Orbit Fit and Astrometric record for 439858

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: 439858    
# Created Wed Oct 18 01:36:47 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   43 observations of   43
# Arc:  15.86y
# First observation: 1999/07/19
#  Last observation: 2015/05/28
# Chi-squared of fit:   101.33 DOF:   80 RMS:  0.27
# Min/Max residuals:    -1.05    0.57
# Exact a, adot, b, bdot, g, gdot:
  1.664872E-05  2.507539E-02 -2.908065E-07 -1.394845E-03  2.503635E-02  1.245670E-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
   -0.120123  -44.359662    0.340952   -0.002237   -0.955077  2451379.023233
# Heliocentric elements and errors
Epoch:              2451378.5000  =  1999/07/19
Mean Anomaly:          352.51768 +/-     0.000
Argument of Peri:      190.31818 +/-     0.000
Long of Asc Node:      133.06265 +/-     0.000
Inclination:             3.18222 +/-     0.000
Eccentricity:         0.04579975 +/-    0.0000
Semi-Major Axis:     42.84703019 +/-    0.0000
Time of Perihelion: 2453507.6842 +/-       0.0
Perihelion:          40.88464688 +/-    0.0000
Aphelion:            44.80941351 +/-    0.0000
Period (y)              280.4719 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           29.00983508 +/-    0.0000
Ecliptic Y          -28.83533222 +/-    0.0000
Ecliptic Z           -0.08373539 +/-    0.0000
Ecliptic XDOT         0.00192326 +/-    0.0000
Ecliptic YDOT         0.00195973 +/-    0.0000
Ecliptic ZDOT        -0.00015252 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.90298584 +/-    0.0000
Geocenter to KBO     39.94195708 +/-    0.0000
# Hcoef:  7.49

The following table shows the complete astrometric record for 439858. 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 (439858) followed by the observatory code and reference code for the source of the astrometry.

1999 07  19.52249  21 12 33.26   -16 15 43.8   23.8R 439858    568  Ca7328      
1999 07  19.55661  21 12 33.12   -16 15 44.2         439858    568  Ca7328      
1999 07  19.59801  21 12 32.91   -16 15 45.0         439858    568  Ca7328      
1999 08  11.32449  21 10 44.66   -16 24 06.2   23.4R 439858    675  Ca7328      
1999 08  11.34596  21 10 44.53   -16 24 06.8         439858    675  Ca7328      
1999 08  11.36166  21 10 44.47   -16 24 07.2   23.5R 439858    675  Ca7328      
2000 07  31.12648  21 17 24.58   -15 59 00.3   23.0R 439858    809  Cb7609      
2000 07  31.19929  21 17 24.23   -15 59 02.0   23.2R 439858    809  Cb7609      
2000 07  31.28951  21 17 23.79   -15 59 03.7         439858    809  Cb7609      
2000 08  02.29811  21 17 14.16   -15 59 49.7         439858    809  Cb7609      
2000 08  02.32957  21 17 14.00   -15 59 50.4   23.4R 439858    809  Cb7609      
2000 08  02.36121  21 17 13.84   -15 59 51.1   23.6R 439858    809  Cb7609      
2001 06  28.32151  21 25 29.04   -15 25 57.3         439858    304  Cd2244      
2001 06  28.44590  21 25 28.62   -15 25 59.2         439858    304  Cd2244      
2001 07  20.42748  21 24 02.475  -15 33 09.02  23.3R 439858    568  Cl6330      
2001 07  21.39819  21 23 58.157  -15 33 30.29  23.6R 439858    568  Cl6330      
2001 07  24.48175  21 23 44.14   -15 34 39.0   23.0R 439858    568  Cd2765      
2001 07  24.53294  21 23 43.87   -15 34 40.5         439858    568  Cd2765      
2001 07  24.57425  21 23 43.69   -15 34 41.3   23.1R 439858    568  Cd2765      
2001 07  25.54173  21 23 39.31   -15 35 02.4         439858    568  Cd2765      
2002 08  11.15657  21 28 07.68   -15 19 08.2   22.0R 439858    807  Cg2699      
2002 08  12.09591  21 28 03.16   -15 19 30.6         439858    807  Cg2699      
2002 08  12.19185  21 28 02.68   -15 19 33.1         439858    807  Cg2699      
2004 08  19.37236  21 38 54.39   -14 36 40.5   23.3g 439858    568  C~0VDL      
2004 08  19.39863  21 38 54.23   -14 36 41.3   23.5g 439858    568  C~0VDL      
2004 08  19.42961  21 38 54.11   -14 36 41.9   23.8g 439858    568  C~0VDL      
2004 08  20.40721  21 38 49.45   -14 37 06.4   23.4g 439858    568  C~0VDL      
2006 07  20.44866  21 52 36.23   -13 36 08.9         439858    568  C~0VDL      
2006 07  20.47503  21 52 36.13   -13 36 09.8   24.4r 439858    568  C~0VDL      
2006 07  20.50156  21 52 35.99   -13 36 10.2   24.3r 439858    568  C~0VDL      
2006 07  26.38437  21 52 11.47   -13 38 26.2   24.1r 439858    568  C~0VDL      
2006 07  26.41034  21 52 11.35   -13 38 26.9   24.1r 439858    568  C~0VDL      
2006 07  26.43633  21 52 11.23   -13 38 27.3   23.7r 439858    568  C~0VDL      
2007 09  11.26954  21 54 17.85   -13 32 59.6   23.1r 439858    695  C~0VDL      
2007 09  11.32839  21 54 17.59   -13 33 00.7   22.9r 439858    695  C~0VDL      
2007 09  12.27366  21 54 13.54   -13 33 22.4   22.8r 439858    695  C~0VDL      
2007 09  16.26825  21 53 56.74   -13 34 52.1         439858    675  C~0VDL      
2007 09  18.28116  21 53 48.54   -13 35 35.3         439858    675  C~0VDL      
2015 05  27.361839 22 43 40.80   -09 28 59.8   23.0r 439858    W84  C~1V1R      
2015 05  27.383308 22 43 40.83   -09 28 59.5   23.5r 439858    W84  C~1V1R      
2015 05  27.404799 22 43 40.85   -09 28 59.6   23.1r 439858    W84  C~1V1R      
2015 05  27.426352 22 43 40.89   -09 28 59.3   23.5r 439858    W84  C~1V1R      
2015 05  28.361081 22 43 42.06   -09 28 55.2   23.0r 439858    W84  C~1V1R      

