Orbit Fit and Astrometric record for 14LT28

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: 14LT28    
# Created Mon Dec 18 02:38:03 2017
# Orbit generated from Bernstein formalism
# Fitting   30 observations of   31
# Arc:   3.01y
# First observation: 2011/07/28
#  Last observation: 2014/07/31
Preliminary a, adot, b, bdot, g, gdot:
   0.000056   0.024522   0.000002  -0.002911   0.024354   0.000000
# Chi-squared of fit:    17.68 DOF:   54 RMS:  0.14
# Min/Max residuals:    -0.42    0.26
# Exact a, adot, b, bdot, g, gdot:
  1.630064E-05  2.455384E-02 -1.894270E-06 -2.911360E-03  2.463946E-02  6.574632E-04
# Covariance matrix:
  4.6584E-13 -3.9868E-13 -1.4582E-14  3.1729E-14 -1.7204E-13 -3.2830E-12
 -3.9868E-13  7.3322E-13  3.6592E-14 -7.8822E-14  1.8514E-13  8.1826E-12
 -1.4582E-14  3.6592E-14  3.3911E-13 -1.3153E-13  9.5762E-15  4.4227E-13
  3.1729E-14 -7.8822E-14 -1.3153E-13  6.5394E-14 -2.2188E-14 -9.5270E-13
 -1.7204E-13  1.8514E-13  9.5762E-15 -2.2188E-14  5.3153E-13  2.2502E-12
 -3.2830E-12  8.1826E-12  4.4227E-13 -9.5270E-13  2.2502E-12  9.8900E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -7.650432  -68.729433   -0.233540   -0.131400   -0.977764  2455770.850426
# Heliocentric elements and errors
Epoch:              2455770.5000  =  2011/07/28
Mean Anomaly:           24.36941 +/-     0.263
Argument of Peri:      200.34040 +/-     0.308
Long of Asc Node:       63.88517 +/-     0.002
Inclination:            10.04911 +/-     0.000
Eccentricity:         0.06734523 +/-    0.0002
Semi-Major Axis:     44.24122871 +/-    0.0061
Time of Perihelion: 2448494.6844 +/-      78.5
Perihelion:          41.26179289 +/-    0.0123
Aphelion:            47.22066453 +/-    0.0127
Period (y)              294.2720 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           15.17211673 +/-    0.0004
Ecliptic Y          -38.31773922 +/-    0.0011
Ecliptic Z           -5.40309740 +/-    0.0002
Ecliptic XDOT         0.00255027 +/-    0.0000
Ecliptic YDOT         0.00096800 +/-    0.0000
Ecliptic ZDOT        -0.00033029 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.56483762 +/-    0.0010
Geocenter to KBO     40.58530358 +/-    0.0012
# Hcoef:  5.89

The following table shows the complete astrometric record for 14LT28. 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 (14LT28) followed by the observatory code and reference code for the source of the astrometry.

