 74   6.0234      0.00    -0.11       0.00    -0.17
 75   6.0588      0.00    -0.01       0.00     0.04
 76   6.1929      0.00     0.27       0.00     0.33
 77   6.8809      0.00    -0.02       0.00     0.02
 78   6.8809      0.00     0.07       0.00     0.09
 79   6.8809      0.00    -0.00       0.00    -0.06
 80   6.8810      0.00     0.02       0.00    -0.03
 81   6.8890      0.00     0.33       0.00     0.02
 82   6.9327      0.00    -0.13       0.00    -0.04
 83   7.0747      0.00    -0.02       0.00    -0.10
 84   7.0747      0.00     0.01       0.00     0.08
 85   7.0748      0.00     0.01       0.00    -0.05
 86   7.0748      0.00    -0.16       0.00    -0.03
 87   7.0939      0.00     0.03       0.00     0.34
 88   7.0939      0.00     0.02       0.00     0.09
 89   7.0939      0.00     0.21       0.00     0.00
 90   7.0940      0.00     0.03       0.00     0.12
 91   7.1458      0.00     0.03       0.00    -0.09
 92   7.1484      0.00     0.09       0.00    -0.10
 93   7.1814      0.00    -0.35       0.00     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.

13NL24    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        39.483    39.483    39.483
ecceobj         0.377     0.377     0.377
incobj          4.681     4.681     4.681
qmin           24.066    24.445    24.260
qmax           57.242    61.981    57.536
amean          39.724    42.036    40.145
amin           38.797    39.483    38.822
amax           41.044    43.814    41.479
emean           0.384     0.403     0.384
emin            0.371     0.377     0.367
emax            0.401     0.419     0.396
imean           4.479     4.150     5.021
imin            3.349     3.365     4.070
imax            5.524     5.602     7.589
excite_mean     0.392     0.410     0.395
fracstop        0.019     0.017     0.024
cjmean          2.872     2.872     2.873

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       164.4     160.5     143.3
kozaiamp        177.6     178.6     178.1