Orbit Fit and Astrometric record for 06BS284

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: 06BS284   
# Created Sat Dec 16 02:37:27 2017
# Orbit generated from Bernstein formalism
# Fitting   24 observations of   25
# Arc:   8.25y
# First observation: 2004/12/13
#  Last observation: 2013/03/14
Preliminary a, adot, b, bdot, g, gdot:
  -0.001973   0.021129   0.000178  -0.001609   0.021339   0.000000
# Chi-squared of fit:    24.08 DOF:   42 RMS:  0.18
# Min/Max residuals:    -0.45    0.42
# Exact a, adot, b, bdot, g, gdot:
  1.413580E-05  1.972189E-02  4.032494E-08 -1.482180E-03  2.137894E-02 -8.205526E-03
# Covariance matrix:
  3.2908E-13 -1.6662E-13 -1.6535E-14  1.2552E-14  6.8083E-15 -9.0125E-13
 -1.6662E-13  1.2225E-13  1.2899E-14 -9.8077E-15  3.4967E-14  7.0581E-13
 -1.6535E-14  1.2899E-14  1.4984E-13 -3.0954E-14  1.1132E-15  8.3462E-14
  1.2552E-14 -9.8077E-15 -3.0954E-14  1.0706E-14 -9.1695E-16 -6.3398E-14
  6.8083E-15  3.4967E-14  1.1132E-15 -9.1695E-16  1.8214E-13  7.3084E-14
 -9.0125E-13  7.0581E-13  8.3462E-14 -6.3398E-14  7.3084E-14  4.5563E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.552673  129.312254    0.730759    0.017985   -0.659722  2453352.883732
# Heliocentric elements and errors
Epoch:              2453350.5000  =  2004/12/11
Mean Anomaly:          320.81080 +/-     0.008
Argument of Peri:      247.86289 +/-     0.009
Long of Asc Node:      328.00284 +/-     0.001
Inclination:             4.56176 +/-     0.000
Eccentricity:         0.44290112 +/-    0.0001
Semi-Major Axis:     60.16610464 +/-    0.0080
Time of Perihelion: 2471906.7476 +/-       1.2
Perihelion:          33.51846926 +/-    0.0078
Aphelion:            86.81374003 +/-    0.0132
Period (y)              466.6981 +/-      0.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -29.48078092 +/-    0.0006
Ecliptic Y           37.15036397 +/-    0.0007
Ecliptic Z            1.26741384 +/-    0.0000
Ecliptic XDOT        -0.00129267 +/-    0.0000
Ecliptic YDOT        -0.00241609 +/-    0.0000
Ecliptic ZDOT        -0.00021813 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   47.44335912 +/-    0.0007
Geocenter to KBO     46.77501023 +/-    0.0009
# Hcoef:  6.73

The following table shows the complete astrometric record for 06BS284. 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 (06BS284) followed by the observatory code and reference code for the source of the astrometry.

