Orbit Fit and Astrometric record for 248835

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: 248835    
# Created Thu Oct 19 01:36:40 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting  112 observations of  116
# Arc:   3.89y
# First observation: 2006/09/16
#  Last observation: 2010/08/07
# Chi-squared of fit:   471.89 DOF:  218 RMS:  0.36
# Min/Max residuals:    -1.57    2.11
# Exact a, adot, b, bdot, g, gdot:
  2.652578E-05  1.406304E-01  1.838287E-05  9.228393E-02  8.252669E-02 -4.107998E-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
   20.195091  -55.374647   -0.756452    0.230023   -0.625121  2453994.631154
# Heliocentric elements and errors
Epoch:              2453994.5000  =  2006/09/16
Mean Anomaly:          347.31323 +/-     0.000
Argument of Peri:       70.48425 +/-     0.000
Long of Asc Node:      280.01525 +/-     0.000
Inclination:            36.28616 +/-     0.000
Eccentricity:         0.45920862 +/-    0.0000
Semi-Major Axis:     22.12394234 +/-    0.0000
Time of Perihelion: 2455333.9937 +/-       0.0
Perihelion:          11.96443735 +/-    0.0000
Aphelion:            32.28344732 +/-    0.0000
Period (y)              104.0644 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X            7.46014175 +/-    0.0000
Ecliptic Y           -9.47983935 +/-    0.0000
Ecliptic Z            4.18334580 +/-    0.0000
Ecliptic XDOT         0.00251653 +/-    0.0000
Ecliptic YDOT         0.00456843 +/-    0.0000
Ecliptic ZDOT         0.00240281 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   12.76806393 +/-    0.0000
Geocenter to KBO     12.11743159 +/-    0.0000
# Hcoef:  9.46

The following table shows the complete astrometric record for 248835. 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 (248835) followed by the observatory code and reference code for the source of the astrometry.

2006 09  16.13040  20 08 54.89   +00 32 45.6   20.8V 248835    705  cs4201      
2006 09  16.13372  20 08 54.86   +00 32 45.5   21.5  248835    705  cs4201      
2006 09  20.11002  20 08 29.95   +00 29 31.5   20.7V 248835    705  cs4201      
2006 09  20.11334  20 08 29.94   +00 29 31.3   21.4  248835    705  cs4201      
2006 09  25.15047  20 08 04.81   +00 25 24.8   21.0V 248835    705  cs4201      
2006 09  25.15379  20 08 04.80   +00 25 24.7   21.5  248835    705  cs4201      
2006 09  27.08373  20 07 57.17   +00 23 50.9   21.0V 248835    705  cs4201      
2006 09  27.08705  20 07 57.17   +00 23 50.8   21.6  248835    705  cs4201      
2006 09  29.09640  20 07 50.38   +00 22 14.2   20.9V 248835    705  cs4201      
2006 09  29.09972  20 07 50.36   +00 22 13.9   21.6  248835    705  cs4201      
2006 10  01.09344  20 07 44.86   +00 20 39.3   20.9V 248835    705  cs4201      
2006 10  01.09676  20 07 44.84   +00 20 39.2   22.0  248835    705  cs4201      
2006 10  03.15788  20 07 40.40   +00 19 02.7   20.9V 248835    705  cs4201      
2006 10  03.16120  20 07 40.39   +00 19 02.6   21.7  248835    705  cs4201      
2006 10  11.10804  20 07 35.57   +00 13 10.3   20.9V 248835    705  cs4201      
2006 10  11.11136  20 07 35.58   +00 13 10.1   21.6  248835    705  cs4201      
2006 10  12.09370  20 07 36.34   +00 12 29.4   20.9V 248835    705  cs4201      
2006 10  12.09702  20 07 36.34   +00 12 29.3   21.6  248835    705  cs4201      
2006 10  14.14302  20 07 38.88   +00 11 06.1   21.0V 248835    705  cs4201      
2006 10  14.14634  20 07 38.88   +00 11 06.1   21.7  248835    705  cs4201      
2006 10  20.08427  20 07 53.72   +00 07 24.1   21.0V 248835    705  cs4201      
2006 10  20.08759  20 07 53.73   +00 07 24.0   21.9  248835    705  cs4201      