2011 07  28.34966  19 37 24.235  -29 18 33.35  22.0i 14LT28    F51  C~1w3w      
2011 07  28.37034  19 37 24.138  -29 18 33.65  22.0r 14LT28    F51  C~1w3w      
2011 07  28.37952  19 37 24.083  -29 18 33.59  22.2r 14LT28    F51  C~1w3w      
2012 08  11.35425  19 42 38.150  -29 16 13.30  21.9g 14LT28    F51  C~1w3w      
2013 06  18.50739  19 53 42.893  -28 57 25.57  22.0w 14LT28    F51  C~1w3w      
2013 06  18.52047  19 53 42.836  -28 57 25.92  21.5w 14LT28    F51  C~1w3w      
2013 06  18.53362  19 53 42.777  -28 57 26.16  21.8w 14LT28    F51  C~1w3w      
2013 06  18.54673  19 53 42.717  -28 57 26.29  21.9w 14LT28    F51  C~1w3w      
2013 07  04.43605  19 52 24.869  -29 02 14.75  21.9w 14LT28    F51  C~1w3w      
2013 07  04.44864  19 52 24.799  -29 02 14.89  22.0w 14LT28    F51  C~1w3w      
2013 07  04.47379  19 52 24.637  -29 02 15.67  22.6w 14LT28    F51  C~1w3w      
2013 07  17.46100  19 51 15.585  -29 05 44.64  21.5r 14LT28    F51  C~1w3w      
2013 07  17.47004  19 51 15.535  -29 05 44.89  21.9r 14LT28    F51  C~1w3w      
2013 07  18.46194  19 51 10.207  -29 05 59.54  21.4i 14LT28    F51  C~1w3w      
2014 06  04.55181  20 01 02.629  -28 45 18.60  22.0w 14LT28    F51  C~1vXZ      
2014 06  04.56282  20 01 02.612  -28 45 18.58  22.3w 14LT28    F51  C~1vXZ      
2014 06  04.57382  20 01 02.577  -28 45 19.09  22.4w 14LT28    F51  C~1vXZ      
2014 06  04.58480  20 01 02.521  -28 45 18.87  22.5w 14LT28    F51  C~1vXZ      
2014 07  27.42092  19 56 48.907  -29 01 01.75  21.8w 14LT28    F51  C~1vXZ      
2014 07  27.43285  19 56 48.852  -29 01 01.93  22.1w 14LT28    F51  C~1vXZ      
2014 07  27.44476  19 56 48.794  -29 01 01.83  22.0w 14LT28    F51  C~1vXZ      
2014 07  28.36652  19 56 43.896  -29 01 14.41  22.2w 14LT28    F51  C~1vXZ      
2014 07  28.37718  19 56 43.841  -29 01 14.64  21.9w 14LT28    F51  C~1vXZ      
2014 07  28.38788  19 56 43.770  -29 01 14.85  22.0w 14LT28    F51  C~1vXZ      
2014 07  28.39855  19 56 43.723  -29 01 15.02  21.8w 14LT28    F51  C~1vXZ      
2014 07  29.40701  19 56 38.366  -29 01 28.21  22.2w 14LT28    F51  C~1vXZ      
2014 07  29.41827  19 56 38.316  -29 01 28.44  22.4w 14LT28    F51  C~1vXZ      
2014 07  29.44076  19 56 38.190  -29 01 29.05  22.4w 14LT28    F51  C~1vXZ      
2014 07  31.41890  19 56 27.772  -29 01 53.94  22.0w 14LT28    F51  C~1vXZ      
2014 07  31.43015  19 56 27.705  -29 01 54.03  22.0w 14LT28    F51  C~1vXZ      
2014 07  31.44138  19 56 27.654  -29 01 53.91  22.0w 14LT28    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    -0.11       0.00     0.01
  2   0.0001     -1.30     0.05      -0.09    -0.10
  3   0.0001     -2.00     0.01       0.09     0.06
  4   1.0404   4070.73     0.13    -564.31    -0.15
  5   1.8923  12854.69     0.04   -1096.24     0.19
  6   1.8923  12853.89     0.06   -1096.43     0.07
  7   1.8924  12853.08     0.09   -1096.51     0.08
  8   1.8924  12852.28     0.12   -1096.48     0.19
  9   1.9359  11790.25     0.08   -1176.73    -0.13
 10   1.9359  11789.32     0.05   -1176.69    -0.05
 11   1.9360  11787.07    -0.39   -1177.04    -0.31
 12   1.9716  10855.54    -0.09   -1204.69     0.19
 13   1.9716  10854.85    -0.11   -1204.81     0.07
 14   1.9743  10783.30     0.04   -1205.59     0.03
 15   2.8534  18691.52    -0.24   -1584.53     0.09
 16   2.8534  18691.30     0.10   -1584.46     0.26
 17   2.8535  18690.74     0.09   -1584.86    -0.05
 18   2.8535  18690.06 (  -0.04)  -1584.48 (   0.42)
 19   2.9981  15211.92    -0.08   -1805.15     0.04
 20   2.9982  15211.17     0.04   -1805.18    -0.01
 21   2.9982  15210.44     0.18   -1804.92     0.23
 22   3.0007  15144.62     0.06   -1803.98     0.05
 23   3.0008  15143.87     0.07   -1804.06    -0.04
 24   3.0008  15142.91    -0.11   -1804.07    -0.07
 25   3.0008  15142.27     0.02   -1804.11    -0.13
 26   3.0036  15070.40    -0.12   -1802.53    -0.01
 27   3.0036  15069.71     0.00   -1802.62    -0.12
 28   3.0037  15067.96    -0.12   -1802.88    -0.42
 29   3.0091  14928.38     0.04   -1799.10    -0.10
 30   3.0091  14927.50    -0.04   -1799.01    -0.04
 31   3.0091  14926.86     0.13   -1798.75     0.19

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.

14LT28    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.090    44.108    44.071
ecceobj         0.065     0.065     0.064
incobj         10.061    10.061    10.061
qmin           40.731    40.693    40.708
qmax           47.997    48.005    47.938
amean          44.251    44.270    44.233
amin           43.898    43.927    43.891
amax           44.619    44.632    44.591
emean           0.063     0.063     0.062
emin            0.050     0.051     0.049
emax            0.076     0.077     0.075
imean           8.486     8.487     8.486
imin            7.986     7.993     7.986
imax            9.049     9.048     9.052
excite_mean     0.160     0.161     0.160
fracstop        1.000     1.000     1.000
cjmean          3.074     3.074     3.074

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       189.8     189.7     189.6
kozaiamp        180.0     180.0     180.0