Orbit Fit and Astrometric record for 82158

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: 82158     
# Created Tue Oct 24 01:36:25 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting  112 observations of  112
# Arc:  16.25y
# First observation: 1999/03/21
#  Last observation: 2015/06/22
# Chi-squared of fit:   463.14 DOF:  218 RMS:  0.36
# Min/Max residuals:    -1.37    1.75
# Exact a, adot, b, bdot, g, gdot:
  1.881498E-05  3.698227E-02  1.152065E-05  2.196990E-02  2.979019E-02 -4.077307E-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
   -2.441132  175.231810   -0.087825   -0.042856   -0.999525  2451258.783299
# Heliocentric elements and errors
Epoch:              2451258.5000  =  1999/03/21
Mean Anomaly:          359.43500 +/-     0.000
Argument of Peri:        6.84830 +/-     0.000
Long of Asc Node:      179.34815 +/-     0.000
Inclination:            30.86605 +/-     0.000
Eccentricity:         0.83616070 +/-    0.0000
Semi-Major Axis:    209.01696955 +/-    0.0000
Time of Perihelion: 2452990.7630 +/-       0.0
Perihelion:          34.24519306 +/-    0.0000
Aphelion:           383.78874605 +/-    0.0000
Period (y)             3021.9030 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -34.41770086 +/-    0.0000
Ecliptic Y            2.78323019 +/-    0.0000
Ecliptic Z           -1.42935301 +/-    0.0000
Ecliptic XDOT         0.00000270 +/-    0.0000
Ecliptic YDOT        -0.00340218 +/-    0.0000
Ecliptic ZDOT         0.00203327 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   34.55969284 +/-    0.0000
Geocenter to KBO     33.56820404 +/-    0.0000
# Hcoef:  6.20

The following table shows the complete astrometric record for 82158. 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 (82158) followed by the observatory code and reference code for the source of the astrometry.

1999 03  21.282556 11 38 37.37   -00 20 46.5   21.5V 82158     645  C~1Rs7      
1999 03  21.283385 11 38 37.37   -00 20 46.5   21.0V 82158     645  C~1Rs7      
1999 03  21.285873 11 38 37.36   -00 20 46.4   22.3V 82158     645  C~1Rs7      
2001 03  26.19463  11 57 50.69   +00 21 42.7   22.2R 82158     695  Cd1722      
2001 03  26.30434  11 57 50.14   +00 21 47.8         82158     695  Cd1722      
2001 04  25.17612  11 55 39.10   +00 42 45.7   21.2R 82158     688  Cd1722      
2001 04  25.25883  11 55 38.81   +00 42 48.8         82158     688  Cd1722      
2001 04  26.20087  11 55 35.43   +00 43 23.2   21.2R 82158     688  Cd1722      
2001 04  26.37502  11 55 34.75   +00 43 28.8         82158     688  Cd1722      
2001 04  29.18265  11 55 25.09   +00 45 10.4   21.0R 82158     695  Cd1722      
2001 04  29.29463  11 55 24.71   +00 45 14.1         82158     695  Cd1722      
2001 05  21.98747  11 54 29.94   +00 56 08.8   21.1R 82158     807  Cd1722      
2001 05  22.10428  11 54 29.74   +00 56 11.4         82158     807  Cd1722      
2001 06  08.95929  11 54 21.06   +01 00 57.9   21.8R 82158     304  Cd1722      
2001 06  09.02126  11 54 21.08   +01 00 58.5         82158     304  Cd1722      
2002 02  03.62953  12 11 18.99   +00 05 23.2   20.9R 82158     568  Cf2334      
2002 02  04.58780  12 11 16.38   +00 05 54.8         82158     568  Cf2334      
2002 02  04.62480  12 11 16.26   +00 05 56.3         82158     568  Cf2334      
2002 02  22.62537  12 10 13.94   +00 17 15.6   20.7R 82158     568  Ce9335      
2002 02  22.64815  12 10 13.82   +00 17 17.1   20.7R 82158     568  Ce9335      
2002 02  23.62434  12 10 09.84   +00 17 57.2   20.7R 82158     568  Ce9335      
