Orbit Fit and Astrometric record for 385194

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: 385194    
# Created Sun Oct 22 01:36:44 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   69 observations of   69
# Arc:  15.38y
# First observation: 1998/05/20
#  Last observation: 2013/10/06
# Chi-squared of fit:   177.65 DOF:  132 RMS:  0.28
# Min/Max residuals:    -1.43    0.87
# Exact a, adot, b, bdot, g, gdot:
  1.448746E-05  2.038330E-02  4.027403E-07  2.379799E-04  2.229992E-02 -1.028848E-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
   -0.437502  -55.287844    0.926874   -0.003347   -0.411765  2450953.823321
# Heliocentric elements and errors
Epoch:              2450954.5000  =  1998/05/21
Mean Anomaly:          218.75263 +/-     0.000
Argument of Peri:      110.95396 +/-     0.000
Long of Asc Node:      337.00476 +/-     0.000
Inclination:             0.78599 +/-     0.000
Eccentricity:         0.04613450 +/-    0.0000
Semi-Major Axis:     43.66541985 +/-    0.0000
Time of Perihelion: 2492305.1886 +/-       0.0
Perihelion:          41.65093775 +/-    0.0000
Aphelion:            45.67990196 +/-    0.0000
Period (y)              288.5457 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           25.01680388 +/-    0.0000
Ecliptic Y          -37.72936897 +/-    0.0000
Ecliptic Z           -0.34240368 +/-    0.0000
Ecliptic XDOT         0.00205177 +/-    0.0000
Ecliptic YDOT         0.00144413 +/-    0.0000
Ecliptic ZDOT         0.00002923 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   45.27101319 +/-    0.0000
Geocenter to KBO     44.84325234 +/-    0.0000
# Hcoef:  6.58

The following table shows the complete astrometric record for 385194. 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 (385194) followed by the observatory code and reference code for the source of the astrometry.

