Orbit Fit and Astrometric record for 14SW223

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: 14SW223   
# Created Sun Oct 22 01:38:28 2017
# Orbit generated from Bernstein formalism
# Fitting   50 observations of   51
# Arc:   2.09y
# First observation: 2013/08/09
#  Last observation: 2015/09/12
Preliminary a, adot, b, bdot, g, gdot:
  -0.016146   0.376942  -0.001969   0.050041   0.150368   0.000000
# Chi-squared of fit:    38.03 DOF:   94 RMS:  0.15
# Min/Max residuals:    -0.67    0.32
# Exact a, adot, b, bdot, g, gdot:
  3.784362E-05  3.539082E-01  4.660054E-06  4.887465E-02  1.481044E-01  3.598417E-02
# Covariance matrix:
  1.5483E-13 -1.7771E-13  4.8481E-15 -1.4926E-14  2.0953E-14 -1.4801E-13
 -1.7771E-13  4.4212E-13 -1.8107E-14  5.1847E-14  1.0639E-13  5.1326E-13
  4.8481E-15 -1.8107E-14  1.1102E-13 -8.4517E-14 -5.2722E-15 -2.5830E-14
 -1.4926E-14  5.1847E-14 -8.4517E-14  8.9593E-14  1.2422E-14  7.4582E-14
  2.0953E-14  1.0639E-13 -5.2722E-15  1.2422E-14  1.5761E-13  1.2234E-13
 -1.4801E-13  5.1326E-13 -2.5830E-14  7.4582E-14  1.2234E-13  7.3847E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -8.959094  -21.274108    0.380388   -0.146621   -0.930196  2456513.951118
# Heliocentric elements and errors
Epoch:              2456510.5000  =  2013/08/06
Mean Anomaly:           17.01741 +/-     0.001
Argument of Peri:      289.30138 +/-     0.001
Long of Asc Node:       22.61368 +/-     0.000
Inclination:            10.73066 +/-     0.000
Eccentricity:         0.15345831 +/-    0.0000
Semi-Major Axis:      8.98627442 +/-    0.0001
Time of Perihelion: 2456045.3866 +/-       0.0
Perihelion:           7.60725596 +/-    0.0001
Aphelion:            10.36529289 +/-    0.0001
Period (y)               26.9388 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X            6.95461532 +/-    0.0000
Ecliptic Y           -3.11333646 +/-    0.0000
Ecliptic Z           -1.05140625 +/-    0.0000
Ecliptic XDOT         0.00311096 +/-    0.0000
Ecliptic YDOT         0.00580616 +/-    0.0000
Ecliptic ZDOT         0.00078902 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO    7.69187839 +/-    0.0000
Geocenter to KBO      6.75199591 +/-    0.0000
# Hcoef: 13.04

The following table shows the complete astrometric record for 14SW223. 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 (14SW223) followed by the observatory code and reference code for the source of the astrometry.

