Orbit Fit and Astrometric record for 208996

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: 208996    
# Created Sun Nov  2 01:36:51 2014
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting  104 observations of  104
# Arc:  18.01y
# First observation: 1996/03/19
#  Last observation: 2014/03/22
# Chi-squared of fit:   529.83 DOF:  202 RMS:  0.40
# Min/Max residuals:    -1.83    2.06
# Exact a, adot, b, bdot, g, gdot:
  1.354992E-05  1.780869E-02 -2.603771E-06 -3.821165E-03  2.170604E-02 -1.303600E-03
# 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
   -6.484575   98.782643   -0.983963   -0.020294   -0.177713  2450161.663910
# Heliocentric elements and errors
Epoch:              2450162.5000  =  1996/03/20
Mean Anomaly:          198.56896 +/-     0.000
Argument of Peri:       15.48707 +/-     0.000
Long of Asc Node:      252.10830 +/-     0.000
Inclination:            13.60220 +/-     0.000
Eccentricity:         0.18308683 +/-    0.0000
Semi-Major Axis:     39.32077984 +/-    0.0000
Time of Perihelion: 2490547.1332 +/-       0.0
Perihelion:          32.12166292 +/-    0.0000
Aphelion:            46.51989676 +/-    0.0000
Period (y)              246.5707 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           -7.98544715 +/-    0.0000
Ecliptic Y           45.25784024 +/-    0.0000
Ecliptic Z           -5.20307591 +/-    0.0000
Ecliptic XDOT        -0.00217935 +/-    0.0000
Ecliptic YDOT        -0.00055573 +/-    0.0000
Ecliptic ZDOT        -0.00046052 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   46.25056009 +/-    0.0000
Geocenter to KBO     46.07021920 +/-    0.0000
# Hcoef:  3.74

The following table shows the complete astrometric record for 208996. 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 (208996) followed by the observatory code and reference code for the source of the astrometry.

1996 03  19.16319  06 36 26.97   +16 40 38.4         208996    261   x1751      
2001 12  16.35892  07 07 14.79   +14 39 55.5   20.1R 208996    644  Ch6172      
2001 12  16.37992  07 07 14.66   +14 39 56.0   20.1R 208996    644  Ch6172      
2001 12  16.40222  07 07 14.59   +14 39 56.2   19.8R 208996    644  Ch6172      
2001 12  28.32427  07 06 19.85   +14 40 27.1   19.7R 208996    644  Cp5837      
2002 02  06.10881  07 03 18.42   +14 45 21.8   20.1R 208996    644  Ch6172      
2002 02  06.13019  07 03 18.27   +14 45 22.0   20.1R 208996    644  Ch6172      
2002 02  06.15300  07 03 18.21   +14 45 22.5   19.8R 208996    644  Ch6172      
2003 01  13.27563  07 09 20.30   +14 22 04.4   20.2R 208996    644  Ch1861      
2003 01  13.34172  07 09 19.98   +14 22 04.8   20.2R 208996    644  Ch1861      
2003 01  13.40470  07 09 19.68   +14 22 05.2   20.2R 208996    644  Ch1861      
2003 01  26.22365  07 08 20.39   +14 23 52.3   20.2R 208996    675  Ch1861      
2003 01  26.26909  07 08 20.17   +14 23 52.6         208996    675  Ch1861      
2003 01  26.45326  07 08 19.38   +14 23 54.5         208996    675  Ch1861      
2003 03  06.16884  07 06 06.84   +14 30 44.9   19.5R 208996    662  Ch6172      
2003 03  06.25617  07 06 06.65   +14 30 45.6         208996    662  Ch6172      
2003 03  23.12509  07 05 43.90   +14 33 37.5   20.5R 208996    673  Ch6172      
2003 03  23.13495  07 05 43.89   +14 33 37.5         208996    673  Ch6172      
