Orbit Fit and Astrometric record for 14LM28

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: 14LM28    
# Created Sun Aug 19 01:38:10 2018
# Orbit generated from Bernstein formalism
# Fitting   27 observations of   30
# Arc:   3.96y
# First observation: 2014/06/02
#  Last observation: 2018/05/19
Preliminary a, adot, b, bdot, g, gdot:
  -0.000512   0.013673  -0.008034   0.143607   0.058876   0.000000
# Chi-squared of fit:    20.75 DOF:   48 RMS:  0.15
# Min/Max residuals:    -0.31    0.34
# Exact a, adot, b, bdot, g, gdot:
  2.877755E-06  1.129632E-02  3.248411E-05  1.235057E-01  6.048043E-02 -2.394164E-02
# Covariance matrix:
  9.1840E-14 -3.1851E-14  4.3507E-15 -8.3382E-15  1.2549E-14 -1.3822E-14
 -3.1851E-14  3.0570E-14 -2.0730E-14  5.7860E-14 -1.3510E-14  9.9715E-14
  4.3507E-15 -2.0730E-14  1.4648E-13 -1.9603E-13  1.0390E-14 -2.8870E-13
 -8.3382E-15  5.7860E-14 -1.9603E-13  5.3761E-13  1.9653E-14  8.9553E-13
  1.2549E-14 -1.3510E-14  1.0390E-14  1.9653E-14  1.3097E-13  4.0877E-14
 -1.3822E-14  9.9715E-14 -2.8870E-13  8.9553E-13  4.0877E-14  1.5563E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   14.758616 -112.746405   -0.078454    0.257932   -0.978888  2456810.862918
# Heliocentric elements and errors
Epoch:              2456810.5000  =  2014/06/02
Mean Anomaly:          359.71153 +/-     0.000
Argument of Peri:       38.16887 +/-     0.001
Long of Asc Node:      246.22684 +/-     0.000
Inclination:            84.83597 +/-     0.000
Eccentricity:         0.93621571 +/-    0.0000
Semi-Major Axis:    262.92509713 +/-    0.1454
Time of Perihelion: 2458058.2820 +/-       0.1
Perihelion:          16.77049041 +/-    0.0130
Aphelion:           509.07970384 +/-    0.2817
Period (y)             4263.4018 +/-      3.54
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           -6.50291475 +/-    0.0000
Ecliptic Y          -15.70723166 +/-    0.0001
Ecliptic Z            4.21264185 +/-    0.0000
Ecliptic XDOT         0.00142228 +/-    0.0000
Ecliptic YDOT         0.00207864 +/-    0.0000
Ecliptic ZDOT         0.00513048 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   17.51431923 +/-    0.0001
Geocenter to KBO     16.53427384 +/-    0.0001
# Hcoef:  9.60

The following table shows the complete astrometric record for 14LM28. 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 (14LM28) followed by the observatory code and reference code for the source of the astrometry.

