Orbit Fit and Astrometric record for 14US224

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: 14US224   
# Created Sat Dec 16 02:38:06 2017
# Orbit generated from Bernstein formalism
# Fitting   28 observations of   29
# Arc:   4.02y
# First observation: 2012/10/23
#  Last observation: 2016/10/30
Preliminary a, adot, b, bdot, g, gdot:
  -0.000047   0.020155  -0.000000   0.000653   0.022307   0.000000
# Chi-squared of fit:    18.10 DOF:   50 RMS:  0.14
# Min/Max residuals:    -0.48    0.36
# Exact a, adot, b, bdot, g, gdot:
  1.477188E-05  1.995576E-02  1.013989E-06  6.423599E-04  2.184652E-02 -2.270947E-03
# Covariance matrix:
  2.0934E-13 -1.5844E-13  1.3352E-15 -3.1681E-15 -7.4959E-14 -1.3062E-12
 -1.5844E-13  4.8398E-13 -1.8178E-15  1.5655E-14  7.3377E-13  5.8086E-12
  1.3352E-15 -1.8178E-15  1.6408E-13 -5.8478E-14  5.4895E-16 -2.4295E-14
 -3.1681E-15  1.5655E-14 -5.8478E-14  3.1044E-14  2.6393E-14  2.0021E-13
 -7.4959E-14  7.3377E-13  5.4895E-16  2.6393E-14  1.5118E-12  9.3049E-12
 -1.3062E-12  5.8086E-12 -2.4295E-14  2.0021E-13  9.3049E-12  7.4430E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   11.115888   38.565386    0.143735    0.189311   -0.963244  2456223.990478
# Heliocentric elements and errors
Epoch:              2456220.5000  =  2012/10/20
Mean Anomaly:          279.77868 +/-     0.084
Argument of Peri:      174.07169 +/-     0.064
Long of Asc Node:      318.17305 +/-     0.003
Inclination:            11.03996 +/-     0.000
Eccentricity:         0.11738356 +/-    0.0004
Semi-Major Axis:     47.03649723 +/-    0.0119
Time of Perihelion: 2482477.0824 +/-      25.5
Perihelion:          41.51518552 +/-    0.0230
Aphelion:            52.55780893 +/-    0.0244
Period (y)              322.5973 +/-      0.12
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           35.97745986 +/-    0.0020
Ecliptic Y           28.50287346 +/-    0.0016
Ecliptic Z            8.82495871 +/-    0.0005
Ecliptic XDOT        -0.00179556 +/-    0.0000
Ecliptic YDOT         0.00177375 +/-    0.0000
Ecliptic ZDOT         0.00002425 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   46.74046758 +/-    0.0018
Geocenter to KBO     45.77387498 +/-    0.0026
# Hcoef:  4.84

The following table shows the complete astrometric record for 14US224. 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 (14US224) followed by the observatory code and reference code for the source of the astrometry.