2006 10  22.08755  20 08 01.19   +00 06 16.7   20.9V 248835    705  cs4201      
2006 10  22.09087  20 08 01.21   +00 06 16.6   21.8  248835    705  cs4201      
2006 10  24.07691  20 08 09.86   +00 05 13.5   21.0V 248835    705  cs6534      
2006 10  24.08023  20 08 09.88   +00 05 13.3   21.8  248835    705  cs6534      
2006 10  29.06920  20 08 36.96   +00 02 54.0   21.0V 248835    705  cs6534      
2006 10  29.07252  20 08 36.98   +00 02 53.8   21.8  248835    705  cs6534      
2006 11  01.08392  20 08 56.97   +00 01 44.0   21.0V 248835    705  cs6534      
2006 11  01.08724  20 08 57.00   +00 01 44.0   21.9  248835    705  cs6534      
2006 11  12.06580  20 10 32.22   -00 00 50.9   21.2V 248835    705  ct2321      
2006 11  12.06663  20 10 32.23   -00 00 50.8   22.3  248835    705  ct2321      
2006 11  13.07792  20 10 42.69   -00 00 56.7   20.9V 248835    705  ct2321      
2006 11  13.07875  20 10 42.70   -00 00 56.7   21.6  248835    705  ct2321      
2006 11  24.06544  20 12 53.94   -00 00 17.5   21.0V 248835    705  ct2321      
2006 11  24.06793  20 12 53.96   -00 00 17.4   21.6  248835    705  ct2321      
2006 11  29.06908  20 14 03.61   +00 01 05.6   20.6V 248835    705  ct2321      
2006 11  29.06991  20 14 03.63   +00 01 05.3   20.8  248835    705  ct2321      
2007 04  27.07471  20 56 45.62   +05 25 31.0   20.5R 248835    461  Cv0164      
2007 05  16.43056  20 57 55.02   +06 21 19.7         248835    695  Cv0164      
2007 05  16.45340  20 57 55.03   +06 21 23.4         248835    695  Cv0164      
2007 05  16.48218  20 57 55.04   +06 21 28.1         248835    695  Cv0164      
2007 05  17.46029  20 57 55.57   +06 24 07.2         248835    695  Cv0164      
2007 05  17.48550  20 57 55.58   +06 24 11.4         248835    695  Cv0164      
2007 08  05.23413  20 45 28.38   +08 17 35.4   20.4R 248835    675  C~0Ayt      
2007 08  05.28060  20 45 27.67   +08 17 34.9   20.3R 248835    675  C~0Ayt      
2007 08  06.21734  20 45 13.85   +08 17 27.7   20.3R 248835    675  C~0Ayt      
2007 08  06.26134  20 45 13.18   +08 17 27.8   20.2R 248835    675  C~0Ayt      
2007 08  13.58516  20 43 25.91   +08 15 27.5   20. R 248835    413  Cv3160      
2007 08  13.59831  20 43 25.70   +08 15 27.3         248835    413  Cv3160      
2007 08  13.61549  20 43 25.44   +08 15 26.7         248835    413  Cv3160      
2007 08  13.63308  20 43 25.21   +08 15 26.3         248835    413  Cv3160      
2008 04  01.49499  21 19 56.33   +10 44 48.8   20.6V 248835    G96  Cy4747      
2008 04  01.50620  21 19 56.47   +10 44 50.7   20.5V 248835    G96  Cy4747      
2008 08  21.85394  21 12 22.13   +15 49 51.6   20. R 248835    461  Cz4539      
2008 08  21.89071  21 12 21.58   +15 49 49.6         248835    461  Cz4539      
2008 08  27.91675  21 10 55.26   +15 45 06.1   19.9R 248835    950  C~01gM      
2008 08  27.92539  21 10 55.13   +15 45 05.6   19.9R 248835    950  C~01gM      
2008 08  28.90401  21 10 41.50   +15 44 11.5   19.7R 248835    950  C~01gM      
2008 08  28.91206  21 10 41.39   +15 44 11.0   19.7R 248835    950  C~01gM      
2008 10  24.73403  21 03 45.74   +14 18 18.4   20.5R 248835    461  C~00QC      
2008 12  23.70548  21 14 14.47   +13 34 22.9   20. R 248835    461  C~02Pn      
2008 12  23.71426  21 14 14.61   +13 34 22.9         248835    461  C~02Pn      
2009 08  22.97818  21 46 40.004  +23 28 34.88  20.7V 248835    950  C~0C8E      
2009 08  22.98527  21 46 39.887  +23 28 34.61  20.7V 248835    950  C~0C8E      
2009 09  12.86788  21 41 35.76   +23 07 46.4   19.5R 248835    461  C~0976      
2009 09  12.87448  21 41 35.68   +23 07 45.8         248835    461  C~0976      
