Orbit Fit and Astrometric record for 14GW53

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: 14GW53    
# Created Sun Oct 22 01:38:23 2017
# Orbit generated from Bernstein formalism
# Fitting   64 observations of   65
# Arc:   4.91y
# First observation: 2012/05/21
#  Last observation: 2017/04/20
Preliminary a, adot, b, bdot, g, gdot:
  -0.000366   0.023619   0.000121  -0.008515   0.024914   0.000000
# Chi-squared of fit:    16.72 DOF:  122 RMS:  0.09
# Min/Max residuals:    -0.39    0.30
# Exact a, adot, b, bdot, g, gdot:
  1.468972E-05  2.334761E-02 -5.195845E-06 -8.438572E-03  2.512239E-02 -2.355635E-03
# Covariance matrix:
  2.4471E-13 -1.6529E-13 -3.1766E-14  3.9756E-14 -9.1127E-14 -1.1088E-12
 -1.6529E-13  1.5249E-13  3.3988E-14 -4.3551E-14  6.8303E-14  1.2137E-12
 -3.1766E-14  3.3988E-14  1.2657E-13 -5.4696E-14  1.8539E-14  3.1104E-13
  3.9756E-14 -4.3551E-14 -5.4696E-14  3.4273E-14 -2.1963E-14 -3.9894E-13
 -9.1127E-14  6.8303E-14  1.8539E-14 -2.1963E-14  8.8837E-14  6.1380E-13
 -1.1088E-12  1.2137E-12  3.1104E-13 -3.9894E-13  6.1380E-13  1.1117E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    9.395775 -149.608245   -0.508333    0.143422   -0.866946  2456068.850266
# Heliocentric elements and errors
Epoch:              2456060.5000  =  2012/05/13
Mean Anomaly:          282.47755 +/-     0.018
Argument of Peri:      241.48520 +/-     0.023
Long of Asc Node:       54.78216 +/-     0.000
Inclination:            21.96053 +/-     0.000
Eccentricity:         0.08152902 +/-    0.0001
Semi-Major Axis:     41.13222826 +/-    0.0019
Time of Perihelion: 2476809.4801 +/-       4.5
Perihelion:          37.77875815 +/-    0.0058
Aphelion:            44.48569837 +/-    0.0059
Period (y)              263.8041 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -34.37270633 +/-    0.0004
Ecliptic Y          -20.74929696 +/-    0.0002
Ecliptic Z            6.49816031 +/-    0.0001
Ecliptic XDOT         0.00137111 +/-    0.0000
Ecliptic YDOT        -0.00213918 +/-    0.0000
Ecliptic ZDOT        -0.00094911 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.67237824 +/-    0.0004
Geocenter to KBO     39.80513322 +/-    0.0005
# Hcoef:  5.70

The following table shows the complete astrometric record for 14GW53. 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 (14GW53) followed by the observatory code and reference code for the source of the astrometry.

