Orbit Fit and Astrometric record for 14LU28

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: 14LU28    
# Created Mon Mar 25 01:09:49 2019
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   90 observations of   90
# Arc:   7.18y
# First observation: 2010/06/04
#  Last observation: 2017/08/08
# Chi-squared of fit:    60.29 DOF:  174 RMS:  0.14
# Min/Max residuals:    -0.49    0.43
# Exact a, adot, b, bdot, g, gdot:
  1.952016E-05  3.236484E-02 -7.514589E-06 -1.399979E-02  2.881762E-02  1.632227E-03
# Covariance matrix:
  2.1824E-13 -9.7039E-14 -4.5907E-14  3.2442E-14 -3.4259E-14 -3.1366E-13
 -9.7039E-14  6.0118E-14  3.4623E-14 -2.4349E-14  2.8405E-14  2.3563E-13
 -4.5907E-14  3.4623E-14  1.4439E-13 -4.0503E-14  1.9863E-14  1.5029E-13
  3.2442E-14 -2.4349E-14 -4.0503E-14  1.6876E-14 -1.1660E-14 -1.0599E-13
 -3.4259E-14  2.8405E-14  1.9863E-14 -1.1660E-14  6.6120E-14  1.1698E-13
 -3.1366E-13  2.3563E-13  1.5029E-13 -1.0599E-13  1.1698E-13  1.0251E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   23.425532 -117.614587   -0.191118    0.395727   -0.913506  2455351.877486
# Heliocentric elements and errors
Epoch:              2455352.5000  =  2010/06/05
Mean Anomaly:            5.28829 +/-     0.003
Argument of Peri:      121.62820 +/-     0.006
Long of Asc Node:      104.45512 +/-     0.000
Inclination:            32.26027 +/-     0.000
Eccentricity:         0.35541998 +/-    0.0000
Semi-Major Axis:     54.94760038 +/-    0.0032
Time of Perihelion: 2453167.0834 +/-       1.1
Perihelion:          35.41812543 +/-    0.0027
Aphelion:            74.47707534 +/-    0.0047
Period (y)              407.3158 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -15.04638188 +/-    0.0001
Ecliptic Y          -29.18686684 +/-    0.0003
Ecliptic Z           13.79542215 +/-    0.0001
Ecliptic XDOT         0.00241505 +/-    0.0000
Ecliptic YDOT        -0.00201385 +/-    0.0000
Ecliptic ZDOT        -0.00115883 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.61710122 +/-    0.0002
Geocenter to KBO     34.70099801 +/-    0.0003
# Hcoef:  6.85

The following table shows the complete astrometric record for 14LU28. 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 (14LU28) followed by the observatory code and reference code for the source of the astrometry.

2010 06  04.37672  16 19 13.495  +02 22 08.93  22.3G 14LU28    F51  C~2rY6      
2010 06  04.38850  16 19 13.448  +02 22 08.80  22.7G 14LU28    F51  C~2rY6      
2010 06  07.31811  16 18 57.456  +02 22 05.49  22.4G 14LU28    F51  C~2rY6      
2010 06  11.35948  16 18 35.685  +02 21 50.56  22.4G 14LU28    F51  C~2rY6      
2011 04  28.60508  16 29 08.939  +01 07 09.79  22.6G 14LU28    F51  C~2rY6      
2011 07  26.27178  16 22 06.949  +00 59 30.92  22.6G 14LU28    F51  C~2rY6      
2011 09  11.23695  16 21 59.042  +00 25 24.45  22.1G 14LU28    F51  C~2rY6      
2012 05  16.47199  16 34 13.849  +00 05 05.80  22.0G 14LU28    F51  C~2rY6      
2012 05  16.48615  16 34 13.760  +00 05 05.73  22.8G 14LU28    F51  C~2rY6      
