Orbit Fit and Astrometric record for 14LN28

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: 14LN28    
# Created Sun Oct 22 01:38:26 2017
# Orbit generated from Bernstein formalism
# Fitting   49 observations of   49
# Arc:   3.99y
# First observation: 2013/07/08
#  Last observation: 2017/07/04
Preliminary a, adot, b, bdot, g, gdot:
  -0.010723   0.099233   0.000173  -0.002050   0.056000   0.000000
# Chi-squared of fit:     9.14 DOF:   92 RMS:  0.08
# Min/Max residuals:    -0.14    0.21
# Exact a, adot, b, bdot, g, gdot:
  2.463657E-05  8.464456E-02 -1.472639E-06 -1.833786E-03  5.303805E-02 -3.101598E-02
# Covariance matrix:
  1.6143E-13 -1.4299E-13 -1.5136E-15  2.1984E-15 -1.0307E-14 -2.6382E-13
 -1.4299E-13  1.7247E-13  2.3415E-15 -3.1340E-15  4.0481E-14  3.7268E-13
 -1.5136E-15  2.3415E-15  8.5569E-14 -3.7466E-14  3.5825E-15  6.0095E-15
  2.1984E-15 -3.1340E-15 -3.7466E-14  2.3885E-14 -1.3951E-15 -7.8829E-15
 -1.0307E-14  4.0481E-14  3.5825E-15 -1.3951E-15  3.7459E-13  1.1867E-13
 -2.6382E-13  3.7268E-13  6.0095E-15 -7.8829E-15  1.1867E-13  9.3514E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    9.057071  -63.437405    0.183420    0.157814   -0.989971  2456481.936388
# Heliocentric elements and errors
Epoch:              2456480.5000  =  2013/07/07
Mean Anomaly:          343.02441 +/-     0.003
Argument of Peri:      159.40813 +/-     0.003
Long of Asc Node:      197.21816 +/-     0.001
Inclination:             8.70336 +/-     0.000
Eccentricity:         0.54940311 +/-    0.0000
Semi-Major Axis:     36.06629545 +/-    0.0037
Time of Perihelion: 2460211.0514 +/-       0.1
Perihelion:          16.25136063 +/-    0.0021
Aphelion:            55.88123027 +/-    0.0058
Period (y)              216.6010 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X            8.61083772 +/-    0.0001
Ecliptic Y          -17.62992453 +/-    0.0002
Ecliptic Z            2.96805802 +/-    0.0000
Ecliptic XDOT         0.00320156 +/-    0.0000
Ecliptic YDOT         0.00335417 +/-    0.0000
Ecliptic ZDOT        -0.00034538 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   19.84364215 +/-    0.0002
Geocenter to KBO     18.85438931 +/-    0.0002
# Hcoef:  8.26

The following table shows the complete astrometric record for 14LN28. 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 (14LN28) followed by the observatory code and reference code for the source of the astrometry.