2012 05  21.34950  14 06 16.107  -02 47 40.97  21.5w 14GW53    F51  C~1vXM      
2012 05  21.36401  14 06 16.040  -02 47 40.74  21.6w 14GW53    F51  C~1vXM      
2012 05  21.37851  14 06 15.980  -02 47 40.66  21.4w 14GW53    F51  C~1vXM      
2012 05  21.39304  14 06 15.918  -02 47 40.46  21.6w 14GW53    F51  C~1vXM      
2013 01  16.63146  14 16 40.387  -04 18 07.40  21.7w 14GW53    F51  C~1vXM      
2013 01  16.63540  14 16 40.394  -04 18 07.56  21.7w 14GW53    F51  C~1vXM      
2013 01  16.63934  14 16 40.398  -04 18 07.48  22.0w 14GW53    F51  C~1vXM      
2013 01  16.64331  14 16 40.405  -04 18 07.57  21.9w 14GW53    F51  C~1vXM      
2013 04  10.42500  14 13 53.535  -03 55 10.41  21.6w 14GW53    F51  C~1vXM      
2013 04  10.43862  14 13 53.471  -03 55 10.01  21.4w 14GW53    F51  C~1vXM      
2013 04  10.45234  14 13 53.407  -03 55 09.73  21.6w 14GW53    F51  C~1vXM      
2013 04  10.46600  14 13 53.351  -03 55 09.30  21.4w 14GW53    F51  C~1vXM      
2013 05  03.38127  14 12 02.550  -03 47 06.06  21.4w 14GW53    F51  C~1vXM      
2013 05  03.39484  14 12 02.484  -03 47 05.64  21.6w 14GW53    F51  C~1vXM      
2013 05  03.40840  14 12 02.412  -03 47 05.41  21.6w 14GW53    F51  C~1vXM      
2013 05  03.42197  14 12 02.343  -03 47 05.21  21.5w 14GW53    F51  C~1vXM      
2014 04  04.49220  14 18 47.187  -04 52 39.58  21.5w 14GW53    F51  C~1vXM      
2014 04  04.50556  14 18 47.136  -04 52 39.14  21.6w 14GW53    F51  C~1vXM      
2014 04  04.51893  14 18 47.065  -04 52 38.79  21.7w 14GW53    F51  C~1vXM      
2014 04  04.53235  14 18 47.006  -04 52 38.56  21.5w 14GW53    F51  C~1vXM      
2014 05  07.34769  14 16 09.680  -04 41 10.12  21.3i 14GW53    F51  C~1vXM      
2014 05  07.36027  14 16 09.610  -04 41 10.04  21.2i 14GW53    F51  C~1vXM      
2014 05  07.37286  14 16 09.551  -04 41 09.85  21.1i 14GW53    F51  C~1vXM      
2014 05  07.38546  14 16 09.496  -04 41 09.60  21.1i 14GW53    F51  C~1vXM      
2014 05  17.44595  14 15 22.257  -04 38 34.14  21.4i 14GW53    F51  C~1vXM      
2014 05  17.45797  14 15 22.230  -04 38 33.39  21.2i 14GW53    F51  C~1vXM      
2014 05  17.48205  14 15 22.111  -04 38 33.56  20.9i 14GW53    F51  C~1vXM      
2014 06  30.31896  14 12 54.798  -04 35 59.16  21.8w 14GW53    F51  C~1vXM      
2014 06  30.33219  14 12 54.776  -04 35 59.18  21.7w 14GW53    F51  C~1vXM      
2014 06  30.34544  14 12 54.753  -04 35 59.35  21.8w 14GW53    F51  C~1vXM      
2014 06  30.35867  14 12 54.720  -04 35 59.43  21.7w 14GW53    F51  C~1vXM      
2015 01  28.61445  14 25 35.611  -06 05 17.19  21.8w 14GW53    F51  C~1vXM      
2015 01  28.62672  14 25 35.614  -06 05 17.19  21.7w 14GW53    F51  C~1vXM      
