Orbit Fit and Astrometric record for 14LP28

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: 14LP28    
# Created Fri Feb 22 02:09:51 2019
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   64 observations of   64
# Arc:   7.23y
# First observation: 2010/08/01
#  Last observation: 2017/10/23
# Chi-squared of fit:    46.86 DOF:  122 RMS:  0.15
# Min/Max residuals:    -0.57    0.58
# Exact a, adot, b, bdot, g, gdot:
  1.631096E-05  2.632057E-02 -2.842684E-06 -5.735879E-03  2.620434E-02  1.690051E-04
# Covariance matrix:
  4.5006E-13 -1.9949E-13 -6.8091E-14  3.7898E-14 -9.5663E-14 -7.5284E-13
 -1.9949E-13  1.0547E-13  3.9809E-14 -2.2110E-14  5.9527E-14  4.3970E-13
 -6.8091E-14  3.9809E-14  1.7762E-13 -4.0066E-14  2.3909E-14  1.7780E-13
  3.7898E-14 -2.2110E-14 -4.0066E-14  1.1986E-14 -1.2500E-14 -9.8873E-14
 -9.5663E-14  5.9527E-14  2.3909E-14 -1.2500E-14  9.6875E-14  2.5655E-13
 -7.5284E-13  4.3970E-13  1.7780E-13 -9.8873E-14  2.5655E-13  1.9650E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   10.766835  -42.280243    0.155530    0.186581   -0.981437  2455409.999576
# Heliocentric elements and errors
Epoch:              2455410.5000  =  2010/08/02
Mean Anomaly:            2.34915 +/-     0.054
Argument of Peri:      136.19788 +/-     0.060
Long of Asc Node:      177.56058 +/-     0.000
Inclination:            16.05097 +/-     0.000
Eccentricity:         0.05180458 +/-    0.0000
Semi-Major Axis:     41.28467679 +/-    0.0017
Time of Perihelion: 2454778.2495 +/-      14.4
Perihelion:          39.14594125 +/-    0.0020
Aphelion:            43.42341233 +/-    0.0022
Period (y)              265.2721 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           28.37642594 +/-    0.0003
Ecliptic Y          -26.00993560 +/-    0.0003
Ecliptic Z            7.12900294 +/-    0.0001
Ecliptic XDOT         0.00194672 +/-    0.0000
Ecliptic YDOT         0.00195386 +/-    0.0000
Ecliptic ZDOT        -0.00058547 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.14793575 +/-    0.0003
Geocenter to KBO     38.16165266 +/-    0.0005
# Hcoef:  6.30

The following table shows the complete astrometric record for 14LP28. 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 (14LP28) followed by the observatory code and reference code for the source of the astrometry.

