Orbit Fit and Astrometric record for 14WT69

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: 14WT69    
# Created Thu Oct 19 01:38:30 2017
# Orbit generated from Bernstein formalism
# Fitting   35 observations of   35
# Arc:   5.00y
# First observation: 2010/10/08
#  Last observation: 2015/10/08
Preliminary a, adot, b, bdot, g, gdot:
  -0.000389   0.020524   0.000021  -0.003436   0.020952   0.000000
# Chi-squared of fit:    16.51 DOF:   64 RMS:  0.12
# Min/Max residuals:    -0.26    0.40
# Exact a, adot, b, bdot, g, gdot:
  1.392007E-05  2.062944E-02 -2.394205E-06 -3.448347E-03  2.220671E-02  1.565300E-03
# Covariance matrix:
  1.9812E-13 -9.2789E-14 -4.2680E-15  9.1777E-15  2.2036E-14 -5.7403E-13
 -9.2789E-14  1.4343E-13  1.1582E-14 -2.2533E-14  1.0323E-13  1.4090E-12
 -4.2680E-15  1.1582E-14  1.6799E-13 -4.5643E-14  1.0207E-14  1.2684E-13
  9.1777E-15 -2.2533E-14 -4.5643E-14  1.9243E-14 -1.5481E-14 -2.4914E-13
  2.2036E-14  1.0323E-13  1.0207E-14 -1.5481E-14  3.9174E-13  9.6729E-13
 -5.7403E-13  1.4090E-12  1.2684E-13 -2.4914E-13  9.6729E-13  1.5579E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    7.501749   43.728303    0.478661    0.113940   -0.865417  2455477.901776
# Heliocentric elements and errors
Epoch:              2455470.5000  =  2010/10/01
Mean Anomaly:           54.33002 +/-     0.060
Argument of Peri:       79.61263 +/-     0.080
Long of Asc Node:      260.87746 +/-     0.001
Inclination:            11.91003 +/-     0.000
Eccentricity:         0.07798052 +/-    0.0002
Semi-Major Axis:     47.87175755 +/-    0.0052
Time of Perihelion: 2437212.4292 +/-      19.9
Perihelion:          44.13869318 +/-    0.0098
Aphelion:            51.60482191 +/-    0.0103
Period (y)              331.2282 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           33.22776724 +/-    0.0009
Ecliptic Y           31.11777450 +/-    0.0009
Ecliptic Z            5.87904130 +/-    0.0002
Ecliptic XDOT        -0.00157957 +/-    0.0000
Ecliptic YDOT         0.00201490 +/-    0.0000
Ecliptic ZDOT        -0.00039632 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   45.90167244 +/-    0.0009
Geocenter to KBO     45.03142491 +/-    0.0013
# Hcoef:  5.87

The following table shows the complete astrometric record for 14WT69. 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 (14WT69) followed by the observatory code and reference code for the source of the astrometry.

2010 10  08.40101  02 35 21.392  +23 06 11.65  22.5w 14WT69    F51  C~1w3w      
2010 10  08.43741  02 35 21.229  +23 06 11.15  22.8w 14WT69    F51  C~1w3w      
2010 10  08.45650  02 35 21.153  +23 06 10.85  22.6w 14WT69    F51  C~1w3w      
2010 11  03.44626  02 33 25.792  +22 57 43.54  23.0w 14WT69    F51  C~1w3w      
2010 11  03.45903  02 33 25.748  +22 57 42.94  22.9w 14WT69    F51  C~1w3w      
2010 11  03.47182  02 33 25.692  +22 57 42.68  22.9w 14WT69    F51  C~1w3w      
2010 11  03.48447  02 33 25.619  +22 57 42.20  22.7w 14WT69    F51  C~1w3w      
2012 10  19.52506  02 44 51.863  +23 23 39.50  22.4w 14WT69    F51  C~1w3w      
2012 10  19.53932  02 44 51.796  +23 23 39.41  22.5w 14WT69    F51  C~1w3w      
2012 10  19.55356  02 44 51.710  +23 23 39.19  22.4w 14WT69    F51  C~1w3x      
2012 11  05.50158  02 43 34.296  +23 17 55.78  21.8i 14WT69    F51  C~1w3x      
2012 11  05.51524  02 43 34.260  +23 17 55.63  21.7i 14WT69    F51  C~1w3x      
2013 07  18.59733  02 52 03.277  +23 32 45.66  22.6w 14WT69    F51  C~1w3x      
2013 07  18.60152  02 52 03.288  +23 32 45.75  22.3w 14WT69    F51  C~1w3x      
2013 07  18.60569  02 52 03.300  +23 32 45.86  22.9w 14WT69    F51  C~1w3x      
2013 07  18.60985  02 52 03.309  +23 32 46.03  22.6w 14WT69    F51  C~1w3x      
2013 10  25.52500  02 49 35.962  +23 31 21.41  21.9i 14WT69    F51  C~1w3x      
2013 10  25.53757  02 49 35.896  +23 31 21.18  21.6i 14WT69    F51  C~1w3x      
2013 10  30.34776  02 49 13.924  +23 29 47.02  22.3w 14WT69    F51  C~1w3x      
2014 11  17.306598 02 53 00.946  +23 32 21.91  21.8R 14WT69    F51  C~1COj      
2014 11  17.318510 02 53 00.881  +23 32 21.60  21.4R 14WT69    F51  C~1COj      
2014 11  17.330498 02 53 00.833  +23 32 21.28  21.5R 14WT69    F51  C~1COj      
2014 11  17.342675 02 53 00.769  +23 32 21.14  21.9R 14WT69    F51  C~1COj      
2014 11  19.231440 02 52 52.10   +23 31 37.9   22.2R 14WT69    H01  C~1COj      
2014 11  19.250698 02 52 52.01   +23 31 37.5   22.7R 14WT69    H01  C~1COj      
2014 11  19.263751 02 52 51.96   +23 31 37.2   22.9R 14WT69    H01  C~1COj      
2014 11  19.277195 02 52 51.89   +23 31 37.0   22.9R 14WT69    H01  C~1COj      
2014 11  21.067697 02 52 43.74   +23 30 55.7   21.3R 14WT69    H01  C~1COj      
2014 11  21.086215 02 52 43.65   +23 30 55.2   21.9R 14WT69    H01  C~1COj      
2014 11  21.110392 02 52 43.54   +23 30 54.7   22.5R 14WT69    H01  C~1COj      
2014 11  21.120279 02 52 43.51   +23 30 54.4   21.5R 14WT69    H01  C~1COj      
2015 10  08.426645 03 01 07.666  +23 52 45.20  21.6R 14WT69    F51  C~1w3x      
2015 10  08.438457 03 01 07.598  +23 52 45.10  21.4R 14WT69    F51  C~1w3x      
2015 10  08.450229 03 01 07.549  +23 52 44.79  22.3R 14WT69    F51  C~1w3x      
2015 10  08.461986 03 01 07.512  +23 52 44.70  22.0R 14WT69    F51  C~1w3x      

