Orbit Fit and Astrometric record for 160147

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: 160147    
# Created Mon Dec 11 02:36:40 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   39 observations of   40
# Arc:   6.89y
# First observation: 2001/05/22
#  Last observation: 2008/04/13
# Chi-squared of fit:   153.06 DOF:   72 RMS:  0.35
# Min/Max residuals:    -0.93    1.34
# Exact a, adot, b, bdot, g, gdot:
  1.633537E-05  2.566958E-02 -3.000138E-06 -4.853582E-04  2.519019E-02 -1.658276E-03
# Covariance matrix:
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.483615 -147.231829   -0.495743   -0.038684   -0.889286  2452052.488523
# Heliocentric elements and errors
Epoch:              2452052.5000  =  2001/05/23
Mean Anomaly:          326.05645 +/-     0.000
Argument of Peri:      286.59394 +/-     0.000
Long of Asc Node:      326.70496 +/-     0.000
Inclination:             2.64375 +/-     0.000
Eccentricity:         0.08389920 +/-    0.0000
Semi-Major Axis:     43.50635022 +/-    0.0000
Time of Perihelion: 2461935.3502 +/-       0.0
Perihelion:          39.85620244 +/-    0.0000
Aphelion:            47.15649799 +/-    0.0000
Period (y)              286.9705 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -33.82574723 +/-    0.0000
Ecliptic Y          -22.35981806 +/-    0.0000
Ecliptic Z           -1.72039595 +/-    0.0000
Ecliptic XDOT         0.00165496 +/-    0.0000
Ecliptic YDOT        -0.00224500 +/-    0.0000
Ecliptic ZDOT        -0.00004470 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.58454151 +/-    0.0000
Geocenter to KBO     39.69807217 +/-    0.0000
# Hcoef:  6.41

The following table shows the complete astrometric record for 160147. 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 (160147) followed by the observatory code and reference code for the source of the astrometry.

2001 05  22.98778  13 58 44.34   -14 45 52.7   22.7R 160147    807  Cd1817      
2001 05  23.08494  13 58 43.92   -14 45 50.8         160147    807  Cd1817      
2001 06  10.01326  13 57 41.01   -14 39 34.0   22.5R 160147    304  Cd1817      
2001 06  10.08764  13 57 40.86   -14 39 31.9         160147    304  Cd1817      
2002 04  06.23254  14 08 05.08   -15 36 47.7   21.8R 160147    807  Cf4617      
2002 04  06.36873  14 08 04.44   -15 36 44.6         160147    807  Cf4617      
2002 04  07.24921  14 08 00.42   -15 36 24.9         160147    807  Cf4617      
2002 04  08.26472  14 07 55.72   -15 36 02.2   21.2R 160147    807  Cf4617      
2002 04  09.21801  14 07 51.29   -15 35 40.6         160147    807  Cf4617      
2002 04  09.28159  14 07 50.99   -15 35 39.1         160147    807  Cf4617      
2002 04  09.39501  14 07 50.44   -15 35 36.6         160147    807  Cf4617      
2002 04  10.49319  14 07 45.32   -15 35 11.4   21.8R 160147    568  Cf4617      
2002 04  10.57182  14 07 44.97   -15 35 09.4         160147    568  Cf4617      
2002 05  11.96967  14 05 14.59   -15 22 14.6         160147    950  Cf4617      
2002 05  12.04612  14 05 14.20   -15 22 12.6         160147    950  Cf4617      
2002 05  12.09174  14 05 14.01   -15 22 11.4         160147    950  Cf4617      
2002 05  12.99888  14 05 09.85   -15 21 48.9         160147    950  Cf4617      
2002 05  13.07988  14 05 09.48   -15 21 47.0         160147    950  Cf4617      
2003 04  21.16925  14 12 41.12   -16 02 16.6   20.2R 160147    304  Ch8069      
2003 04  21.20666  14 12 40.94   -16 02 16.0         160147    304  Ch8069      
2004 05  11.37076  14 16 48.06   -16 24 35.0   22.6R 160147    568  Ck9562      
2004 05  11.47413  14 16 47.57   -16 24 32.5         160147    568  Ck9562      
2005 04  10.39062  14 25 10.90   -17 07 05.1   22.6R 160147    695  Cn3087      
2005 04  11.35628  14 25 06.44   -17 06 44.8         160147    695  Cn3087      
2005 04  11.43492  14 25 06.04   -17 06 43.0         160147    695  Cn3087      
2005 06  07.06677  14 20 46.06   -16 45 03.8   22.7R 160147    304  Cn6472      
2005 06  07.07650  14 20 46.02   -16 45 03.6         160147    304  Cn6472      
2006 04  26.22013  14 29 50.51   -17 31 03.1   21.4R 160147    807  Cr3558      
2006 04  26.30668  14 29 50.07   -17 31 01.0         160147    807  Cr3558      
2006 04  27.22572  14 29 45.52   -17 30 39.8         160147    807  Cr3558      
2006 06  21.03436  14 25 53.27   -17 10 49.8   22.6R 160147    304  Cr4812      
2006 06  21.11943  14 25 53.01   -17 10 48.6         160147    304  Cr4812      
2007 04  21.16501  14 36 14.05   -18 02 11.4         160147    807  Cv1520      
2007 04  21.29607  14 36 13.38   -18 02 08.3         160147    807  Cv1520      
2007 05  13.28340  14 34 24.52   -17 53 49.1   22.3R 160147    688  Cv0105      
2007 05  13.36174  14 34 24.24   -17 53 45.8         160147    688  Cv0105      
2008 04  13.32323  14 42 47.82   -18 33 02.7   23.3R 160147    250  S~06He      
2008 04  13.37948  14 42 47.56   -18 33 01.6         160147    250  S~06He      
2008 04  13.38573  14 42 47.53   -18 33 01.5         160147    250  S~06He      
2008 04  13.39198  14 42 47.50   -18 33 01.4         160147    250  S~06He      