2010 08  01.49881  21 07 30.724  -05 14 59.49  21.8G 14LP28    F51  C~2r7T      
2011 07  25.44894  21 14 16.303  -05 04 14.01  21.5G 14LP28    F51  C~2r7T      
2011 07  25.49462  21 14 16.089  -05 04 14.84  22.1G 14LP28    F51  C~2r7T      
2011 08  21.38796  21 12 07.222  -05 15 27.84  22.0G 14LP28    F51  C~2r7T      
2011 08  21.40011  21 12 07.164  -05 15 28.35  21.6G 14LP28    F51  C~2r7T      
2012 08  23.38059  21 18 04.726  -05 08 33.04  22.0G 14LP28    F51  C~2r7T      
2012 08  26.44202  21 17 50.532  -05 10 03.59  21.8G 14LP28    F51  C~2r7T      
2012 10  31.24137  21 15 00.841  -05 39 58.89  22.1G 14LP28    F51  C~2r7T      
2013 07  02.58639  21 28 06.653  -04 41 35.40  21.7G 14LP28    F51  C~2r7T      
2013 07  16.52455  21 27 12.549  -04 44 46.28  22.0w 14LP28    F51  C~1vXY      
2013 07  16.54157  21 27 12.477  -04 44 46.57  22.1w 14LP28    F51  C~1vXY      
2013 07  16.55569  21 27 12.413  -04 44 46.78  22.0w 14LP28    F51  C~1vXY      
2013 07  16.57187  21 27 12.345  -04 44 47.00  21.9w 14LP28    F51  C~1vXY      
2013 08  16.40785  21 24 48.827  -04 56 39.90  22.1G 14LP28    F51  C~2r7T      
2013 08  16.41896  21 24 48.764  -04 56 40.02  21.9G 14LP28    F51  C~2r7T      
2013 08  16.42944  21 24 48.723  -04 56 40.30  21.9G 14LP28    F51  C~2r7T      
2013 08  16.43953  21 24 48.671  -04 56 40.66  22.3G 14LP28    F51  C~2r7T      
2014 06  03.55872  21 35 19.407  -04 31 48.22  22.1w 14LP28    F51  C~1vXY      
2014 06  03.57126  21 35 19.395  -04 31 48.14  22.0w 14LP28    F51  C~1vXY      
2014 06  03.58381  21 35 19.375  -04 31 48.16  22.4w 14LP28    F51  C~1vXY      
2014 07  01.56125  21 34 17.410  -04 32 42.70  22.8G 14LP28    F51  C~2r7T      
2014 07  01.57338  21 34 17.364  -04 32 42.80  22.3G 14LP28    F51  C~2r7T      
2014 07  01.58549  21 34 17.322  -04 32 43.01  22.5G 14LP28    F51  C~2r7T      
2014 07  01.59763  21 34 17.292  -04 32 43.11  22.8G 14LP28    F51  C~2r7T      
2014 07  01.60398  21 34 17.235  -04 32 43.08  22.1G 14LP28    F51  C~2r7T      
2014 08  20.37536  21 30 40.277  -04 49 48.68  21.9w 14LP28    F51  C~1vXY      
2014 08  20.38811  21 30 40.217  -04 49 48.89  22.0w 14LP28    F51  C~1vXY      
2014 08  20.40089  21 30 40.156  -04 49 49.31  22.1w 14LP28    F51  C~1vXY      
2014 08  20.41367  21 30 40.086  -04 49 49.54  22.1w 14LP28    F51  C~1vXY      
2014 08  21.35194  21 30 35.631  -04 50 17.13  22.1w 14LP28    F51  C~1vXY      
2014 08  21.36480  21 30 35.544  -04 50 17.56  21.9w 14LP28    F51  C~1vXY      
2014 08  21.37767  21 30 35.487  -04 50 17.72  21.9w 14LP28    F51  C~1vXY      
2014 08  21.39057  21 30 35.442  -04 50 18.07  22.1w 14LP28    F51  C~1vXY      
2014 09  15.32582  21 28 45.579  -05 03 01.74  21.2G 14LP28    F51  C~2r7T      
2014 09  15.33727  21 28 45.505  -05 03 02.55  22.1G 14LP28    F51  C~2r7T      
2014 09  15.34872  21 28 45.469  -05 03 02.94  21.8G 14LP28    F51  C~2r7T      
2014 11  19.20849  21 27 21.555  -05 27 59.81  22.3G 14LP28    F51  C~2r7T      
2014 11  19.22042  21 27 21.555  -05 27 59.92  23.0G 14LP28    F51  C~2r7T      
2014 11  19.23234  21 27 21.594  -05 27 59.99  22.4G 14LP28    F51  C~2r7T      
2015 07  28.44666  21 38 38.647  -04 30 58.68  21.2i 14LP28    F51  C~1vXZ      
2015 07  28.45910  21 38 38.578  -04 30 59.25  21.6i 14LP28    F51  C~1vXZ      
2015 07  28.47184  21 38 38.514  -04 30 59.14  21.6i 14LP28    F51  C~1vXZ      
2015 11  01.24212  21 33 07.971  -05 15 07.36  22.2G 14LP28    F51  C~2r7T      
2015 11  01.25421  21 33 07.978  -05 15 07.85  22.5G 14LP28    F51  C~2r7T      
2015 11  01.26632  21 33 07.962  -05 15 07.91  22.1G 14LP28    F51  C~2r7T      
2015 11  01.27839  21 33 07.955  -05 15 08.42  21.4G 14LP28    F51  C~2r7T      
2016 05  12.59670  21 47 16.884  -04 18 16.29  22.0G 14LP28    F51  C~2r7T      
2016 06  16.57928  21 47 04.809  -04 13 32.96  22.3G 14LP28    F51  C~2r7T      
2016 07  07.52500  21 46 07.508  -04 16 02.16  22.2G 14LP28    F51  C~2r7T      
2016 07  28.49318  21 44 43.005  -04 22 14.35  22.2G 14LP28    F51  C~2r7T      
2016 09  26.32334  21 40 18.530  -04 51 22.89  21.9G 14LP28    F51  C~2r7T      
2017 06  25.54554  21 52 49.275  -04 04 54.17  22.6G 14LP28    F51  C~2r7T      
2017 06  25.55757  21 52 49.240  -04 04 54.35  22.2G 14LP28    F51  C~2r7T      
2017 06  25.56962  21 52 49.215  -04 04 54.39  22.4G 14LP28    F51  C~2r7T      
2017 06  25.58165  21 52 49.181  -04 04 54.60  22.8G 14LP28    F51  C~2r7T      
2017 07  27.45816  21 50 56.374  -04 12 32.43  21.9G 14LP28    F51  C~2r7T      
2017 07  27.47051  21 50 56.314  -04 12 32.49  22.2G 14LP28    F51  C~2r7T      
2017 07  27.48291  21 50 56.258  -04 12 32.75  22.1G 14LP28    F51  C~2r7T      
2017 07  27.49527  21 50 56.193  -04 12 33.50  21.4G 14LP28    F51  C~2r7T      
2017 09  11.36412  21 47 24.409  -04 34 20.30  22.2G 14LP28    F51  C~2r7T      
2017 09  18.42412  21 46 55.452  -04 38 05.20  22.5G 14LP28    F51  C~2r7T      
2017 10  23.23860  21 45 20.286  -04 54 29.23  22.6G 14LP28    F51  C~2r7T      
2017 10  23.25059  21 45 20.275  -04 54 29.39  22.5G 14LP28    F51  C~2r7T      
2017 10  23.26271  21 45 20.274  -04 54 29.67  22.4G 14LP28    F51  C~2r7T      

