Orbit Fit and Astrometric record for 385191

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: 385191    
# Created Tue Dec 12 02:36:47 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   44 observations of   44
# Arc:  16.08y
# First observation: 1997/09/06
#  Last observation: 2013/10/06
# Chi-squared of fit:   247.08 DOF:   82 RMS:  0.42
# Min/Max residuals:    -1.35    0.96
# Exact a, adot, b, bdot, g, gdot:
  1.379745E-05  2.254205E-02 -3.001996E-06 -5.093680E-03  2.420480E-02  1.825866E-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
   -0.017280  -16.192065   -0.012803   -0.000511   -0.999286  2450698.459061
# Heliocentric elements and errors
Epoch:              2450698.5000  =  1997/09/07
Mean Anomaly:          150.87044 +/-     0.000
Argument of Peri:       28.18695 +/-     0.000
Long of Asc Node:      163.74763 +/-     0.000
Inclination:            12.69502 +/-     0.000
Eccentricity:         0.01866156 +/-    0.0000
Semi-Major Axis:     41.63972913 +/-    0.0000
Time of Perihelion: 2409568.1954 +/-       0.0
Perihelion:          40.86266691 +/-    0.0000
Aphelion:            42.41679135 +/-    0.0000
Period (y)              268.7015 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           40.64617134 +/-    0.0000
Ecliptic Y          -11.79104005 +/-    0.0000
Ecliptic Z           -0.01255761 +/-    0.0000
Ecliptic XDOT         0.00073509 +/-    0.0000
Ecliptic YDOT         0.00245049 +/-    0.0000
Ecliptic ZDOT        -0.00057630 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.32185672 +/-    0.0000
Geocenter to KBO     41.31413757 +/-    0.0000
# Hcoef:  6.99

The following table shows the complete astrometric record for 385191. 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 (385191) followed by the observatory code and reference code for the source of the astrometry.

1997 09  06.95833  23 00 21.29   -06 23 04.2   23.0R 385191    950  C30629      
1997 09  06.99889  23 00 21.10   -06 23 05.5         385191    950  C30629      
1997 09  07.06715  23 00 20.79   -06 23 07.6         385191    950  C30629      
1997 09  07.08670  23 00 20.74   -06 23 08.5         385191    950  C30629      
1997 09  07.10470  23 00 20.63   -06 23 08.6         385191    950  C30629      
1997 09  07.28714  23 00 19.84   -06 23 14.3         385191    675  C30579      
1997 09  07.42352  23 00 19.23   -06 23 18.4         385191    675  C30579      
1997 09  08.25432  23 00 15.57   -06 23 44.1         385191    675  C30579      
1997 09  08.38924  23 00 14.96   -06 23 48.2         385191    675  C30579      
1997 09  10.00484  23 00 07.88   -06 24 36.7         385191    950  C30629      
1997 09  10.02200  23 00 07.80   -06 24 37.7         385191    950  C30629      
1997 09  10.04023  23 00 07.70   -06 24 38.8         385191    950  C30629      
1997 09  23.25225  22 59 10.69   -06 31 12.9         385191    568  Ca0019      
1997 09  23.28191  22 59 10.58   -06 31 13.2         385191    568  Ca0019      
1997 09  24.28318  22 59 06.41   -06 31 42.5         385191    568  Ca0019      
1997 09  24.34705  22 59 06.11   -06 31 44.5         385191    568  Ca0019      
1997 09  27.13999  22 58 54.64   -06 33 05.2         385191    696  Ca0019      
1997 09  27.25406  22 58 54.17   -06 33 07.6   22.9R 385191    696  Ca0019      
1997 10  05.15420  22 58 23.30   -06 36 43.5         385191    675  Ca0019      
1997 10  05.22851  22 58 23.03   -06 36 45.0   23.2R 385191    675  Ca0019      
1997 10  05.29484  22 58 22.79   -06 36 46.8         385191    675  Ca0019      
1997 10  27.19579  22 57 14.07   -06 44 56.9         385191    675  Ca0287      
1997 10  27.21109  22 57 14.03   -06 44 57.4         385191    675  Ca0287      
1997 10  27.22388  22 57 13.99   -06 44 57.5         385191    675  Ca0287      
1998 05  29.54402  23 09 10.01   -05 41 22.5         385191    568  Ca1238      
1998 05  29.56914  23 09 10.04   -05 41 22.1         385191    568  Ca1238      
1998 05  29.59532  23 09 10.09   -05 41 21.7         385191    568  Ca1238      
1998 05  29.61889  23 09 10.13   -05 41 21.8         385191    568  Ca1238      
1998 05  30.54913  23 09 11.60   -05 41 15.7         385191    568  Ca1238      
1998 05  30.57946  23 09 11.63   -05 41 15.7   23.6R 385191    568  Ca1238      
1999 08  09.46958  23 12 52.04   -05 41 03.8         385191    675  Ca7284      
1999 08  09.48930  23 12 51.99   -05 41 04.3   23.0R 385191    675  Ca7284      
1999 11  30.14954  23 06 57.11   -06 23 20.1   23.1r 385191    695  Cq9067      
1999 12  01.12499  23 06 57.30   -06 23 21.1   23.1r 385191    695  Cq9067      
2000 08  03.33806  23 18 24.08   -05 24 34.1         385191    809  Cc2106      
2000 08  07.32951  23 18 10.52   -05 26 16.0   23.0R 385191    809  Cb8917      
2000 08  07.35782  23 18 10.42   -05 26 16.7   23.3R 385191    809  Cb8917      
2000 08  07.39097  23 18 10.31   -05 26 17.5   23.4R 385191    809  Cb8917      
2008 11  20.234895 23 53 14.32   -04 13 45.7   22.8V 385191    645  C~1dXj      
2008 11  20.235725 23 53 14.32   -04 13 45.7   22.7V 385191    645  C~1dXj      
2008 11  20.238213 23 53 14.31   -04 13 45.7   23.1V 385191    645  C~1dXj      
2013 10  05.30978  00 21 41.01   -02 39 58.3   22.7R 385191    695  C~0zdB      
2013 10  05.35453  00 21 40.80   -02 39 59.7         385191    695  C~0zdB      
2013 10  06.32898  00 21 36.55   -02 40 28.9         385191    695  C~0zdB      

