Orbit Fit and Astrometric record for 495297

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: 495297    
# Created Tue Dec 12 02:36:56 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   29 observations of   29
# Arc:  16.24y
# First observation: 2000/09/04
#  Last observation: 2016/11/30
# Chi-squared of fit:    29.72 DOF:   52 RMS:  0.18
# Min/Max residuals:    -0.40    0.35
# Exact a, adot, b, bdot, g, gdot:
  1.881917E-05  3.388626E-02 -1.821089E-06 -2.823661E-03  2.837137E-02 -3.194696E-04
# 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
    0.645751  -22.443639   -0.074560    0.011100   -1.001635  2451791.890593
# Heliocentric elements and errors
Epoch:              2451792.5000  =  2000/09/05
Mean Anomaly:          358.87673 +/-     0.000
Argument of Peri:      174.78481 +/-     0.000
Long of Asc Node:      165.18469 +/-     0.000
Inclination:             4.79864 +/-     0.000
Eccentricity:         0.32104630 +/-    0.0000
Semi-Major Axis:     53.38335451 +/-    0.0000
Time of Perihelion: 2452237.0187 +/-       0.0
Perihelion:          36.24482612 +/-    0.0000
Aphelion:            70.52188289 +/-    0.0000
Period (y)              390.0470 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           33.53507618 +/-    0.0000
Ecliptic Y          -13.76399709 +/-    0.0000
Ecliptic Z            0.39719006 +/-    0.0000
Ecliptic XDOT         0.00121542 +/-    0.0000
Ecliptic YDOT         0.00303818 +/-    0.0000
Ecliptic ZDOT        -0.00027266 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.25199558 +/-    0.0000
Geocenter to KBO     35.24683485 +/-    0.0000
# Hcoef:  6.85

The following table shows the complete astrometric record for 495297. 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 (495297) followed by the observatory code and reference code for the source of the astrometry.

2000 09  04.389850 22 36 00.44   -08 08 07.1         495297    645  C~1eOE      
2000 09  04.390683 22 36 00.43   -08 08 07.1         495297    645  C~1eOE      
2000 09  04.393171 22 36 00.42   -08 08 07.0         495297    645  C~1eOE      
2009 09  16.353008 23 41 43.35   -02 51 58.9   20.3V 495297    645  C~1eOE      
2009 09  16.353837 23 41 43.35   -02 51 58.9   19.7V 495297    645  C~1eOE      
2009 09  16.356325 23 41 43.34   -02 51 59.0   21.5V 495297    645  C~1eOE      
2013 10  13.097512 00 08 22.01   -00 39 54.3   21.5z 495297    W84  C~1eOE      
2013 10  13.114873 00 08 21.93   -00 39 54.9   21.7i 495297    W84  C~1eOE      
2013 11  08.140694 00 06 39.17   -00 51 07.5   22.1r 495297    W84  C~1eOE      
2013 11  22.069803 00 06 03.27   -00 54 53.5   22.5r 495297    W84  C~1eOE      
2013 11  22.071181 00 06 03.26   -00 54 53.5   22.2i 495297    W84  C~1eOE      
2013 11  23.095509 00 06 01.28   -00 55 05.6   22.4i 495297    W84  C~1eOE      
2014 10  28.195382 00 14 21.52   -00 10 48.9   22.5r 495297    W84  C~1eOE      
2014 11  14.101285 00 13 23.14   -00 17 01.9   22.2z 495297    W84  C~1eOE      
2014 11  15.101528 00 13 20.35   -00 17 19.5   21.9z 495297    W84  C~1eOE      
2014 11  17.029097 00 13 15.17   -00 17 51.9   21.5z 495297    W84  C~1eOE      
2015 09  30.144190 00 23 31.42   +00 39 18.6   22.3i 495297    W84  C~1eOE      
2015 09  30.223796 00 23 31.03   +00 39 16.3   21.7i 495297    W84  C~1eOE      
2015 10  10.309826 00 22 42.51   +00 33 50.6         495297    695  C~1eOE      
2015 10  10.386204 00 22 42.12   +00 33 48.1         495297    695  C~1eOE      
2015 10  11.208900 00 22 38.26   +00 33 22.2         495297    695  C~1eOE      
2015 10  11.215590 00 22 38.22   +00 33 22.0         495297    695  C~1eOE      
2016 09  09.332963 00 32 03.64   +01 25 41.3   22.9r 495297    W84  C~2Fa6      
2016 09  09.334340 00 32 03.62   +01 25 41.4   22.5i 495297    W84  C~2Fa6      
2016 09  10.269387 00 31 59.49   +01 25 12.2   21.7z 495297    W84  C~2Fa6      
2016 10  02.184387 00 30 16.20   +01 13 23.5   21.7i 495297    W84  C~2Fa6      
2016 11  30.101030 00 26 35.59   +00 49 57.1   22.4r 495297    W84  C~2Fa6      
2016 11  30.102396 00 26 35.58   +00 49 57.1   22.2i 495297    W84  C~2Fa6      
2016 11  30.103762 00 26 35.58   +00 49 57.0   23.4g 495297    W84  C~2Fa6      