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    -0.19       0.00     0.80
  2   0.0003      0.00    -0.10       0.00     0.17
  3   0.0494      0.00     1.21       0.00     0.68
  4   0.0496      0.00 (   2.31)      0.00 (   1.42)
  5   0.8713      0.00    -0.06       0.00    -0.38
  6   0.8717      0.00    -0.15       0.00    -0.29
  7   0.8741      0.00     0.09       0.00    -0.09
  8   0.8769      0.00     0.03       0.00    -0.12
  9   0.8795      0.00     0.04       0.00    -0.06
 10   0.8797      0.00     0.07       0.00    -0.01
 11   0.8800      0.00    -0.13       0.00    -0.11
 12   0.8830      0.00     0.10       0.00     0.18
 13   0.8832      0.00     0.49       0.00     0.36
 14   0.9691      0.00     0.15       0.00    -0.11
 15   0.9694      0.00    -0.34       0.00    -0.01
 16   0.9695      0.00    -0.00       0.00     0.05
 17   0.9720      0.00    -0.31       0.00     0.04
 18   0.9722      0.00    -0.22       0.00    -0.08
 19   1.9115      0.00     0.26       0.00    -0.06
 20   1.9116      0.00     0.33       0.00    -0.35
 21   2.9689      0.00    -0.34       0.00    -0.20
 22   2.9692      0.00    -0.23       0.00    -0.22
 23   3.8834      0.00    -0.28       0.00    -0.34
 24   3.8860      0.00     0.22       0.00    -0.31
 25   3.8862      0.00    -0.17       0.00    -0.17
 26   4.0413      0.00    -0.29       0.00    -0.10
 27   4.0413      0.00    -0.36       0.00    -0.10
 28   4.9260      0.00     0.20       0.00    -0.18
 29   4.9263      0.00     0.13       0.00    -0.07
 30   4.9288      0.00     0.06       0.00    -0.01
 31   5.0788      0.00     0.13       0.00     0.11
 32   5.0791      0.00    -0.16       0.00    -0.08
 33   5.9115      0.00     0.45       0.00    -0.57
 34   5.9119      0.00     0.16       0.00    -0.29
 35   5.9721      0.00    -0.28       0.00    -0.93
 36   5.9723      0.00     1.34       0.00     0.53
 37   6.8921      0.00    -0.05       0.00     0.43
 38   6.8922      0.00    -0.01       0.00     0.45
 39   6.8923      0.00    -0.02       0.00     0.43
 40   6.8923      0.00    -0.04       0.00     0.41

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.

160147    quality flag:2

Type:      CLASSICAL    7:4EEE CLASSICAL

axisobj        43.420    43.420    43.420
ecceobj         0.084     0.084     0.084
incobj          2.647     2.647     2.647
qmin           39.294    39.351    39.350
qmax           48.552    48.456    48.456
amean          43.727    43.725    43.726
amin           43.341    43.323    43.347
amax           44.141    44.128    44.144
emean           0.081     0.083     0.082
emin            0.060     0.069     0.063
emax            0.100     0.099     0.099
imean           3.892     3.837     3.842
imin            3.020     2.997     3.009
imax            4.646     4.616     4.617
excite_mean     0.106     0.107     0.106
fracstop        1.000     1.000     1.000
cjmean          3.085     3.084     3.085

libcent 0      -180.0     185.1    -180.0
libamp  0      -180.0     171.9    -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       171.6     175.7     180.2
kozaiamp        180.0     180.0     180.0