Orbit Fit and Astrometric record for 33128

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: 33128     
# Created Mon Oct 23 01:36:19 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting  103 observations of  103
# Arc:  17.23y
# First observation: 1998/01/22
#  Last observation: 2015/04/16
# Chi-squared of fit:   504.95 DOF:  200 RMS:  0.39
# Min/Max residuals:    -1.55    2.08
# Exact a, adot, b, bdot, g, gdot:
  1.891930E-05  4.890652E-02  9.044155E-06  1.245159E-02  3.961050E-02  1.787031E-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
    0.002936  133.187382    0.185473   -0.000162   -0.973838  2450835.827171
# Heliocentric elements and errors
Epoch:              2450836.5000  =  1998/01/23
Mean Anomaly:           38.53019 +/-     0.000
Argument of Peri:      281.81396 +/-     0.000
Long of Asc Node:      132.76207 +/-     0.000
Inclination:            14.27790 +/-     0.000
Eccentricity:         0.38363719 +/-    0.0000
Semi-Major Axis:     33.14746991 +/-    0.0000
Time of Perihelion: 2443375.9189 +/-       0.0
Perihelion:          20.43086776 +/-    0.0000
Aphelion:            45.86407205 +/-    0.0000
Period (y)              190.8463 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -17.80148950 +/-    0.0000
Ecliptic Y           19.24052885 +/-    0.0000
Ecliptic Z            0.00153346 +/-    0.0000
Ecliptic XDOT        -0.00330715 +/-    0.0000
Ecliptic YDOT        -0.00140463 +/-    0.0000
Ecliptic ZDOT         0.00086060 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   26.21224410 +/-    0.0000
Geocenter to KBO     25.24569140 +/-    0.0000
# Hcoef:  6.86

The following table shows the complete astrometric record for 33128. 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 (33128) followed by the observatory code and reference code for the source of the astrometry.

1998 01  22.32644  09 02 37.01   +16 51 44.6   21.8V 33128     691  Ca5527      
1998 01  22.34868  09 02 36.88   +16 51 45.6   21.7V 33128     691  Ca5527      
1998 01  22.37058  09 02 36.70   +16 51 46.4   21.8V 33128     691  Ca5527      
1998 01  29.36643  09 01 44.45   +16 56 20.0   21.7V 33128     691  Ca5527      
1998 01  29.38871  09 01 44.24   +16 56 21.1   21.7V 33128     691  Ca5527      
1998 01  29.41514  09 01 44.06   +16 56 21.5   21.3V 33128     691  Ca5527      
1998 02  03.34628  09 01 06.85   +16 59 35.5   21.7V 33128     691  Ca5527      
1998 02  03.36828  09 01 06.67   +16 59 36.4   21.8V 33128     691  Ca5527      
1998 02  03.39061  09 01 06.53   +16 59 37.3   21.8V 33128     691  Ca5527      
2000 02  04.32101  09 24 23.66   +16 42 21.3   21.1V 33128     691  Cb6387      
2000 02  04.34273  09 24 23.39   +16 42 21.1   21.6V 33128     691  Cb6387      
2000 02  04.36464  09 24 23.26   +16 42 22.2   20.5V 33128     691  Cb6387      
2000 02  05.33597  09 24 16.32   +16 43 02.0   20.3R 33128     695  Cb0744      
2000 02  05.44067  09 24 15.54   +16 43 06.4         33128     695  Cb0744      
2000 03  01.13382  09 21 21.76   +16 59 07.6   20.8R 33128     695  Cb0744      
2000 03  01.21650  09 21 21.20   +16 59 11.0         33128     695  Cb0744      
