Orbit Fit and Astrometric record for 06BR284

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: 06BR284   
# Created Sat Oct 21 01:37:37 2017
# Orbit generated from Bernstein formalism
# Fitting   34 observations of   35
# Arc:   7.12y
# First observation: 2004/02/17
#  Last observation: 2011/04/01
Preliminary a, adot, b, bdot, g, gdot:
   0.000098   0.023872   0.000000  -0.000134   0.024261   0.000000
# Chi-squared of fit:   103.66 DOF:   62 RMS:  0.31
# Min/Max residuals:    -0.60    0.61
# Exact a, adot, b, bdot, g, gdot:
  1.728195E-05  2.398135E-02  7.991511E-07 -1.354856E-04  2.427252E-02 -1.883521E-04
# Covariance matrix:
  2.2657E-13 -1.0920E-13 -6.2599E-16  4.9629E-16 -2.8930E-14 -4.5266E-13
 -1.0920E-13  8.7638E-14  6.0115E-16 -5.1999E-16  3.1058E-15  4.4688E-13
 -6.2599E-16  6.0115E-16  1.4497E-13 -3.3272E-14  1.4896E-16  3.5512E-15
  4.9629E-16 -5.1999E-16 -3.3272E-14  1.0892E-14  5.1230E-17 -2.9982E-15
 -2.8930E-14  3.1058E-15  1.4896E-16  5.1230E-17  1.0318E-13  6.0171E-14
 -4.5266E-13  4.4688E-13  3.5512E-15 -2.9982E-15  6.0171E-14  2.6192E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.130203  121.536783   -0.436863    0.017442   -0.881179  2453052.786101
# Heliocentric elements and errors
Epoch:              2453050.5000  =  2004/02/15
Mean Anomaly:            1.47617 +/-     0.079
Argument of Peri:      104.97909 +/-     0.088
Long of Asc Node:       15.52420 +/-     0.012
Inclination:             1.15460 +/-     0.000
Eccentricity:         0.04595765 +/-    0.0000
Semi-Major Axis:     44.11295421 +/-    0.0027
Time of Perihelion: 2452611.6851 +/-      23.5
Perihelion:          42.08562663 +/-    0.0033
Aphelion:            46.14028179 +/-    0.0035
Period (y)              292.9931 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -22.38224143 +/-    0.0003
Ecliptic Y           35.63197545 +/-    0.0005
Ecliptic Z            0.81266941 +/-    0.0000
Ecliptic XDOT        -0.00229830 +/-    0.0000
Ecliptic YDOT        -0.00143932 +/-    0.0000
Ecliptic ZDOT        -0.00001555 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.08637354 +/-    0.0004
Geocenter to KBO     41.19884888 +/-    0.0005
# Hcoef:  6.85

The following table shows the complete astrometric record for 06BR284. 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 (06BR284) followed by the observatory code and reference code for the source of the astrometry.

2004 02  17.285358 08 16 10.87   +20 55 10.7   22.5V 06BR284   645  C~2Ku0      
2004 02  17.286187 08 16 10.87   +20 55 10.6   23.4V 06BR284   645  C~2Ku0      
2004 02  17.288675 08 16 10.87   +20 55 10.7   24.1V 06BR284   645  C~2Ku0      
2004 03  18.223573 08 14 23.52   +21 00 15.8   22.5V 06BR284   645  C~1GH3      
2004 03  18.224402 08 14 23.51   +21 00 15.8   22.7V 06BR284   645  C~1GH3      
2004 03  18.225232 08 14 23.50   +21 00 15.8   23.7V 06BR284   645  C~1GH3      
2006 01  31.35788  08 28 56.90   +20 11 34.2         06BR284   568  C~0WvG      
2006 02  01.39642  08 28 51.64   +20 11 52.3   23.0r 06BR284   568  C~0WvG      
2006 02  01.44282  08 28 51.41   +20 11 53.4   23.2r 06BR284   568  C~0WvG      
2006 02  01.48348  08 28 51.22   +20 11 54.0   23.0r 06BR284   568  C~0WvG      
2006 11  23.55552  08 39 07.21   +19 33 28.6         06BR284   568  C~0WvG      
2006 11  24.49682  08 39 05.73   +19 33 35.5         06BR284   568  C~0WvG      
2006 11  24.51578  08 39 05.71   +19 33 35.6   22.6i 06BR284   568  C~0WvG      
2006 11  24.54839  08 39 05.63   +19 33 35.9         06BR284   568  C~0WvG      
2006 11  24.56741  08 39 05.62   +19 33 36.5   22.8i 06BR284   568  C~0WvG      
2006 11  24.60038  08 39 05.54   +19 33 36.8         06BR284   568  C~0WvG      
2006 11  24.61948  08 39 05.53   +19 33 36.5   22.5i 06BR284   568  C~0WvG      
2007 01  19.31823  08 35 39.58   +19 47 03.7         06BR284   568  C~0WvG      
2007 01  19.36099  08 35 39.36   +19 47 04.7         06BR284   568  C~0WvG      
2007 01  19.39365  08 35 39.22   +19 47 05.8   23.8r 06BR284   568  C~0WvG      
2007 02  16.24594  08 33 20.42   +19 55 18.7   22.0r 06BR284   695  C~0WvG      
2007 02  16.32901  08 33 20.00   +19 55 20.0   21.8r 06BR284   695  C~0WvG      
2007 02  16.42703  08 33 19.54   +19 55 21.5   21.8r 06BR284   695  C~0WvG      
2007 02  21.35261  08 32 56.96   +19 56 38.7   22.7R 06BR284   675  C~0WvG      
2007 02  21.40456  08 32 56.71   +19 56 39.6         06BR284   675  C~0WvG      
2008 05  03.15264  08 36 23.53   +19 41 49.4         06BR284   695  C~0WvG      
2008 05  03.16342  08 36 23.53   +19 41 49.3         06BR284   695  C~0WvG      
2008 12  21.48653  08 48 58.70   +18 54 57.3         06BR284   695  C~0WvG      
2008 12  21.54649  08 48 58.48   +18 54 58.2         06BR284   695  C~0WvG      
2008 12  22.39824  08 48 55.35   +18 55 11.4         06BR284   695  C~0WvG      
2008 12  22.40381  08 48 55.33   +18 55 11.5         06BR284   695  C~0WvG      
2010 11  05.58765  09 01 07.21   +18 03 00.0         06BR284   568  C~0WvG      
2010 11  05.62187  09 01 07.24   +18 02 59.9         06BR284   568  C~0WvG      
2011 04  01.29401  08 53 03.44   +18 36 38.0         06BR284   568  C~0WvG      
2011 04  01.33507  08 53 03.36   +18 36 38.2         06BR284   568  C~0WvG      

