Orbit Fit and Astrometric record for 508792

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: 508792    
# Created Fri Feb 22 02:07:10 2019
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   64 observations of   64
# Arc:  17.16y
# First observation: 2000/03/31
#  Last observation: 2017/05/28
# Chi-squared of fit:   123.15 DOF:  122 RMS:  0.25
# Min/Max residuals:    -0.73    1.40
# Exact a, adot, b, bdot, g, gdot:
  1.731682E-05  2.828333E-02  5.454105E-06  2.305290E-03  2.661159E-02 -1.943381E-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
    0.254027  177.812067   -0.231541    0.004129   -0.979353  2451634.913763
# Heliocentric elements and errors
Epoch:              2451634.5000  =  2000/03/31
Mean Anomaly:          334.89957 +/-     0.000
Argument of Peri:       35.23759 +/-     0.000
Long of Asc Node:      175.11815 +/-     0.000
Inclination:             4.67477 +/-     0.000
Eccentricity:         0.12566720 +/-    0.0000
Semi-Major Axis:     43.33527251 +/-    0.0000
Time of Perihelion: 2458899.5619 +/-       0.0
Perihelion:          37.88945027 +/-    0.0000
Aphelion:            48.78109476 +/-    0.0000
Period (y)              285.2795 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -38.53073949 +/-    0.0000
Ecliptic Y            1.24339722 +/-    0.0000
Ecliptic Z            0.16682464 +/-    0.0000
Ecliptic XDOT         0.00008361 +/-    0.0000
Ecliptic YDOT        -0.00290867 +/-    0.0000
Ecliptic ZDOT         0.00023640 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.55119575 +/-    0.0000
Geocenter to KBO     37.57769576 +/-    0.0000
# Hcoef:  7.87

The following table shows the complete astrometric record for 508792. 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 (508792) followed by the observatory code and reference code for the source of the astrometry.

