Orbit Fit and Astrometric record for 385447

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: 385447    
# Created Wed Dec 13 02:36:45 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   21 observations of   21
# Arc:  10.12y
# First observation: 2003/08/25
#  Last observation: 2013/10/06
# Chi-squared of fit:    38.46 DOF:   36 RMS:  0.24
# Min/Max residuals:    -0.61    0.83
# Exact a, adot, b, bdot, g, gdot:
  1.570673E-05  2.344140E-02 -1.612767E-06 -1.693973E-03  2.404801E-02 -1.456444E-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
   -1.742965  -43.798776   -0.264776   -0.029765   -0.979596  2452876.568883
# Heliocentric elements and errors
Epoch:              2452876.5000  =  2003/08/25
Mean Anomaly:            0.07678 +/-     0.000
Argument of Peri:      202.35002 +/-     0.000
Long of Asc Node:      114.19022 +/-     0.000
Inclination:             4.46725 +/-     0.000
Eccentricity:         0.02380389 +/-    0.0000
Semi-Major Axis:     43.59716643 +/-    0.0000
Time of Perihelion: 2452854.0754 +/-       0.0
Perihelion:          42.55938409 +/-    0.0000
Aphelion:            44.63494878 +/-    0.0000
Period (y)              287.8695 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           30.88830007 +/-    0.0000
Ecliptic Y          -29.25088533 +/-    0.0000
Ecliptic Z           -1.26486529 +/-    0.0000
Ecliptic XDOT         0.00182569 +/-    0.0000
Ecliptic YDOT         0.00193607 +/-    0.0000
Ecliptic ZDOT        -0.00019209 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.55938505 +/-    0.0000
Geocenter to KBO     41.58353047 +/-    0.0000
# Hcoef:  6.53

The following table shows the complete astrometric record for 385447. 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 (385447) followed by the observatory code and reference code for the source of the astrometry.

2003 08  25.06814  21 16 49.19   -17 38 36.1   22.1R 385447    807  Cl2711      
2003 08  25.15384  21 16 48.80   -17 38 37.9         385447    807  Cl2711      
2003 10  22.11514  21 13 56.46   -17 50 44.1   23.2R 385447    695  Cl2711      
2003 10  23.11041  21 13 55.76   -17 50 45.8         385447    695  Cl2711      
2004 08  12.13131  21 23 14.27   -17 15 10.1   22.0R 385447    807  Cl8405      
2004 08  12.23308  21 23 13.78   -17 15 12.2         385447    807  Cl8405      
2004 10  12.11124  21 19 32.41   -17 31 43.4   23.6R 385447    695  Cl8405      
2004 10  12.20886  21 19 32.23   -17 31 43.1         385447    695  Cl8405      
2005 08  08.09498  21 29 01.88   -16 53 52.6   21.7R 385447    807  Co3932      
2005 08  08.21160  21 29 01.35   -16 53 55.3         385447    807  Co3932      
2005 08  09.09967  21 28 57.21   -16 54 16.0         385447    807  Co3932      
2006 08  21.17719  21 33 28.84   -16 38 39.7   21.6R 385447    807  Cs2604      
2006 08  21.26808  21 33 28.42   -16 38 41.9         385447    807  Cs2604      
2006 08  22.17166  21 33 24.25   -16 39 02.2         385447    807  Cs2604      
2007 06  23.35101  21 42 48.85   -15 56 25.7   23.3R 385447    250  S~06Ad      
2007 06  23.35795  21 42 48.83   -15 56 25.8         385447    250  S~06Ad      
2007 06  23.41559  21 42 48.69   -15 56 26.7         385447    250  S~06Ad      
2007 06  23.42253  21 42 48.67   -15 56 26.8         385447    250  S~06Ad      
2013 10  05.19265  22 08 02.12   -14 19 58.9   22.4R 385447    695  C~0zdV      
2013 10  05.28549  22 08 01.80   -14 19 59.8         385447    695  C~0zdV      
2013 10  06.23479  22 07 58.88   -14 20 13.8         385447    695  C~0zdV      

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    -0.13       0.00    -0.61
  2   0.0002      0.00     0.03       0.00     0.08
  3   0.1589      0.00     0.05       0.00    -0.06
  4   0.1616      0.00     0.06       0.00    -0.21
  5   0.9666      0.00    -0.01       0.00    -0.16
  6   0.9669      0.00    -0.07       0.00     0.06
  7   1.1336      0.00     0.37       0.00    -0.08
  8   1.1339      0.00     0.27       0.00     0.83
  9   1.9549      0.00    -0.24       0.00    -0.27
 10   1.9552      0.00     0.09       0.00    -0.23
 11   1.9576      0.00     0.05       0.00    -0.23
 12   2.9900      0.00    -0.13       0.00    -0.20
 13   2.9903      0.00    -0.02       0.00    -0.33
 14   2.9928      0.00    -0.10       0.00     0.03
 15   3.8283      0.00     0.23       0.00     0.14
 16   3.8283      0.00     0.19       0.00     0.15
 17   3.8285      0.00     0.22       0.00     0.17
 18   3.8285      0.00     0.18       0.00     0.18
 19  10.1140      0.00     0.19       0.00    -0.39
 20  10.1142      0.00    -0.15       0.00     0.10
 21  10.1168      0.00     0.07       0.00     0.20

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.

385447    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.915    43.915    43.915
ecceobj         0.031     0.031     0.031
incobj          4.461     4.461     4.461
qmin           41.839    41.839    41.839
qmax           46.091    46.090    46.094
amean          43.881    43.881    43.881
amin           43.535    43.534    43.536
amax           44.230    44.229    44.230
emean           0.028     0.028     0.028
emin            0.012     0.012     0.012
emax            0.043     0.043     0.043
imean           2.997     2.997     2.997
imin            2.354     2.354     2.354
imax            3.642     3.642     3.642
excite_mean     0.060     0.060     0.060
fracstop        1.000     1.000     1.000
cjmean          3.096     3.096     3.096

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       179.4     179.3     179.4
kozaiamp        179.9     180.0     180.0