2002 06  06.28904  12 04 02.37   +01 19 21.5         82158     568  Cf8897      
2002 06  06.29191  12 04 02.37   +01 19 21.5         82158     568  Cf8897      
2002 06  06.29688  12 04 02.37   +01 19 21.4         82158     568  Cf8897      
2002 06  06.30232  12 04 02.37   +01 19 21.5         82158     568  Cf8897      
2002 06  06.30606  12 04 02.37   +01 19 21.5         82158     568  Cf8897      
2002 06  06.30908  12 04 02.38   +01 19 21.7         82158     568  Cf8897      
2002 06  06.31202  12 04 02.37   +01 19 21.7         82158     568  Cf8897      
2002 06  06.31698  12 04 02.36   +01 19 21.7         82158     568  Cf8897      
2002 06  06.32242  12 04 02.37   +01 19 21.6         82158     568  Cf8897      
2003 03  02.51264  12 19 37.48   +00 41 47.9         82158     568  Ch5853      
2003 03  02.52904  12 19 37.41   +00 41 48.8         82158     568  Ch5853      
2003 03  03.42396  12 19 33.49   +00 42 28.6         82158     568  Ch5853      
2003 03  03.44065  12 19 33.41   +00 42 29.1         82158     568  Ch5853      
2003 03  27.88146  12 17 37.50   +01 00 59.1   21.0R 82158     230  Ch8068      
2003 03  28.03456  12 17 36.74   +01 01 06.2   21.0R 82158     230  Ch8068      
2003 03  28.04675  12 17 36.68   +01 01 06.8   20.9R 82158     230  Ch8068      
2003 04  24.98331  12 15 28.68   +01 20 38.6   21.4R 82158     230  Ch8068      
2003 04  24.99311  12 15 28.63   +01 20 39.1   21.3R 82158     230  Ch8068      
2003 04  25.00841  12 15 28.55   +01 20 39.5   21.3R 82158     230  Ch8068      
2004 03  17.02893  12 28 25.31   +01 12 18.2   21. R 82158     621  Ck3815      
2004 03  19.25620  12 28 14.59   +01 14 00.7   21.0R 82158     688  Ck2063      
2004 03  19.32280  12 28 14.26   +01 14 03.7         82158     688  Ck2063      
2004 03  26.02770  12 27 41.53   +01 19 10.8   21. R 82158     621  Ck3815      
2004 03  27.03882  12 27 36.58   +01 19 57.2   20. R 82158     621  Ck3815      
2005 04  13.20763  12 36 13.25   +01 51 07.7   21.3R 82158     675  Cn3789      
2005 04  13.24918  12 36 13.04   +01 51 09.6   21.1R 82158     675  Cn3789      
2005 04  14.20697  12 36 08.46   +01 51 49.1   21.3R 82158     675  Cn3789      
2005 04  14.26594  12 36 08.17   +01 51 51.7   21.3R 82158     675  Cn3789      
2006 01  31.493109 12 50 47.84   +01 18 26.0   21.7V 82158     645  C~1Rs7      
2006 01  31.493938 12 50 47.84   +01 18 26.0   21.3V 82158     645  C~1Rs7      
2006 01  31.496426 12 50 47.84   +01 18 26.1   22.5V 82158     645  C~1Rs7      
2006 05  01.304483 12 44 50.13   +02 20 53.8   21.7V 82158     645  C~1Rs7      
2006 05  01.305312 12 44 50.13   +02 20 53.9   21.2V 82158     645  C~1Rs7      
2006 05  01.307800 12 44 50.12   +02 20 53.9   22.2V 82158     645  C~1Rs7      
2007 12  21.68573  13 09 16.77   +01 40 35.1   22.0R 82158     250  S~06GN      
2007 12  21.69198  13 09 16.79   +01 40 35.2         82158     250  S~06GN      
2007 12  21.69823  13 09 16.82   +01 40 35.2         82158     250  S~06GN      
2007 12  21.70448  13 09 16.84   +01 40 35.2         82158     250  S~06GN      
2011 04  21.38847  13 34 25.791  +03 43 04.68  21.4i 82158     F51  C~1vlx      
2011 04  21.40016  13 34 25.736  +03 43 05.18  21.2i 82158     F51  C~1vlx      
2011 04  21.41293  13 34 25.672  +03 43 05.59  21.5r 82158     F51  C~1vlx      
2011 04  21.42375  13 34 25.625  +03 43 06.20  21.2r 82158     F51  C~1vlx      
2014 04  05.42126  14 03 48.467  +04 19 08.10  21.6w 82158     F51  C~1vlx      
2014 04  05.42264  14 03 48.455  +04 19 08.14  21.6w 82158     F51  C~1vlx      