2015 01  28.63897  14 25 35.627  -06 05 17.03  21.7w 14GW53    F51  C~1vXM      
2015 01  28.65127  14 25 35.635  -06 05 17.11  21.7w 14GW53    F51  C~1vXM      
2015 02  23.59540  14 25 24.103  -06 01 09.72  21.8w 14GW53    F51  C~1vXM      
2015 02  23.60845  14 25 24.081  -06 01 09.54  21.8w 14GW53    F51  C~1vXM      
2015 02  23.62150  14 25 24.057  -06 01 09.37  21.8w 14GW53    F51  C~1vXM      
2015 02  23.63452  14 25 24.025  -06 01 09.14  21.7w 14GW53    F51  C~1vXM      
2015 02  24.58352  14 25 22.398  -06 00 54.90  21.8w 14GW53    F51  C~1vXM      
2015 02  24.59654  14 25 22.376  -06 00 54.59  21.9w 14GW53    F51  C~1vXM      
2015 02  24.60956  14 25 22.356  -06 00 54.50  21.8w 14GW53    F51  C~1vXM      
2015 02  24.62260  14 25 22.334  -06 00 54.32  21.9w 14GW53    F51  C~1vXM      
2015 03  21.52053  14 24 12.888  -05 53 06.20  21.6w 14GW53    F51  C~1vXM      
2015 03  21.53323  14 24 12.836  -05 53 05.96  21.7w 14GW53    F51  C~1vXM      
2015 03  21.54611  14 24 12.796  -05 53 05.68  21.6w 14GW53    F51  C~1vXM      
2015 03  21.55887  14 24 12.745  -05 53 05.45  21.7w 14GW53    F51  C~1vXM      
2015 04  20.43490  14 22 01.100  -05 42 05.47  21.4w 14GW53    F51  C~1vXM      
2015 04  20.44757  14 22 01.035  -05 42 05.39  21.6w 14GW53    F51  C~1vXM      
2015 04  20.46026  14 22 00.968  -05 42 05.10  21.5w 14GW53    F51  C~1vXM      
2015 04  20.47291  14 22 00.911  -05 42 04.86  21.5w 14GW53    F51  C~1vXM      
2015 05  25.32194  14 19 14.938  -05 32 14.37  21.1i 14GW53    F51  C~1vXM      
2015 05  25.33485  14 19 14.877  -05 32 14.24  21.3i 14GW53    F51  C~1vXM      
2015 05  25.34775  14 19 14.824  -05 32 14.04  21.1i 14GW53    F51  C~1vXM      
2015 05  25.36063  14 19 14.778  -05 32 13.94  21.2i 14GW53    F51  C~1vXM      
2015 07  01.29204  14 17 16.455  -05 30 43.94  21.2i 14GW53    F51  C~1vXM      
2015 07  01.30490  14 17 16.419  -05 30 44.03  21.3i 14GW53    F51  C~1vXM      
2015 07  01.31767  14 17 16.399  -05 30 44.17  21.1i 14GW53    F51  C~1vXM      
2015 07  02.27197  14 17 14.677  -05 30 50.91  21.4i 14GW53    F51  C~1vXM      
2015 07  02.28488  14 17 14.651  -05 30 50.95  21.1i 14GW53    F51  C~1vXM      
2015 07  02.29790  14 17 14.632  -05 30 51.01  21.0i 14GW53    F51  C~1vXM      
2015 07  02.31081  14 17 14.610  -05 30 51.20  21.1i 14GW53    F51  C~1vXM      
2017 04  20.44072  14 31 01.049  -07 32 51.24  22.0w 14GW53    F51  C~2Ee2      
2017 04  20.45173  14 31 00.943  -07 32 50.85  21.9w 14GW53    F51  C~2Ee2      
2017 04  20.47384  14 31 00.827  -07 32 50.56  21.9w 14GW53    F51  C~2Ee2      

