Orbit Fit and Astrometric record for 330836

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: 330836    
# Created Thu Dec 14 02:36:43 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   84 observations of   85
# Arc:  10.26y
# First observation: 2002/02/12
#  Last observation: 2012/05/19
# Chi-squared of fit:   470.46 DOF:  162 RMS:  0.42
# Min/Max residuals:    -2.22    1.02
# Exact a, adot, b, bdot, g, gdot:
  2.989599E-05  1.521087E-01 -8.480475E-07 -3.836969E-03  7.856130E-02 -3.463751E-02
# 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
   19.145550  146.160897    0.039099    0.322679   -0.929755  2452318.010253
# Heliocentric elements and errors
Epoch:              2452318.5000  =  2002/02/13
Mean Anomaly:          342.45402 +/-     0.000
Argument of Peri:      140.12200 +/-     0.000
Long of Asc Node:       50.37577 +/-     0.000
Inclination:            17.86871 +/-     0.000
Eccentricity:         0.42217288 +/-    0.0000
Semi-Major Axis:     21.60946864 +/-    0.0000
Time of Perihelion: 2454106.7968 +/-       0.0
Perihelion:          12.48653713 +/-    0.0000
Aphelion:            30.73240015 +/-    0.0000
Period (y)              100.4556 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -10.78261480 +/-    0.0000
Ecliptic Y            7.28196514 +/-    0.0000
Ecliptic Z            4.17470656 +/-    0.0000
Ecliptic XDOT        -0.00204965 +/-    0.0000
Ecliptic YDOT        -0.00501435 +/-    0.0000
Ecliptic ZDOT        -0.00052200 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   13.66464007 +/-    0.0000
Geocenter to KBO     12.72903124 +/-    0.0000
# Hcoef:  9.73

The following table shows the complete astrometric record for 330836. 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 (330836) followed by the observatory code and reference code for the source of the astrometry.