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    -0.18       0.00    -1.24
  2   0.0001      0.00     0.13       0.00    -0.03
  3   0.0003      0.00     0.08       0.00    -0.04
  4   0.0004      0.00     0.64       0.00    -0.35
  5   0.0004      0.00     0.21       0.00     0.10
  6   0.0009      0.00     0.32       0.00    -0.02
  7   0.0013      0.00     0.34       0.00     0.03
  8   0.0035      0.00     0.22       0.00    -0.34
  9   0.0039      0.00     0.14       0.00    -0.33
 10   0.0083      0.00     0.57       0.00     0.35
 11   0.0084      0.00     0.52       0.00    -0.13
 12   0.0084      0.00     0.25       0.00    -0.67
 13   0.0446      0.00    -0.35       0.00    -0.46
 14   0.0447      0.00    -0.11       0.00     0.11
 15   0.0474      0.00    -0.07       0.00    -0.25
 16   0.0476      0.00    -0.52       0.00    -0.40
 17   0.0553      0.00    -0.47       0.00    -1.35
 18   0.0556      0.00    -0.45       0.00    -0.52
 19   0.0772      0.00     0.22       0.00    -0.69
 20   0.0774      0.00     0.43       0.00    -0.23
 21   0.0776      0.00     0.63       0.00    -0.29
 22   0.1375      0.00    -0.07       0.00     0.82
 23   0.1376      0.00    -0.10       0.00     0.60
 24   0.1376      0.00    -0.22       0.00     0.73
 25   0.7244      0.00    -0.20       0.00     0.08
 26   0.7245      0.00    -0.34       0.00     0.31
 27   0.7245      0.00    -0.20       0.00     0.54
 28   0.7246      0.00    -0.14       0.00     0.28
 29   0.7271      0.00    -0.02       0.00     0.36
 30   0.7272      0.00    -0.24       0.00     0.17
 31   1.9206      0.00    -0.70       0.00     0.02
 32   1.9207      0.00    -0.35       0.00     0.04
 33   2.2291      0.00     0.06       0.00     0.00
 34   2.2318      0.00     0.06       0.00    -0.23
 35   2.9059      0.00    -0.21       0.00     0.96
 36   2.9168      0.00    -0.02       0.00     0.72
 37   2.9169      0.00     0.00       0.00     0.76
 38   2.9170      0.00     0.13       0.00     0.82
 39  11.2040      0.00     0.24       0.00    -0.43
 40  11.2040      0.00     0.27       0.00    -0.43
 41  11.2041      0.00     0.18       0.00    -0.40
 42  16.0776      0.00     0.10       0.00     0.14
 43  16.0777      0.00    -0.07       0.00     0.09
 44  16.0804      0.00    -0.11       0.00     0.09

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.

385191    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        41.557    41.557    41.557
ecceobj         0.019     0.019     0.019
incobj         12.704    12.704    12.704
qmin           39.475    39.478    39.463
qmax           43.327    43.338    43.315
amean          41.371    41.371    41.371
amin           41.063    41.063    41.063
amax           41.689    41.688    41.690
emean           0.025     0.025     0.025
emin            0.010     0.010     0.010
emax            0.040     0.040     0.040
imean          12.688    12.688    12.688
imin           11.722    11.722    11.722
imax           13.622    13.622    13.617
excite_mean     0.221     0.221     0.221
fracstop        1.000     1.000     1.000
cjmean          3.014     3.014     3.014

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       175.3     175.3     175.2
kozaiamp        179.9     179.9     180.0