1998 05  20.32259  20 28 39.83   -19 30 37.5   23.1R 385194    807  Ca1785      
1998 05  20.32947  20 28 39.83   -19 30 37.5   23.0R 385194    807  Ca1785      
1998 05  20.33656  20 28 39.83   -19 30 37.6   22.5R 385194    807  Ca1785      
1998 05  20.34343  20 28 39.80   -19 30 37.7   23.3R 385194    807  Ca1785      
1998 05  20.35031  20 28 39.80   -19 30 37.7   23.2R 385194    807  Ca1785      
1998 05  20.35804  20 28 39.79   -19 30 37.8   23.2R 385194    807  Ca1785      
1998 05  20.36498  20 28 39.77   -19 30 37.8   23.3R 385194    807  Ca1785      
1998 05  20.37193  20 28 39.76   -19 30 37.8   23.2R 385194    807  Ca1785      
1998 05  20.37885  20 28 39.75   -19 30 37.8   23.2R 385194    807  Ca1785      
1998 05  20.38572  20 28 39.75   -19 30 37.9   23.0R 385194    807  Ca1785      
1998 05  20.39267  20 28 39.73   -19 30 37.9   23.0R 385194    807  Ca1785      
1998 05  20.39954  20 28 39.72   -19 30 38.0   22.9R 385194    807  Ca1785      
1998 05  20.40648  20 28 39.71   -19 30 38.0   23.1R 385194    807  Ca1785      
1998 05  20.41336  20 28 39.70   -19 30 38.0   22.8R 385194    807  Ca1785      
1998 05  29.33008  20 28 24.22   -19 31 35.7   23.0R 385194    807  Ca1785      
1998 05  29.33695  20 28 24.20   -19 31 35.7   22.9R 385194    807  Ca1785      
1998 05  29.34383  20 28 24.19   -19 31 35.9   23.2R 385194    807  Ca1785      
1998 05  29.35758  20 28 24.16   -19 31 35.9   22.8R 385194    807  Ca1785      
1998 05  29.36446  20 28 24.14   -19 31 36.0   23.1R 385194    807  Ca1785      
1998 05  29.37821  20 28 24.11   -19 31 36.1   23.1R 385194    807  Ca1785      
1998 05  29.38509  20 28 24.10   -19 31 36.2   22.9R 385194    807  Ca1785      
1998 05  29.39196  20 28 24.08   -19 31 36.2   23.2R 385194    807  Ca1785      
1998 05  29.39884  20 28 24.07   -19 31 36.3   23.0R 385194    807  Ca1785      
1998 05  29.40571  20 28 24.05   -19 31 36.4   22.9R 385194    807  Ca1785      
1998 05  29.41260  20 28 24.04   -19 31 36.4   23.1R 385194    807  Ca1785      
1998 05  30.31129  20 28 22.12   -19 31 43.5   23.2R 385194    807  Ca1785      
1998 05  30.31817  20 28 22.11   -19 31 43.5   23.0R 385194    807  Ca1785      
1998 05  30.32504  20 28 22.09   -19 31 43.5   22.9R 385194    807  Ca1785      
1998 05  30.33192  20 28 22.07   -19 31 43.6   23.1R 385194    807  Ca1785      
1998 05  30.33879  20 28 22.06   -19 31 43.6   22.8R 385194    807  Ca1785      
1998 05  30.34567  20 28 22.04   -19 31 43.7   22.9R 385194    807  Ca1785      
1998 05  30.35270  20 28 22.03   -19 31 43.8   22.7R 385194    807  Ca1785      
1998 05  30.35957  20 28 22.01   -19 31 43.9   22.8R 385194    807  Ca1785      
1998 05  30.36645  20 28 22.00   -19 31 43.9   22.9R 385194    807  Ca1785      
1998 05  30.37332  20 28 21.98   -19 31 43.9   22.8R 385194    807  Ca1785      
1998 05  30.38035  20 28 21.97   -19 31 44.0   23.0R 385194    807  Ca1785      
1998 05  30.38722  20 28 21.95   -19 31 44.0   22.9R 385194    807  Ca1785      
1998 05  30.39410  20 28 21.94   -19 31 44.2   22.7R 385194    807  Ca1785      
1998 06  30.46970  20 26 42.07   -19 37 39.6         385194    568  Ca1785      
1998 06  30.52193  20 26 41.86   -19 37 40.3         385194    568  Ca1785      
1998 07  01.46389  20 26 38.02   -19 37 53.7         385194    568  Ca1785      
1998 10  15.20490  20 20 39.65   -19 57 25.9   23.0R 385194    568  Ca2550      
1998 10  16.20487  20 20 39.49   -19 57 26.1   22.8R 385194    568  Ca2550      
1999 05  21.45459  20 33 26.58   -19 12 47.2   22.3R 385194    697  Cb0747      
1999 05  22.43241  20 33 25.31   -19 12 52.9   22.8R 385194    697  Cb0747      
1999 05  22.44609  20 33 25.27   -19 12 52.4   22.2R 385194    697  Cb0747      
1999 05  22.45920  20 33 25.30   -19 12 52.7   22.5R 385194    697  Cb0747      
1999 05  22.47234  20 33 25.24   -19 12 52.6   22.4R 385194    697  Cb0747      
1999 05  23.42662  20 33 23.80   -19 12 58.8   22.5R 385194    697  Cb0747      
1999 05  24.41990  20 33 22.29   -19 13 04.7         385194    697  Cb0747      
1999 05  24.42902  20 33 22.28   -19 13 04.6         385194    697  Cb0747      
1999 06  10.30106  20 32 44.45   -19 15 27.2         385194    829  Cb8997      
1999 06  10.34494  20 32 44.36   -19 15 27.5         385194    829  Cb8997      
1999 07  09.41067  20 30 57.35   -19 21 54.7   22.0V 385194    568  Ci2589      
1999 07  09.46164  20 30 57.12   -19 21 55.3   22.3V 385194    568  Ci2589      
2000 08  07.07119  20 33 35.05   -19 11 34.6   22.9R 385194    809  Cb8997      
2000 08  07.10780  20 33 34.89   -19 11 35.3   23.0R 385194    809  Cb8997      
2000 08  26.99485  20 32 09.48   -19 16 35.9   22.5R 385194    807  Cc0747      
2000 08  27.06080  20 32 09.22   -19 16 36.8         385194    807  Cc0747      
2001 05  22.55999  20 42 56.89   -18 35 45.0         385194    568  Cd2199      
2001 05  22.59292  20 42 56.85   -18 35 45.2         385194    568  Cd2199      
2001 05  23.52932  20 42 55.64   -18 35 50.3         385194    568  Cd2199      
2001 05  23.54551  20 42 55.61   -18 35 50.3         385194    568  Cd2199      