2014 06  02.36214  16 31 29.465  -06 57 01.65  22.2w 14LM28    F51  C~1vXY      
2014 06  02.37335  16 31 29.310  -06 57 00.58  22.0w 14LM28    F51  C~1vXY      
2014 06  02.38461  16 31 29.154  -06 56 59.41  22.1w 14LM28    F51  C~1vXY      
2014 06  02.39588  16 31 29.007  -06 56 58.45  22.0w 14LM28    F51  C~1vXY      
2014 07  29.31071  16 21 39.969  -05 53 36.35  22.1w 14LM28    F51  C~1vXY      
2014 07  29.32280  16 21 39.905  -05 53 36.01  22.1w 14LM28    F51  C~1vXY      
2014 07  29.33487  16 21 39.825  -05 53 35.40  22.2w 14LM28    F51  C~1vXY      
2014 07  30.33424  16 21 34.045  -05 53 00.48  22.3w 14LM28    F51  C~1vXY      
2014 07  30.34621  16 21 33.978  -05 53 00.07  22.3w 14LM28    F51  C~1vXY      
2014 07  30.35815  16 21 33.911  -05 52 59.53  22.5w 14LM28    F51  C~1vXY      
2014 08  19.26483  16 20 23.653  -05 44 34.81  22.4w 14LM28    F51  C~1vXY      
2014 08  19.27684  16 20 23.637  -05 44 34.49  22.7w 14LM28    F51  C~1vXY      
2014 08  19.28886  16 20 23.615  -05 44 34.45  22.7w 14LM28    F51  C~1vXY      
2015 03  28.59268  16 49 31.545  -02 17 50.45  22.6w 14LM28    F51  C~1vXY      
2015 03  28.60375  16 49 31.488  -02 17 49.07  22.5w 14LM28    F51  C~1vXY      
2015 03  28.61477  16 49 31.430  -02 17 47.49  22.9w 14LM28    F51  C~1vXY      
2015 03  28.62575  16 49 31.386  -02 17 45.78  22.1w 14LM28    F51  C~1vXY      
2015 03  29.59610  16 49 27.156  -02 15 25.19  22.6w 14LM28    F51  C~1vXY      
2015 03  29.60709  16 49 27.087  -02 15 23.78  22.4w 14LM28    F51  C~1vXY      
2015 03  29.61813  16 49 27.048  -02 15 22.34  22.5w 14LM28    F51  C~1vXY      
2015 03  29.62913  16 49 27.019  -02 15 20.57  22.5w 14LM28    F51  C~1vXY      
2017 05  28.04071  16 54 43.72   +14 37 50.8   21.7  14LM28    104  C~2GJD      
2017 05  28.07375  16 54 43.28   +14 37 54.4         14LM28    104  C~2GJD      
2017 05  28.98087  16 54 31.04   +14 39 36.5   22.1  14LM28    104  C~2GJD      
2017 05  28.98123  16 54 31.05   +14 39 36.4   21.7  14LM28    104  C~2GJD      
2017 05  29.01791  16 54 30.50   +14 39 40.6   21.8  14LM28    104  C~2GJD      
2018 05  19.18548  17 05 04.654  +21 41 28.88  22.1R 14LM28    705              
2018 05  19.24902  17 05 03.818  +21 41 37.88        14LM28    705              
2018 05  19.25248  17 05 03.785  +21 41 38.15        14LM28    705              
2018 05  19.27520  17 05 03.468  +21 41 41.59        14LM28    705              

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     0.02       0.00    -0.04
  2   0.0000     -2.45    -0.10       0.70    -0.08
  3   0.0001     -4.92    -0.24       1.50    -0.02
  4   0.0001     -7.23    -0.21       2.10    -0.15
  5   0.1559  -9282.85    -0.04    2376.77    -0.10
  6   0.1559  -9283.85     0.12    2376.95    -0.17
  7   0.1560  -9285.13    -0.01    2377.36    -0.01
  8   0.1587  -9376.04     0.18    2398.11    -0.15
  9   0.1588  -9377.09     0.23    2398.35    -0.15
 10   0.1588  -9378.17     0.26    2398.73    -0.02
 11   0.2133 -10496.64    -0.13    2729.99     0.14
 12   0.2133 -10496.93    -0.12    2730.27     0.26
 13   0.2134 -10497.26    -0.15    2730.26     0.09
 14   0.8192  13511.14     0.15   19086.22     0.24
 15   0.8193  13510.09     0.07   19087.47    -0.00
 16   0.8193  13508.99    -0.06   19088.91    -0.03
 17   0.8193  13508.08    -0.01   19090.52     0.10
 18   0.8220  13424.16     0.05   19221.26     0.26
 19   0.8220  13422.92    -0.18   19222.51     0.04
 20   0.8221  13422.13     0.03   19223.86    -0.09
 21   0.8221  13421.43     0.34   19225.56     0.14
 22   2.9861   8888.14    -0.31   84283.85    -0.16
 23   2.9862   8880.71    -0.10   84286.73    -0.26
 24   2.9887   8673.80 (   0.38)  84369.12 (   0.71)
 25   2.9887   8673.97 (   0.64)  84369.04 (   0.59)
 26   2.9888   8664.74 (  -0.10)  84372.29 (   0.62)
 27   3.9612  14253.70    -0.14  117276.36    -0.10
 28   3.9614  14238.78     0.04  117285.14     0.14
 29   3.9614  14238.21     0.29  117285.38    -0.09
 30   3.9614  14232.55     0.04  117288.74     0.24

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.

14LM28    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj       263.093   263.498   262.689
ecceobj         0.936     0.936     0.936
incobj         84.891    84.891    84.891
qmin           15.822    15.908    15.910
qmax          616.732   554.338   564.631
amean         275.987   260.284   260.295
amin          256.530   236.323   246.828
amax          316.905   285.835   290.885
emean           0.938     0.934     0.935
emin            0.932     0.925     0.930
emax            0.946     0.941     0.941
imean          85.917    86.021    85.979
imin           83.509    83.744    83.853
imax           88.356    88.333    88.083
excite_mean     1.369     1.366     1.367
fracstop        0.132     0.338     0.090
cjmean          0.249     0.259     0.252

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        35.8      31.7      36.1
kozaiamp          2.9       7.1       2.5