2013 07  08.43561  19 47 19.573  -11 56 32.16  20.7w 14LN28    F51  C~1vXY      
2013 07  08.44895  19 47 19.437  -11 56 32.66  20.9w 14LN28    F51  C~1vXY      
2013 07  08.46297  19 47 19.308  -11 56 32.89  20.7w 14LN28    F51  C~1vXY      
2013 07  08.47629  19 47 19.186  -11 56 33.19  20.7w 14LN28    F51  C~1vXY      
2013 07  14.41686  19 46 24.861  -11 58 43.84  21.4g 14LN28    F51  C~1vXY      
2013 07  14.42704  19 46 24.758  -11 58 44.12  21.4g 14LN28    F51  C~1vXY      
2013 07  14.44330  19 46 24.617  -11 58 44.48  21.6g 14LN28    F51  C~1vXY      
2014 06  02.55122  20 11 44.860  -11 00 15.09  21.3w 14LN28    F51  C~1vXY      
2014 06  02.56421  20 11 44.797  -11 00 14.99  21.1w 14LN28    F51  C~1vXY      
2014 06  02.57729  20 11 44.734  -11 00 14.98  21.2w 14LN28    F51  C~1vXY      
2014 06  02.59024  20 11 44.669  -11 00 14.81  21.2w 14LN28    F51  C~1vXY      
2014 06  22.48078  20 09 40.769  -11 01 11.23  21.1w 14LN28    F51  C~1vXY      
2014 06  22.49368  20 09 40.676  -11 01 11.29  20.9w 14LN28    F51  C~1vXY      
2014 06  22.50659  20 09 40.567  -11 01 11.32  21.0w 14LN28    F51  C~1vXY      
2014 06  22.51947  20 09 40.476  -11 01 11.50  21.1w 14LN28    F51  C~1vXY      
2014 07  26.40866  20 04 42.388  -11 13 52.77  20.9w 14LN28    F51  C~1vXY      
2014 07  26.42098  20 04 42.268  -11 13 53.21  21.0w 14LN28    F51  C~1vXY      
2014 07  26.43329  20 04 42.150  -11 13 53.61  21.0w 14LN28    F51  C~1vXY      
2014 07  26.44557  20 04 42.043  -11 13 54.03  21.0w 14LN28    F51  C~1vXY      
2014 07  28.40148  20 04 23.848  -11 14 58.15  21.0w 14LN28    F51  C~1vXY      
2014 07  28.41212  20 04 23.753  -11 14 58.43  20.9w 14LN28    F51  C~1vXY      
2014 07  28.42274  20 04 23.651  -11 14 58.78  20.9w 14LN28    F51  C~1vXY      
2014 07  28.43338  20 04 23.551  -11 14 59.14  20.9w 14LN28    F51  C~1vXY      
2014 08  03.42889  20 03 28.463  -11 18 25.07  20.8w 14LN28    F51  C~1vXY      
2014 08  03.43941  20 03 28.359  -11 18 25.41  20.8w 14LN28    F51  C~1vXY      
2014 08  03.44996  20 03 28.270  -11 18 25.85  20.9w 14LN28    F51  C~1vXY      
2014 08  03.46049  20 03 28.173  -11 18 26.28  20.9w 14LN28    F51  C~1vXY      
2015 06  23.51572  20 30 41.829  -10 01 34.35  21.0w 14LN28    F51  C~1vXY      
2015 06  23.52741  20 30 41.742  -10 01 34.51  21.1w 14LN28    F51  C~1vXY      
2015 06  23.53907  20 30 41.653  -10 01 34.67  21.1w 14LN28    F51  C~1vXY      
2015 06  23.55072  20 30 41.573  -10 01 34.76  21.0w 14LN28    F51  C~1vXY      
2015 06  26.49472  20 30 20.240  -10 02 12.24  20.9w 14LN28    F51  C~1vXY      
2015 06  26.50665  20 30 20.147  -10 02 12.36  21.0w 14LN28    F51  C~1vXY      
2015 06  26.51855  20 30 20.057  -10 02 12.52  20.9w 14LN28    F51  C~1vXY      
2015 06  26.53045  20 30 19.968  -10 02 12.70  21.0w 14LN28    F51  C~1vXY      
2015 07  09.44465  20 28 35.211  -10 06 21.49  20.7i 14LN28    F51  C~1vXY      
2015 07  09.45645  20 28 35.106  -10 06 21.77  20.6i 14LN28    F51  C~1vXY      
2015 07  09.46809  20 28 35.001  -10 06 21.98  20.6i 14LN28    F51  C~1vXY      
2015 07  09.47975  20 28 34.898  -10 06 22.38  20.6i 14LN28    F51  C~1vXY      
2015 07  27.39116  20 25 50.606  -10 15 26.74  20.4i 14LN28    F51  C~1vXY      
2015 07  27.40278  20 25 50.496  -10 15 27.10  20.4i 14LN28    F51  C~1vXY      
2015 07  27.41429  20 25 50.384  -10 15 27.68  20.5i 14LN28    F51  C~1vXY      
2015 07  28.38886  20 25 41.208  -10 16 02.59  20.5r 14LN28    F51  C~1vXY      
2015 07  28.40094  20 25 41.092  -10 16 03.09  20.9r 14LN28    F51  C~1vXY      
2015 07  28.41258  20 25 40.985  -10 16 03.46  20.8r 14LN28    F51  C~1vXY      
2017 07  04.32866  21 14 54.76   -07 37 43.1   20.5R 14LN28    G37  C~2IY7      
2017 07  04.37583  21 14 54.42   -07 37 44.1         14LN28    G37  C~2IY7      
2017 07  04.41000  21 14 54.17   -07 37 44.9         14LN28    G37  C~2IY7      
2017 07  04.43042  21 14 54.04   -07 37 45.3         14LN28    G37  C~2IY7      