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     0.00       0.00    -0.02
  2   0.0000     -1.02    -0.08      -0.13     0.03
  3   0.0001     -1.89    -0.01      -0.36    -0.03
  4   0.0001     -2.83    -0.01      -0.49     0.02
  5   0.6579  10648.60     0.01   -1901.24     0.06
  6   0.6579  10648.75     0.07   -1901.36    -0.09
  7   0.6579  10648.78     0.01   -1901.26    -0.03
  8   0.6579  10648.91     0.05   -1901.31    -0.11
  9   0.8873   7826.33    -0.00   -1457.93    -0.12
 10   0.8873   7825.29    -0.02   -1457.88    -0.04
 11   0.8873   7824.29     0.02   -1457.95    -0.07
 12   0.8874   7823.35     0.11   -1457.83     0.09
 13   0.9501   6097.81     0.12   -1570.59    -0.04
 14   0.9502   6096.73     0.07   -1570.53     0.12
 15   0.9502   6095.64     0.00   -1570.68     0.08
 16   0.9502   6094.60    -0.01   -1570.85     0.02
 17   1.8703  13145.75    -0.07   -3207.33    -0.13
 18   1.8704  13144.88     0.02   -3207.18     0.05
 19   1.8704  13143.75    -0.14   -3207.21     0.04
 20   1.8705  13142.84    -0.08   -3207.29    -0.03
 21   1.9603  10688.85    -0.01   -3359.88     0.18
 22   1.9603  10687.83    -0.08   -3360.16     0.01
 23   1.9604  10686.94    -0.03   -3360.28    -0.00
 24   1.9604  10686.08     0.05   -3360.33     0.06
 25   1.9879   9967.30    -0.15   -3454.85    -0.39
 26   1.9880   9966.66     0.06   -3454.28     0.30
 27   1.9880   9965.04     0.12   -3455.05    -0.21
 28   2.1081   7838.09    -0.09   -4061.89    -0.02
 29   2.1081   7837.79    -0.08   -4062.02     0.07
 30   2.1081   7837.52    -0.03   -4062.30     0.01
 31   2.1082   7837.08    -0.15   -4062.54    -0.01
 32   2.6893  20411.36     0.05   -5255.09     0.05
 33   2.6893  20411.40    -0.02   -5255.08    -0.02
 34   2.6894  20411.53    -0.00   -5254.86     0.11
 35   2.6894  20411.67     0.03   -5254.90    -0.01
 36   2.7604  20163.60    -0.05   -5078.80     0.04
 37   2.7605  20163.23    -0.03   -5078.74     0.04
 38   2.7605  20162.83    -0.04   -5078.70     0.01
 39   2.7605  20162.29    -0.18   -5078.65    -0.00
 40   2.7631  20134.36    -0.08   -5073.37    -0.05
 41   2.7632  20133.95    -0.09   -5073.19     0.06
 42   2.7632  20133.63     0.01   -5073.21    -0.02
 43   2.7632  20133.26     0.05   -5073.15    -0.03
 44   2.8314  18989.32     0.00   -4980.67    -0.02
 45   2.8314  18988.50    -0.04   -4980.70    -0.07
 46   2.8315  18987.84     0.08   -4980.64    -0.03
 47   2.8315  18987.04     0.06   -4980.68    -0.08
 48   2.9133  16898.76     0.11   -5022.34     0.09
 49   2.9133  16897.81     0.15   -5022.59    -0.10
 50   2.9134  16896.77     0.08   -5022.66    -0.10
 51   2.9134  16895.88     0.17   -5022.72    -0.10
 52   3.0088  14349.77    -0.03   -5306.24    -0.05
 53   3.0089  14348.87    -0.09   -5306.43    -0.08
 54   3.0089  14348.05    -0.06   -5306.51    -0.01
 55   3.0089  14347.37     0.11   -5306.65     0.00
 56   3.1100  12647.97     0.12   -5822.56     0.17
 57   3.1101  12647.50    -0.04   -5822.83     0.11
 58   3.1101  12647.26     0.05   -5823.06     0.08
 59   3.1127  12625.30     0.01   -5838.17     0.08
 60   3.1128  12624.95    -0.04   -5838.34     0.12
 61   3.1128  12624.70     0.02   -5838.50     0.18
 62   3.1128  12624.46     0.08   -5838.79     0.10
 63   4.9147  26835.17 (   0.77)  -8613.70 (   0.06)
 64   4.9147  26833.52    -0.02   -8613.86    -0.04
 65   4.9148  26831.77    -0.05   -8614.16    -0.22

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.

14GW53    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        41.040    41.045    41.035
ecceobj         0.083     0.083     0.082
incobj         21.970    21.970    21.970
qmin           37.214    37.298    37.245
qmax           45.607    45.606    45.588
amean          41.315    41.320    41.310
amin           41.000    40.999    40.983
amax           41.659    41.659    41.657
emean           0.080     0.080     0.080
emin            0.067     0.067     0.066
emax            0.095     0.095     0.095
imean          20.610    20.610    20.611
imin           20.067    20.070    20.077
imax           21.180    21.175    21.178
excite_mean     0.361     0.361     0.361
fracstop        1.000     1.000     1.000
cjmean          2.915     2.915     2.915

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       179.4     179.7     179.4
kozaiamp        180.0     179.9     179.9