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    -0.15
  2   0.9800      0.00    -0.07       0.00    -0.13
  3   0.9801      0.00    -0.02       0.00    -0.02
  4   1.0538      0.00     0.07       0.00     0.04
  5   1.0538      0.00     0.08       0.00    -0.12
  6   2.0613      0.00     0.08       0.00    -0.03
  7   2.0697      0.00     0.09       0.00    -0.28
  8   2.2498      0.00    -0.06       0.00    -0.28
  9   2.9188      0.00     0.12       0.00     0.05
 10   2.9569      0.00     0.01       0.00     0.09
 11   2.9570      0.00     0.03       0.00     0.09
 12   2.9570      0.00    -0.01       0.00     0.12
 13   2.9571      0.00     0.01       0.00     0.18
 14   3.0415      0.00     0.02       0.00    -0.11
 15   3.0415      0.00    -0.11       0.00     0.08
 16   3.0416      0.00     0.04       0.00     0.09
 17   3.0416      0.00     0.00       0.00     0.02
 18   3.8386      0.00     0.07       0.00     0.16
 19   3.8387      0.00     0.10       0.00     0.17
 20   3.8387      0.00     0.01       0.00     0.08
 21   3.9153      0.00     0.05       0.00     0.03
 22   3.9153      0.00    -0.02       0.00     0.04
 23   3.9154      0.00    -0.04       0.00    -0.05
 24   3.9154      0.00     0.12       0.00    -0.04
 25   3.9154      0.00    -0.41       0.00     0.05
 26   4.0517      0.00    -0.08       0.00    -0.10
 27   4.0517      0.00    -0.05       0.00     0.06
 28   4.0518      0.00    -0.03       0.00     0.01
 29   4.0518      0.00    -0.15       0.00     0.15
 30   4.0544      0.00     0.03       0.00    -0.12
 31   4.0544      0.00    -0.34       0.00    -0.18
 32   4.0544      0.00    -0.26       0.00     0.04
 33   4.0545      0.00    -0.00       0.00     0.07
 34   4.1227      0.00     0.46       0.00     0.58
 35   4.1228      0.00     0.04       0.00     0.12
 36   4.1228      0.00     0.18       0.00     0.09
 37   4.3004      0.00     0.18       0.00    -0.08
 38   4.3004      0.00    -0.12       0.00    -0.08
 39   4.3004      0.00     0.16       0.00    -0.03
 40   4.9882      0.00     0.07       0.00     0.11
 41   4.9883      0.00    -0.10       0.00    -0.18
 42   4.9883      0.00    -0.18       0.00     0.21
 43   5.2505      0.00     0.03       0.00     0.07
 44   5.2505      0.00     0.19       0.00    -0.19
 45   5.2506      0.00    -0.00       0.00    -0.02
 46   5.2506      0.00    -0.05       0.00    -0.30
 47   5.7799      0.00     0.05       0.00     0.32
 48   5.8756      0.00     0.13       0.00    -0.05
 49   5.9330      0.00     0.01       0.00     0.19
 50   5.9904      0.00    -0.11       0.00     0.05
 51   6.1542      0.00     0.15       0.00    -0.12
 52   6.8995      0.00     0.05       0.00     0.15
 53   6.8995      0.00    -0.01       0.00     0.04
 54   6.8996      0.00     0.08       0.00     0.07
 55   6.8996      0.00     0.03       0.00    -0.06
 56   6.9869      0.00     0.08       0.00    -0.15
 57   6.9869      0.00     0.00       0.00     0.06
 58   6.9870      0.00    -0.01       0.00     0.07
 59   6.9870      0.00    -0.16       0.00    -0.41
 60   7.1126      0.00    -0.15       0.00    -0.10
 61   7.1319      0.00     0.04       0.00    -0.57
 62   7.2272      0.00    -0.11       0.00     0.03
 63   7.2272      0.00    -0.03       0.00     0.14
 64   7.2273      0.00     0.21       0.00     0.14

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.

14LP28    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        41.081    41.081    41.081
ecceobj         0.048     0.048     0.048
incobj         16.053    16.053    16.053
qmin           38.333    38.338    38.328
qmax           44.102    44.096    44.107
amean          41.129    41.130    41.129
amin           40.798    40.803    40.796
amax           41.458    41.457    41.461
emean           0.047     0.047     0.047
emin            0.031     0.031     0.031
emax            0.064     0.064     0.064
imean          16.275    16.275    16.275
imin           15.498    15.498    15.495
imax           16.999    16.997    16.998
excite_mean     0.284     0.284     0.284
fracstop        1.000     1.000     1.000
cjmean          2.973     2.973     2.973

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       182.2     181.9     182.1
kozaiamp        180.0     180.0     180.0