2002 02  12.50951  10 23 18.53   +30 40 28.4   20.5R 330836    644  C~0X6b      
2002 02  12.52531  10 23 18.31   +30 40 30.5         330836    644  C~0X6b      
2002 03  20.25591  10 15 08.47   +31 07 08.0   21. R 330836    644  C~0X6b      
2002 03  20.28963  10 15 08.12   +31 07 08.1         330836    644  C~0X6b      
2005 06  05.203398 11 53 58.43   +16 48 51.1   21.4V 330836    645  C~1SyT      
2005 06  05.204227 11 53 58.43   +16 48 51.0   21.1V 330836    645  C~1SyT      
2005 06  05.206715 11 53 58.43   +16 48 50.9   21.9V 330836    645  C~1SyT      
2005 06  06.151050 11 53 59.59   +16 47 14.2   21.3V 330836    645  C~1SyT      
2005 06  06.151879 11 53 59.60   +16 47 14.1   21.1V 330836    645  C~1SyT      
2005 06  06.154367 11 53 59.60   +16 47 13.8   21.8V 330836    645  C~1SyT      
2008 03  10.42621  13 48 49.35   -01 35 21.8   21.1V 330836    G96  C~0AGV      
2008 03  10.43696  13 48 49.28   -01 35 21.1   21.2V 330836    G96  C~0AGV      
2008 03  10.44760  13 48 49.14   -01 35 20.9   21.4V 330836    G96  C~0AGV      
2008 03  10.45838  13 48 49.03   -01 35 20.1   21.0V 330836    G96  C~0AGV      
2008 03  27.25247  13 45 47.47   -01 19 45.5   20.9V 330836    691  C~0AGV      
2008 03  27.26763  13 45 47.29   -01 19 44.2   20.8V 330836    691  C~0AGV      
2008 03  27.28280  13 45 47.09   -01 19 43.2   20.7V 330836    691  C~0AGV      
2008 04  01.24699  13 44 45.04   -01 15 03.3   20.9V 330836    691  C~0AGV      
2008 04  01.26982  13 44 44.76   -01 15 02.3   21.1V 330836    691  C~0AGW      
2008 04  01.28496  13 44 44.57   -01 15 01.3   21.2V 330836    691  C~0AGW      
2008 04  04.24286  13 44 06.30   -01 12 16.6   20.7V 330836    691  C~0AGW      
2008 04  04.26378  13 44 06.05   -01 12 16.3   20.8V 330836    691  C~0AGW      
2008 04  04.28542  13 44 05.76   -01 12 14.7   20.8V 330836    691  C~0AGW      
2009 04  25.86493  14 12 20.92   -07 08 08.7   20.2R 330836    069  C~06i2      
2009 04  25.87550  14 12 20.77   -07 08 08.2   20.1R 330836    069  C~079B      
2009 04  25.88608  14 12 20.65   -07 08 08.8   20.2R 330836    069  C~06i2      
2009 04  25.89634  14 12 20.47   -07 08 07.6   20.1R 330836    069  C~079B      
2009 04  25.90661  14 12 20.36   -07 08 07.5   20.2R 330836    069  C~06i2      
2009 04  28.84807  14 11 40.24   -07 06 11.2   19.9R 330836    069  C~06i2      
2009 04  28.85870  14 11 40.11   -07 06 10.5   19.9R 330836    069  C~079B      
2009 04  28.86998  14 11 39.79   -07 06 10.9   19.9R 330836    069  C~06i2      
2009 04  28.89083  14 11 39.61   -07 06 10.2   19.8R 330836    069  C~06i2      
2009 04  28.90929  14 11 39.36   -07 06 10.7   19.8R 330836    152  C~0Abf      
2009 04  28.92860  14 11 39.08   -07 06 10.0   19.8R 330836    152  C~0Abf      
2009 04  30.89976  14 11 12.18   -07 04 54.5   19.9R 330836    069  C~0Auz      
2009 05  01.91252  14 10 58.60   -07 04 17.5   19.8R 330836    069  C~0AGW      
2009 05  01.94088  14 10 58.18   -07 04 16.5   20.0R 330836    069  C~0AGW      
2009 05  25.25433  14 06 08.24   -06 54 24.2   22.0V 330836    G96  C~0AGW      
2009 05  25.26224  14 06 08.17   -06 54 23.9   20.8V 330836    G96  C~0AGW      
2009 05  25.27634  14 06 07.99   -06 54 24.1   21.5V 330836    G96  C~0AGW      
2009 05  25.28440  14 06 07.92   -06 54 24.0   21.9V 330836    G96  C~0AGW      
2010 04  20.37696  14 46 16.24   -13 01 36.4   20.6R 330836    688  C~0GWf      
2010 04  20.43649  14 46 15.44   -13 01 34.2         330836    688  C~0GWf      
