Orbit Fit and Astrometric record for 13HV156

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: 13HV156   
# Created Tue Dec 12 02:37:57 2017
# Orbit generated from Bernstein formalism
# Fitting   47 observations of   47
# Arc:   3.06y
# First observation: 2012/06/13
#  Last observation: 2015/07/07
Preliminary a, adot, b, bdot, g, gdot:
  -0.000246   0.018400  -0.000008   0.001659   0.021310   0.000000
# Chi-squared of fit:    22.25 DOF:   88 RMS:  0.12
# Min/Max residuals:    -0.31    0.36
# Exact a, adot, b, bdot, g, gdot:
  1.358626E-05  1.819618E-02  7.824139E-07  1.627732E-03  2.092038E-02 -3.356304E-03
# Covariance matrix:
  3.3169E-13 -3.1889E-13  9.5654E-15 -2.0382E-14 -1.9932E-13 -3.9053E-12
 -3.1889E-13  4.1722E-13 -1.5563E-14  3.0306E-14  2.6089E-13  6.2196E-12
  9.5654E-15 -1.5563E-14  1.6334E-13 -7.4553E-14 -8.8414E-15 -2.6746E-13
 -2.0382E-14  3.0306E-14 -7.4553E-14  4.3380E-14  2.3016E-14  4.9032E-13
 -1.9932E-13  2.6089E-13 -8.8414E-15  2.3016E-14  2.7699E-13  3.8059E-12
 -3.9053E-12  6.2196E-12 -2.6746E-13  4.9032E-13  3.8059E-12  1.0546E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
   17.821995 -117.768139   -0.351253    0.292379   -0.909573  2456091.836656
# Heliocentric elements and errors
Epoch:              2456090.5000  =  2012/06/12
Mean Anomaly:          269.59760 +/-     0.086
Argument of Peri:      185.03840 +/-     0.059
Long of Asc Node:      168.69171 +/-     0.002
Inclination:            18.13982 +/-     0.000
Eccentricity:         0.17754801 +/-    0.0005
Semi-Major Axis:     47.19604375 +/-    0.0096
Time of Perihelion: 2485830.0431 +/-      26.9
Perihelion:          38.81647996 +/-    0.0249
Aphelion:            55.57560755 +/-    0.0262
Period (y)              324.2400 +/-      0.10
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -21.33249781 +/-    0.0005
Ecliptic Y          -41.27328284 +/-    0.0010
Ecliptic Z           14.62988376 +/-    0.0004
Ecliptic XDOT         0.00232707 +/-    0.0000
Ecliptic YDOT        -0.00067848 +/-    0.0000
Ecliptic ZDOT         0.00006847 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   48.70926850 +/-    0.0009
Geocenter to KBO     47.80029021 +/-    0.0012
# Hcoef:  5.18

The following table shows the complete astrometric record for 13HV156. 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 (13HV156) followed by the observatory code and reference code for the source of the astrometry.

