Orbit Fit and Astrometric record for 503883

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: 503883    
# Created Fri Dec 15 02:36:52 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   51 observations of   51
# Arc:  17.01y
# First observation: 2000/08/26
#  Last observation: 2017/08/30
# Chi-squared of fit:    47.04 DOF:   96 RMS:  0.17
# Min/Max residuals:    -1.03    0.61
# Exact a, adot, b, bdot, g, gdot:
  1.720305E-05  3.295725E-02 -2.814497E-06 -1.516432E-03  2.927604E-02 -6.172059E-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
   -0.443878  -13.544667    0.235961   -0.007750   -0.979468  2451782.719823
# Heliocentric elements and errors
Epoch:              2451782.5000  =  2000/08/26
Mean Anomaly:          323.35643 +/-     0.000
Argument of Peri:      248.90920 +/-     0.000
Long of Asc Node:      156.77993 +/-     0.000
Inclination:             2.66880 +/-     0.000
Eccentricity:         0.25729565 +/-    0.0000
Semi-Major Axis:     42.53379560 +/-    0.0000
Time of Perihelion: 2462095.7343 +/-       0.0
Perihelion:          31.59003518 +/-    0.0000
Aphelion:            53.47755601 +/-    0.0000
Period (y)              277.4019 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           34.10936891 +/-    0.0000
Ecliptic Y           -8.45349354 +/-    0.0000
Ecliptic Z           -0.26473166 +/-    0.0000
Ecliptic XDOT         0.00015235 +/-    0.0000
Ecliptic YDOT         0.00313714 +/-    0.0000
Ecliptic ZDOT        -0.00013719 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.14241099 +/-    0.0000
Geocenter to KBO     34.15777101 +/-    0.0000
# Hcoef:  7.90

The following table shows the complete astrometric record for 503883. 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 (503883) followed by the observatory code and reference code for the source of the astrometry.