2005 06  14.421604 21 01 09.14   -17 19 00.4         385194    645  C~1dXj      
2005 06  14.422433 21 01 09.14   -17 19 00.4         385194    645  C~1dXj      
2005 06  14.424921 21 01 09.13   -17 19 00.4         385194    645  C~1dXj      
2013 10  05.15547  21 31 51.68   -14 51 27.7   23.1R 385194    695  C~0zdB      
2013 10  05.26913  21 31 51.41   -14 51 28.9         385194    695  C~0zdB      
2013 10  06.17324  21 31 49.24   -14 51 39.4         385194    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    -0.10       0.00    -0.46
  2   0.0000      0.00     0.17       0.00    -0.01
  3   0.0000      0.00     0.32       0.00    -0.07
  4   0.0001      0.00     0.02       0.00    -0.13
  5   0.0001      0.00     0.17       0.00    -0.10
  6   0.0001      0.00     0.18       0.00    -0.16
  7   0.0001      0.00     0.03       0.00    -0.12
  8   0.0001      0.00     0.03       0.00    -0.08
  9   0.0002      0.00     0.03       0.00    -0.05
 10   0.0002      0.00     0.18       0.00    -0.11
 11   0.0002      0.00     0.03       0.00    -0.08
 12   0.0002      0.00     0.03       0.00    -0.14
 13   0.0002      0.00     0.03       0.00    -0.10
 14   0.0002      0.00     0.03       0.00    -0.07
 15   0.0247      0.00     0.12       0.00     0.02
 16   0.0247      0.00     0.05       0.00     0.07
 17   0.0247      0.00     0.12       0.00    -0.07
 18   0.0247      0.00     0.12       0.00     0.03
 19   0.0248      0.00     0.04       0.00    -0.01
 20   0.0248      0.00     0.04       0.00    -0.01
 21   0.0248      0.00     0.12       0.00    -0.06
 22   0.0248      0.00     0.04       0.00    -0.00
 23   0.0248      0.00     0.11       0.00    -0.05
 24   0.0249      0.00     0.04       0.00    -0.10
 25   0.0249      0.00     0.11       0.00    -0.05
 26   0.0273      0.00     0.02       0.00    -0.10
 27   0.0274      0.00     0.10       0.00    -0.04
 28   0.0274      0.00     0.03       0.00     0.02
 29   0.0274      0.00    -0.04       0.00    -0.03
 30   0.0274      0.00     0.04       0.00     0.03
 31   0.0274      0.00    -0.02       0.00    -0.02
 32   0.0275      0.00     0.06       0.00    -0.06
 33   0.0275      0.00    -0.00       0.00    -0.11
 34   0.0275      0.00     0.08       0.00    -0.05
 35   0.0275      0.00     0.01       0.00     0.00
 36   0.0275      0.00     0.10       0.00    -0.04
 37   0.0276      0.00     0.03       0.00     0.01
 38   0.0276      0.00     0.11       0.00    -0.13
 39   0.1127      0.00     0.06       0.00    -0.15
 40   0.1128      0.00     0.16       0.00    -0.10
 41   0.1154      0.00     0.26       0.00    -0.08
 42   0.4049      0.00     0.42       0.00     0.84
 43   0.4076      0.00     0.10       0.00     0.37
 44   1.0024      0.00    -0.68       0.00     0.59
 45   1.0051      0.00     0.42       0.00     0.13
 46   1.0051      0.00     0.13       0.00     0.71
 47   1.0052      0.00     0.87       0.00     0.48
 48   1.0052      0.00     0.27       0.00     0.66
 49   1.0078      0.00    -0.49       0.00    -0.14
 50   1.0105      0.00    -0.21       0.00    -0.14
 51   1.0106      0.00    -0.14       0.00     0.02
 52   1.0568      0.00    -1.43       0.00    -0.97
 53   1.0569      0.00    -0.85       0.00    -0.81
 54   1.1364      0.00    -0.38       0.00    -0.12
 55   1.1366      0.00    -0.46       0.00     0.07
 56   2.2170      0.00    -0.28       0.00     0.21
 57   2.2171      0.00    -0.15       0.00     0.11
 58   2.2715      0.00    -0.01       0.00    -0.01
 59   2.2717      0.00     0.06       0.00     0.01
 60   3.0068      0.00    -0.07       0.00     0.28
 61   3.0069      0.00    -0.01       0.00     0.26
 62   3.0095      0.00     0.05       0.00     0.15
 63   3.0095      0.00    -0.05       0.00     0.24
 64   7.0694      0.00     0.37       0.00    -0.04
 65   7.0694      0.00     0.41       0.00    -0.03
 66   7.0694      0.00     0.36       0.00    -0.00
 67  15.3781      0.00    -0.18       0.00    -0.02
 68  15.3784      0.00     0.06       0.00     0.07
 69  15.3808      0.00     0.08       0.00    -0.23

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.

385194    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.455    43.455    43.455
ecceobj         0.051     0.051     0.051
incobj          0.790     0.790     0.790
qmin           39.978    39.985    39.968
qmax           47.185    47.178    47.180
amean          43.455    43.454    43.455
amin           43.107    43.104    43.116
amax           43.805    43.810    43.810
emean           0.060     0.060     0.060
emin            0.040     0.041     0.040
emax            0.077     0.077     0.077
imean           2.121     2.121     2.121
imin            1.128     1.128     1.128
imax            2.949     2.949     2.949
excite_mean     0.071     0.071     0.071
fracstop        1.000     1.000     1.000
cjmean          3.089     3.089     3.089

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       179.2     179.2     179.1
kozaiamp        180.0     179.9     180.0