Orbit Fit and Astrometric record for 14LQ28

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: 14LQ28    
# Created Wed Dec 13 02:38:02 2017
# Orbit generated from Bernstein formalism
# Fitting   62 observations of   64
# Arc:   4.86y
# First observation: 2010/09/15
#  Last observation: 2015/07/25
Preliminary a, adot, b, bdot, g, gdot:
   0.000010   0.026363  -0.000001  -0.000323   0.025881   0.000000
# Chi-squared of fit:    36.36 DOF:  118 RMS:  0.14
# Min/Max residuals:    -0.35    0.36
# Exact a, adot, b, bdot, g, gdot:
  1.554755E-05  2.638865E-02  7.747232E-07 -3.254722E-04  2.558942E-02 -1.414880E-03
# Covariance matrix:
  2.0781E-13 -1.0019E-13 -2.3030E-16  6.4406E-16 -4.8715E-14 -4.4941E-13
 -1.0019E-13  1.6406E-13  6.8441E-16 -1.8863E-15  1.1213E-13  1.2817E-12
 -2.3030E-16  6.8441E-16  1.8812E-13 -4.7772E-14  4.5153E-16  5.8283E-15
  6.4406E-16 -1.8863E-15 -4.7772E-14  1.3894E-14 -1.3087E-15 -1.6077E-14
 -4.8715E-14  1.1213E-13  4.5153E-16 -1.3087E-15  1.4974E-13  9.7063E-13
 -4.4941E-13  1.2817E-12  5.8283E-15 -1.6077E-14  9.7063E-13  1.0940E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.111410  -13.354764   -0.100309    0.019295   -0.996110  2455454.945676
# Heliocentric elements and errors
Epoch:              2455450.5000  =  2010/09/11
Mean Anomaly:          332.72013 +/-     0.050
Argument of Peri:      156.45438 +/-     0.064
Long of Asc Node:      223.58748 +/-     0.009
Inclination:             1.29509 +/-     0.000
Eccentricity:         0.10156483 +/-    0.0001
Semi-Major Axis:     43.93637685 +/-    0.0025
Time of Perihelion: 2463511.2328 +/-      14.8
Perihelion:          39.47398629 +/-    0.0044
Aphelion:            48.39876741 +/-    0.0046
Period (y)              291.2357 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           39.01162314 +/-    0.0006
Ecliptic Y           -9.15800753 +/-    0.0001
Ecliptic Z            0.75803575 +/-    0.0000
Ecliptic XDOT         0.00050597 +/-    0.0000
Ecliptic YDOT         0.00278817 +/-    0.0000
Ecliptic ZDOT        -0.00003777 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.07930214 +/-    0.0006
Geocenter to KBO     39.07865789 +/-    0.0006
# Hcoef:  5.86

The following table shows the complete astrometric record for 14LQ28. 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 (14LQ28) followed by the observatory code and reference code for the source of the astrometry.