2003 03  23.21667  07 05 43.82   +14 33 38.3         208996    673  Ch6172      
2003 03  23.22384  07 05 43.80   +14 33 38.4         208996    673  Ch6172      
2003 03  24.18704  07 05 43.30   +14 33 47.2   20.5R 208996    673  Ch6172      
2003 03  24.21424  07 05 43.28   +14 33 47.6         208996    673  Ch6172      
2003 03  25.12778  07 05 42.85   +14 33 56.4   21.0R 208996    673  Ch6172      
2003 03  25.14039  07 05 42.86   +14 33 56.4         208996    673  Ch6172      
2003 03  25.15278  07 05 42.84   +14 33 56.6         208996    673  Ch6172      
2003 04  01.21262  07 05 42.09   +14 34 58.8   19.9R 208996    675  Ch6172      
2003 04  02.15123  07 05 42.33   +14 35 06.4   19.9R 208996    675  Ch6172      
2003 10  28.19289  07 18 04.97   +14 03 37.4   20.3R 208996    621  Cj0464      
2003 11  05.19272  07 17 55.05   +14 02 16.7         208996    621  Cj0464      
2003 11  06.18870  07 17 53.43   +14 02 07.9         208996    621  Cj0464      
2004 12  11.02096  07 20 20.43   +13 38 53.7         208996    621  Cm2693      
2004 12  11.05604  07 20 20.28   +13 38 53.6   20. R 208996    621  Cm2693      
2004 12  11.37681  07 20 18.96   +13 38 54.3   20.0R 208996    290  Cm4079      
2004 12  11.42451  07 20 18.77   +13 38 54.4   20.1R 208996    290  Cm4079      
2004 12  17.92615  07 19 51.19   +13 39 02.7   19.7R 208996    J86  Cz6609      
2004 12  17.92969  07 19 51.16   +13 39 02.9   19.4R 208996    J86  Cz6609      
2004 12  17.93323  07 19 51.16   +13 39 02.9   19.9R 208996    J86  Cz6609      
2004 12  17.98907  07 19 50.91   +13 39 02.9   19.9R 208996    J86  Cz6609      
2004 12  17.99263  07 19 50.87   +13 39 02.7   20.1R 208996    J86  Cz6609      
2004 12  17.99617  07 19 50.87   +13 39 02.9   19.4R 208996    J86  Cz6609      
2004 12  17.99971  07 19 50.86   +13 39 02.9   19.9R 208996    J86  Cz6609      
2004 12  18.00325  07 19 50.84   +13 39 02.9   20.1R 208996    J86  Cz6609      
2004 12  18.06050  07 19 50.58   +13 39 03.0   19.8R 208996    J86  Cz6609      
2004 12  18.06943  07 19 50.55   +13 39 03.1   19.9R 208996    J86  Cz6609      
2004 12  19.17120  07 19 45.71   +13 39 05.8   19.7R 208996    J86  Cz6609      
2004 12  19.17590  07 19 45.68   +13 39 05.2   19.9R 208996    J86  Cz6609      
2004 12  19.18050  07 19 45.67   +13 39 05.7   19.7R 208996    J86  Cz6609      
2004 12  19.18404  07 19 45.66   +13 39 05.1   19.6R 208996    J86  Cz6609      
2004 12  20.08409  07 19 41.66   +13 39 08.0   19.9R 208996    J86  Cz6609      
2004 12  20.08764  07 19 41.64   +13 39 07.9   19.9R 208996    J86  Cz6609      
2004 12  20.09118  07 19 41.64   +13 39 08.1   19.3R 208996    J86  Cz6609      
2004 12  20.09472  07 19 41.62   +13 39 08.1   19.9R 208996    J86  Cz6609      
2004 12  20.09826  07 19 41.59   +13 39 08.1   20.0R 208996    J86  Cz6609      
2004 12  20.15610  07 19 41.33   +13 39 08.2   19.9R 208996    J86  Cz6609      
2004 12  20.15964  07 19 41.30   +13 39 08.0   19.9R 208996    J86  Cz6609      
2004 12  20.16318  07 19 41.30   +13 39 08.3   19.8R 208996    J86  Cz6609      
2004 12  20.16672  07 19 41.28   +13 39 08.3   19.8R 208996    J86  Cz6609      
2006 02  25.14819  07 19 08.05   +13 28 30.7   20.1R 208996    688  Cq6038      
2006 02  25.22325  07 19 07.83   +13 28 31.7         208996    688  Cq6038      
2008 12  20.09395  07 36 37.48   +12 13 18.8   20.1V 208996    A55  C~02Oh      