2000 08  26.21908  23 10 50.37   -05 45 16.1   22.6R 503883    807  C~1x6f      
2000 08  26.27600  23 10 50.08   -05 45 17.8         503883    807  C~1x6f      
2001 08  19.23948  23 18 35.72   -05 01 44.5   21.5R 503883    807  Ch1434      
2001 08  19.32335  23 18 35.31   -05 01 47.1         503883    807  Ch1434      
2001 10  20.24162  23 13 35.65   -05 34 13.7   22.8R 503883    695  Ch1434      
2001 10  20.30161  23 13 35.41   -05 34 15.2         503883    695  Ch1434      
2001 10  21.12919  23 13 32.37   -05 34 34.5         503883    695  Ch1434      
2013 08  05.48926  00 51 00.416  +03 46 51.07  22.9r 503883    568  C~2NIg      
2013 08  05.53771  00 51 00.319  +03 46 50.42  23.0r 503883    568  C~2NIg      
2013 08  08.46817  00 50 54.067  +03 46 00.39  23.2r 503883    568  C~2NIg      
2013 08  08.50699  00 50 53.969  +03 45 59.78  23.1r 503883    568  C~2NIg      
2013 08  31.55306  00 49 37.502  +03 36 44.48  22.7r 503883    568  C~2NIg      
2013 09  01.43879  00 49 33.722  +03 36 18.15  23.0r 503883    568  C~2NIg      
2013 09  01.47776  00 49 33.553  +03 36 17.01  22.8r 503883    568  C~2NIg      
2013 09  29.34928  00 47 13.540  +03 20 37.22  22.8r 503883    568  C~2Gdn      
2013 09  29.38812  00 47 13.323  +03 20 35.81  22.6r 503883    568  C~2Gdn      
2013 09  29.43193  00 47 13.075  +03 20 34.26  22.7r 503883    568  C~2Gdn      
2013 10  02.42297  00 46 56.599  +03 18 46.60  22.4r 503883    568  C~2NIg      
2013 10  04.51453  00 46 45.016  +03 17 31.24  22.7r 503883    568  C~2NIg      
2013 10  04.52297  00 46 44.974  +03 17 31.03  22.7r 503883    568  C~2NIg      
2013 10  04.52783  00 46 44.941  +03 17 30.75  22.8r 503883    568  C~2NIg      
2013 10  09.48085  00 46 17.530  +03 14 33.46  22.0r 503883    568  C~2NIg      
2013 10  11.213935 00 46 07.98   +03 13 32.2   23.8g 503883    W84  C~1x6f      
2013 11  27.27517  00 42 38.120  +02 51 55.58  22.9r 503883    568  C~2NIg      
2013 11  27.32692  00 42 37.973  +02 51 54.77  22.9r 503883    568  C~2NIg      
2013 12  05.33035  00 42 19.453  +02 50 12.68  22.9r 503883    568  C~2NIg      
2013 12  06.19916  00 42 17.867  +02 50 04.32  23.1r 503883    568  C~2NIg      
2014 07  23.55193  00 59 20.865  +04 34 48.14  23.3r 503883    568  C~2NIg      
2014 07  27.53111  00 59 18.587  +04 34 17.93  23.0r 503883    568  C~2NIg      
2014 08  22.54026  00 58 23.294  +04 26 57.35  22.8r 503883    568  C~2NIg      
2014 08  23.46764  00 58 20.144  +04 26 34.61  24.5u 503883    568  C~2NIg      
2014 08  27.61513  00 58 05.085  +04 24 47.62  22.9r 503883    568  C~2NIg      
2014 10  02.263657 00 55 11.76   +04 05 26.4   23.4g 503883    W84  C~1x6f      
2014 10  21.210324 00 53 27.08   +03 54 18.6   23.1r 503883    W84  C~1x6f      
2014 10  21.232303 00 53 26.95   +03 54 17.7   22.6i 503883    W84  C~1x6f      
2014 10  23.29554  00 53 15.931  +03 53 08.10  22.6r 503883    568  C~2NIg      
2014 10  27.26220  00 52 55.078  +03 50 58.11  22.7r 503883    568  C~2NIg      
2014 10  29.200799 00 52 45.11   +03 49 56.9   22.8r 503883    W84  C~1x6f      
2014 10  29.202187 00 52 45.10   +03 49 56.8   22.4i 503883    W84  C~1x6f      
2014 11  13.072176 00 51 35.56   +03 42 52.4   23.0i 503883    W84  C~1x6f      
2014 11  13.082164 00 51 35.51   +03 42 52.4   23.0r 503883    W84  C~1x6f      
2014 11  14.068762 00 51 31.41   +03 42 28.0   22.5z 503883    W84  C~1x6f      
2014 11  17.055926 00 51 19.45   +03 41 16.8   22.8z 503883    W84  C~1x6f      
2014 11  24.25164  00 50 53.679  +03 38 45.85  23.2r 503883    568  C~2NIg      
2014 11  25.24784  00 50 50.478  +03 38 27.38  22.8r 503883    568  C~2NIg      
2014 12  17.32730  00 50 05.456  +03 34 32.20  23.0r 503883    568  C~2NIg      
2015 01  18.23045  00 50 38.579  +03 39 22.19  22.6r 503883    568  C~2NIg      
2015 12  05.055104 00 58 33.40   +04 21 55.0   22.6z 503883    W84  C~1x6f      
2017 08  25.51775  01 23 08.605  +06 43 08.56  23.2w 503883    568  C~2NIg      
2017 08  30.45989  01 22 52.079  +06 41 11.85  22.9w 503883    568  C~2NIg      
2017 08  30.50665  01 22 51.906  +06 41 10.68  22.9w 503883    568  C~2NIg      