2012 06  13.33589  16 14 30.803  -03 06 40.24  21.9w 13HV156   F51  C~1vWy      
2012 06  13.35064  16 14 30.749  -03 06 40.27  21.8w 13HV156   F51  C~1vWy      
2012 06  13.36539  16 14 30.676  -03 06 40.20  22.0w 13HV156   F51  C~1vWy      
2012 06  13.38012  16 14 30.623  -03 06 40.20  21.9w 13HV156   F51  C~1vWy      
2013 04  19.52014  16 22 15.317  -03 26 02.94  22.2w 13HV156   F51  C~1vWy      
2013 04  19.53299  16 22 15.278  -03 26 02.58  22.0w 13HV156   F51  C~1vWy      
2013 04  19.54654  16 22 15.239  -03 26 02.33  22.2w 13HV156   F51  C~1vWy      
2013 04  19.55942  16 22 15.184  -03 26 01.75  22.5w 13HV156   F51  C~1vWy      
2013 05  15.50170  16 20 40.620  -03 17 39.82  22.2w 13HV156   F51  C~1vWy      
2013 05  15.51498  16 20 40.567  -03 17 39.51  22.2w 13HV156   F51  C~1vWy      
2013 05  15.52824  16 20 40.515  -03 17 39.23  22.2w 13HV156   F51  C~1vWy      
2013 05  15.54152  16 20 40.466  -03 17 39.29  22.0w 13HV156   F51  C~1vWy      
2013 06  18.34126  16 18 22.915  -03 12 29.67  21.5i 13HV156   F51  C~1vWy      
2013 06  18.36342  16 18 22.824  -03 12 29.71  21.9r 13HV156   F51  C~1vWy      
2013 06  18.37359  16 18 22.779  -03 12 29.47  21.7r 13HV156   F51  C~1vWy      
2014 05  07.44590  16 25 26.302  -03 26 03.83  22.0w 13HV156   F51  C~1vWy      
2014 05  07.45812  16 25 26.255  -03 26 03.80  22.0w 13HV156   F51  C~1vWy      
2014 05  07.47032  16 25 26.208  -03 26 03.53  21.9w 13HV156   F51  C~1vWy      
2014 05  07.48256  16 25 26.156  -03 26 03.30  22.0w 13HV156   F51  C~1vWy      
2014 06  02.36081  16 23 40.880  -03 20 05.60  22.1w 13HV156   F51  C~1vWy      
2014 06  02.37204  16 23 40.831  -03 20 05.52  22.1w 13HV156   F51  C~1vWy      
2014 06  02.38329  16 23 40.785  -03 20 05.43  21.8w 13HV156   F51  C~1vWy      
2014 06  02.39456  16 23 40.739  -03 20 05.41  21.9w 13HV156   F51  C~1vWy      
2014 07  29.31533  16 20 34.539  -03 22 56.93  22.2w 13HV156   F51  C~1vWy      
2014 07  29.32741  16 20 34.526  -03 22 56.78  21.9w 13HV156   F51  C~1vWy      
2014 07  29.33950  16 20 34.490  -03 22 57.06  22.1w 13HV156   F51  C~1vWy      
2014 07  29.35156  16 20 34.482  -03 22 57.32  22.1w 13HV156   F51  C~1vWy      
2014 07  30.33886  16 20 32.780  -03 23 11.79  22.0w 13HV156   F51  C~1vWy      
2014 07  30.35083  16 20 32.754  -03 23 11.97  22.0w 13HV156   F51  C~1vWy      
2014 07  30.36277  16 20 32.734  -03 23 12.36  22.1w 13HV156   F51  C~1vWy      
2014 07  30.37472  16 20 32.697  -03 23 12.56  22.1w 13HV156   F51  C~1vWy      
2014 08  18.25384  16 20 14.201  -03 28 52.12  22.2w 13HV156   F51  C~1vWy      
2014 08  18.26595  16 20 14.209  -03 28 52.59  22.2w 13HV156   F51  C~1vWy      
2014 08  18.27808  16 20 14.195  -03 28 52.82  22.1w 13HV156   F51  C~1vWy      
2014 08  18.29012  16 20 14.190  -03 28 52.72  22.0w 13HV156   F51  C~1vWy      
2014 08  19.25285  16 20 13.973  -03 29 12.99  22.2w 13HV156   F51  C~1vWy      
2014 08  19.26483  16 20 13.986  -03 29 12.96  22.2w 13HV156   F51  C~1vWy      
2014 08  19.27684  16 20 13.996  -03 29 13.32  22.0w 13HV156   F51  C~1vWy      
2014 08  19.28886  16 20 14.010  -03 29 13.71  22.1w 13HV156   F51  C~1vWy      
2015 06  07.43005  16 27 35.737  -03 25 31.25  21.6i 13HV156   F51  C~1vWy      
2015 06  07.44167  16 27 35.659  -03 25 31.29  21.7i 13HV156   F51  C~1vWy      
2015 06  07.45327  16 27 35.631  -03 25 31.02  21.6i 13HV156   F51  C~1vWy      
2015 06  07.46488  16 27 35.580  -03 25 30.97  21.4i 13HV156   F51  C~1vWy      
2015 07  07.27153  16 25 43.354  -03 25 11.89  21.9w 13HV156   F51  C~1vWy      
2015 07  07.28220  16 25 43.321  -03 25 12.01  22.1w 13HV156   F51  C~1vWy      
2015 07  07.29278  16 25 43.288  -03 25 11.93  22.0w 13HV156   F51  C~1vWy      
2015 07  07.30347  16 25 43.255  -03 25 12.14  21.8w 13HV156   F51  C~1vWy      