2008 12  21.06016  07 36 33.26   +12 13 22.8   20.4V 208996    A55  C~02Oh      
2009 02  18.79080  07 32 07.23   +12 23 25.3   19.6C 208996    B42  C~04Z4      
2009 02  18.80614  07 32 07.18   +12 23 25.7   19.4C 208996    B42  C~04Z4      
2009 02  18.89602  07 32 06.89   +12 23 27.8   20.2R 208996    130  C~04Z4      
2010 11  08.34906  07 47 08.348  +11 31 24.57        208996    309  C~0X4z      
2010 11  08.34972  07 47 08.348  +11 31 24.58        208996    309  C~0X4z      
2010 11  08.35039  07 47 08.349  +11 31 24.55        208996    309  C~0X4z      
2010 11  08.35138  07 47 08.347  +11 31 24.52        208996    309  C~0X4z      
2010 11  08.35204  07 47 08.351  +11 31 24.46        208996    309  C~0X4z      
2010 11  08.35272  07 47 08.347  +11 31 24.48        208996    309  C~0X4z      
2010 11  08.35400  07 47 08.347  +11 31 24.47        208996    309  C~0X4z      
2010 11  08.35509  07 47 08.348  +11 31 24.48        208996    309  C~0X4z      
2010 11  08.35619  07 47 08.342  +11 31 24.48        208996    309  C~0X4z      
2010 11  08.35729  07 47 08.337  +11 31 24.45        208996    309  C~0X4z      
2010 11  08.35796  07 47 08.339  +11 31 24.45        208996    309  C~0X4z      
2010 11  08.35865  07 47 08.338  +11 31 24.43        208996    309  C~0X4z      
2010 11  08.35978  07 47 08.335  +11 31 24.44        208996    309  C~0X4z      
2010 11  08.36091  07 47 08.334  +11 31 24.45        208996    309  C~0X4z      
2010 11  08.36206  07 47 08.334  +11 31 24.38        208996    309  C~0X4z      
2011 01  05.33251  07 43 55.61   +11 29 59.6   20.2  208996    I40  C~0UoJ      
2011 01  05.33412  07 43 55.62   +11 29 59.5   20.2V 208996    I40  C~0UoJ      
2011 01  05.33568  07 43 55.60   +11 29 59.4   19.9R 208996    I40  C~0UoJ      
2011 01  05.33791  07 43 55.49   +11 30 00.0   19.0I 208996    I40  C~0UoJ      
2012 01  14.15166  07 47 31.05   +11 08 26.5   19.4R 208996    735  C~0dMu      
2012 01  14.16516  07 47 30.93   +11 08 25.9   20.2R 208996    735  C~0dMu      
2012 01  14.18105  07 47 30.91   +11 08 25.1   20.3R 208996    735  C~0dMu      
2012 01  15.24009  07 47 25.88   +11 08 37.5   20.3R 208996    735  C~0dMu      
2012 01  15.25347  07 47 25.81   +11 08 37.6   19.8R 208996    735  C~0dMu      
2012 01  15.26743  07 47 25.72   +11 08 37.9   19.9R 208996    735  C~0dMu      
2012 01  31.89222  07 46 07.94   +11 12 01.8   20.9R 208996    561  C~0e3O      
2012 01  31.89419  07 46 07.93   +11 12 01.3   20.7R 208996    561  C~0e3O      
2012 01  31.89999  07 46 07.92   +11 12 01.4   20.0R 208996    561  C~0e3O      
2013 12  02.617708 07 58 56.729  +10 19 04.95        208996    244  E~11Mv      
2013 12  04.73595  07 58 50.22   +10 18 57.7   21.2R 208996    D29  C~0y2C      
2013 12  04.75186  07 58 50.21   +10 18 58.6   20.4R 208996    D29  C~0y2C      
2013 12  04.76777  07 58 50.13   +10 18 57.8   20.1R 208996    D29  C~0y2C      
2013 12  09.74757  07 58 33.61   +10 18 47.8   20.9R 208996    D29  C~0yIz      
2013 12  09.76347  07 58 33.59   +10 18 48.3   20.7R 208996    D29  C~0yIz      
2013 12  09.77938  07 58 33.57   +10 18 48.0   20.8R 208996    D29  C~0yIz      
2014 01  22.62775  07 55 22.59   +10 23 31.2   19.4R 208996    D29  C~0zy9      
2014 01  22.64366  07 55 22.38   +10 23 29.8   19.8R 208996    D29  C~0zy9      