2000 03  31.41302  11 52 22.43   +01 06 11.6   23.6R 508792    568  Cb4248      
2000 03  31.45020  11 52 22.26   +01 06 13.4   23.6R 508792    568  Cb4248      
2000 03  31.48479  11 52 22.08   +01 06 14.0   23.6R 508792    568  Cb4248      
2000 04  04.41690  11 52 04.07   +01 08 16.9   23.6R 508792    568  Cb4248      
2000 04  04.48137  11 52 03.77   +01 08 19.2   23.6R 508792    568  Cb4248      
2000 05  07.25056  11 50 00.66   +01 22 16.9   24.2R 508792    568  Cb5724      
2000 05  07.29818  11 50 00.54   +01 22 17.9   24.0R 508792    568  Cb5724      
2001 02  17.50440  12 01 44.73   +00 12 50.1   23.3R 508792    568  Cc6644      
2001 02  17.55741  12 01 44.51   +00 12 51.8   23.7R 508792    568  Cc6644      
2001 02  18.55192  12 01 40.61   +00 13 18.9         508792    568  Cc6644      
2002 03  13.41443  12 06 11.67   -00 06 46.5         508792    696  Cf4567      
2002 03  13.46461  12 06 11.46   -00 06 44.8         508792    696  Cf4567      
2006 05  01.31944  12 27 28.54   -01 49 14.1   22.9R 508792    695  Cr3551      
2006 05  02.25247  12 27 24.97   -01 48 50.5         508792    695  Cr3551      
2006 05  02.36868  12 27 24.55   -01 48 47.8         508792    695  Cr3551      
2006 06  22.01237  12 25 49.33   -01 38 40.7   23.3R 508792    304  Cr4808      
2006 06  22.04313  12 25 49.34   -01 38 41.0         508792    304  Cr4808      
2007 02  15.30015  12 39 13.60   -02 58 05.7         508792    304  Cu1412      
2007 02  15.34176  12 39 13.47   -02 58 04.6         508792    304  Cu1412      
2015 02  17.57630  13 29 44.936  -07 04 36.95  23.6r 508792    568  C~2mm2      
2015 02  17.61724  13 29 44.841  -07 04 36.19  23.6r 508792    568  C~2mm2      
2015 02  20.61032  13 29 37.673  -07 03 40.77  23.5r 508792    568  C~2mm2      
2015 03  18.55474  13 28 07.332  -06 53 10.33  23.4r 508792    568  C~2mm2      
2015 03  18.59568  13 28 07.151  -06 53 09.15  23.2r 508792    568  C~2mm2      
2015 04  11.49312  13 26 15.248  -06 41 12.28  23.3r 508792    568  C~2mm2      
2015 04  13.35741  13 26 06.114  -06 40 15.28  23.4r 508792    568  C~2mm2      
2015 04  13.39836  13 26 05.909  -06 40 14.03  23.4r 508792    568  C~2mm2      
2015 04  13.47268  13 26 05.534  -06 40 11.77  23.6r 508792    568  C~2mm2      
2015 04  13.47763  13 26 05.502  -06 40 11.64  23.7r 508792    568  C~2mm2      
2015 04  19.39819  13 25 36.464  -06 37 12.47  22.4r 508792    568  C~2mm2      
2015 04  19.50989  13 25 35.910  -06 37 09.13  23.2r 508792    568  C~2mm2      
2015 04  19.51516  13 25 35.879  -06 37 09.06  23.5r 508792    568  C~2mm2      
2015 04  24.23165  13 25 13.02   -06 34 49.6   23.2R 508792    G37  C~1Re8      
2015 04  24.40091  13 25 12.21   -06 34 44.6         508792    G37  C~1Re8      
2015 05  18.27253  13 23 27.031  -06 24 22.36  23.4r 508792    568  C~2mm2      
2015 06  20.27087  13 21 58.896  -06 16 30.14  23.2r 508792    568  C~2mm2      
2015 06  20.31175  13 21 58.842  -06 16 29.95  23.4r 508792    568  C~2mm2      
2015 06  22.31546  13 21 56.405  -06 16 19.86  23.6r 508792    568  C~2mm2      
2015 07  14.26780  13 21 54.494  -06 17 01.77  23.7r 508792    568  C~2mm2      
2015 07  20.29800  13 22 02.051  -06 18 02.01  23.6r 508792    568  C~2mm2      
2016 02  04.56733  13 36 29.742  -07 37 30.51  23.8w 508792    568  C~2mm2      
2016 02  10.55526  13 36 22.893  -07 36 20.96  23.6w 508792    568  C~2mm2      
2016 02  10.60492  13 36 22.822  -07 36 20.37  23.1w 508792    568  C~2mm2      
2016 02  11.57713  13 36 21.367  -07 36 07.10  23.8w 508792    568  C~2mm2      
2016 03  11.55250  13 35 00.822  -07 26 14.28  23.7w 508792    568  C~2mm2      
2016 03  12.47618  13 34 57.245  -07 25 50.03  23.5w 508792    568  C~2mm2      
2016 04  03.43722  13 33 19.932  -07 15 20.15  23.7w 508792    568  C~2mm2      
2016 04  09.41701  13 32 50.856  -07 12 19.01  24.3w 508792    568  C~2mm2      
2016 05  01.36453  13 31 04.259  -07 01 35.23  23.7w 508792    568  C~2mm2      
2016 05  02.30717  13 30 59.877  -07 01 09.40  23.9w 508792    568  C~2mm2      
2016 05  06.31695  13 30 41.552  -06 59 22.14  23.6w 508792    568  C~2mm2      
2016 05  28.27195  13 29 14.943  -06 51 12.49  23.7w 508792    568  C~2mm3      
2016 06  04.35340  13 28 53.517  -06 49 18.26  23.9w 508792    568  C~2mm3      
2016 06  27.28082  13 28 12.590  -06 46 08.49  23.9w 508792    568  C~2mm3      
2016 07  06.31671  13 28 09.607  -06 46 14.76  23.7w 508792    568  C~2mm3      
2016 07  07.28338  13 28 09.755  -06 46 18.13  23.8w 508792    568  C~2mm3      
2017 03  29.47339  13 40 14.851  -07 47 59.61        508792    568  C~2mm3      
2017 05  26.19060  13 35 50.23   -07 22 02.3   23.5R 508792    G37  C~2GiT      
2017 05  26.25556  13 35 49.99   -07 22 01.2         508792    G37  C~2GiT      
2017 05  26.32255  13 35 49.75   -07 22 00.1         508792    G37  C~2GiT      
2017 05  27.26566  13 35 46.440  -07 21 42.01  23.7w 508792    568  C~2WX0      
2017 05  27.26965  13 35 46.410  -07 21 42.01  24.0w 508792    568  C~2WX0      
2017 05  28.26731  13 35 42.957  -07 21 23.67  23.9w 508792    568  C~2WX0      
2017 05  28.27130  13 35 42.945  -07 21 23.55  23.9w 508792    568  C~2WX0      