2014 04  05.43350  14 03 48.412  +04 19 08.55  21.6w 82158     F51  C~1vlx      
2014 04  05.43487  14 03 48.408  +04 19 08.74  21.7w 82158     F51  C~1vlx      
2014 04  05.44577  14 03 48.354  +04 19 09.06  21.6w 82158     F51  C~1vlx      
2014 04  05.44716  14 03 48.349  +04 19 09.24  21.7w 82158     F51  C~1vlx      
2014 04  05.45803  14 03 48.315  +04 19 09.68  21.6w 82158     F51  C~1vlx      
2014 04  05.45941  14 03 48.294  +04 19 09.82  21.6w 82158     F51  C~1vlx      
2014 05  24.32313  14 00 02.010  +04 44 53.51  21.8w 82158     F51  C~1vlx      
2014 05  24.33540  14 00 01.959  +04 44 53.70  21.7w 82158     F51  C~1vlx      
2014 05  24.34766  14 00 01.910  +04 44 53.93  21.6w 82158     F51  C~1vlx      
2014 06  17.29670  13 58 47.091  +04 47 51.41  21.7w 82158     F51  C~1vlx      
2014 06  17.30830  13 58 47.067  +04 47 51.40  22.0w 82158     F51  C~1vlx      
2014 06  17.31982  13 58 47.031  +04 47 51.38  21.6w 82158     F51  C~1vlx      
2014 06  17.33138  13 58 47.011  +04 47 51.39  21.7w 82158     F51  C~1vlx      
2014 07  01.27785  13 58 25.341  +04 46 20.45  21.7w 82158     F51  C~1vlx      
2014 07  01.28932  13 58 25.333  +04 46 20.30  21.8w 82158     F51  C~1vlx      
2014 07  01.30077  13 58 25.320  +04 46 20.11  21.7w 82158     F51  C~1vlx      
2014 07  01.31222  13 58 25.308  +04 46 20.01  21.7w 82158     F51  C~1vlx      
2015 02  15.57185  14 15 14.443  +03 56 17.76  21.5i 82158     F51  C~1vlx      
2015 02  15.58526  14 15 14.441  +03 56 18.04  21.3i 82158     F51  C~1vlx      
2015 02  15.61207  14 15 14.423  +03 56 19.53  21.2i 82158     F51  C~1vlx      
2015 03  22.49579  14 13 53.292  +04 22 42.92  21.7w 82158     F51  C~1vlx      
2015 03  22.50947  14 13 53.252  +04 22 43.45  21.8w 82158     F51  C~1vlx      
2015 03  22.52317  14 13 53.196  +04 22 44.17  21.7w 82158     F51  C~1vlx      
2015 03  22.53698  14 13 53.141  +04 22 44.82  21.7w 82158     F51  C~1vlx      
2015 03  24.62523  14 13 45.191  +04 24 21.36  21.7w 82158     F51  C~1vlx      
2015 03  24.63120  14 13 45.174  +04 24 21.64  21.7w 82158     F51  C~1vlx      
2015 03  24.63712  14 13 45.156  +04 24 21.95  21.8w 82158     F51  C~1vlx      
2015 04  13.42640  14 12 19.137  +04 38 48.01  21.6w 82158     F51  C~1vlx      
2015 04  13.44073  14 12 19.080  +04 38 48.47  21.7w 82158     F51  C~1vlx      
2015 04  13.45511  14 12 19.003  +04 38 49.31  21.8w 82158     F51  C~1vlx      
2015 04  13.46981  14 12 18.934  +04 38 50.07  21.7w 82158     F51  C~1vlx      
2015 04  23.49424  14 11 30.810  +04 45 14.62  21.5w 82158     F51  C~1vlx      
2015 04  23.50846  14 11 30.738  +04 45 15.12  21.7w 82158     F51  C~1vlx      
2015 04  23.52266  14 11 30.672  +04 45 15.74  21.7w 82158     F51  C~1vlx      
2015 04  23.53690  14 11 30.597  +04 45 16.17  21.6w 82158     F51  C~1vlx      
2015 04  24.52693  14 11 25.805  +04 45 51.46  21.6w 82158     F51  C~1vlx      
2015 04  24.54113  14 11 25.731  +04 45 52.05  21.9w 82158     F51  C~1vlx      
2015 04  24.55530  14 11 25.656  +04 45 52.52  21.6w 82158     F51  C~1vlx      
2015 04  24.56952  14 11 25.591  +04 45 53.02  21.7w 82158     F51  C~1vlx      
2015 05  15.42589  14 09 46.855  +04 56 04.18  21.8w 82158     F51  C~1vlx      
2015 05  15.43795  14 09 46.802  +04 56 04.41  21.7w 82158     F51  C~1vlx      
2015 05  15.45004  14 09 46.732  +04 56 04.45  21.9w 82158     F51  C~1vlx      
2015 05  15.46224  14 09 46.697  +04 56 04.87  21.8w 82158     F51  C~1vlx      