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    -0.01
  2   0.0001     -2.29     0.01       0.23     0.09
  3   0.0002     -3.38     0.05       0.27     0.07
  4   0.0713  -1674.64    -0.14      18.79     0.25
  5   0.0713  -1675.41    -0.02      18.41    -0.12
  6   0.0714  -1676.22     0.04      18.41    -0.10
  7   0.0714  -1677.33    -0.19      18.27    -0.22
  8   2.0318   7811.35     0.10   -1398.57    -0.20
  9   2.0319   7810.44     0.11   -1398.38    -0.03
 10   2.0319   7809.24    -0.17   -1398.24     0.10
 11   2.0783   6687.80    -0.02   -1408.22    -0.12
 12   2.0783   6687.28     0.40   -1408.22    -0.09
 13   2.7767  13666.05    -0.02   -2606.37     0.14
 14   2.7767  13666.22    -0.01   -2606.33     0.15
 15   2.7767  13666.42     0.02   -2606.27     0.18
 16   2.7768  13666.58     0.03   -2606.14     0.28
 17   3.0476  11693.44    -0.16   -2103.91    -0.13
 18   3.0476  11692.50    -0.26   -2103.87    -0.08
 19   3.0608  11374.96     0.04   -2106.47    -0.01
 20   4.1093  14423.31     0.10   -2855.46     0.01
 21   4.1093  14422.36    -0.03   -2855.50     0.00
 22   4.1093  14421.64     0.06   -2855.62    -0.08
 23   4.1094  14420.75     0.01   -2855.50     0.08
 24   4.1145  14293.54    -0.01   -2863.13    -0.04
 25   4.1146  14292.23    -0.00   -2863.16     0.00
 26   4.1146  14291.49     0.14   -2863.25    -0.04
 27   4.1147  14290.50     0.07   -2863.17     0.09
 28   4.1196  14170.72    -0.08   -2870.93     0.04
 29   4.1196  14169.39    -0.18   -2871.06    -0.02
 30   4.1197  14167.79    -0.16   -2871.11     0.03
 31   4.1197  14167.30     0.03   -2871.28    -0.10
 32   4.9994  21237.86     0.26   -3535.47    -0.05
 33   4.9994  21236.92    -0.03   -3535.31     0.07
 34   4.9995  21236.18    -0.12   -3535.43    -0.08
 35   4.9995  21235.67     0.00   -3535.38    -0.06

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.

14WT69    quality flag:2

Type:       SCATNEAR      2:1E  SCATNEAR

axisobj        48.057    48.073    48.041
ecceobj         0.080     0.080     0.079
incobj         11.892    11.892    11.892
qmin           39.912    39.500    41.033
qmax           56.151    56.707    55.308
amean          47.803    47.796    47.787
amin           47.273    47.269    47.258
amax           48.384    48.398    48.383
emean           0.111     0.129     0.090
emin            0.047     0.041     0.032
emax            0.162     0.174     0.143
imean          12.741    12.361    13.301
imin           11.566    11.305    12.521
imax           13.983    13.960    13.937
excite_mean     0.249     0.251     0.248
fracstop        1.000     1.000     1.000
cjmean          3.071     3.069     3.071

libcent 0      -180.0     177.3    -180.0
libamp  0      -180.0     169.7    -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       205.9     212.8     183.7
kozaiamp        179.8     179.9     180.0