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    -0.43       0.00    -0.73
  2   0.0001      0.00    -0.34       0.00    -0.10
  3   0.0002      0.00    -0.59       0.00    -0.59
  4   0.0110      0.00     0.13       0.00    -0.18
  5   0.0111      0.00     0.10       0.00     0.13
  6   0.1009      0.00     0.16       0.00    -0.22
  7   0.1010      0.00     0.37       0.00    -0.11
  8   0.8846      0.00    -0.26       0.00    -0.37
  9   0.8847      0.00    -0.37       0.00    -0.12
 10   0.8874      0.00     0.06       0.00    -0.32
 11   1.9494      0.00    -0.04       0.00     0.36
 12   1.9495      0.00     0.41       0.00     0.44
 13   6.0832      0.00     0.17       0.00     0.03
 14   6.0858      0.00     0.03       0.00     0.30
 15   6.0861      0.00     0.45       0.00     0.11
 16   6.2248      0.00     0.22       0.00     0.17
 17   6.2249      0.00     0.25       0.00    -0.05
 18   6.8772      0.00     0.13       0.00     1.24
 19   6.8773      0.00     0.18       0.00     1.40
 20  14.8834      0.00    -0.04       0.00    -0.09
 21  14.8835      0.00    -0.02       0.00    -0.05
 22  14.8917      0.00    -0.01       0.00    -0.08
 23  14.9627      0.00    -0.02       0.00    -0.02
 24  14.9629      0.00    -0.05       0.00     0.00
 25  15.0283      0.00    -0.04       0.00    -0.05
 26  15.0334      0.00     0.13       0.00    -0.00
 27  15.0335      0.00     0.12       0.00    -0.00
 28  15.0337      0.00     0.08       0.00    -0.01
 29  15.0337      0.00    -0.03       0.00    -0.03
 30  15.0499      0.00    -0.06       0.00     0.04
 31  15.0502      0.00    -0.03       0.00     0.03
 32  15.0502      0.00    -0.10       0.00    -0.06
 33  15.0632      0.00    -0.05       0.00    -0.05
 34  15.0636      0.00     0.21       0.00     0.00
 35  15.1290      0.00    -0.09       0.00     0.04
 36  15.2193      0.00    -0.14       0.00     0.03
 37  15.2194      0.00    -0.10       0.00    -0.02
 38  15.2249      0.00    -0.16       0.00     0.03
 39  15.2850      0.00    -0.13       0.00    -0.04
 40  15.3015      0.00    -0.16       0.00    -0.04
 41  15.8471      0.00     0.02       0.00    -0.07
 42  15.8635      0.00     0.08       0.00    -0.11
 43  15.8636      0.00     0.16       0.00    -0.18
 44  15.8663      0.00     0.02       0.00    -0.07
 45  15.9456      0.00    -0.04       0.00    -0.18
 46  15.9482      0.00     0.08       0.00    -0.12
 47  16.0083      0.00     0.02       0.00    -0.02
 48  16.0247      0.00    -0.00       0.00    -0.04
 49  16.0847      0.00    -0.07       0.00    -0.05
 50  16.0873      0.00    -0.07       0.00    -0.04
 51  16.0983      0.00     0.03       0.00    -0.02
 52  16.1584      0.00    -0.04       0.00    -0.04
 53  16.1778      0.00    -0.12       0.00    -0.04
 54  16.2406      0.00    -0.14       0.00    -0.09
 55  16.2653      0.00    -0.19       0.00    -0.13
 56  16.2680      0.00    -0.21       0.00    -0.04
 57  16.9940      0.00    -0.00       0.00    -0.15
 58  17.1520      0.00     0.12       0.00     0.31
 59  17.1522      0.00     0.07       0.00     0.16
 60  17.1524      0.00     0.12       0.00    -0.03
 61  17.1550      0.00     0.16       0.00     0.12
 62  17.1550      0.00    -0.08       0.00     0.04
 63  17.1577      0.00    -0.07       0.00    -0.12
 64  17.1577      0.00    -0.04       0.00    -0.07

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.

508792    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        43.310    43.310    43.311
ecceobj         0.125     0.125     0.125
incobj          4.675     4.675     4.675
qmin           37.169    37.394    37.216
qmax           50.719    50.537    50.776
amean          43.726    43.720    43.728
amin           43.276    43.273    43.270
amax           44.243    44.217    44.242
emean           0.123     0.122     0.125
emin            0.093     0.096     0.099
emax            0.149     0.145     0.148
imean           5.509     5.541     5.322
imin            4.217     4.216     3.947
imax            6.712     6.737     6.560
excite_mean     0.156     0.156     0.156
fracstop        1.000     1.000     1.000
cjmean          3.068     3.069     3.069

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       180.4     178.7     181.8
kozaiamp        180.0     180.0     179.9