Orbit Fit and Astrometric record for 385445

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: 385445    
# Created Sat Dec 16 02:36:46 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   20 observations of   20
# Arc:  10.12y
# First observation: 2003/08/24
#  Last observation: 2013/10/07
# Chi-squared of fit:    51.91 DOF:   34 RMS:  0.28
# Min/Max residuals:    -0.67    0.53
# Exact a, adot, b, bdot, g, gdot:
  1.523147E-05  2.294777E-02  1.588336E-06  1.311329E-03  2.454385E-02  3.052039E-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
    1.698883  -46.737991   -0.297871    0.028822   -0.970325  2452875.529113
# Heliocentric elements and errors
Epoch:              2452876.5000  =  2003/08/25
Mean Anomaly:          106.26443 +/-     0.000
Argument of Peri:      264.87278 +/-     0.000
Long of Asc Node:      286.86703 +/-     0.000
Inclination:             3.67601 +/-     0.000
Eccentricity:         0.15243339 +/-    0.0000
Semi-Major Axis:     39.25495111 +/-    0.0000
Time of Perihelion: 2426359.4330 +/-       0.0
Perihelion:          33.27118593 +/-    0.0000
Aphelion:            45.23871628 +/-    0.0000
Period (y)              245.9517 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           28.79047463 +/-    0.0000
Ecliptic Y          -30.15614742 +/-    0.0000
Ecliptic Z            1.20797175 +/-    0.0000
Ecliptic XDOT         0.00208911 +/-    0.0000
Ecliptic YDOT         0.00150395 +/-    0.0000
Ecliptic ZDOT         0.00015648 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.71015252 +/-    0.0000
Geocenter to KBO     40.74335213 +/-    0.0000
# Hcoef:  6.70

The following table shows the complete astrometric record for 385445. 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 (385445) followed by the observatory code and reference code for the source of the astrometry.

2003 08  24.02837  21 00 54.41   -15 12 33.2   21.9R 385445    807  Ci4137      
2003 08  25.03682  21 00 49.81   -15 12 53.0         385445    807  Ci4137      
2003 08  25.14609  21 00 49.31   -15 12 54.9         385445    807  Ci4137      
2003 10  01.25144  20 58 36.07   -15 22 49.7   22.9R 385445    568  Ci6964      
2003 10  01.34012  20 58 35.83   -15 22 50.8         385445    568  Ci6964      
2003 10  02.29552  20 58 33.66   -15 23 01.2         385445    568  Ci6964      
2003 11  20.07602  20 58 34.53   -15 24 23.1   23.0R 385445    695  Cj4699      
2003 11  21.07725  20 58 36.92   -15 24 14.8         385445    695  Cj4699      
2004 05  28.23668  21 11 28.28   -14 24 19.8   22.3R 385445    304  Cl4360      
2004 05  28.29377  21 11 28.23   -14 24 19.9         385445    304  Cl4360      
2004 08  23.12705  21 06 01.04   -14 45 49.2   23.0R 385445    304  Cl4360      
2004 08  23.26447  21 06 00.41   -14 45 51.6         385445    304  Cl4360      
2005 12  01.08402  21 08 58.07   -14 30 46.8   23.2R 385445    695  Cp9888      
2005 12  01.11349  21 08 58.17   -14 30 46.3         385445    695  Cp9888      
2005 12  02.07363  21 09 01.19   -14 30 34.1         385445    695  Cp9888      
2006 04  26.36832  21 21 01.81   -13 33 30.6   21.9R 385445    807  Cr3580      
2006 04  27.35236  21 21 03.74   -13 33 18.0         385445    807  Cr3580      
2006 04  28.36565  21 21 05.61   -13 33 05.6         385445    807  Cr3580      
2013 10  06.19947  21 47 02.83   -10 51 14.1   23.1R 385445    695  C~0zdV      
2013 10  07.17036  21 47 00.23   -10 51 30.1         385445    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    -0.11       0.00    -0.67
  2   0.0028      0.00     0.02       0.00    -0.29
  3   0.0031      0.00     0.09       0.00    -0.05
  4   0.1046      0.00     0.42       0.00     0.23
  5   0.1049      0.00     0.03       0.00     0.12
  6   0.1075      0.00     0.12       0.00     0.28
  7   0.2411      0.00    -0.22       0.00    -0.00
  8   0.2438      0.00    -0.53       0.00    -0.11
  9   0.7617      0.00     0.17       0.00     0.50
 10   0.7618      0.00     0.49       0.00     0.53
 11   0.9996      0.00    -0.29       0.00    -0.25
 12   1.0000      0.00    -0.13       0.00     0.10
 13   2.2726      0.00     0.28       0.00    -0.26
 14   2.2726      0.00     0.42       0.00    -0.12
 15   2.2753      0.00    -0.08       0.00     0.29
 16   2.6731      0.00    -0.14       0.00    -0.43
 17   2.6758      0.00    -0.04       0.00    -0.25
 18   2.6785      0.00    -0.30       0.00    -0.22
 19  10.1196      0.00    -0.14       0.00     0.25
 20  10.1222      0.00     0.18       0.00    -0.03

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.

385445    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.452    39.453    39.452
ecceobj         0.147     0.147     0.147
incobj          3.670     3.670     3.670
qmin           32.723    32.721    32.725
qmax           46.857    46.842    46.871
amean          39.458    39.458    39.458
amin           38.953    38.951    38.954
amax           40.014    40.003    40.005
emean           0.153     0.153     0.153
emin            0.134     0.133     0.135
emax            0.172     0.172     0.172
imean           5.563     5.563     5.563
imin            4.549     4.548     4.549
imax            6.257     6.258     6.256
excite_mean     0.181     0.181     0.181
fracstop        1.000     1.000     1.000
cjmean          3.014     3.014     3.014

libcent 0       180.0     180.1     179.8
libamp  0       113.9     114.2     112.9
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       181.2     181.3     181.1
kozaiamp        180.0     180.0     180.0