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     0.03       0.00     0.09
  2   0.0000     -0.79     0.12      -0.18     0.01
  3   0.0001     -1.88    -0.09      -0.31    -0.02
  4   0.0001     -2.66     0.01      -0.46    -0.06
  5   0.8492   7054.16     0.12     141.94    -0.18
  6   0.8493   7053.52     0.14     142.18    -0.11
  7   0.8493   7052.90     0.21     142.32    -0.15
  8   0.8493   7051.98    -0.06     142.74     0.10
  9   0.9204   5566.41    -0.07     375.77     0.01
 10   0.9204   5565.58    -0.06     375.93     0.11
 11   0.9204   5564.76    -0.04     376.06     0.19
 12   0.9205   5564.05     0.09     375.86    -0.06
 13   1.0130   3481.31    -0.06     300.26    -0.03
 14   1.0131   3479.98    -0.11     299.97    -0.13
 15   1.0131   3479.27    -0.23     300.08     0.07
 16   1.8976   9870.30    -0.07     665.82     0.09
 17   1.8977   9869.60    -0.03     665.72    -0.10
 18   1.8977   9868.86    -0.03     665.86    -0.05
 19   1.8977   9868.05    -0.10     665.95    -0.05
 20   1.9686   8249.68    -0.04     728.81    -0.01
 21   1.9686   8248.95    -0.06     728.76    -0.03
 22   1.9686   8248.25    -0.03     728.72    -0.04
 23   1.9687   8247.57     0.01     728.61    -0.11
 24   2.1245   5535.27     0.01      47.19    -0.11
 25   2.1245   5535.05     0.08      47.31     0.23
 26   2.1246   5534.57    -0.11      46.93     0.09
 27   2.1246   5534.50     0.12      46.65     0.05
 28   2.1273   5512.10     0.10      27.73     0.15
 29   2.1274   5511.75     0.03      27.48     0.13
 30   2.1274   5511.53     0.08      27.04    -0.07
 31   2.1274   5511.02    -0.15      26.75    -0.14
 32   2.1791   5301.21    -0.05    -358.14     0.02
 33   2.1791   5301.41     0.17    -358.58    -0.16
 34   2.1792   5301.25     0.01    -358.84    -0.17
 35   2.1792   5301.16    -0.07    -358.76     0.17
 36   2.1818   5301.70    -0.31    -379.29    -0.04
 37   2.1819   5301.88    -0.12    -379.22     0.28
 38   2.1819   5302.10     0.08    -379.55     0.21
 39   2.1819   5302.37     0.36    -379.89     0.12
 40   2.9818  11775.09     0.26    1052.60    -0.09
 41   2.9818  11773.95    -0.15    1052.35    -0.29
 42   2.9818  11773.48     0.12    1052.54    -0.05
 43   2.9819  11772.72     0.10    1052.45    -0.09
 44   3.0635  10112.39    -0.10     763.72     0.06
 45   3.0635  10111.93    -0.06     763.51     0.00
 46   3.0635  10111.42    -0.06     763.50     0.15
 47   3.0636  10110.98    -0.01     763.20     0.01

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.

13HV156    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        47.113    47.140    47.087
ecceobj         0.180     0.181     0.178
incobj         18.159    18.158    18.159
qmin           37.553    37.437    37.678
qmax           57.787    58.123    57.588
amean          47.418    47.448    47.393
amin           46.982    47.005    46.959
amax           47.970    48.010    47.925
emean           0.186     0.188     0.184
emin            0.167     0.168     0.166
emax            0.206     0.211     0.203
imean          17.456    17.434    17.460
imin           16.882    16.843    16.934
imax           18.028    18.077    18.025
excite_mean     0.353     0.354     0.352
fracstop        1.000     1.000     1.000
cjmean          2.988     2.987     2.988

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       181.7     190.7     180.8
kozaiamp        180.0     179.9     179.9