2010 09  15.44491  23 09 07.009  -04 14 51.05  22.0w 14LQ28    F51  C~1vXZ      
2010 09  15.45487  23 09 06.948  -04 14 51.23  21.9w 14LQ28    F51  C~1vXZ      
2010 09  15.46479  23 09 06.893  -04 14 51.37  21.7w 14LQ28    F51  C~1vXZ      
2010 09  16.48425  23 09 02.237  -04 15 21.52  21.7w 14LQ28    F51  C~1vXZ      
2010 09  16.49565  23 09 02.160  -04 15 21.72  21.8w 14LQ28    F51  C~1vXZ      
2010 09  16.50712  23 09 02.112  -04 15 22.06  21.7w 14LQ28    F51  C~1vXZ      
2010 09  16.51866  23 09 02.040  -04 15 22.23  21.8w 14LQ28    F51  C~1vXZ      
2013 08  15.50003  23 28 16.727  -02 16 47.92  21.8w 14LQ28    F51  C~1vXZ      
2013 08  15.51557  23 28 16.669  -02 16 48.24  21.6w 14LQ28    F51  C~1vXZ      
2013 08  15.53116  23 28 16.610  -02 16 48.67  21.8w 14LQ28    F51  C~1vXZ      
2013 08  15.54671  23 28 16.548  -02 16 49.02  21.7w 14LQ28    F51  C~1vXZ      
2013 09  03.42946  23 26 55.670  -02 25 21.72  21.7w 14LQ28    F51  C~1vXZ      
2013 09  03.44434  23 26 55.599  -02 25 22.18  21.6w 14LQ28    F51  C~1vXZ      
2013 09  03.45927  23 26 55.533  -02 25 22.57  21.7w 14LQ28    F51  C~1vXZ      
2013 09  03.47417  23 26 55.466  -02 25 23.08  21.6w 14LQ28    F51  C~1vXZ      
2014 06  03.58784  23 35 22.184  -01 34 00.81  22.2w 14LQ28    F51  C~1vXZ      
2014 06  03.59204  23 35 22.176  -01 34 00.65  22.2w 14LQ28    F51  C~1vXZ      
2014 06  03.59625  23 35 22.220  -01 34 01.19  22.3w 14LQ28    F51  C~1vXZ      
2014 06  03.60045  23 35 22.208  -01 34 00.73  22.3w 14LQ28    F51  C~1vXZ      
2014 06  11.59000  23 35 34.752  -01 32 28.59  22.0w 14LQ28    F51  C~1vXZ      
2014 06  11.59396  23 35 34.756  -01 32 28.65  22.1w 14LQ28    F51  C~1vXZ      
2014 06  11.59791  23 35 34.751  -01 32 28.38  22.0w 14LQ28    F51  C~1vXZ      
2014 07  26.57894  23 35 00.205  -01 35 10.77  22.1w 14LQ28    F51  C~1vXZ      
2014 07  26.58831  23 35 00.186  -01 35 11.11  22.1w 14LQ28    F51  C~1vXZ      
2014 07  26.59770  23 35 00.161  -01 35 11.23  21.9w 14LQ28    F51  C~1vXZ      
2014 07  26.60707  23 35 00.137  -01 35 11.41  22.1w 14LQ28    F51  C~1vXZ      
2014 08  03.53007  23 34 37.165  -01 37 31.66  22.2w 14LQ28    F51  C~1vXZ      
2014 08  03.54140  23 34 37.129  -01 37 31.90  22.2w 14LQ28    F51  C~1vXZ      
2014 08  03.55270  23 34 37.083  -01 37 32.03  22.0w 14LQ28    F51  C~1vXZ      
2014 08  03.56402  23 34 37.032  -01 37 32.21  22.0w 14LQ28    F51  C~1vXZ      
2014 08  04.52083  23 34 33.991  -01 37 51.03  21.9w 14LQ28    F51  C~1vXZ      
2014 08  04.53220  23 34 33.934  -01 37 51.11  21.9w 14LQ28    F51  C~1vXZ      
