Orbit Fit and Astrometric record for 14UW224

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: 14UW224   
# Created Sun Oct 22 01:38:30 2017
# Orbit generated from Bernstein formalism
# Fitting   26 observations of   26
# Arc: 139.78d
# First observation: 2014/10/28
#  Last observation: 2015/03/17
Preliminary a, adot, b, bdot, g, gdot:
  -0.000072   0.035158  -0.000011  -0.001363   0.029124   0.000000
# Chi-squared of fit:    14.69 DOF:   46 RMS:  0.13
# Min/Max residuals:    -0.27    0.41
# Exact a, adot, b, bdot, g, gdot:
  1.891083E-05  3.568541E-02  3.813227E-07 -1.355499E-03  2.897787E-02  7.039283E-03
# Covariance matrix:
  4.8122E-13 -5.2802E-12 -9.0057E-15 -4.9751E-14 -5.0409E-13  4.0398E-11
 -5.2802E-12  3.3925E-10  1.5381E-12 -1.3766E-12  8.8412E-11  2.6755E-09
 -9.0057E-15  1.5381E-12  2.5264E-13 -8.2061E-13  4.4862E-13  1.7185E-11
 -4.9751E-14 -1.3766E-12 -8.2061E-13  3.4817E-12 -6.2147E-13 -4.0228E-11
 -5.0409E-13  8.8412E-11  4.4862E-13 -6.2147E-13  2.5838E-11  9.9364E-10
  4.0398E-11  2.6755E-09  1.7185E-11 -4.0228E-11  9.9364E-10  5.3988E-08
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.942396  119.855978    0.991414   -0.002717   -0.084735  2456959.097028
# Heliocentric elements and errors
Epoch:              2456950.5000  =  2014/10/20
Mean Anomaly:           12.63852 +/-     0.329
Argument of Peri:      188.45816 +/-     0.945
Long of Asc Node:      257.08120 +/-     0.041
Inclination:             2.94257 +/-     0.002
Eccentricity:         0.41638176 +/-    0.0054
Semi-Major Axis:     56.53732489 +/-    0.3341
Time of Perihelion: 2451499.2625 +/-     133.4
Perihelion:          32.99621418 +/-    0.3618
Aphelion:            80.07843561 +/-    0.5628
Period (y)              425.1196 +/-      3.77
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -16.35500632 +/-    0.0030
Ecliptic Y           30.47975852 +/-    0.0052
Ecliptic Z           -1.16968802 +/-    0.0002
Ecliptic XDOT        -0.00325726 +/-    0.0000
Ecliptic YDOT        -0.00111057 +/-    0.0000
Ecliptic ZDOT        -0.00015043 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   34.61025977 +/-    0.0048
Geocenter to KBO     34.50909071 +/-    0.0061
# Hcoef:  6.76

The following table shows the complete astrometric record for 14UW224. 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 (14UW224) followed by the observatory code and reference code for the source of the astrometry.