2012 05  16.50030  16 34 13.711  +00 05 06.13  22.2G 14LU28    F51  C~2rY6      
2012 06  09.31945  16 32 03.105  +00 06 56.31  22.8G 14LU28    F51  C~2rY6      
2012 06  09.33007  16 32 03.062  +00 06 56.20  22.3G 14LU28    F51  C~2rY6      
2012 06  09.51304  16 32 02.030  +00 06 55.48  21.2G 14LU28    F51  C~2rY6      
2012 06  09.52433  16 32 02.023  +00 06 55.45  21.6G 14LU28    F51  C~2rY6      
2012 06  15.38892  16 31 30.464  +00 06 25.98  22.2w 14LU28    F51  C~1vXZ      
2012 06  15.40254  16 31 30.403  +00 06 25.83  22.4w 14LU28    F51  C~1vXZ      
2012 06  15.41614  16 31 30.324  +00 06 25.71  22.0w 14LU28    F51  C~1vXZ      
2012 06  15.42986  16 31 30.253  +00 06 25.66  22.4w 14LU28    F51  C~1vXZ      
2013 06  18.37480  16 37 52.272  -01 00 59.15  22.0G 14LU28    F51  C~2rY6      
2013 08  24.27361  16 34 31.012  -01 31 43.37  22.5G 14LU28    F51  C~2rY6      
2014 05  07.46358  16 48 12.198  -02 10 48.86  22.2G 14LU28    F51  C~2rY6      
2014 05  07.47580  16 48 12.133  -02 10 48.42  21.8G 14LU28    F51  C~2rY6      
2014 05  07.48805  16 48 12.079  -02 10 48.41  21.9G 14LU28    F51  C~2rY6      
2014 05  23.47016  16 46 49.871  -02 07 42.75  22.2G 14LU28    F51  C~2rY6      
2014 05  23.48179  16 46 49.810  -02 07 42.63  22.2G 14LU28    F51  C~2rY6      
2014 05  23.49341  16 46 49.739  -02 07 42.69  22.1G 14LU28    F51  C~2rY6      
2014 05  23.50503  16 46 49.678  -02 07 42.66  22.3G 14LU28    F51  C~2rY6      
2014 06  02.36411  16 45 55.615  -02 06 54.91  22.2w 14LU28    F51  C~1vXZ      
2014 06  02.37534  16 45 55.538  -02 06 55.05  22.2w 14LU28    F51  C~1vXZ      
2014 06  02.38659  16 45 55.479  -02 06 54.84  22.1w 14LU28    F51  C~1vXZ      
2014 06  02.39787  16 45 55.409  -02 06 54.98  22.6w 14LU28    F51  C~1vXZ      
2014 06  16.43124  16 44 38.533  -02 07 24.77  22.0G 14LU28    F51  C~2rY6      
2014 06  30.37613  16 43 26.977  -02 09 53.28  22.3w 14LU28    F51  C~1vXZ      
2014 06  30.38750  16 43 26.928  -02 09 53.14  22.4w 14LU28    F51  C~1vXZ      
2014 06  30.39890  16 43 26.860  -02 09 53.64  22.4w 14LU28    F51  C~1vXZ      
2014 06  30.41025  16 43 26.805  -02 09 53.87  22.3w 14LU28    F51  C~1vXZ      
2014 07  27.36510  16 41 40.230  -02 20 03.77  23.6G 14LU28    F51  C~2rY6      
2014 07  29.31731  16 41 34.737  -02 21 03.17  22.0G 14LU28    F51  C~2rY6      
2014 07  29.32939  16 41 34.703  -02 21 03.51  22.1G 14LU28    F51  C~2rY6      
2014 07  29.34148  16 41 34.644  -02 21 04.22  22.5G 14LU28    F51  C~2rY6      
2014 07  29.35354  16 41 34.630  -02 21 04.35  22.3G 14LU28    F51  C~2rY6      
2014 07  30.34085  16 41 32.006  -02 21 34.86  22.8w 14LU28    F51  C~1vXZ      
2014 07  30.35281  16 41 31.968  -02 21 35.36  22.5w 14LU28    F51  C~1vXZ      
2014 07  30.36474  16 41 31.929  -02 21 35.78  22.2w 14LU28    F51  C~1vXZ      
2014 07  30.37671  16 41 31.900  -02 21 36.03  22.2w 14LU28    F51  C~1vXZ      
2014 08  18.26047  16 40 59.733  -02 32 43.91  22.6G 14LU28    F51  C~2rY6      
2014 08  18.27256  16 40 59.736  -02 32 44.38  22.0G 14LU28    F51  C~2rY6      