2000 03  01.33848  09 21 20.37   +16 59 15.5         33128     695  Cb0744      
2000 03  03.23859  09 21 08.15   +17 00 21.9   21.0R 33128     688  Cb0744      
2000 03  03.31946  09 21 07.63   +17 00 24.5         33128     688  Cb0744      
2000 03  10.20597  09 20 25.43   +17 04 14.2   20.0R 33128     688  Cb1831      
2000 03  10.30117  09 20 24.89   +17 04 17.4         33128     688  Cb1831      
2000 03  12.13993  09 20 14.34   +17 05 14.4   21.2R 33128     709  Cb0744      
2000 03  12.16177  09 20 14.21   +17 05 15.2   21.2R 33128     709  Cb0744      
2000 03  12.18361  09 20 14.05   +17 05 16.4   21.1R 33128     709  Cb0744      
2000 03  12.20545  09 20 13.92   +17 05 16.6   21.3R 33128     709  Cb0744      
2000 03  12.22728  09 20 13.83   +17 05 17.1   21.5R 33128     709  Cb0744      
2000 03  12.24912  09 20 13.66   +17 05 17.9   21.0R 33128     709  Cb0744      
2001 02  14.99079  09 34 06.42   +16 38 20.0   22.2R 33128     950  Cc6344      
2001 02  15.00591  09 34 06.30   +16 38 20.5   22.8R 33128     950  Cc6344      
2001 02  15.02879  09 34 06.14   +16 38 21.4         33128     950  Cc6344      
2001 02  21.19402  09 33 22.92   +16 42 27.9   21.1V 33128     691  Cc7363      
2001 02  21.22350  09 33 22.72   +16 42 28.1   21.5V 33128     691  Cc7363      
2001 02  21.25463  09 33 22.49   +16 42 29.8   21.1V 33128     691  Cc7363      
2001 03  13.19544  09 31 14.49   +16 54 19.7   20.8  33128     304  Cf1086      
2001 03  13.21653  09 31 14.38   +16 54 20.5         33128     304  Cf1086      
2001 03  14.10491  09 31 09.32   +16 54 48.3         33128     304  Cf1086      
2001 03  14.12755  09 31 09.19   +16 54 49.1         33128     304  Cf1087      
2002 01  10.00425  09 48 43.22   +16 00 08.0   20.9R 33128     621  Ce6422      
2002 01  10.04267  09 48 43.01   +16 00 09.1         33128     621  Ce6422      
2002 01  13.97244  09 48 21.31   +16 02 37.7   20.6R 33128     621  Ce6422      
2002 01  14.01052  09 48 21.12   +16 02 39.2   20.7R 33128     621  Ce6422      
2002 02  19.19753  09 44 21.48   +16 27 34.5   21.6V 33128     291  Cf3851      
2002 02  19.21818  09 44 21.18   +16 27 35.7   21.8V 33128     291  Cf3851      
2002 02  19.24413  09 44 20.96   +16 27 36.9   22.4V 33128     291  Cf3851      
2002 03  10.88410  09 42 12.08   +16 39 50.0         33128     204  Cf3851      
2002 03  11.01789  09 42 11.31   +16 39 54.1   21.1R 33128     204  Cf3851      
2002 03  20.12298  09 41 19.77   +16 44 38.4   21.5V 33128     691  Cf3851      
2002 03  20.14574  09 41 19.56   +16 44 39.5   21.0V 33128     691  Cf3851      
2002 03  20.16861  09 41 19.47   +16 44 40.1   20.9V 33128     691  Cf3851      
2004 05  28.98098  09 59 44.98   +16 22 09.4   22.0R 33128     304  Ck8856      
2004 05  29.01462  09 59 45.05   +16 22 08.3         33128     304  Ck8856      
2005 05  10.177975 10 08 40.76   +16 09 31.6         33128     645  C~1ccr      
2005 05  10.178808 10 08 40.76   +16 09 31.6         33128     645  C~1ccr      
2005 05  10.181296 10 08 40.75   +16 09 31.6         33128     645  C~1ccr      
2008 11  05.83499  10 52 16.44   +13 40 19.2         33128     250  S~06ET      