2014 08  04.54355  23 34 33.916  -01 37 51.74  22.0w 14LQ28    F51  C~1vXZ      
2014 08  04.55488  23 34 33.883  -01 37 51.92  22.0w 14LQ28    F51  C~1vXZ      
2014 08  05.52271  23 34 30.724  -01 38 11.44  22.0w 14LQ28    F51  C~1vXZ      
2014 08  05.53412  23 34 30.687  -01 38 11.58  22.0w 14LQ28    F51  C~1vXZ      
2014 08  05.54550  23 34 30.655  -01 38 11.91  21.9w 14LQ28    F51  C~1vXZ      
2014 08  05.55685  23 34 30.614  -01 38 11.91  21.7w 14LQ28    F51  C~1vXZ      
2014 08  22.47513  23 33 27.084  -01 44 50.27  22.0w 14LQ28    F51  C~1vXZ      
2014 08  22.48738  23 33 27.040  -01 44 50.61  22.1w 14LQ28    F51  C~1vXZ      
2014 08  22.49967  23 33 26.985  -01 44 50.80  22.1w 14LQ28    F51  C~1vXZ      
2014 08  22.51194  23 33 26.923  -01 44 51.12  22.0w 14LQ28    F51  C~1vXZ      
2014 09  12.48502  23 31 53.561  -01 54 49.66  21.2i 14LQ28    F51  C~1vXZ      
2014 09  12.49652  23 31 53.519  -01 54 50.00  21.1i 14LQ28    F51  C~1vXZ      
2014 09  12.50799  23 31 53.468  -01 54 50.24  21.2i 14LQ28    F51  C~1vXZ      
2014 09  17.33689  23 31 31.101  -01 57 15.88  21.8w 14LQ28    F51  C~1vXZ      
2014 09  17.34875  23 31 31.050  -01 57 16.00  21.8w 14LQ28    F51  C~1vXZ      
2014 09  17.36061  23 31 30.990  -01 57 16.47  21.8w 14LQ28    F51  C~1vXZ      
2014 09  17.37248  23 31 30.939  -01 57 16.74  21.9w 14LQ28    F51  C~1vXZ      
2014 11  11.26744  23 28 07.229  -02 20 06.51  22.0w 14LQ28    F51  C~1vXZ      
2014 11  11.27821  23 28 07.195  -02 20 06.56  21.9w 14LQ28    F51  C~1vXZ      
2014 11  11.28900  23 28 07.200  -02 20 06.70  21.9w 14LQ28    F51  C~1vXZ      
2014 11  26.25186  23 27 46.359  -02 22 47.34  21.7w 14LQ28    F51  C~1vXZ      
2014 11  26.26390  23 27 46.357  -02 22 47.62  21.8w 14LQ28    F51  C~1vXZ      
2014 11  26.27591  23 27 46.340  -02 22 47.72  21.8w 14LQ28    F51  C~1vXZ      
2014 11  26.28790  23 27 46.333  -02 22 47.84  21.9w 14LQ28    F51  C~1vXZ      
2014 12  18.21205  23 27 53.633  -02 22 43.20  22.2w 14LQ28    F51  C~1vXZ      
2014 12  18.22414  23 27 53.650  -02 22 43.17  22.1w 14LQ28    F51  C~1vXZ      
2014 12  18.23622  23 27 53.645  -02 22 42.82  22.0w 14LQ28    F51  C~1vXZ      
2014 12  18.24826  23 27 53.672  -02 22 42.99  22.0w 14LQ28    F51  C~1vXZ      
2015 07  25.50596  23 40 39.078  -01 00 08.52  22.1w 14LQ28    F51  C~1vXZ      
2015 07  25.51848  23 40 39.080  -01 00 09.06  22.2w 14LQ28    F51  C~1vXZ      
2015 07  25.53101  23 40 39.007  -01 00 08.75  22.3w 14LQ28    F51  C~1vXZ      
2015 07  25.54360  23 40 38.978  -01 00 09.09  22.2w 14LQ28    F51  C~1vXZ      