2015 06  22.31769  14 07 38.228  +05 01 38.51  21.8i 82158     F51  C~1vlx      
2015 06  22.33092  14 07 38.210  +05 01 38.38  21.4i 82158     F51  C~1vlx      
2015 06  22.34418  14 07 38.177  +05 01 38.23  21.6i 82158     F51  C~1vlx      
2015 06  22.35745  14 07 38.144  +05 01 38.27  21.1i 82158     F51  C~1vlx      

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    -0.22
  2   0.0000      0.00     0.28       0.00    -0.11
  3   0.0000      0.00     0.32       0.00    -0.12
  4   2.0148      0.00     0.37       0.00     0.40
  5   2.0151      0.00     0.28       0.00     0.52
  6   2.0969      0.00     0.41       0.00     0.68
  7   2.0971      0.00     0.67       0.00     0.72
  8   2.0997      0.00     0.74       0.00     0.45
  9   2.1002      0.00     0.04       0.00    -0.31
 10   2.1079      0.00     0.40       0.00     0.68
 11   2.1082      0.00     0.47       0.00     0.45
 12   2.1703      0.00     0.28       0.00    -0.05
 13   2.1706      0.00    -0.13       0.00    -0.02
 14   2.2195      0.00    -0.01       0.00     0.54
 15   2.2197      0.00    -0.02       0.00     0.52
 16   2.8757      0.00    -0.64       0.00    -1.24
 17   2.8783      0.00    -0.76       0.00    -1.37
 18   2.8784      0.00    -0.98       0.00    -1.10
 19   2.9277      0.00    -0.38       0.00    -1.17
 20   2.9278      0.00    -0.77       0.00    -0.61
 21   2.9304      0.00    -0.43       0.00    -1.14
 22   3.2115      0.00    -0.31       0.00    -0.06
 23   3.2115      0.00    -0.30       0.00    -0.10
 24   3.2115      0.00    -0.29       0.00    -0.25
 25   3.2116      0.00    -0.27       0.00    -0.22
 26   3.2116      0.00    -0.25       0.00    -0.26
 27   3.2116      0.00    -0.09       0.00    -0.09
 28   3.2116      0.00    -0.23       0.00    -0.13
 29   3.2116      0.00    -0.36       0.00    -0.18
 30   3.2116      0.00    -0.19       0.00    -0.35
 31   3.9486      0.00     0.02       0.00     0.30
 32   3.9487      0.00     0.06       0.00     0.48
 33   3.9511      0.00    -0.35       0.00     0.84
 34   3.9512      0.00    -0.43       0.00     0.61
 35   4.0181      0.00     0.40       0.00    -0.38
 36   4.0185      0.00     0.43       0.00    -0.23
 37   4.0185      0.00     0.43       0.00    -0.18
 38   4.0950      0.00     0.32       0.00    -0.08
 39   4.0950      0.00     0.17       0.00     0.06
 40   4.0951      0.00    -0.10       0.00    -0.10
 41   4.9904      0.00     0.20       0.00     0.27
 42   4.9965      0.00    -0.02       0.00     0.16
 43   4.9967      0.00    -0.05       0.00     0.09
 44   5.0150      0.00    -0.38       0.00    -0.27
 45   5.0178      0.00    -0.20       0.00     0.11
 46   6.0641      0.00     1.75       0.00    -0.25
 47   6.0642      0.00     1.59       0.00    -0.07
 48   6.0669      0.00     0.51       0.00     0.06
 49   6.0670      0.00     0.39       0.00     0.24
 50   6.8671      0.00    -0.27       0.00     0.24
 51   6.8671      0.00    -0.26       0.00     0.21
 52   6.8671      0.00    -0.20       0.00     0.23
 53   7.1130      0.00    -0.27       0.00     0.27
 54   7.1130      0.00    -0.22       0.00     0.35
 55   7.1130      0.00    -0.21       0.00     0.26
 56   8.7540      0.00     0.39       0.00    -0.14
 57   8.7540      0.00     0.35       0.00    -0.07
 58   8.7540      0.00     0.46       0.00    -0.11
 59   8.7541      0.00     0.41       0.00    -0.14
 60  12.0852      0.00    -0.25       0.00    -0.09
 61  12.0852      0.00    -0.21       0.00    -0.03
 62  12.0852      0.00    -0.22       0.00    -0.10