2009 09  12.88109  21 41 35.60   +23 07 45.1         248835    461  C~0976      
2009 09  14.94655  21 41 08.778  +23 04 41.02  20.6V 248835    950  C~0C8E      
2009 09  14.94859  21 41 08.73   +23 04 40.5   19.8R 248835    461  C~0976      
2009 09  14.95363  21 41 08.688  +23 04 40.27  20.9V 248835    950  C~0C8E      
2009 09  14.95739  21 41 08.61   +23 04 39.6         248835    461  C~0976      
2009 09  14.96071  21 41 08.604  +23 04 39.78  20.9V 248835    950  C~0C8E      
2009 09  14.96625  21 41 08.51   +23 04 38.8         248835    461  C~0976      
2009 09  17.09713  21 40 41.700  +23 01 19.74        248835    809  C~0Fmh      
2009 09  17.09922  21 40 41.688  +23 01 19.36        248835    809  C~0Fmh      
2009 09  17.10277  21 40 41.629  +23 01 19.27        248835    809  C~0Fmh      
2009 09  17.10750  21 40 41.598  +23 01 18.55        248835    809  C~0Fmh      
2009 09  17.11416  21 40 41.471  +23 01 17.77        248835    809  C~0Fmh      
2009 09  17.11622  21 40 41.467  +23 01 17.93        248835    809  C~0Fmh      
2009 09  17.11971  21 40 41.422  +23 01 17.35        248835    809  C~0Fmh      
2009 09  17.12405  21 40 41.353  +23 01 17.22        248835    809  C~0Fmh      
2009 09  17.12701  21 40 41.322  +23 01 16.71        248835    809  C~0Fmh      
2009 09  19.10615  21 40 17.222  +22 58 02.58        248835    809  C~0Fmh      
2009 09  19.10712  21 40 17.261  +22 58 02.13        248835    809  C~0Fmh      
2009 09  19.10843  21 40 17.238  +22 58 02.18        248835    809  C~0Fmh      
2009 09  19.10986  21 40 17.217  +22 58 02.19        248835    809  C~0Fmh      
2009 09  19.11100  21 40 17.203  +22 58 01.90        248835    809  C~0Fmh      
2009 10  01.13340  21 38 11.113  +22 35 59.15        248835    809  C~0BHD      
2009 10  01.14146  21 38 11.066  +22 35 58.39        248835    809  C~0BHD      
2009 10  01.14550  21 38 11.000  +22 35 57.31        248835    809  C~0BHD      
2009 10  01.14830  21 38 10.999  +22 35 57.31        248835    809  C~0X53      
2009 10  01.16574  21 38 10.863  +22 35 55.83        248835    809  C~0X53      
2009 12  28.75016  21 46 15.52   +20 25 38.3   20. R 248835    461  C~0CrM      
2010 06  14.26942  22 36 12.71   +28 28 39.6         248835    C51  S~0J9J      
2010 06  14.40172  22 36 12.77   +28 29 06.9         248835    C51  S~0J9J      
2010 06  14.66633  22 36 13.24   +28 30 00.3         248835    C51  S~0J9J      
2010 06  14.73242  22 36 13.14   +28 30 16.7         248835    C51  S~0J9J      
2010 06  14.73255  22 36 13.09   +28 30 15.1         248835    C51  S~0J9J      
2010 06  14.79864  22 36 13.29   +28 30 29.0         248835    C51  S~0J9J      
2010 06  14.86472  22 36 13.31   +28 30 42.8         248835    C51  S~0J9J      
2010 06  14.93094  22 36 13.33   +28 30 57.9         248835    C51  S~0J9J      
2010 06  14.99703  22 36 13.13   +28 31 11.2         248835    C51  S~0J9J      
2010 06  14.99705  22 36 13.24   +28 31 11.9   20. R 248835    461  C~0Mdw      
2010 06  15.01244  22 36 13.26   +28 31 14.7         248835    461  C~0Mdw      
2010 06  15.06324  22 36 13.21   +28 31 24.3         248835    C51  S~0J9J      
2010 06  15.26164  22 36 13.43   +28 32 07.8         248835    C51  S~0J9J      
2010 06  15.39394  22 36 13.43   +28 32 33.3         248835    C51  S~0J9J      
2010 06  15.52624  22 36 13.52   +28 33 01.1         248835    C51  S~0J9J      
2010 08  06.96471  22 29 36.91   +30 35 57.3   20.2V 248835    A74  C~0Lmc      
2010 08  07.00353  22 29 36.34   +30 35 59.5   20.2V 248835    A74  C~0Lmc      
2010 08  07.04237  22 29 35.78   +30 36 01.6   20.5V 248835    A74  C~0Lmc      