2012 10  23.48970  02 09 05.902  +24 50 52.26  21.5w 14US224   F51  C~2FaO      
2012 10  23.50482  02 09 05.837  +24 50 52.13  21.3w 14US224   F51  C~2FaO      
2012 10  23.50548  02 09 05.832  +24 50 52.02  21.5w 14US224   F51  C~2FaO      
2012 10  23.51994  02 09 05.759  +24 50 51.75  21.6w 14US224   F51  C~2FaO      
2012 10  23.52060  02 09 05.761  +24 50 51.79  21.3w 14US224   F51  C~2FaO      
2012 10  23.53511  02 09 05.691  +24 50 51.41  21.3w 14US224   F51  C~2FaO      
2012 10  23.53577  02 09 05.693  +24 50 51.37  21.4w 14US224   F51  C~2FaO      
2014 10  28.47966  02 18 13.485  +25 39 47.76  21.3w 14US224   F51  C~1vXn      
2014 10  28.49269  02 18 13.424  +25 39 47.16  21.6w 14US224   F51  C~1vXn      
2014 10  28.50572  02 18 13.362  +25 39 46.96  21.4w 14US224   F51  C~1vXn      
2014 10  28.51882  02 18 13.306  +25 39 46.79  21.4w 14US224   F51  C~1vXn      
2014 11  25.25706  02 16 08.090  +25 28 44.50  21.4w 14US224   F51  C~1vXn      
2014 11  25.26899  02 16 08.060  +25 28 44.08  21.4w 14US224   F51  C~1vXn      
2014 11  25.28084  02 16 08.009  +25 28 43.83  21.4w 14US224   F51  C~1vXn      
2014 11  25.29331  02 16 07.953  +25 28 43.44  21.5w 14US224   F51  C~1vXn      
2014 11  27.40123  02 15 59.373  +25 27 48.80  21.7w 14US224   F51  C~1vXn      
2014 11  27.41347  02 15 59.329  +25 27 48.46  21.8w 14US224   F51  C~1vXn      
2014 11  27.42572  02 15 59.277  +25 27 48.12  21.4w 14US224   F51  C~1vXn      
2014 11  27.43799  02 15 59.237  +25 27 47.97  21.5w 14US224   F51  C~1vXn      
2014 12  27.31230  02 14 26.638  +25 15 20.34  21.3i 14US224   F51  C~1vXn      
2014 12  27.32390  02 14 26.617  +25 15 19.80  21.4i 14US224   F51  C~1vXn      
2014 12  27.33549  02 14 26.570  +25 15 19.93  21.3i 14US224   F51  C~1vXn      
2014 12  27.34711  02 14 26.517  +25 15 19.68  21.4i 14US224   F51  C~1vXn      
2016 09  29.89994  02 29 57.62   +26 34 55.8   20.8R 14US224   461  C~21SX      
2016 09  29.93652  02 29 57.48   +26 34 55.4   21.0R 14US224   461  C~21SX      
2016 10  29.86815  02 27 44.73   +26 27 41.6   21.1R 14US224   104  C~20r4      
2016 10  30.02484  02 27 43.99   +26 27 38.5   20.8R 14US224   104  C~20r4      
2016 10  30.84324  02 27 40.10   +26 27 21.6   20.8R 14US224   104  C~20r4      
2016 10  30.94578  02 27 39.67   +26 27 18.8   20.8R 14US224   104  C~20r4      

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    -0.07       0.00    -0.11
  2   0.0000     -0.88     0.07       0.18     0.03
  3   0.0000     -0.98     0.01       0.10    -0.05
  4   0.0001     -2.00    -0.04       0.19     0.00
  5   0.0001     -1.96     0.04       0.22     0.03
  6   0.0001     -2.99    -0.01       0.19    -0.04
  7   0.0001     -2.98     0.04       0.14    -0.09
  8   2.0123   7986.53     0.04     279.10     0.14
  9   2.0123   7985.55    -0.05     278.81    -0.17
 10   2.0124   7984.69    -0.03     278.89    -0.10
 11   2.0124   7983.92     0.09     278.98    -0.03
 12   2.0883   6163.96    -0.17     210.13     0.19
 13   2.0884   6163.44     0.04     209.87    -0.01
 14   2.0884   6162.70     0.04     209.86     0.05
 15   2.0884   6161.86    -0.03     209.74    -0.00
 16   2.0942   6034.02     0.02     196.58     0.04
 17   2.0942   6033.35     0.09     196.45    -0.01
 18   2.0943   6032.57     0.06     196.37    -0.02
 19   2.0943   6032.01     0.25     196.40     0.10
 20   2.1761   4598.86     0.10     -92.08     0.01
 21   2.1761   4598.41     0.05     -92.49    -0.26
 22   2.1762   4597.86    -0.11     -92.16     0.21
 23   2.1762   4597.10    -0.48     -92.15     0.36
 24   3.9354  18070.82    -0.20     420.34     0.21
 25   3.9355  18068.89    -0.19     420.53     0.09
 26   4.0175  16227.47     0.04     555.72    -0.08
 27   4.0179  16217.00     0.26     555.85    -0.10
 28   4.0201  16161.75     0.14     555.94    -0.37
 29   4.0204  16155.36 (   0.74)    555.06 (  -1.33)

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.

14US224    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        47.160    47.193    47.127
ecceobj         0.115     0.116     0.114
incobj         11.034    11.034    11.034
qmin           40.524    40.560    40.572
qmax           53.361    53.416    53.279
amean          46.797    46.829    46.766
amin           46.412    46.428    46.374
amax           47.233    47.261    47.197
emean           0.118     0.119     0.117
emin            0.107     0.107     0.106
emax            0.131     0.131     0.130
imean          12.278    12.277    12.278
imin           11.894    11.887    11.896
imax           12.611    12.609    12.608
excite_mean     0.243     0.244     0.243
fracstop        1.000     1.000     1.000
cjmean          3.062     3.062     3.062

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       180.5     180.3     180.3
kozaiamp        180.0     180.0     179.9