2014 10  28.59625  08 06 23.952  +18 16 53.85  22.2w 14UW224   F51  C~1vXn      
2014 10  28.60816  08 06 23.961  +18 16 54.14  21.9w 14UW224   F51  C~1vXn      
2014 10  28.62009  08 06 23.944  +18 16 54.08  22.1w 14UW224   F51  C~1vXn      
2014 12  21.58605  08 04 11.454  +18 20 09.23  22.3w 14UW224   F51  C~1vXn      
2014 12  21.59991  08 04 11.405  +18 20 09.43  22.6w 14UW224   F51  C~1vXn      
2014 12  21.61360  08 04 11.315  +18 20 09.73  22.1w 14UW224   F51  C~1vXn      
2014 12  21.62734  08 04 11.270  +18 20 09.60  22.7w 14UW224   F51  C~1vXn      
2014 12  21.65060  08 04 11.129  +18 20 10.20  22.1w 14UW224   F51  C~1vXn      
2014 12  21.65257  08 04 11.127  +18 20 10.12  22.3w 14UW224   F51  C~1vXn      
2014 12  21.65454  08 04 11.098  +18 20 10.23  22.3w 14UW224   F51  C~1vXn      
2014 12  21.65719  08 04 11.130  +18 20 10.02  22.7w 14UW224   F51  C~1vXn      
2015 01  16.33756  08 01 47.383  +18 26 27.03  22.3w 14UW224   F51  C~1vXn      
2015 01  16.34974  08 01 47.297  +18 26 27.51  22.1w 14UW224   F51  C~1vXn      
2015 01  16.36195  08 01 47.232  +18 26 27.69  22.1w 14UW224   F51  C~1vXn      
2015 02  17.27950  07 58 47.254  +18 35 09.74  21.9w 14UW224   F51  C~1vXn      
2015 02  17.29180  07 58 47.210  +18 35 09.83  22.0w 14UW224   F51  C~1vXn      
2015 02  17.30420  07 58 47.132  +18 35 09.99  22.2w 14UW224   F51  C~1vXn      
2015 02  17.31657  07 58 47.083  +18 35 10.42  22.2w 14UW224   F51  C~1vXn      
2015 03  16.36558  07 57 03.870  +18 40 49.72  22.3w 14UW224   F51  C~1vXn      
2015 03  16.37792  07 57 03.841  +18 40 50.03  22.6w 14UW224   F51  C~1vXn      
2015 03  16.39020  07 57 03.811  +18 40 49.95  22.4w 14UW224   F51  C~1vXn      
2015 03  16.40241  07 57 03.783  +18 40 50.23  22.5w 14UW224   F51  C~1vXn      
2015 03  17.34182  07 57 01.486  +18 40 58.76  22.2w 14UW224   F51  C~1vXn      
2015 03  17.35424  07 57 01.448  +18 40 58.85  22.1w 14UW224   F51  C~1vXn      
2015 03  17.36674  07 57 01.413  +18 40 59.10  22.4w 14UW224   F51  C~1vXn      
2015 03  17.37928  07 57 01.380  +18 40 59.22  22.2w 14UW224   F51  C~1vXn      

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     0.12       0.00    -0.23
  2   0.0000      0.06     0.08       0.31     0.13
  3   0.0001     -0.16    -0.24       0.20     0.07
  4   0.1478  -1886.47    -0.12    -199.57    -0.11
  5   0.1479  -1887.20     0.17    -199.52    -0.02
  6   0.1479  -1888.51    -0.14    -199.49     0.06
  7   0.1479  -1889.11     0.27    -199.75    -0.16
  8   0.1480  -1891.20    -0.12    -199.57     0.09
  9   0.1480  -1891.21     0.01    -199.66     0.01
 10   0.1480  -1891.64    -0.27    -199.63     0.04
 11   0.1480  -1891.15     0.41    -199.74    -0.06
 12   0.2183  -3971.58    -0.01    -248.02    -0.08
 13   0.2184  -3972.88    -0.24    -247.79     0.15
 14   0.2184  -3973.82    -0.11    -247.81     0.15
 15   0.3058  -6588.21    -0.07    -249.16     0.04
 16   0.3058  -6588.84     0.20    -249.19    -0.01
 17   0.3058  -6589.96    -0.01    -249.26    -0.08
 18   0.3059  -6590.73     0.13    -248.97     0.19
 19   0.3799  -8097.79    -0.07    -205.46    -0.12
 20   0.3800  -8098.25    -0.07    -205.23     0.08
 21   0.3800  -8098.66    -0.00    -205.40    -0.10
 22   0.3800  -8099.10     0.01    -205.20     0.07
 23   0.3826  -8132.83     0.13    -203.23    -0.06
 24   0.3826  -8133.38     0.03    -203.24    -0.10
 25   0.3827  -8133.92    -0.05    -203.10     0.03
 26   0.3827  -8134.40    -0.07    -203.07     0.03

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.

14UW224    quality flag:2

Type:       SCATNEAR   REMOVED  SCATNEAR

axisobj        56.580    57.850    55.428
ecceobj         0.417     0.436     0.400
incobj          2.939     2.937     2.942
qmin           31.367    30.338    31.809
qmax           92.232    90.758    80.805
amean          57.231    55.483    53.719
amin           48.578    46.620    49.833
amax           62.497    61.710    56.663
emean           0.432     0.415     0.387
emin            0.322     0.340     0.340
emax            0.479     0.471     0.428
imean           7.991     5.458     7.530
imin            3.871     1.918     3.952
imax           10.324     8.192     9.945
excite_mean     0.454     0.427     0.409
fracstop        1.000     0.782     1.000
cjmean          2.986     2.998     3.000

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       175.5     180.5     181.9
kozaiamp        180.0     180.0     180.0