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    -0.08       0.00    -0.40
  2   0.0000      0.00    -0.04       0.00     0.10
  3   0.0000      0.00     0.00       0.00     0.28
  4   9.0321      0.00     0.20       0.00    -0.40
  5   9.0321      0.00     0.26       0.00    -0.38
  6   9.0321      0.00     0.30       0.00    -0.39
  7  13.1053      0.00    -0.06       0.00     0.12
  8  13.1053      0.00    -0.05       0.00     0.04
  9  13.1766      0.00    -0.03       0.00     0.05
 10  13.2147      0.00     0.07       0.00     0.10
 11  13.2147      0.00    -0.03       0.00     0.12
 12  13.2175      0.00     0.03       0.00     0.15
 13  14.1459      0.00     0.00       0.00     0.18
 14  14.1922      0.00    -0.17       0.00     0.14
 15  14.1950      0.00     0.09       0.00     0.07
 16  14.2002      0.00     0.01       0.00    -0.14
 17  15.0685      0.00    -0.17       0.00    -0.19
 18  15.0687      0.00    -0.13       0.00     0.12
 19  15.0963      0.00     0.14       0.00     0.35
 20  15.0965      0.00    -0.18       0.00     0.26
 21  15.0988      0.00     0.18       0.00     0.28
 22  15.0988      0.00     0.07       0.00     0.29
 23  16.0135      0.00     0.27       0.00    -0.17
 24  16.0135      0.00     0.06       0.00    -0.03
 25  16.0161      0.00     0.10       0.00    -0.12
 26  16.0761      0.00     0.12       0.00     0.00
 27  16.2374      0.00     0.18       0.00    -0.07
 28  16.2374      0.00     0.06       0.00    -0.06
 29  16.2374      0.00     0.10       0.00    -0.15

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.

495297    quality flag:3

Type:        7:3EEEE   7:3EEEE   7:3EEEE

axisobj        53.558    53.558    53.558
ecceobj         0.323     0.323     0.323
incobj          4.796     4.796     4.796
qmin           35.741    35.741    35.741
qmax           71.433    71.433    71.432
amean          52.970    52.970    52.969
amin           52.234    52.234    52.235
amax           53.846    53.847    53.846
emean           0.314     0.314     0.314
emin            0.302     0.302     0.302
emax            0.327     0.327     0.327
imean           4.426     4.427     4.424
imin            4.114     4.113     4.116
imax            4.768     4.764     4.751
excite_mean     0.323     0.323     0.323
fracstop        1.000     1.000     1.000
cjmean          3.079     3.079     3.079

libcent 0       179.9     180.5     180.1
libamp  0       151.9     149.9     149.8
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       181.0     181.8     188.3
kozaiamp        179.9     180.0     180.0