2014 01  22.65956  07 55 22.23   +10 23 31.0   20.1R 208996    D29  C~0zy9      
2014 03  22.51020  07 51 54.74   +10 39 09.4   20.5R 208996    D29  C~12YU      
2014 03  22.54202  07 51 54.68   +10 39 10.6   19.9R 208996    D29  C~12YU      

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    -0.07       0.00     0.64
  2   5.7445      0.00     0.01       0.00     0.64
  3   5.7446      0.00    -0.53       0.00     1.11
  4   5.7447      0.00    -0.07       0.00     1.28
  5   5.7773      0.00     0.91       0.00    -0.52
  6   5.8862      0.00     0.46       0.00    -0.33
  7   5.8863      0.00    -0.51       0.00    -0.35
  8   5.8864      0.00    -0.04       0.00    -0.08
  9   6.8203      0.00    -0.07       0.00     0.19
 10   6.8205      0.00    -0.09       0.00     0.10
 11   6.8206      0.00    -0.05       0.00     0.04
 12   6.8557      0.00     0.17       0.00    -0.09
 13   6.8559      0.00    -0.04       0.00    -0.21
 14   6.8564      0.00     0.58       0.00     0.01
 15   6.9624      0.00    -0.23       0.00     0.60
 16   6.9626      0.00    -0.28       0.00     0.36
 17   7.0088      0.00     0.12       0.00    -0.19
 18   7.0088      0.00     0.07       0.00    -0.29
 19   7.0090      0.00    -0.16       0.00    -0.25
 20   7.0091      0.00    -0.39       0.00    -0.22
 21   7.0117      0.00     0.13       0.00    -0.48
 22   7.0118      0.00     0.06       0.00    -0.33
 23   7.0143      0.00    -0.04       0.00    -0.03
 24   7.0143      0.00     0.21       0.00    -0.15
 25   7.0143      0.00     0.00       0.00    -0.06
 26   7.0337      0.00    -0.07       0.00     0.01
 27   7.0362      0.00    -0.19       0.00    -0.15
 28   7.6086      0.00     0.15       0.00    -0.01
 29   7.6305      0.00     0.44       0.00    -0.45
 30   7.6332      0.00     0.53       0.00    -0.30
 31   8.7306      0.00     0.51       0.00    -0.31
 32   8.7307      0.00     0.43       0.00    -0.42
 33   8.7316      0.00     0.29       0.00     0.10
 34   8.7317      0.00     0.42       0.00     0.18
 35   8.7495      0.00     0.11       0.00     0.03
 36   8.7495      0.00    -0.10       0.00     0.22
 37   8.7495      0.00     0.13       0.00     0.21
 38   8.7497      0.00     0.09       0.00     0.08
 39   8.7497      0.00    -0.28       0.00    -0.13
 40   8.7497      0.00    -0.04       0.00     0.07
 41   8.7497      0.00     0.05       0.00     0.06
 42   8.7497      0.00    -0.02       0.00     0.05
 43   8.7499      0.00    -0.10       0.00     0.02
 44   8.7499      0.00     0.04       0.00     0.10
 45   8.7529      0.00     0.22       0.00     0.23
 46   8.7529      0.00     0.09       0.00    -0.38
 47   8.7530      0.00     0.24       0.00     0.11
 48   8.7530      0.00     0.33       0.00    -0.50
 49   8.7554      0.00     0.10       0.00     0.04
 50   8.7554      0.00     0.04       0.00    -0.07
 51   8.7554      0.00     0.28       0.00     0.13
 52   8.7555      0.00     0.22       0.00     0.12
 53   8.7555      0.00     0.01       0.00     0.11
 54   8.7556      0.00     0.02       0.00     0.05
 55   8.7556      0.00    -0.19       0.00    -0.16
 56   8.7556      0.00     0.05       0.00     0.13
 57   8.7557      0.00    -0.01       0.00     0.13
 58   9.9384      0.00    -0.42       0.00     0.14
 59   9.9386      0.00    -0.29       0.00     0.19