2010 05  05.95491  14 42 44.07   -12 52 52.5   19.6R 330836    069  C~0HI4      
2010 05  05.96154  14 42 44.02   -12 52 52.0   19.8R 330836    069  C~0HI4      
2010 05  05.97444  14 42 43.78   -12 52 47.1   19.8R 330836    069  C~0HI4      
2010 05  10.23972  14 41 45.37   -12 50 35.4   20.6R 330836    290  C~0K91      
2010 05  10.24509  14 41 45.32   -12 50 35.4   20.7R 330836    290  C~0K91      
2010 05  10.24889  14 41 45.23   -12 50 34.9   20.7R 330836    290  C~0K91      
2010 05  10.25269  14 41 45.20   -12 50 34.9   20.6R 330836    290  C~0K91      
2010 05  10.25648  14 41 45.13   -12 50 35.0   20.3R 330836    290  C~0K91      
2010 05  10.26027  14 41 45.08   -12 50 34.2   20.6R 330836    290  C~0K91      
2010 05  10.26406  14 41 45.01   -12 50 34.1   20.5R 330836    290  C~0K91      
2010 05  10.26786  14 41 44.95   -12 50 34.0   20.4R 330836    290  C~0K91      
2010 05  10.27166  14 41 44.95   -12 50 34.0   20.5R 330836    290  C~0K91      
2010 05  10.27545  14 41 44.89   -12 50 33.8   20.6R 330836    290  C~0K91      
2010 05  10.27924  14 41 44.82   -12 50 34.0   20.7R 330836    290  C~0K91      
2010 05  10.28303  14 41 44.79   -12 50 33.5   20.7R 330836    290  C~0K91      
2010 05  11.24907  14 41 31.64   -12 50 03.8   20.3R 330836    290  C~0K91      
2010 05  11.25384  14 41 31.57   -12 50 03.6   20.3R 330836    290  C~0K91      
2010 05  11.25764  14 41 31.52   -12 50 03.4   20.6R 330836    290  C~0K91      
2010 05  11.26144  14 41 31.48   -12 50 03.6   20.1R 330836    290  C~0K91      
2010 05  11.26522  14 41 31.41   -12 50 03.2   20.4R 330836    290  C~0K91      
2010 05  11.26902  14 41 31.34   -12 50 03.0   20.0R 330836    290  C~0K91      
2010 05  11.27281  14 41 31.31   -12 50 03.1   20.3R 330836    290  C~0K91      
2010 05  11.27661  14 41 31.26   -12 50 02.9   20.3R 330836    290  C~0K91      
2010 05  11.28041  14 41 31.20   -12 50 02.9   20.3R 330836    290  C~0K91      
2010 05  11.28419  14 41 31.15   -12 50 02.8   20.5R 330836    290  C~0K91      
2010 05  11.28799  14 41 31.10   -12 50 02.4   20.2R 330836    290  C~0K91      
2010 05  11.29178  14 41 31.04   -12 50 02.4   20.3R 330836    290  C~0K91      
2010 05  20.23487  14 39 32.29   -12 45 46.1   21.4V 330836    G96  C~0HYQ      
2010 05  20.24081  14 39 32.22   -12 45 45.9   20.9V 330836    G96  C~0HYQ      
2010 05  20.24677  14 39 32.14   -12 45 45.5   20.3V 330836    G96  C~0HYQ      
2010 05  20.25274  14 39 32.04   -12 45 46.0   21.1V 330836    G96  C~0HYQ      
2011 04  30.38433  15 16 23.16   -18 13 26.7   20.5R 330836    290  C~0VXc      
2011 04  30.39237  15 16 23.08   -18 13 26.4   20.7R 330836    290  C~0VXc      
2011 05  01.28336  15 16 11.03   -18 13 05.8   20.5R 330836    290  C~0VXc      
2011 05  01.29501  15 16 10.88   -18 13 05.3   20.4R 330836    290  C~0VXc      
2011 05  01.30126  15 16 10.78   -18 13 04.2   20.5R 330836    290  C~0VXc      
2012 04  24.40942  15 49 27.03   -22 51 10.3   20.7R 330836    290  C~0gaN      
2012 04  24.41322  15 49 26.97   -22 51 10.2   20.6R 330836    290  C~0gaN      
2012 05  19.39634  15 43 51.177  -22 46 01.40  21.1w 330836    F51  C~0gv1      
2012 05  19.41181  15 43 50.944  -22 46 01.16  21.1w 330836    F51  C~0gv1      
2012 05  19.42729  15 43 50.737  -22 46 00.77  21.1w 330836    F51  C~0gv1      
2012 05  19.44276  15 43 50.478  -22 46 00.50  21.2w 330836    F51  C~0gv1      