2014 08  18.28467  16 40 59.735  -02 32 44.80  22.3G 14LU28    F51  C~2rY6      
2014 08  18.29672  16 40 59.711  -02 32 45.25  22.5G 14LU28    F51  C~2rY6      
2015 03  28.59201  16 56 52.148  -03 30 24.34  22.5G 14LU28    F51  C~2rY6      
2015 03  28.60307  16 56 52.130  -03 30 24.25  22.1G 14LU28    F51  C~2rY6      
2015 03  28.61411  16 56 52.115  -03 30 24.17  22.2G 14LU28    F51  C~2rY6      
2015 03  28.62509  16 56 52.093  -03 30 23.78  22.9G 14LU28    F51  C~2rY6      
2015 03  29.59544  16 56 50.784  -03 30 00.60  23.1G 14LU28    F51  C~2rY6      
2015 03  29.60642  16 56 50.752  -03 30 00.48  22.7G 14LU28    F51  C~2rY6      
2015 03  29.61746  16 56 50.755  -03 30 00.60  22.5G 14LU28    F51  C~2rY6      
2015 03  29.62847  16 56 50.715  -03 30 00.70  23.2G 14LU28    F51  C~2rY6      
2015 05  18.53011  16 53 50.508  -03 14 40.35  22.3w 14LU28    F51  C~1vXZ      
2015 05  18.54071  16 53 50.461  -03 14 40.52  21.9w 14LU28    F51  C~1vXZ      
2015 05  18.55129  16 53 50.396  -03 14 40.21  22.5w 14LU28    F51  C~1vXZ      
2015 05  18.56184  16 53 50.338  -03 14 39.98  22.2w 14LU28    F51  C~1vXZ      
2015 05  19.46684  16 53 45.596  -03 14 31.53  23.1G 14LU28    F51  C~2rY6      
2015 06  07.46009  16 52 02.308  -03 13 08.25  22.3G 14LU28    F51  C~2rY6      
2015 06  10.45384  16 51 45.818  -03 13 13.01  22.9G 14LU28    F51  C~2rY6      
2015 07  06.29818  16 49 32.548  -03 17 28.03  22.9G 14LU28    F51  C~2rY6      
2015 07  06.30858  16 49 32.482  -03 17 28.23  22.1G 14LU28    F51  C~2rY6      
2015 07  06.31900  16 49 32.426  -03 17 28.26  21.8G 14LU28    F51  C~2rY6      
2015 07  06.32941  16 49 32.388  -03 17 28.51  22.0G 14LU28    F51  C~2rY6      
2015 07  07.28886  16 49 28.001  -03 17 45.36  22.6w 14LU28    F51  C~1vXZ      
2015 07  07.29957  16 49 27.975  -03 17 45.58  22.6w 14LU28    F51  C~1vXZ      
2015 07  07.31026  16 49 27.905  -03 17 45.89  22.5w 14LU28    F51  C~1vXZ      
2015 07  31.29856  16 47 59.293  -03 27 25.97  22.8G 14LU28    F51  C~2rY6      
2016 03  09.64363  17 03 20.188  -04 41 22.47  22.2G 14LU28    F51  C~2rY6      
2016 03  18.63285  17 03 23.496  -04 38 12.46  22.3G 14LU28    F51  C~2rY6      
2016 06  05.36889  16 58 41.946  -04 18 48.27  19.7G 14LU28    F51  C~2rY6      
2016 06  05.37953  16 58 41.880  -04 18 48.18  22.3G 14LU28    F51  C~2rY6      
2016 06  05.39016  16 58 41.821  -04 18 48.37  22.3G 14LU28    F51  C~2rY6      
2016 06  05.40075  16 58 41.760  -04 18 48.37  22.1G 14LU28    F51  C~2rY6      
2016 07  06.36175  16 55 59.708  -04 23 09.52  22.7G 14LU28    F51  C~2rY6      
2016 07  06.37343  16 55 59.641  -04 23 09.51  22.1G 14LU28    F51  C~2rY6      
2016 07  06.38510  16 55 59.603  -04 23 09.70  22.2G 14LU28    F51  C~2rY6      
2016 07  31.27562  16 54 25.347  -04 32 44.35  22.6G 14LU28    F51  C~2rY6      
2016 07  31.28761  16 54 25.317  -04 32 44.70  22.6G 14LU28    F51  C~2rY6      
2016 07  31.29956  16 54 25.286  -04 32 45.01  22.4G 14LU28    F51  C~2rY6      
2016 07  31.31150  16 54 25.239  -04 32 45.51  22.3G 14LU28    F51  C~2rY6      