 60  12.7555      0.00    -0.62       0.00    -1.08
 61  12.7581      0.00    -1.48       0.00    -0.10
 62  12.9216      0.00     0.16       0.00    -0.30
 63  12.9217      0.00     0.24       0.00    -0.11
 64  12.9219      0.00     0.73       0.00     0.68
 65  14.6398      0.00     0.00       0.00     0.08
 66  14.6398      0.00     0.02       0.00     0.10
 67  14.6398      0.00     0.05       0.00     0.08
 68  14.6398      0.00     0.04       0.00     0.06
 69  14.6398      0.00     0.11       0.00     0.01
 70  14.6398      0.00     0.06       0.00     0.03
 71  14.6398      0.00     0.09       0.00     0.04
 72  14.6398      0.00     0.13       0.00     0.06
 73  14.6398      0.00     0.06       0.00     0.07
 74  14.6398      0.00     0.01       0.00     0.05
 75  14.6398      0.00     0.05       0.00     0.06
 76  14.6398      0.00     0.05       0.00     0.05
 77  14.6398      0.00     0.03       0.00     0.07
 78  14.6398      0.00     0.03       0.00     0.09
 79  14.6398      0.00     0.06       0.00     0.03
 80  14.7985      0.00    -0.41       0.00    -0.14
 81  14.7986      0.00    -0.15       0.00    -0.26
 82  14.7986      0.00    -0.33       0.00    -0.37
 83  14.7986      0.00    -1.83       0.00     0.22
 84  15.8220      0.00     0.30       0.00     0.40
 85  15.8220      0.00    -0.53       0.00    -0.34
 86  15.8221      0.00     0.32       0.00    -1.30
 87  15.8250      0.00     0.36       0.00     0.16
 88  15.8250      0.00     0.27       0.00     0.12
 89  15.8251      0.00    -0.07       0.00     0.28
 90  15.8706      0.00     0.25       0.00     0.01
 91  15.8706      0.00     0.23       0.00    -0.52
 92  15.8706      0.00     0.48       0.00    -0.50
 93  17.7069      0.00     0.04       0.00     0.03
 94  17.7127      0.00    -0.20       0.00    -0.20
 95  17.7128      0.00     0.41       0.00     0.74
 96  17.7128      0.00    -0.02       0.00    -0.01
 97  17.7264      0.00    -0.69       0.00    -0.31
 98  17.7265      0.00    -0.15       0.00     0.21
 99  17.7265      0.00     0.40       0.00    -0.08
100  17.8466      0.00     2.06       0.00     0.97
101  17.8466      0.00     0.05       0.00    -0.64
102  17.8467      0.00    -1.06       0.00     0.36
103  18.0078      0.00     0.48       0.00    -0.06
104  18.0079      0.00     0.37       0.00     0.65

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.

208996    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.579    39.579    39.579
ecceobj         0.175     0.175     0.175
incobj         13.528    13.528    13.528
qmin           31.697    31.697    31.697
qmax           47.690    47.695    47.684
amean          39.456    39.456    39.456
amin           39.074    39.074    39.074
amax           39.893    39.894    39.891
emean           0.169     0.169     0.169
emin            0.138     0.138     0.138
emax            0.197     0.197     0.197
imean          15.561    15.561    15.561
imin           14.807    14.807    14.807
imax           16.424    16.424    16.424
excite_mean     0.317     0.317     0.317
fracstop        1.000     1.000     1.000
cjmean          2.936     2.936     2.936

libcent 0       180.8     180.9     180.6
libamp  0        61.5      61.2      61.6
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       186.7     186.9     186.7
kozaiamp        180.0     180.0     180.0