 63  12.0853      0.00    -0.12       0.00     0.11
 64  15.0421      0.00    -0.15       0.00     0.02
 65  15.0421      0.00    -0.24       0.00    -0.00
 66  15.0422      0.00    -0.12       0.00    -0.07
 67  15.0422      0.00    -0.09       0.00     0.06
 68  15.0422      0.00    -0.14       0.00    -0.09
 69  15.0422      0.00    -0.11       0.00     0.03
 70  15.0422      0.00     0.14       0.00    -0.00
 71  15.0422      0.00    -0.08       0.00     0.08
 72  15.1760      0.00    -0.21       0.00    -0.03
 73  15.1761      0.00    -0.23       0.00    -0.04
 74  15.1761      0.00    -0.22       0.00    -0.01
 75  15.2417      0.00     0.08       0.00    -0.05
 76  15.2417      0.00     0.12       0.00    -0.04
 77  15.2417      0.00    -0.03       0.00    -0.05
 78  15.2417      0.00     0.07       0.00    -0.02
 79  15.2799      0.00    -0.02       0.00    -0.03
 80  15.2800      0.00     0.03       0.00    -0.05
 81  15.2800      0.00     0.00       0.00    -0.10
 82  15.2800      0.00    -0.01       0.00    -0.07
 83  15.9077      0.00     0.06       0.00     0.13
 84  15.9077      0.00     0.18       0.00    -0.15
 85  15.9078      0.00     0.22       0.00     0.22
 86  16.0033      0.00    -0.07       0.00    -0.03
 87  16.0034      0.00     0.12       0.00    -0.13
 88  16.0034      0.00     0.07       0.00    -0.04
 89  16.0034      0.00     0.04       0.00    -0.03
 90  16.0092      0.00     0.04       0.00    -0.01
 91  16.0092      0.00     0.14       0.00    -0.00
 92  16.0092      0.00     0.22       0.00     0.03
 93  16.0634      0.00     0.10       0.00    -0.09
 94  16.0634      0.00     0.28       0.00    -0.21
 95  16.0634      0.00     0.16       0.00     0.04
 96  16.0635      0.00     0.19       0.00     0.21
 97  16.0909      0.00     0.07       0.00    -0.11
 98  16.0910      0.00     0.04       0.00    -0.12
 99  16.0910      0.00     0.10       0.00    -0.01
100  16.0910      0.00     0.03       0.00    -0.10
101  16.0938      0.00     0.23       0.00    -0.15
102  16.0938      0.00     0.17       0.00    -0.06
103  16.0938      0.00     0.10       0.00    -0.09
104  16.0939      0.00     0.17       0.00    -0.09
105  16.1510      0.00     0.14       0.00     0.12
106  16.1510      0.00     0.17       0.00     0.08
107  16.1510      0.00    -0.05       0.00    -0.16
108  16.1511      0.00     0.26       0.00    -0.01
109  16.2547      0.00    -0.09       0.00     0.05
110  16.2548      0.00     0.05       0.00    -0.01
111  16.2548      0.00    -0.04       0.00    -0.09
112  16.2548      0.00    -0.12       0.00     0.02

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.

82158    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj       210.496   210.494   210.497
ecceobj         0.837     0.837     0.837
incobj         30.856    30.856    30.856
qmin           31.263    31.263    31.677
qmax          417.606   436.503   427.724
amean         205.902   210.269   211.303
amin          194.184   194.108   197.921
amax          225.952   235.196   230.579
emean           0.836     0.840     0.840
emin            0.823     0.825     0.825
emax            0.849     0.856     0.855
imean          29.682    29.616    29.672
imin           28.061    28.063    28.564
imax           31.065    31.025    31.074
excite_mean     0.972     0.974     0.975
fracstop        1.000     1.000     1.000
cjmean          2.639     2.639     2.640

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        29.1      30.0      30.5
kozaiamp         24.0      24.2      21.0