2004 12  13.382989 08 48 44.34   +19 25 16.1   22.9V 06BS284   645  C~1rRE      
2004 12  13.383818 08 48 44.34   +19 25 16.1         06BS284   645  C~1rRE      
2004 12  13.386306 08 48 44.32   +19 25 16.1         06BS284   645  C~1rRE      
2006 01  31.38329  08 50 05.61   +19 14 31.6         06BS284   568  C~0X5p      
2006 02  01.42006  08 50 00.86   +19 14 49.4   23.3r 06BS284   568  C~0X5p      
2006 02  01.46631  08 50 00.65   +19 14 50.1   23.3r 06BS284   568  C~0X5p      
2006 02  01.50687  08 50 00.46   +19 14 50.9   23.5r 06BS284   568  C~0X5p      
2006 11  24.48052  08 58 30.56   +18 34 48.5         06BS284   568  C~0X5p      
2006 11  24.53207  08 58 30.49   +18 34 49.0         06BS284   568  C~0X5p      
2006 11  24.58403  08 58 30.43   +18 34 49.4         06BS284   568  C~0X5p      
2007 01  19.30897  08 55 39.36   +18 46 49.5         06BS284   568  C~0X5p      
2007 01  19.35157  08 55 39.18   +18 46 50.1   23.8g 06BS284   568  C~0X5p      
2007 01  19.38436  08 55 39.03   +18 46 50.7   23.8g 06BS284   568  C~0X5p      
2007 01  20.37239  08 55 34.64   +18 47 08.2   24.5g 06BS284   568  C~0X5p      
2007 11  08.42582  09 03 12.15   +18 09 18.9   22.2r 06BS284   695  C~0X5p      
2007 11  09.41513  09 03 12.59   +18 09 17.7   21.9r 06BS284   695  C~0X5p      
2008 05  03.17281  08 55 24.19   +18 38 53.3         06BS284   695  C~0X5p      
2008 05  04.13851  08 55 25.03   +18 38 47.4         06BS284   695  C~0X5p      
2008 12  06.38877  09 07 31.45   +17 45 23.9   23.1R 06BS284   675  C~0X5p      
2008 12  06.39162  09 07 31.46   +17 45 23.9   23.4R 06BS284   675  C~0X5p      
2008 12  06.47828  09 07 31.27   +17 45 24.5   23.4R 06BS284   675  C~0X5p      
2008 12  06.48147  09 07 31.27   +17 45 24.7         06BS284   675  C~0X5p      
2013 03  13.17720  09 20 44.19   +16 20 33.3   23.1R 06BS284   695  C~0udO      
2013 03  14.16653  09 20 40.56   +16 20 48.2         06BS284   695  C~0udO      
2013 03  14.25432  09 20 40.22   +16 20 50.0         06BS284   695  C~0udO      

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     0.09       0.00    -0.23
  2   0.0000      0.00     0.13       0.00    -0.23
  3   0.0000     -0.27    -0.04      -0.08    -0.31
  4   1.1335   1281.03     0.13    -312.43     0.12
  5   1.1363   1211.45    -0.05    -313.39     0.13
  6   1.1364   1208.40     0.04    -313.51     0.06
  7   1.1365   1205.59    -0.01    -313.46     0.17
  8   1.9469   8830.80     0.20    -634.51     0.27
  9   1.9470   8829.70    -0.02    -634.31     0.42
 10   1.9472   8828.77 (  -0.06)   -634.17 (   0.53)
 11   2.0997   6290.07    -0.45    -619.79    -0.03
 12   2.0998   6287.45    -0.25    -619.92    -0.14
 13   2.0999   6285.23    -0.28    -619.93    -0.14
 14   2.1026   6220.42    -0.08    -620.36    -0.04
 15   2.9022  13121.01    -0.03    -965.06     0.32
 16   2.9049  13127.38     0.03    -964.41     0.12
 17   3.3861   6214.61     0.17   -1137.26    -0.22
 18   3.3888   6227.72     0.20   -1139.63    -0.17
 19   3.9809  17099.53    -0.02   -1268.87     0.06
 20   3.9809  17099.67     0.21   -1268.83     0.10
 21   3.9811  17096.88     0.03   -1269.05    -0.14
 22   3.9811  17096.82     0.07   -1268.85     0.05
 23   8.2458  29635.61     0.07   -2725.17    -0.09
 24   8.2486  29580.19     0.10   -2727.08    -0.23
 25   8.2488  29574.87    -0.25   -2726.87     0.16

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.

06BS284    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        59.483    59.505    59.460
ecceobj         0.436     0.436     0.436
incobj          4.579     4.579     4.579
qmin           32.796    32.838    32.896
qmax           90.491    92.084    90.724
amean          57.923    60.615    60.190
amin           54.553    58.648    58.268
amax           62.174    62.905    62.298
emean           0.417     0.445     0.437
emin            0.380     0.424     0.417
emax            0.455     0.465     0.456
imean           6.817     5.937     7.079
imin            5.051     4.124     5.828
imax            8.049     7.812     8.026
excite_mean     0.434     0.457     0.454
fracstop        1.000     1.000     1.000
cjmean          3.022     3.024     3.023

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       184.5     174.7     169.2
kozaiamp        180.0     180.0     180.0