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     0.12       0.00     0.19
  2   0.0000     -2.05    -0.10      -0.13     0.00
  3   0.0001     -3.96    -0.08      -0.01     0.05
  4   0.0001     -5.77    -0.07       0.02     0.02
  5   0.0164   -813.43    -0.02      16.15     0.16
  6   0.0164   -814.97    -0.14      16.15     0.14
  7   0.0164   -817.07     0.04      16.17     0.13
  8   0.9011  21868.27     0.00    -832.88     0.02
  9   0.9011  21867.38     0.02    -832.59     0.05
 10   0.9011  21866.46     0.03    -832.39    -0.01
 11   0.9012  21865.55     0.03    -832.03     0.09
 12   0.9556  20048.76    -0.01    -517.31    -0.09
 13   0.9557  20047.40     0.11    -517.10    -0.03
 14   0.9557  20045.80    -0.00    -516.80     0.10
 15   0.9557  20044.44     0.12    -516.71     0.04
 16   1.0485  15560.04     0.05    -389.55     0.01
 17   1.0486  15558.22    -0.00    -389.63    -0.02
 18   1.0486  15556.42    -0.02    -389.68    -0.02
 19   1.0486  15554.79     0.12    -389.78    -0.07
 20   1.0540  15278.18    -0.06    -400.02    -0.13
 21   1.0540  15276.75     0.04    -400.02    -0.07
 22   1.0540  15275.20     0.02    -400.07    -0.07
 23   1.0541  15273.68     0.03    -400.13    -0.08
 24   1.0705  14434.33     0.05    -443.17     0.01
 25   1.0705  14432.76    -0.04    -443.20     0.06
 26   1.0705  14431.38     0.08    -443.38    -0.04
 27   1.0706  14429.89     0.07    -443.52    -0.09
 28   1.9578  39388.84     0.00    -919.35    -0.06
 29   1.9578  39387.51    -0.03    -919.23    -0.08
 30   1.9578  39386.14    -0.10    -919.09    -0.09
 31   1.9579  39384.93    -0.03    -918.92    -0.07
 32   1.9659  39057.77    -0.02    -886.39    -0.14
 33   1.9660  39056.35    -0.04    -886.21    -0.09
 34   1.9660  39054.97    -0.03    -886.07    -0.09
 35   1.9660  39053.60    -0.01    -885.96    -0.11
 36   2.0014  37435.44     0.01    -792.05    -0.05
 37   2.0014  37433.81     0.01    -791.98    -0.04
 38   2.0015  37432.20     0.01    -791.85     0.04
 39   2.0015  37430.58    -0.01    -791.92    -0.08
 40   2.0505  34868.31    -0.06    -802.33     0.00
 41   2.0506  34866.59    -0.02    -802.33     0.06
 42   2.0506  34864.81    -0.08    -802.55    -0.11
 43   2.0533  34721.06    -0.04    -807.76     0.06
 44   2.0533  34719.23    -0.06    -807.88     0.00
 45   2.0533  34717.56     0.03    -807.91     0.04
 46   3.9888  83300.56    -0.03   -1732.98     0.20
 47   3.9889  83294.58    -0.02   -1732.68     0.16
 48   3.9890  83290.16    -0.09   -1732.52     0.06
 49   3.9890  83287.86     0.21   -1732.42     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.

14LN28    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        36.107    36.115    36.099
ecceobj         0.551     0.551     0.551
incobj          8.718     8.718     8.718
qmin           15.864    15.914    15.847
qmax           57.020    57.733    57.013
amean          35.834    36.243    35.984
amin           34.429    35.655    34.758
amax           36.638    37.002    36.643
emean           0.549     0.553     0.550
emin            0.531     0.544     0.533
emax            0.558     0.561     0.559
imean           8.307     8.290     8.216
imin            7.777     7.941     7.757
imax            9.148     9.012     9.042
excite_mean     0.567     0.571     0.569
fracstop        0.010     0.012     0.012
cjmean          2.648     2.643     2.646

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       191.5     193.8     192.4
kozaiamp         31.5      31.9      31.2