2011 12  26.09720  22 58 03.95   +33 11 41.2   19.6R 248835    688  C~0bve      
2011 12  26.12547  22 58 04.34   +33 11 38.7         248835    688  C~0bve      
2012 08  15.52382  23 59 35.75   +41 59 01.8   20.3R 248835    F65  C~0iD2      
2012 08  15.54958  23 59 35.50   +41 59 04.0   19.9R 248835    F65  C~0iD2      

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 (  -0.49)      0.00 (   3.69)
  2   0.0000      0.00     0.10       0.00    -0.02
  3   0.0109      0.00     0.10       0.00    -0.00
  4   0.0109      0.00     0.25       0.00    -0.04
  5   0.0247      0.00     0.07       0.00    -0.06
  6   0.0247      0.00     0.15       0.00    -0.00
  7   0.0300      0.00     0.12       0.00    -0.11
  8   0.0300      0.00     0.32       0.00    -0.05
  9   0.0355      0.00     0.12       0.00     0.02
 10   0.0355      0.00    -0.02       0.00    -0.12
 11   0.0410      0.00     0.16       0.00     0.01
 12   0.0410      0.00    -0.01       0.00     0.07
 13   0.0466      0.00    -0.00       0.00    -0.03
 14   0.0466      0.00    -0.05       0.00     0.03
 15   0.0684      0.00    -0.00       0.00    -0.08
 16   0.0684      0.00     0.13       0.00    -0.14
 17   0.0711      0.00     0.06       0.00     0.07
 18   0.0711      0.00     0.03       0.00     0.11
 19   0.0767      0.00     0.03       0.00    -0.09
 20   0.0767      0.00    -0.03       0.00     0.04
 21   0.0930      0.00     0.12       0.00    -0.14
 22   0.0930      0.00     0.11       0.00    -0.12
 23   0.0984      0.00    -0.05       0.00     0.08
 24   0.0985      0.00     0.06       0.00     0.09
 25   0.1039      0.00     0.01       0.00     0.03
 26   0.1039      0.00     0.09       0.00    -0.07
 27   0.1176      0.00    -0.02       0.00    -0.02
 28   0.1176      0.00    -0.02       0.00    -0.14
 29   0.1258      0.00    -0.06       0.00    -0.00
 30   0.1258      0.00     0.05       0.00     0.07
 31   0.1559      0.00     0.03       0.00    -0.12
 32   0.1559      0.00     0.06       0.00    -0.01
 33   0.1587      0.00    -0.14       0.00    -0.14
 34   0.1587      0.00    -0.12       0.00    -0.14
 35   0.1887      0.00     0.01       0.00     0.03
 36   0.1887      0.00    -0.18       0.00     0.10
 37   0.2024      0.00    -0.20       0.00     0.11
 38   0.2024      0.00    -0.08       0.00    -0.21
 39   0.6104      0.00    -0.52       0.00     0.07
 40   0.6634      0.00    -0.10       0.00     0.05
 41   0.6634      0.00    -0.11       0.00     0.02
 42   0.6635      0.00    -0.15       0.00     0.01
 43   0.6662      0.00    -0.03       0.00    -0.03
 44   0.6663      0.00     0.07       0.00     0.08
 45   0.8846      0.00     0.20       0.00     0.28
 46   0.8847      0.00     0.04       0.00     0.06
 47   0.8873      0.00     0.31       0.00    -0.20
 48   0.8874      0.00     0.18       0.00     0.26
 49   0.9075      0.00     0.02       0.00     0.02
 50   0.9075      0.00    -0.23       0.00     0.14
 51   0.9076      0.00    -0.34       0.00    -0.04
 52   0.9076      0.00     0.08       0.00    -0.01
 53   1.5424      0.00    -0.11       0.00     0.10
 54   1.5424      0.00    -0.55       0.00    -0.35
 55   1.9322      0.00     0.09       0.00     0.33
 56   1.9323      0.00     0.03       0.00    -0.21
 57   1.9488      0.00     0.06       0.00     0.24
 58   1.9488      0.00    -0.04       0.00     0.20
 59   1.9515      0.00    -0.02       0.00     0.26
 60   1.9515      0.00     0.03       0.00     0.21
 61   2.1071      0.00    -0.52       0.00     0.03
 62   2.2713      0.00    -0.52       0.00     0.23
 63   2.2713      0.00    -0.81       0.00     0.03
 64   2.9346      0.00     0.21       0.00     0.17
