Orbit Fit and Astrometric record for 408832

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: 408832    
# Created Sat Dec 16 02:36:47 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   27 observations of   27
# Arc:  14.23y
# First observation: 2000/07/31
#  Last observation: 2014/10/22
# Chi-squared of fit:    82.30 DOF:   48 RMS:  0.31
# Min/Max residuals:    -0.69    1.30
# Exact a, adot, b, bdot, g, gdot:
  1.558861E-05  2.082146E-02 -3.461232E-07 -7.495778E-04  2.258885E-02 -4.868498E-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
    0.639270  -33.782919    0.317730    0.010588   -0.963737  2451756.790313
# Heliocentric elements and errors
Epoch:              2451756.5000  =  2000/07/31
Mean Anomaly:          236.61934 +/-     0.000
Argument of Peri:      290.26815 +/-     0.000
Long of Asc Node:      162.77044 +/-     0.000
Inclination:             2.14526 +/-     0.000
Eccentricity:         0.04136968 +/-    0.0000
Semi-Major Axis:     44.18040121 +/-    0.0000
Time of Perihelion: 2488517.5141 +/-       0.0
Perihelion:          42.35267232 +/-    0.0000
Aphelion:            46.00813009 +/-    0.0000
Period (y)              293.6653 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           37.42299893 +/-    0.0000
Ecliptic Y          -25.40974114 +/-    0.0000
Ecliptic Z            0.49389234 +/-    0.0000
Ecliptic XDOT         0.00134793 +/-    0.0000
Ecliptic YDOT         0.00213534 +/-    0.0000
Ecliptic ZDOT        -0.00009135 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   45.23695051 +/-    0.0000
Geocenter to KBO     44.26968101 +/-    0.0000
# Hcoef:  6.17

The following table shows the complete astrometric record for 408832. 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 (408832) followed by the observatory code and reference code for the source of the astrometry.

2000 07  31.28957  21 52 56.76   -12 10 37.3   22.0R 408832    807  Cg3218      
2000 07  31.36788  21 52 56.41   -12 10 38.6         408832    807  Cg3218      
2000 09  21.18305  21 49 23.59   -12 29 44.3   22.4R 408832    695  Ch1433      
2000 09  21.26456  21 49 23.30   -12 29 45.5         408832    695  Ch1433      
2001 08  21.16381  21 56 08.42   -11 56 33.0   21.3R 408832    807  Cd7926      
2001 08  21.23808  21 56 08.11   -11 56 34.9         408832    807  Cd7926      
2001 09  12.25165  21 54 36.30   -12 04 56.9   22.2R 408832    695  Cd7926      
2001 09  12.29892  21 54 36.10   -12 04 58.1         408832    695  Cd7926      
2002 08  09.19413  22 01 39.22   -11 29 37.3   21.5R 408832    807  Cg3218      
2002 08  10.27184  22 01 34.68   -11 30 01.9         408832    807  Cg3218      
2002 08  10.37531  22 01 34.24   -11 30 04.4         408832    807  Cg3218      
2003 08  31.33446  22 04 43.59   -11 15 50.2   22.9g 408832    568  Cq9101      
2003 08  31.36834  22 04 43.44   -11 15 51.0   22.8g 408832    568  Cq9101      
2003 08  31.39518  22 04 43.32   -11 15 51.5   23.1g 408832    568  Cq9101      
2003 09  04.45098  22 04 26.22   -11 17 27.9   23.6g 408832    568  Cq9101      
2005 09  30.11278  22 12 00.94   -10 41 31.8   22.5R 408832    688  Co3551      
2005 09  30.20355  22 12 00.63   -10 41 33.1         408832    688  Co3551      
2006 09  24.16843  22 16 59.17   -10 16 17.6   22.4R 408832    688  Cs0792      
2006 09  24.26229  22 16 58.88   -10 16 21.2         408832    688  Cs0792      
2009 10  12.11987  22 29 49.31   -09 11 15.5   22.8R 408832    688  C~09wm      
2009 10  12.18649  22 29 49.10   -09 11 16.6         408832    688  C~09wm      
2014 08  31.35238  22 55 31.28   -06 51 03.1   22.4R 408832    G37  C~18cF      
2014 08  31.44025  22 55 30.90   -06 51 05.4         408832    G37  C~18cF      
2014 09  01.33486  22 55 27.13   -06 51 29.0         408832    G37  C~18cF      
2014 09  01.42249  22 55 26.77   -06 51 31.4         408832    G37  C~18cF      
2014 10  22.13472  22 52 17.68   -07 11 17.2   22.6R 408832    G37  C~1C5i      
2014 10  22.24126  22 52 17.40   -07 11 19.0         408832    G37  C~1C5i      

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    -0.69
  2   0.0002      0.00    -0.52       0.00     0.30
  3   0.1421      0.00    -0.02       0.00    -0.29
  4   0.1423      0.00    -0.04       0.00     0.06
  5   1.0565      0.00     0.20       0.00     0.20
  6   1.0567      0.00     0.44       0.00     0.05
  7   1.1169      0.00     0.20       0.00     0.02
  8   1.1171      0.00     0.02       0.00    -0.17
  9   2.0230      0.00     0.19       0.00    -0.19
 10   2.0260      0.00     0.21       0.00     0.11
 11   2.0262      0.00     0.26       0.00    -0.00
 12   3.0829      0.00     0.29       0.00     0.10
 13   3.0830      0.00     0.24       0.00     0.11
 14   3.0831      0.00     0.18       0.00     0.25
 15   3.0942      0.00     0.23       0.00    -0.21
 16   5.1658      0.00    -0.37       0.00    -0.59
 17   5.1661      0.00    -0.44       0.00    -0.14
 18   6.1489      0.00    -0.52       0.00     1.30
 19   6.1491      0.00     0.36       0.00    -0.29
 20   9.1987      0.00     0.14       0.00    -0.07
 21   9.1989      0.00    -0.07       0.00     0.00
 22  14.0837      0.00    -0.04       0.00    -0.11
 23  14.0839      0.00    -0.10       0.00    -0.09
 24  14.0864      0.00    -0.14       0.00    -0.01
 25  14.0866      0.00     0.09       0.00    -0.10
 26  14.2254      0.00     0.26       0.00     0.18
 27  14.2257      0.00     0.37       0.00     0.15

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.

408832    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.263    44.263    44.263
ecceobj         0.040     0.040     0.040
incobj          2.145     2.145     2.145
qmin           41.265    41.268    41.262
qmax           47.243    47.237    47.246
amean          44.152    44.152    44.152
amin           43.804    43.804    43.804
amax           44.514    44.511    44.514
emean           0.046     0.046     0.046
emin            0.030     0.030     0.030
emax            0.062     0.062     0.062
imean           2.351     2.351     2.351
imin            1.714     1.713     1.714
imax            2.998     2.998     2.998
excite_mean     0.062     0.062     0.062
fracstop        1.000     1.000     1.000
cjmean          3.099     3.099     3.099

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       191.4     191.5     191.3
kozaiamp        179.9     180.0     179.9