2013 08  09.45034  22 55 19.478  -16 35 07.31  21.6w 14SW223   F51  C@0615      
2013 08  09.46460  22 55 19.220  -16 35 09.05  21.8w 14SW223   F51  C@0615      
2013 08  09.47883  22 55 18.958  -16 35 10.59  21.7w 14SW223   F51  C@0615      
2013 08  09.49307  22 55 18.669  -16 35 12.01  22.2w 14SW223   F51  C~1XRt      
2013 08  31.41178  22 47 53.724  -17 14 11.41  21.9w 14SW223   F51  C~1vXj      
2013 08  31.42628  22 47 53.399  -17 14 12.77  21.9w 14SW223   F51  C~1vXj      
2013 08  31.45521  22 47 52.755  -17 14 15.48  22.1w 14SW223   F51  C~1vXj      
2013 10  06.31804  22 36 18.207  -17 48 00.58  21.9w 14SW223   F51  C~1vXj      
2013 10  06.33229  22 36 18.003  -17 48 00.87  22.1w 14SW223   F51  C~1vXj      
2013 10  06.34654  22 36 17.780  -17 48 00.86  22.1w 14SW223   F51  C~1vXj      
2013 10  06.36079  22 36 17.567  -17 48 00.89  22.4w 14SW223   F51  C~1vXj      
2014 07  07.57582  00 05 54.616  -05 39 33.45  22.3w 14SW223   F51  C~1vXj      
2014 07  07.58465  00 05 54.631  -05 39 33.57  22.3w 14SW223   F51  C~1vXj      
2014 07  07.59344  00 05 54.659  -05 39 33.36  22.6w 14SW223   F51  C~1vXj      
2014 07  07.60227  00 05 54.695  -05 39 33.29  22.6w 14SW223   F51  C~1vXj      
2014 07  31.54148  00 04 56.263  -05 50 35.28  22.4w 14SW223   F51  C~1vXj      
2014 07  31.55344  00 04 56.169  -05 50 35.74  22.3w 14SW223   F51  C~1vXj      
2014 07  31.56541  00 04 56.066  -05 50 36.60  22.2w 14SW223   F51  C~1vXj      
2014 07  31.57742  00 04 55.966  -05 50 37.25  22.5w 14SW223   F51  C~1vXj      
2014 08  20.48317  00 01 00.503  -06 16 05.56  22.0w 14SW223   F51  C~1vXj      
2014 08  20.49535  00 01 00.302  -06 16 06.70  21.8w 14SW223   F51  C~1vXj      
2014 08  20.50752  00 01 00.100  -06 16 07.71  22.1w 14SW223   F51  C~1vXj      
2014 08  20.51970  00 00 59.912  -06 16 09.05  22.2w 14SW223   F51  C~1vXj      
2014 08  22.49332  00 00 28.743  -06 19 14.34  21.9w 14SW223   F51  C~1vXj      
2014 08  22.50560  00 00 28.541  -06 19 15.46  21.9w 14SW223   F51  C~1vXj      
2014 08  22.51787  00 00 28.348  -06 19 16.55  21.9w 14SW223   F51  C~1vXj      
2014 09  19.33732  23 51 37.111  -07 06 07.20  22.2w 14SW223   F51  C~1vXj      
2014 09  19.34877  23 51 36.851  -07 06 08.29  21.8w 14SW223   F51  C@0615      
2014 09  19.36020  23 51 36.618  -07 06 09.29  21.9w 14SW223   F51  C@0615      
2014 09  19.37167  23 51 36.375  -07 06 10.44  21.8w 14SW223   F51  C@0615      
2014 09  20.246812 23 51 18.18   -07 07 34.5   21.2R 14SW223   W86  C~19EU      
2014 09  20.250859 23 51 18.10   -07 07 34.8   21.5R 14SW223   W86  C~19EU      
2014 09  20.254876 23 51 18.00   -07 07 35.3   21.1R 14SW223   W86  C~19EU      
2014 09  20.259054 23 51 17.91   -07 07 35.7   21.6R 14SW223   W86  C~19EU      
2014 09  20.263078 23 51 17.82   -07 07 36.2   21.3R 14SW223   W86  C~19EU      
2014 09  25.27523  23 49 34.16   -07 15 27.7   21.4R 14SW223   291  C~19EU      
2014 09  25.30097  23 49 33.65   -07 15 30.5   22.2R 14SW223   291  C~19EU      
2014 09  25.32685  23 49 33.04   -07 15 32.6   21.5R 14SW223   291  C~19EU      
2014 10  25.31594  23 40 33.858  -07 46 11.66  22.1w 14SW223   F51  C~1vXj      
2014 10  25.34218  23 40 33.455  -07 46 12.47  21.7w 14SW223   F51  C~1vXj      
2014 10  25.35531  23 40 33.276  -07 46 12.54  22.1w 14SW223   F51  C~1vXj      
2014 10  28.10119  23 39 56.71   -07 47 09.3   21.9R 14SW223   G37  C~1CLc      
2014 10  28.11423  23 39 56.54   -07 47 09.6   21.9R 14SW223   G37  C~1CLc      
2014 10  29.15465  23 39 43.40   -07 47 25.2   22.0R 14SW223   G37  C~1CLc      
2014 10  29.15848  23 39 43.35   -07 47 25.3   22.0R 14SW223   G37  C~1CLc      
2015 09  11.46564  00 57 12.957  +03 32 17.02  21.9w 14SW223   F51  C~1XRt      
2015 09  11.47765  00 57 12.728  +03 32 15.81  22.3w 14SW223   F51  C~1XRt      
2015 09  11.48973  00 57 12.545  +03 32 14.98  22.0w 14SW223   F51  C~1XRt      
2015 09  12.47861  00 56 55.568  +03 30 55.38  22.3w 14SW223   F51  C~1XRt      
2015 09  12.49040  00 56 55.332  +03 30 54.04  22.0w 14SW223   F51  C~1XRt      
2015 09  12.50218  00 56 55.117  +03 30 52.97  22.2w 14SW223   F51  C~1XRu      