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    -0.60       0.00     0.76
  2   0.0000      0.00     0.36       0.00     0.79
  3   0.0979      0.00    -0.45       0.00     0.02
  4   0.0980      0.00     0.49       0.00    -0.09
  5   3.3092      0.00    -0.12       0.00    -0.09
  6   3.3092      0.00    -0.13       0.00    -0.11
  7   3.3092      0.00    -0.16       0.00     0.05
  8   3.3118      0.00     0.17       0.00     0.01
  9   3.3118      0.00     0.31       0.00    -0.01
 10   3.3118      0.00     0.27       0.00    -0.05
 11   6.0723      0.00     0.01       0.00    -0.00
 12   6.0724      0.00     0.49       0.00     0.13
 13   6.0724      0.00    -0.10       0.00    -0.23
 14   6.0724      0.00    -0.23       0.00     0.00
 15   6.1184      0.00     0.24       0.00    -0.07
 16   6.1184      0.00     0.36       0.00     0.37
 17   6.1185      0.00     0.18       0.00     0.51
 18   6.1321      0.00     0.01       0.00     0.02
 19   6.1321      0.00     0.27       0.00    -0.26
 20   6.1322      0.00     0.37       0.00    -0.11
 21   6.1403      0.00    -0.36       0.00     0.38
 22   6.1403      0.00     0.06       0.00    -0.47
 23   6.1404      0.00     0.03       0.00    -0.05
 24   7.1988      0.00     0.46       0.00     0.48
 25   7.1988      0.00     0.40       0.00     0.55
 26   7.1988      0.00     0.80       0.00    -0.47
 27   7.1989      0.00     0.22       0.00     0.32
 28   7.1989      0.00     0.70       0.00     0.00
 29   7.2070      0.00     0.58       0.00     0.56
 30   7.2070      0.00     0.83       0.00     0.85
 31   7.2070      0.00    -1.64       0.00     0.02
 32   7.2071      0.00    -0.03       0.00    -0.08
 33   7.2071      0.00     0.04       0.00    -1.30
 34   7.2072      0.00    -0.16       0.00    -1.34
 35   7.2126      0.00    -2.22       0.00    -0.20
 36   7.2153      0.00    -0.42       0.00    -0.35
 37   7.2154      0.00    -0.91       0.00    -0.38
 38   7.2792      0.00    -0.34       0.00     0.30
 39   7.2793      0.00    -0.07       0.00     0.50
 40   7.2793      0.00    -0.42       0.00     0.13
 41   7.2793      0.00    -0.13       0.00     0.13
 42   8.1831      0.00     0.51       0.00     0.01
 43   8.1832      0.00     0.54       0.00     0.19
 44   8.2257      0.00    -0.25       0.00     0.01
 45   8.2257      0.00     0.39       0.00     0.29
 46   8.2258      0.00 (  -0.52)      0.00 (   4.76)
 47   8.2375      0.00     0.12       0.00    -0.39
 48   8.2375      0.00     0.49       0.00    -0.56
 49   8.2375      0.00    -0.07       0.00    -0.18
 50   8.2375      0.00     0.27       0.00    -0.29
 51   8.2375      0.00     0.01       0.00    -0.51
 52   8.2375      0.00     0.05       0.00     0.17
 53   8.2375      0.00    -0.21       0.00     0.15
 54   8.2375      0.00    -0.32       0.00     0.13
 55   8.2375      0.00     0.48       0.00     0.01
 56   8.2376      0.00     0.37       0.00     0.10
 57   8.2376      0.00     0.11       0.00    -0.22
 58   8.2376      0.00     0.45       0.00     0.16
 59   8.2402      0.00     0.36       0.00    -0.19
 60   8.2402      0.00     0.30       0.00    -0.14
 61   8.2402      0.00     0.34       0.00    -0.06
 62   8.2403      0.00     0.53       0.00    -0.38
 63   8.2403      0.00     0.27       0.00    -0.09
 64   8.2403      0.00     0.01       0.00    -0.01
 65   8.2403      0.00     0.35       0.00    -0.23
 66   8.2403      0.00     0.39       0.00    -0.14
 67   8.2403      0.00     0.28       0.00    -0.26
 68   8.2403      0.00     0.31       0.00    -0.28
 69   8.2403      0.00     0.35       0.00     0.01
 70   8.2403      0.00     0.24       0.00    -0.11
 71   8.2648      0.00     0.37       0.00    -0.18
 72   8.2648      0.00     0.49       0.00    -0.14
 73   8.2649      0.00     0.46       0.00     0.11
 74   8.2649      0.00     0.14       0.00    -0.55
 75   9.2098      0.00    -0.28       0.00    -0.08
 76   9.2098      0.00     0.18       0.00     0.03
 77   9.2122      0.00     0.09       0.00    -0.16
 78   9.2123      0.00     0.26       0.00     0.07
 79   9.2123      0.00     0.06       0.00     1.02
 80  10.1955      0.00     0.56       0.00     0.26
 81  10.1955      0.00     0.37       0.00     0.34
 82  10.2639      0.00     0.21       0.00     0.11
 83  10.2639      0.00     0.05       0.00     0.07
 84  10.2640      0.00     0.27       0.00     0.18
 85  10.2640      0.00    -0.28       0.00     0.17

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.

330836    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        21.467    21.467    21.467
ecceobj         0.419     0.419     0.419
incobj         17.869    17.869    17.869
qmin           12.323    12.321    12.325
qmax           30.684    30.673    31.585
amean          21.356    21.387    21.886
amin           21.149    21.096    21.149
amax           21.666    21.662    22.356
emean           0.406     0.406     0.403
emin            0.394     0.385     0.385
emax            0.421     0.421     0.421
imean          17.744    17.654    17.423
imin           17.062    17.062    16.526
imax           18.219    18.305    18.665
excite_mean     0.508     0.507     0.502
fracstop        0.003     0.002     0.008
cjmean          2.870     2.870     2.860

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       160.4     154.4     200.5
kozaiamp         21.3      14.2      63.1