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     0.16       0.00    -0.20
  2   0.0000     -0.91     0.00       0.19    -0.01
  3   0.0001     -1.72    -0.06       0.38     0.17
  4   0.0028    -77.61     0.19      -0.38    -0.19
  5   0.0029    -78.75    -0.09      -0.12     0.07
  6   0.0029    -79.55    -0.02      -0.15     0.03
  7   0.0029    -80.60    -0.21       0.11     0.30
  8   2.9160  18666.63     0.02    -203.04    -0.05
  9   2.9160  18665.70     0.10    -203.00    -0.02
 10   2.9160  18664.71     0.14    -203.05    -0.08
 11   2.9161  18663.71     0.16    -203.00    -0.05
 12   2.9678  17337.57    -0.04    -198.92    -0.13
 13   2.9678  17336.40    -0.08    -198.92    -0.14
 14   2.9679  17335.33    -0.01    -198.89    -0.12
 15   2.9679  17334.20    -0.02    -198.97    -0.20
 16   3.7157  25620.39     0.01    -350.38     0.36
 17   3.7157  25620.34 (  -0.17)   -350.18 (   0.55)
 18   3.7157  25620.74     0.09    -350.94    -0.22
 19   3.7157  25620.75    -0.02    -350.45     0.27
 20   3.7376  25833.18     0.09    -339.68     0.01
 21   3.7376  25833.21     0.04    -339.76    -0.08
 22   3.7376  25833.25     0.00    -339.48     0.19
 23   3.8607  25284.84    -0.16    -284.51     0.22
 24   3.8608  25284.44    -0.15    -284.72     0.00
 25   3.8608  25284.04    -0.13    -284.68     0.03
 26   3.8608  25283.63    -0.12    -284.70    -0.01
 27   3.8825  24906.28     0.04    -278.08    -0.02
 28   3.8825  24905.68     0.04    -278.08    -0.04
 29   3.8826  24904.99    -0.05    -277.93     0.10
 30   3.8826  24904.20    -0.23    -277.80     0.22
 31   3.8852  24854.16     0.02    -277.15     0.17
 32   3.8852  24853.33 (  -0.19)   -276.89 (   0.42)
 33   3.8853  24852.83    -0.08    -277.37    -0.07
 34   3.8853  24852.29     0.00    -277.34    -0.06
 35   3.8880  24800.33    -0.08    -276.64    -0.05
 36   3.8880  24799.75    -0.02    -276.55     0.03
 37   3.8880  24799.17     0.03    -276.67    -0.10
 38   3.8881  24798.60     0.09    -276.43     0.13
 39   3.9344  23751.85    -0.11    -267.95     0.08
 40   3.9344  23751.10    -0.01    -268.00     0.01
 41   3.9344  23750.26     0.01    -267.85     0.15
 42   3.9345  23749.26    -0.13    -267.78     0.21
 43   3.9919  22208.04    -0.01    -267.79     0.10
 44   3.9919  22207.32     0.16    -267.85     0.03
 45   3.9920  22206.52     0.24    -267.77     0.11
 46   4.0052  21836.78    -0.06    -269.91    -0.21
 47   4.0052  21836.02     0.11    -269.72    -0.02
 48   4.0052  21835.00     0.01    -269.80    -0.10
 49   4.0053  21834.18     0.11    -269.74    -0.05
 50   4.1556  18456.07    -0.14    -330.33    -0.16
 51   4.1556  18455.58    -0.25    -330.18     0.01
 52   4.1556  18455.60     0.15    -330.33    -0.14
 53   4.1966  18102.51     0.06    -355.58     0.07
 54   4.1966  18102.37     0.09    -355.83    -0.17
 55   4.1967  18102.10    -0.03    -355.82    -0.14
 56   4.1967  18101.95    -0.01    -355.89    -0.20
 57   4.2567  18205.20     0.07    -394.71    -0.18
 58   4.2568  18205.45     0.07    -394.78    -0.24
 59   4.2568  18205.52    -0.12    -394.43     0.13
 60   4.2568  18205.82    -0.06    -394.75    -0.17
 61   4.8571  30886.14     0.01    -353.72     0.18
 62   4.8571  30885.95     0.33    -354.23    -0.35
 63   4.8572  30885.05    -0.06    -353.51     0.36
 64   4.8572  30884.50    -0.09    -353.65     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.

14LQ28    quality flag:2

Type:      CLASSICAL  SCATNEAR  SCATNEAR

axisobj        43.869    43.876    43.862
ecceobj         0.101     0.102     0.101
incobj          1.294     1.294     1.294
qmin           38.215    37.544    37.997
qmax           49.569    50.397    49.972
amean          43.708    43.711    43.696
amin           43.305    43.294    43.300
amax           44.167    44.211    44.197
emean           0.101     0.111     0.105
emin            0.081     0.076     0.082
emax            0.124     0.140     0.131
imean           3.497     3.300     3.502
imin            2.442     2.063     2.430
imax            4.413     4.142     4.413
excite_mean     0.119     0.126     0.121
fracstop        1.000     1.000     1.000
cjmean          3.081     3.079     3.080

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       182.0     184.3     180.9
kozaiamp        180.0     179.9     180.0