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    -0.01       0.00     0.12
  2   0.0000     -4.09     0.03      -0.17    -0.06
  3   0.0001     -8.16     0.10      -0.13    -0.04
  4   0.0001    -12.54    -0.15       0.16     0.25
  5   0.0601  -6809.76     0.17     280.71    -0.13
  6   0.0602  -6814.59     0.13     281.21    -0.07
  7   0.0602  -6824.17     0.10     282.19     0.02
  8   0.1584 -16836.45    -0.18    2093.27     0.11
  9   0.1585 -16839.29    -0.07    2094.06    -0.13
 10   0.1585 -16842.27    -0.11    2095.24     0.01
 11   0.1586 -16845.13    -0.03    2096.32     0.05
 12   0.9093  76238.43    -0.01   10080.83     0.11
 13   0.9093  76238.59    -0.22   10080.61     0.02
 14   0.9094  76239.12    -0.05   10080.61     0.15
 15   0.9094  76239.71     0.17   10080.43     0.09
 16   0.9749  75017.40    -0.10    9847.35    -0.32
 17   0.9750  75015.74     0.10    9847.55    -0.13
 18   0.9750  75013.75    -0.04    9847.44    -0.27
 19   0.9750  75011.91    -0.02    9847.50    -0.23
 20   1.0295  70705.22     0.16    9998.30    -0.06
 21   1.0296  70701.65     0.05    9998.58    -0.02
 22   1.0296  70698.13    -0.00    9998.99     0.15
 23   1.0296  70694.66    -0.01    9998.99    -0.10
 24   1.0350  70137.37    -0.15   10034.41     0.13
 25   1.0351  70133.80    -0.09   10034.71     0.17
 26   1.0351  70130.38     0.10   10034.98     0.17
 27   1.1113  60936.40     0.17   10934.33    -0.08
 28   1.1113  60932.10    -0.08   10935.03     0.07
 29   1.1113  60928.23     0.11   10935.63     0.12
 30   1.1114  60924.14     0.10   10936.15     0.09
 31   1.1137  60619.22     0.13   10977.29    -0.06
 32   1.1138  60617.91     0.25   10977.53    -0.01
 33   1.1138  60616.22    -0.02   10977.72    -0.02
 34   1.1138  60614.72    -0.04   10977.94    -0.01
 35   1.1138  60613.17    -0.17   10978.07    -0.08
 36   1.1275  58884.10    -0.08   11217.75     0.31
 37   1.1276  58875.39     0.16   11218.47    -0.34
 38   1.1277  58865.56    -0.67   11220.51     0.32
 39   1.2098  50269.80     0.30   12997.60    -0.05
 40   1.2098  50263.69    -0.16   12999.43    -0.04
 41   1.2099  50261.11     0.09   13000.51     0.14
 42   1.2174  49715.09     0.07   13181.86    -0.07
 43   1.2174  49712.54     0.06   13182.67    -0.15
 44   1.2203  49518.65    -0.03   13252.24    -0.12
 45   1.2203  49517.90    -0.07   13252.47    -0.16
 46   2.0890 149457.51     0.15   21785.21     0.16
 47   2.0891 149452.00    -0.41   21785.60     0.03
 48   2.0891 149447.70     0.28   21786.07    -0.04
 49   2.0918 149047.31 (   0.88)  21826.59 (   0.26)
 50   2.0918 149041.58     0.08   21826.89     0.03
 51   2.0919 149036.47    -0.11   21827.34    -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.

14SW223    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj         8.972     8.973     8.972
ecceobj         0.152     0.152     0.152
incobj         10.750    10.750    10.750
qmin            7.612     7.612     6.572
qmax           10.333    10.333    11.446
amean           8.972     8.972     9.049
amin            8.972     8.972     8.377
amax            8.972     8.972     9.889
emean           0.152     0.152     0.151
emin            0.152     0.152     0.104
emax            0.152     0.152     0.216
imean          10.729    10.729    12.120
imin           10.729    10.729     9.736
imax           10.729    10.729    14.632
excite_mean     0.240     0.240     0.261
fracstop        0.000     0.000     0.001
cjmean          4.413     4.413     4.391

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       290.4     290.4     165.4
kozaiamp          0.0       0.0     161.3