Orbit Fit and Astrometric record for 14BW64

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: 14BW64    
# Created Mon Dec 11 02:38:02 2017
# Orbit generated from Bernstein formalism
# Fitting   33 observations of   34
# Arc:   4.04y
# First observation: 2011/01/30
#  Last observation: 2015/02/12
Preliminary a, adot, b, bdot, g, gdot:
  -0.000084   0.030794  -0.000075  -0.008408   0.026439   0.000000
# Chi-squared of fit:    12.02 DOF:   60 RMS:  0.11
# Min/Max residuals:    -0.34    0.30
# Exact a, adot, b, bdot, g, gdot:
  1.741581E-05  3.175127E-02 -4.499239E-06 -8.701478E-03  2.907966E-02  8.776082E-03
# Covariance matrix:
  4.8494E-13 -2.7544E-13 -1.5179E-14  4.3176E-14 -1.1658E-13 -1.2405E-12
 -2.7544E-13  5.7824E-13  5.3384E-14 -1.5108E-13  5.9805E-13  4.3455E-12
 -1.5179E-14  5.3384E-14  4.3503E-13 -1.3198E-13  6.1501E-14  4.2894E-13
  4.3176E-14 -1.5108E-13 -1.3198E-13  7.7980E-14 -1.7264E-13 -1.2133E-12
 -1.1658E-13  5.9805E-13  6.1501E-14 -1.7264E-13  1.0360E-12  4.9741E-12
 -1.2405E-12  4.3455E-12  4.2894E-13 -1.2133E-12  4.9741E-12  3.4900E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    3.601046  127.474262   -0.047348    0.061995   -0.985125  2455591.972616
# Heliocentric elements and errors
Epoch:              2455590.5000  =  2011/01/29
Mean Anomaly:           33.39385 +/-     0.008
Argument of Peri:      102.11886 +/-     0.022
Long of Asc Node:      320.10492 +/-     0.000
Inclination:            15.71448 +/-     0.000
Eccentricity:         0.34211965 +/-    0.0002
Semi-Major Axis:     45.88338065 +/-    0.0058
Time of Perihelion: 2445060.0836 +/-       1.6
Perihelion:          30.18577433 +/-    0.0081
Aphelion:            61.58098697 +/-    0.0106
Period (y)              310.8074 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -21.51515376 +/-    0.0007
Ecliptic Y           27.99126031 +/-    0.0010
Ecliptic Z            2.15971652 +/-    0.0001
Ecliptic XDOT        -0.00290655 +/-    0.0000
Ecliptic YDOT        -0.00111738 +/-    0.0000
Ecliptic ZDOT        -0.00076572 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.37056503 +/-    0.0009
Geocenter to KBO     34.38829446 +/-    0.0012
# Hcoef:  6.34

The following table shows the complete astrometric record for 14BW64. 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 (14BW64) followed by the observatory code and reference code for the source of the astrometry.

2011 01  30.47185  08 43 28.805  +21 52 53.62  21.8w 14BW64    F51  C~1vXD      
2011 01  30.48703  08 43 28.710  +21 52 53.90  21.8w 14BW64    F51  C~1vXD      
2011 01  30.50335  08 43 28.614  +21 52 54.16  21.7w 14BW64    F51  C~1vXD      
2014 01  24.37197  09 04 09.426  +18 58 52.92  22.0w 14BW64    F51  C~1vXD      
2014 01  24.38514  09 04 09.358  +18 58 52.94  21.9w 14BW64    F51  C~1vXD      
2014 01  24.39832  09 04 09.282  +18 58 53.33  21.9w 14BW64    F51  C~1vXD      
2014 01  24.41153  09 04 09.201  +18 58 53.58  22.0w 14BW64    F51  C~1vXD      
2014 02  26.40790  09 01 02.112  +19 09 01.11  22.0w 14BW64    F51  C~1vXD      
2014 02  26.42092  09 01 02.032  +19 09 01.46  22.0w 14BW64    F51  C~1vXD      
2014 02  26.43393  09 01 01.954  +19 09 01.67  22.0w 14BW64    F51  C~1vXD      
2014 02  26.44695  09 01 01.890  +19 09 01.91  22.0w 14BW64    F51  C~1vXD      
2014 03  06.41101  09 00 22.283  +19 10 53.31  22.0w 14BW64    F51  C~1vXD      
2014 03  06.42407  09 00 22.225  +19 10 54.06  22.2w 14BW64    F51  C~1vXD      
2014 03  06.43714  09 00 22.161  +19 10 53.61  22.1w 14BW64    F51  C~1vXD      
2014 03  06.45025  09 00 22.096  +19 10 53.57  22.0w 14BW64    F51  C~1vXD      
2014 11  04.60058  09 14 09.915  +17 48 54.05  22.2w 14BW64    F51  C~1vXD      
2014 11  04.61116  09 14 09.916  +17 48 54.22  22.3w 14BW64    F51  C~1vXD      
2014 11  04.62171  09 14 09.930  +17 48 54.04  22.2w 14BW64    F51  C~1vXD      
2015 01  17.40903  09 11 08.049  +17 59 18.58  21.9w 14BW64    F51  C~1vXD      
2015 01  17.42104  09 11 07.988  +17 59 18.73  22.0w 14BW64    F51  C~1vXD      
2015 01  17.43307  09 11 07.926  +17 59 19.06  21.9w 14BW64    F51  C~1vXD      
2015 01  17.44511  09 11 07.867  +17 59 19.23  22.0w 14BW64    F51  C~1vXD      
2015 01  17.56998  09 11 07.181  +17 59 21.69  21.7w 14BW64    F51  C~1vXD      
2015 01  17.58226  09 11 07.106  +17 59 21.94  21.8w 14BW64    F51  C~1vXD      
2015 01  17.59462  09 11 07.035  +17 59 22.22  22.0w 14BW64    F51  C~1vXD      
2015 01  17.60703  09 11 06.975  +17 59 22.34  22.0w 14BW64    F51  C~1vXD      
2015 01  22.39535  09 10 40.719  +18 00 58.49  21.9w 14BW64    F51  C~1vXD      
2015 01  22.40750  09 10 40.655  +18 00 58.81  21.9w 14BW64    F51  C~1vXD      
2015 01  22.41964  09 10 40.592  +18 00 59.06  22.0w 14BW64    F51  C~1vXD      
2015 01  22.43182  09 10 40.519  +18 00 59.25  22.0w 14BW64    F51  C~1vXD      
2015 02  12.34125  09 08 41.358  +18 08 00.57  22.3w 14BW64    F51  C~1vXD      
2015 02  12.35524  09 08 41.282  +18 08 00.90  22.0w 14BW64    F51  C~1vXD      
2015 02  12.36748  09 08 41.227  +18 08 00.72  22.1w 14BW64    F51  C~1vXD      
2015 02  12.37976  09 08 41.133  +18 08 01.36  22.2w 14BW64    F51  C~1vXD      