 65   2.9346      0.00     0.13       0.00     0.11
 66   2.9918      0.00    -0.30       0.00     0.11
 67   2.9918      0.00    -0.17       0.00     0.08
 68   2.9918      0.00    -0.04       0.00    -0.04
 69   2.9974      0.00     0.11       0.00     0.20
 70   2.9974      0.00     0.18       0.00     0.15
 71   2.9975      0.00     0.15       0.00     0.10
 72   2.9975      0.00     0.09       0.00     0.06
 73   2.9975      0.00     0.28       0.00     0.26
 74   2.9975      0.00     0.32       0.00     0.08
 75   3.0033      0.00     0.10       0.00     0.24
 76   3.0033      0.00     0.32       0.00     0.06
 77   3.0033      0.00     0.11       0.00     0.31
 78   3.0034      0.00     0.55       0.00     0.05
 79   3.0034      0.00    -0.09       0.00    -0.09
 80   3.0034      0.00     0.24       0.00     0.27
 81   3.0034      0.00     0.23       0.00     0.02
 82   3.0034      0.00     0.02       0.00     0.31
 83   3.0034      0.00     0.12       0.00     0.09
 84   3.0088      0.00    -0.55       0.00     0.34
 85   3.0088      0.00     0.21       0.00    -0.02
 86   3.0088      0.00     0.10       0.00     0.17
 87   3.0088      0.00     0.05       0.00     0.32
 88   3.0088      0.00     0.05       0.00     0.14
 89   3.0418      0.00    -0.03       0.00     0.19
 90   3.0418      0.00     0.37       0.00     0.38
 91   3.0418      0.00    -0.06       0.00    -0.22
 92   3.0418      0.00     0.31       0.00     0.12
 93   3.0418      0.00     0.67       0.00     0.72
 94   3.2844      0.00    -0.19       0.00     0.61
 95   3.7430      0.00     0.29       0.00     0.19
 96   3.7434      0.00    -0.48       0.00    -0.33
 97   3.7441      0.00 (   3.49)      0.00 (  -2.48)
 98   3.7443      0.00     1.28       0.00     0.07
 99   3.7443      0.00     0.53       0.00    -1.56
100   3.7445      0.00 (   2.83)      0.00 (  -1.50)
101   3.7447      0.00 (   2.46)      0.00 (  -1.54)
102   3.7448      0.00     2.11       0.00    -0.30
103   3.7450      0.00    -1.51       0.00    -0.82
104   3.7450      0.00    -0.34       0.00     0.22
105   3.7451      0.00    -0.15       0.00    -0.21
106   3.7452      0.00    -0.92       0.00    -1.56
107   3.7457      0.00     0.70       0.00     0.52
108   3.7461      0.00    -0.32       0.00    -1.57
109   3.7465      0.00     0.11       0.00    -1.32
110   3.8900      0.00     0.06       0.00    -0.08
111   3.8901      0.00    -0.15       0.00    -0.08
112   3.8902      0.00    -0.19       0.00    -0.15
113   5.2757      0.00    -0.17       0.00     0.03
114   5.2758      0.00    -0.36       0.00     0.13
115   5.9148      0.00    -0.52       0.00     0.25
116   5.9149      0.00     0.29       0.00     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.

248835    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        22.091    22.090    22.091
ecceobj         0.460     0.460     0.460
incobj         36.328    36.328    36.328
qmin           11.555    11.801    11.467
qmax           34.718    33.055    34.059
amean          22.443    22.277    22.337
amin           22.073    22.090    21.989
amax           23.223    22.527    22.889
emean           0.475     0.465     0.464
emin            0.459     0.459     0.411
emax            0.495     0.470     0.489
imean          37.418    37.742    37.893
imin           36.774    37.651    36.921
imax           37.894    37.894    39.901
excite_mean     0.771     0.769     0.770
fracstop        0.007     0.002     0.019
cjmean          2.551     2.558     2.557

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        85.1      75.4     113.5
kozaiamp         12.7       4.6      43.7