2017 06  23.40407  17 03 36.016  -05 25 10.54  23.1G 14LU28    F51  C~2rY6      
2017 06  23.41494  17 03 35.962  -05 25 10.73  22.6G 14LU28    F51  C~2rY6      
2017 06  23.42583  17 03 35.906  -05 25 10.79  22.2G 14LU28    F51  C~2rY6      
2017 06  23.43671  17 03 35.836  -05 25 10.95  22.2G 14LU28    F51  C~2rY6      
2017 08  08.28197  17 00 32.515  -05 40 48.88  23.0G 14LU28    F51  C~2rY6      

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    -0.36       0.00     0.03
  2   0.0000      0.00    -0.08       0.00    -0.10
  3   0.0081      0.00    -0.01       0.00     0.02
  4   0.0191      0.00     0.32       0.00     0.05
  5   0.8986      0.00     0.07       0.00    -0.04
  6   1.1414      0.00    -0.07       0.00    -0.01
  7   1.2700      0.00     0.14       0.00    -0.04
  8   1.9496      0.00     0.02       0.00     0.13
  9   1.9496      0.00    -0.16       0.00    -0.10
 10   1.9497      0.00     0.25       0.00     0.13
 11   2.0149      0.00    -0.35       0.00     0.01
 12   2.0149      0.00    -0.12       0.00    -0.07
 13   2.0154      0.00    -0.40       0.00    -0.23
 14   2.0155      0.00     0.43       0.00    -0.23
 15   2.0315      0.00    -0.04       0.00     0.15
 16   2.0316      0.00     0.15       0.00     0.09
 17   2.0316      0.00     0.07       0.00     0.07
 18   2.0316      0.00     0.11       0.00     0.12
 19   3.0390      0.00     0.21       0.00     0.05
 20   3.2222      0.00     0.15       0.00    -0.25
 21   3.9236      0.00     0.01       0.00    -0.19
 22   3.9236      0.00    -0.07       0.00     0.06
 23   3.9236      0.00     0.02       0.00    -0.12
 24   3.9674      0.00    -0.02       0.00     0.04
 25   3.9674      0.00     0.03       0.00     0.08
 26   3.9675      0.00    -0.08       0.00    -0.07
 27   3.9675      0.00    -0.03       0.00    -0.13
 28   3.9945      0.00     0.15       0.00    -0.00
 29   3.9945      0.00    -0.06       0.00    -0.17
 30   3.9946      0.00     0.00       0.00     0.02
 31   3.9946      0.00    -0.10       0.00    -0.14
 32   4.0330      0.00     0.15       0.00     0.31
 33   4.0712      0.00     0.11       0.00     0.00
 34   4.0712      0.00     0.22       0.00     0.31
 35   4.0712      0.00     0.04       0.00    -0.02
 36   4.0713      0.00     0.06       0.00    -0.08
 37   4.1451      0.00    -0.02       0.00     0.13
 38   4.1504      0.00    -0.03       0.00     0.01
 39   4.1505      0.00    -0.02       0.00     0.05
 40   4.1505      0.00    -0.40       0.00    -0.29
 41   4.1505      0.00    -0.10       0.00    -0.05
 42   4.1532      0.00     0.18       0.00     0.14
 43   4.1533      0.00     0.10       0.00     0.01
 44   4.1533      0.00    -0.00       0.00    -0.04
 45   4.1533      0.00     0.05       0.00     0.09
 46   4.2050      0.00    -0.15       0.00     0.03
 47   4.2051      0.00     0.04       0.00     0.03
 48   4.2051      0.00     0.18       0.00     0.08
 49   4.2051      0.00    -0.03       0.00     0.10
 50   4.8137      0.00     0.03       0.00     0.21