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    -0.03       0.00    -0.05
  2   0.0000     -1.35    -0.04      -0.07    -0.04
  3   0.0001     -2.71     0.04      -0.17    -0.04
  4   2.9840  19705.61    -0.14   -5231.88     0.27
  5   2.9840  19704.68     0.06   -5232.14     0.07
  6   2.9841  19703.52     0.03   -5232.08     0.19
  7   2.9841  19702.34    -0.02   -5232.17     0.16
  8   3.0744  16965.35     0.30   -5414.46    -0.08
  9   3.0745  16964.16     0.11   -5414.45     0.02
 10   3.0745  16963.03    -0.02   -5414.57    -0.00
 11   3.0745  16962.09     0.03   -5414.59     0.06
 12   3.0963  16388.64    -0.12   -5468.04    -0.00
 13   3.0964  16387.63 (  -0.22)  -5467.55 (   0.58)
 14   3.0964  16386.88    -0.06   -5468.25    -0.01
 15   3.0965  16386.01    -0.03   -5468.55    -0.22
 16   3.7622  29255.67     0.17   -6722.27    -0.10
 17   3.7622  29255.63    -0.08   -6722.10     0.08
 18   3.7622  29255.88    -0.04   -6722.21    -0.01
 19   3.9642  26542.66    -0.15   -6908.00     0.01
 20   3.9643  26541.77    -0.05   -6908.11    -0.05
 21   3.9643  26540.81    -0.02   -6908.06     0.05
 22   3.9643  26539.95     0.10   -6908.15     0.01
 23   3.9647  26529.70     0.10   -6908.73     0.00
 24   3.9647  26528.59    -0.01   -6908.81    -0.02
 25   3.9647  26527.52    -0.07   -6908.84     0.00
 26   3.9648  26526.65     0.08   -6908.99    -0.08
 27   3.9779  26134.04    -0.06   -6929.00    -0.01
 28   3.9779  26133.05    -0.02   -6928.97     0.08
 29   3.9780  26132.11     0.06   -6929.00     0.11
 30   3.9780  26131.04     0.02   -6929.13     0.04
 31   4.0352  24356.56    -0.13   -7031.24    -0.07
 32   4.0353  24355.41    -0.08   -7031.24     0.00
 33   4.0353  24354.70     0.26   -7031.65    -0.34
 34   4.0353  24353.21    -0.18   -7031.43    -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.

14BW64    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        46.203    46.221    46.185
ecceobj         0.346     0.346     0.346
incobj         15.700    15.700    15.700
qmin           28.891    28.494    28.786
qmax           64.421    68.848    63.653
amean          44.973    46.901    42.808
amin           40.778    45.307    37.550
amax           47.577    49.530    47.392
emean           0.325     0.355     0.288
emin            0.245     0.315     0.173
emax            0.369     0.394     0.352
imean          16.683    16.823    16.618
imin           14.206    13.957    14.053
imax           19.195    18.711    19.377
excite_mean     0.434     0.459     0.408
fracstop        0.663     0.228     0.547
cjmean          2.884     2.869     2.888

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       185.4     175.2     185.3
kozaiamp        180.0     179.7     179.8