Orbit Fit and Astrometric record for 13LY35

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: 13LY35    
# Created Fri Dec 15 02:37:52 2017
# Orbit generated from Bernstein formalism
# Fitting   16 observations of   16
# Arc:   3.06y
# First observation: 2010/06/07
#  Last observation: 2013/06/30
Preliminary a, adot, b, bdot, g, gdot:
  -0.000006   0.023946   0.000001   0.002111   0.024599   0.000000
# Chi-squared of fit:     5.41 DOF:   26 RMS:  0.10
# Min/Max residuals:    -0.26    0.17
# Exact a, adot, b, bdot, g, gdot:
  1.523571E-05  2.388130E-02  1.028158E-06  2.108678E-03  2.446969E-02 -1.424083E-03
# Covariance matrix:
  1.2890E-12 -1.3180E-12  5.7748E-14 -9.6374E-14 -8.3550E-13 -1.2454E-11
 -1.3180E-12  1.9572E-12 -1.0061E-13  1.6762E-13  1.3843E-12  2.1599E-11
  5.7748E-14 -1.0061E-13  6.7435E-13 -2.5675E-13 -6.1714E-14 -1.1883E-12
 -9.6374E-14  1.6762E-13 -2.5675E-13  1.2147E-13  1.0801E-13  1.9741E-12
 -8.3550E-13  1.3843E-12 -6.1714E-14  1.0801E-13  2.1109E-12  1.5009E-11
 -1.2454E-11  2.1599E-11 -1.1883E-12  1.9741E-12  1.5009E-11  2.5323E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
   -7.248198 -119.869483   -0.279775   -0.123021   -0.966777  2455354.899116
# Heliocentric elements and errors
Epoch:              2455350.5000  =  2010/06/03
Mean Anomaly:          293.02791 +/-     0.160
Argument of Peri:       18.77080 +/-     0.221
Long of Asc Node:      294.67226 +/-     0.004
Inclination:             8.71136 +/-     0.000
Eccentricity:         0.05796403 +/-    0.0007
Semi-Major Axis:     42.67738365 +/-    0.0093
Time of Perihelion: 2474295.1438 +/-      44.9
Perihelion:          40.20363058 +/-    0.0292
Aphelion:            45.15113672 +/-    0.0296
Period (y)              278.8078 +/-      0.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -20.42824202 +/-    0.0012
Ecliptic Y          -36.14179155 +/-    0.0021
Ecliptic Z           -5.15599226 +/-    0.0003
Ecliptic XDOT         0.00238246 +/-    0.0000
Ecliptic YDOT        -0.00121343 +/-    0.0000
Ecliptic ZDOT         0.00025411 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.83451237 +/-    0.0019
Geocenter to KBO     40.86687824 +/-    0.0024
# Hcoef:  5.42

The following table shows the complete astrometric record for 13LY35. 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 (13LY35) followed by the observatory code and reference code for the source of the astrometry.

2010 06  07.39835  15 44 57.155  -27 15 14.76  22.3r 13LY35    F51  C~1w3u      
2011 06  07.38716  15 51 06.462  -27 26 04.25  21.9w 13LY35    F51  C~1w3u      
2011 06  07.42975  15 51 06.242  -27 26 03.46  22.2w 13LY35    F51  C~1w3u      
2012 06  12.35042  15 56 47.758  -27 34 04.52  22.2w 13LY35    F51  C~1w3u      
2012 06  12.36437  15 56 47.675  -27 34 04.03  22.0w 13LY35    F51  C~1w3u      
2012 06  12.37840  15 56 47.621  -27 34 03.85  22.1w 13LY35    F51  C~1w3u      
2012 06  12.39240  15 56 47.525  -27 34 03.55  22.2w 13LY35    F51  C~1w3u      
2013 04  16.53412  16 07 44.980  -27 54 38.68  22.1w 13LY35    F51  C~1w3u      
2013 06  12.38336  16 03 00.322  -27 42 55.67  21.9w 13LY35    F51  C~1w3u      
2013 06  12.40505  16 03 00.202  -27 42 55.15  22.3w 13LY35    F51  C~1w3u      
2013 06  30.33578  16 01 37.967  -27 37 31.44  22.2w 13LY35    F51  C~1w3u      
2013 06  30.33655  16 01 37.967  -27 37 31.05  14.2w 13LY35    F51  C~1w3u      
2013 06  30.34964  16 01 37.916  -27 37 30.97  22.4w 13LY35    F51  C~1w3u      
2013 06  30.35041  16 01 37.911  -27 37 31.04  21.8w 13LY35    F51  C~1w3u      
2013 06  30.36355  16 01 37.855  -27 37 30.64  22.6w 13LY35    F51  C~1w3u      
2013 06  30.36432  16 01 37.846  -27 37 30.60  22.3w 13LY35    F51  C~1w3u      

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     0.04       0.00     0.07
  2   0.9993   4945.31    -0.05     432.99    -0.14
  3   0.9994   4942.27    -0.07     433.15    -0.15
  4   2.0149   9493.95     0.16     895.31    -0.03
  5   2.0150   9492.77    -0.05     895.57     0.16
  6   2.0150   9492.02     0.17     895.60     0.13
  7   2.0150   9490.71    -0.17     895.64     0.10
  8   2.8587  18336.84    -0.02    1332.25     0.06
  9   3.0143  14470.90     0.12    1333.32    -0.06
 10   3.0144  14469.23    -0.03    1333.53     0.05
 11   3.0635  13330.18    -0.01    1445.36    -0.26
 12   3.0635  13330.10    -0.04    1445.74     0.12
 13   3.0635  13329.42     0.04    1445.69    -0.03
 14   3.0635  13329.37     0.03    1445.61    -0.11
 15   3.0636  13328.56    -0.02    1445.86     0.04
 16   3.0636  13328.43    -0.10    1445.88     0.05

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.

13LY35    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        42.420    42.446    42.394
ecceobj         0.056     0.057     0.055
incobj          8.723     8.723     8.723
qmin           39.350    39.340    39.305
qmax           46.345    46.356    46.278
amean          42.727    42.753    42.690
amin           42.395    42.421    42.340
amax           43.075    43.102    43.040
emean           0.059     0.060     0.058
emin            0.043     0.043     0.040
emax            0.077     0.077     0.076
imean          10.331    10.331    10.322
imin            9.563     9.563     9.541
imax           11.075    11.061    11.085
excite_mean     0.189     0.189     0.188
fracstop        1.000     1.000     1.000
cjmean          3.044     3.044     3.044

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       175.4     175.5     174.9
kozaiamp        180.0     179.9     180.0