 51   4.8138      0.00    -0.00       0.00     0.04
 52   4.8138      0.00     0.00       0.00    -0.14
 53   4.8138      0.00    -0.09       0.00    -0.01
 54   4.8165      0.00     0.13       0.00     0.38
 55   4.8165      0.00    -0.10       0.00     0.25
 56   4.8165      0.00     0.19       0.00    -0.13
 57   4.8166      0.00    -0.16       0.00    -0.49
 58   4.9532      0.00    -0.10       0.00     0.05
 59   4.9532      0.00     0.04       0.00    -0.22
 60   4.9533      0.00    -0.09       0.00    -0.01
 61   4.9533      0.00    -0.12       0.00     0.11
 62   4.9558      0.00    -0.44       0.00    -0.01
 63   5.0078      0.00    -0.07       0.00     0.04
 64   5.0160      0.00     0.12       0.00    -0.02
 65   5.0867      0.00     0.13       0.00     0.00
 66   5.0867      0.00    -0.13       0.00    -0.02
 67   5.0868      0.00    -0.24       0.00     0.13
 68   5.0868      0.00    -0.07       0.00     0.06
 69   5.0894      0.00    -0.05       0.00     0.05
 70   5.0895      0.00     0.31       0.00     0.02
 71   5.0895      0.00     0.00       0.00    -0.10
 72   5.1552      0.00     0.08       0.00     0.02
 73   5.7639      0.00     0.29       0.00    -0.18
 74   5.7885      0.00     0.13       0.00     0.06
 75   6.0041      0.00     0.10       0.00     0.08
 76   6.0041      0.00     0.01       0.00     0.17
 77   6.0041      0.00     0.02       0.00    -0.02
 78   6.0042      0.00    -0.00       0.00    -0.02
 79   6.0889      0.00     0.08       0.00    -0.16
 80   6.0890      0.00    -0.10       0.00     0.04
 81   6.0890      0.00     0.16       0.00     0.05
 82   6.1571      0.00    -0.10       0.00     0.02
 83   6.1572      0.00    -0.03       0.00     0.02
 84   6.1572      0.00     0.02       0.00     0.06
 85   6.1572      0.00    -0.17       0.00    -0.10
 86   7.0528      0.00    -0.11       0.00     0.09
 87   7.0528      0.00    -0.04       0.00     0.00
 88   7.0528      0.00    -0.00       0.00     0.05
 89   7.0529      0.00    -0.17       0.00    -0.01
 90   7.1784      0.00     0.19       0.00    -0.22

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.

14LU28    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        54.483    54.483    54.483
ecceobj         0.350     0.350     0.350
incobj         32.293    32.293    32.293
qmin           34.564    34.542    34.605
qmax           76.573    76.606    76.603
amean          55.108    55.105    55.108
amin           54.483    54.483    54.483
amax           55.885    55.882    55.886
emean           0.350     0.350     0.350
emin            0.328     0.328     0.328
emax            0.372     0.372     0.371
imean          30.920    30.919    30.930
imin           30.333    30.327    30.339
imax           31.727    31.725    31.728
excite_mean     0.622     0.622     0.622
fracstop        1.000     1.000     1.000
cjmean          2.721     2.721     2.721

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       196.2     196.6     196.2
kozaiamp        179.9     179.9     179.9