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    -0.34       0.00    -0.18
  2   0.0000      0.02    -0.27      -0.10    -0.28
  3   0.0000      0.00    -0.12       0.00    -0.18
  4   0.0820  -1533.94     0.29     -35.35    -0.54
  5   0.0820  -1534.08     0.18     -35.38    -0.57
  6   0.0820  -1534.21     0.07     -35.41    -0.60
  7   1.9550  11082.71    -0.10     -45.42    -0.15
  8   1.9579  11006.26    -0.02     -45.76    -0.09
  9   1.9580  11002.84     0.04     -45.47     0.22
 10   1.9581  11000.10     0.32     -45.54     0.19
 11   2.7660  20041.95     0.52    -114.53     0.09
 12   2.7685  20019.75     0.26    -113.21     0.12
 13   2.7686  20019.45     0.43    -113.19     0.12
 14   2.7687  20018.27     0.07    -113.19     0.08
 15   2.7687  20017.98     0.26    -112.64     0.60
 16   2.7688  20016.80    -0.09    -112.64     0.57
 17   2.7689  20016.74     0.34    -112.97     0.22
 18   2.9214  16973.85    -0.48     -70.60     0.43
 19   2.9215  16970.57    -0.56     -70.42     0.61
 20   2.9216  16968.37 (  -0.32)    -69.85 (   1.19)
 21   2.9978  14936.97     0.38     -81.76     0.39
 22   2.9981  14930.88     0.06     -81.97     0.27
 23   2.9983  14924.19     0.15     -82.12     0.24
 24   3.0118  14594.91    -0.28     -86.25     0.28
 25   3.0120  14591.25    -0.51     -86.25     0.35
 26   4.2077  17658.33     0.24    -218.95    -0.16
 27   4.2077  17658.35     0.04    -219.05    -0.23
 28   4.8438  28855.09    -0.31    -139.42    -0.18
 29   4.8440  28851.78    -0.27    -139.39    -0.18
 30   4.8463  28804.55    -0.40    -138.67    -0.18
 31   4.8463  28804.24    -0.39    -138.65    -0.16
 32   6.7168  39980.59    -0.00    -252.90    -0.26
 33   6.7169  39981.04     0.09    -252.88    -0.27
 34   7.1184  32580.05     0.17    -250.21    -0.28
 35   7.1185  32578.87     0.29    -250.33    -0.32

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.

06BR284    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.917    43.925    43.909
ecceobj         0.042     0.042     0.042
incobj          1.156     1.156     1.156
qmin           41.007    40.974    40.972
qmax           46.976    46.965    46.922
amean          43.866    43.873    43.858
amin           43.522    43.526    43.508
amax           44.220    44.232    44.218
emean           0.046     0.046     0.046
emin            0.030     0.029     0.030
emax            0.062     0.062     0.062
imean           1.808     1.809     1.808
imin            1.049     1.051     1.048
imax            2.418     2.417     2.419
excite_mean     0.057     0.057     0.057
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       165.6     166.0     165.5
kozaiamp        179.9     180.0     180.0