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     0.05       0.00     0.18
  2   0.0001      0.00     0.18       0.00     0.17
  3   0.0002      0.00    -0.11       0.00     0.23
  4   0.0624      0.00     0.57       0.00     0.11
  5   0.0625      0.00     0.21       0.00    -0.01
  6   0.0625      0.00     0.48       0.00    -0.06
  7   1.0338      0.00     0.10       0.00     0.07
  8   1.0340      0.00     0.16       0.00     0.03
  9   1.0343      0.00     0.14       0.00     0.37
 10   1.0398      0.00     0.27       0.00     0.08
 11   1.0399      0.00     0.17       0.00     0.09
 12   1.0399      0.00     0.08       0.00     0.10
 13   1.9433      0.00     0.09       0.00     0.21
 14   1.9437      0.00     0.06       0.00     0.37
 15   2.0038      0.00     0.08       0.00    -0.10
 16   2.0065      0.00     0.19       0.00    -0.09
 17   2.0149      0.00    -0.58       0.00    -0.31
 18   2.0151      0.00    -1.05       0.00    -0.66
 19   2.0152      0.00    -0.86       0.00    -0.54
 20   2.0178      0.00     0.03       0.00     0.12
 21   3.0627      0.00     0.16       0.00    -0.13
 22   3.0652      0.00     0.19       0.00    -0.13
 23   3.0655      0.00     0.04       0.00    -0.34
 24   5.0865      0.00     0.23       0.00     0.26
 25   5.0866      0.00    -0.26       0.00     0.11
 26   5.0867      0.00     0.20       0.00     0.27
 27   5.0893      0.00     0.14       0.00    -0.29
 28   7.0032      0.00     0.36       0.00     0.42
 29   7.0033      0.00     0.49       0.00     0.11
 30   7.0034      0.00     0.03       0.00     0.31
 31   7.0195      0.00     0.29       0.00     0.20
 32   7.0195      0.00     0.19       0.00     0.12
 33   7.0196      0.00     0.10       0.00     0.34
 34   8.1472      0.00     0.01       0.00    -0.19
 35   8.1473      0.00    -0.01       0.00     0.06
 36   8.1499      0.00     0.17       0.00     0.07
 37   8.1608      0.00    -0.13       0.00    -0.30
 38   8.1663      0.00    -0.30       0.00    -0.05
 39  15.8545      0.00    -0.12       0.00    -0.13
 40  15.8545      0.00    -0.07       0.00     0.07
 41  15.8546      0.00    -0.16       0.00    -0.13
 42  15.8546      0.00     0.06       0.00     0.07
 43  15.8572      0.00     0.20       0.00    -0.11

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.

439858    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        42.774    42.774    42.774
ecceobj         0.044     0.044     0.044
incobj          3.184     3.184     3.184
qmin           39.734    39.742    39.728
qmax           45.934    45.936    45.921
amean          42.719    42.719    42.719
amin           42.389    42.389    42.390
amax           43.071    43.071    43.071
emean           0.047     0.047     0.047
emin            0.022     0.022     0.022
emax            0.067     0.067     0.067
imean           2.892     2.892     2.892
imin            1.620     1.620     1.620
imax            4.137     4.137     4.135
excite_mean     0.070     0.070     0.070
fracstop        1.000     1.000     1.000
cjmean          3.081     3.081     3.081

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       180.0     180.0     180.0
kozaiamp        180.0     180.0     180.0