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    -0.15       0.00    -1.03
  2   0.0002      0.00     0.03       0.00     0.61
  3   0.9802      0.00    -0.14       0.00    -0.14
  4   0.9804      0.00    -0.24       0.00    -0.11
  5   1.1500      0.00     0.30       0.00    -0.22
  6   1.1501      0.00     0.13       0.00    -0.29
  7   1.1524      0.00     0.18       0.00    -0.08
  8  12.9426      0.00     0.13       0.00    -0.09
  9  12.9427      0.00     0.18       0.00     0.03
 10  12.9507      0.00     0.09       0.00    -0.10
 11  12.9508      0.00    -0.00       0.00    -0.02
 12  13.0139      0.00     0.14       0.00    -0.08
 13  13.0163      0.00     0.06       0.00    -0.11
 14  13.0165      0.00     0.11       0.00    -0.09
 15  13.0928      0.00     0.13       0.00     0.05
 16  13.0929      0.00     0.13       0.00     0.03
 17  13.0930      0.00     0.09       0.00     0.06
 18  13.1012      0.00     0.12       0.00     0.03
 19  13.1069      0.00     0.06       0.00    -0.07
 20  13.1069      0.00     0.14       0.00     0.02
 21  13.1069      0.00     0.06       0.00    -0.08
 22  13.1205      0.00     0.01       0.00    -0.04
 23  13.1252      0.00     0.05       0.00    -0.03
 24  13.2541      0.00     0.07       0.00    -0.04
 25  13.2542      0.00     0.06       0.00    -0.05
 26  13.2761      0.00     0.01       0.00    -0.08
 27  13.2785      0.00     0.07       0.00    -0.05
 28  13.9065      0.00     0.14       0.00     0.05
 29  13.9173      0.00    -0.03       0.00    -0.09
 30  13.9886      0.00     0.05       0.00    -0.07
 31  13.9911      0.00     0.14       0.00    -0.04
 32  14.0025      0.00     0.04       0.00    -0.05
 33  14.1001      0.00    -0.25       0.00     0.20
 34  14.1519      0.00    -0.07       0.00     0.18
 35  14.1520      0.00    -0.21       0.00     0.03
 36  14.1576      0.00     0.13       0.00    -0.04
 37  14.1685      0.00     0.02       0.00    -0.06
 38  14.1738      0.00     0.12       0.00     0.25
 39  14.1738      0.00     0.08       0.00     0.19
 40  14.2145      0.00     0.14       0.00    -0.03
 41  14.2145      0.00     0.03       0.00     0.22
 42  14.2172      0.00     0.04       0.00     0.35
 43  14.2254      0.00     0.11       0.00     0.25
 44  14.2451      0.00     0.04       0.00    -0.02
 45  14.2479      0.00     0.05       0.00    -0.12
 46  14.3083      0.00    -0.06       0.00    -0.01
 47  14.3957      0.00    -0.01       0.00    -0.13
 48  15.2740      0.00    -0.19       0.00     0.21
 49  16.9974      0.00     0.05       0.00     0.10
 50  17.0109      0.00     0.05       0.00     0.07
 51  17.0111      0.00     0.02       0.00     0.06

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.

503883    quality flag:3

Type:          5:3EE     5:3EE     5:3EE

axisobj        42.617    42.617    42.617
ecceobj         0.258     0.258     0.258
incobj          2.668     2.668     2.668
qmin           31.211    31.211    31.210
qmax           54.051    54.057    54.048
amean          42.327    42.327    42.327
amin           41.859    41.859    41.866
amax           42.873    42.874    42.874
emean           0.248     0.248     0.248
emin            0.235     0.234     0.234
emax            0.261     0.261     0.261
imean           2.842     2.845     2.837
imin            1.999     1.999     1.999
imax            3.397     3.425     3.378
excite_mean     0.253     0.253     0.253
fracstop        1.000     1.000     1.000
cjmean          3.006     3.006     3.006

libcent 0       180.3     180.4     179.7
libamp  0        77.2      77.8      77.3
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       194.5     194.8     194.2
kozaiamp         51.9      51.2      52.3