2008 11  05.84194  10 52 16.45   +13 40 19.0         33128     250  S~06ET      
2008 11  05.84888  10 52 16.50   +13 40 19.1         33128     250  S~06ET      
2008 11  05.88985  10 52 16.69   +13 40 18.6         33128     250  S~06ET      
2012 01  21.45480  11 15 38.823  +12 58 58.80  22.4w 33128     F51  C~1vgj      
2012 01  21.46889  11 15 38.754  +12 58 59.59  22.3w 33128     F51  C~1vgj      
2012 01  21.49711  11 15 38.668  +12 59 00.55  22.2w 33128     F51  C~1vgj      
2012 02  16.52399  11 13 37.737  +13 17 02.61  21.5w 33128     F51  C~1vgj      
2012 02  16.52547  11 13 37.723  +13 17 02.58  21.6w 33128     F51  C~1vgj      
2012 02  16.53866  11 13 37.663  +13 17 03.12  21.7w 33128     F51  C~1vgj      
2012 02  16.54011  11 13 37.642  +13 17 03.22  21.7w 33128     F51  C~1vgj      
2012 02  16.55338  11 13 37.571  +13 17 03.83  22.0w 33128     F51  C~1vgj      
2012 02  16.55484  11 13 37.563  +13 17 03.80  21.8w 33128     F51  C~1vgj      
2012 02  16.56954  11 13 37.477  +13 17 04.40  21.9w 33128     F51  C~1vgj      
2013 02  14.39999  11 21 09.240  +12 54 27.90  21.7w 33128     F51  C~1vgj      
2013 02  14.40459  11 21 09.222  +12 54 28.04  21.6w 33128     F51  C~1vgj      
2013 02  14.41455  11 21 09.168  +12 54 28.48  21.6w 33128     F51  C~1vgj      
2013 02  14.41915  11 21 09.145  +12 54 28.67  21.6w 33128     F51  C~1vgj      
2013 02  14.42917  11 21 09.085  +12 54 29.10  21.7w 33128     F51  C~1vgj      
2013 02  14.43379  11 21 09.059  +12 54 29.35  21.7w 33128     F51  C~1vgj      
2013 02  14.44392  11 21 09.015  +12 54 29.79  21.7w 33128     F51  C~1vgj      
2013 02  14.44854  11 21 08.981  +12 54 29.99  21.7w 33128     F51  C~1vgj      
2014 11  22.63141  11 36 38.992  +11 36 41.77  22.1w 33128     F51  C~1vgj      
2014 11  22.63535  11 36 39.022  +11 36 41.73  22.0w 33128     F51  C~1vgj      
2014 11  22.63930  11 36 39.030  +11 36 41.65  22.1w 33128     F51  C~1vgj      
2014 11  22.64324  11 36 39.050  +11 36 41.70  22.1w 33128     F51  C~1vgj      
2014 11  26.59493  11 36 52.737  +11 36 31.21  21.8w 33128     F51  C~1vgj      
2014 11  26.60748  11 36 52.779  +11 36 31.18  22.0w 33128     F51  C~1vgj      
2014 11  26.61998  11 36 52.814  +11 36 31.37  22.1w 33128     F51  C~1vgj      
2014 11  26.63253  11 36 52.865  +11 36 31.29  22.1w 33128     F51  C~1vgj      
2015 01  29.61213  11 36 31.356  +11 59 29.88  22.7w 33128     F51  C~1vgj      
2015 01  29.62428  11 36 31.308  +11 59 30.57  22.0w 33128     F51  C~1vgj      
2015 01  29.63642  11 36 31.274  +11 59 30.93  22.4w 33128     F51  C~1vgj      
2015 01  29.64856  11 36 31.221  +11 59 31.49  22.1w 33128     F51  C~1vgj      
2015 02  16.40726  11 35 13.120  +12 11 45.44  22.1w 33128     F51  C~1vgj      
2015 02  16.41869  11 35 13.067  +12 11 45.78  22.1w 33128     F51  C~1vgj      
2015 02  16.43013  11 35 13.018  +12 11 46.33  22.0w 33128     F51  C~1vgj      
2015 02  16.44158  11 35 12.938  +12 11 46.88  21.8w 33128     F51  C~1vgj      
2015 03  24.48258  11 31 54.437  +12 35 57.75  22.4w 33128     F51  C~1vgj      
2015 03  24.49407  11 31 54.356  +12 35 57.97  22.5w 33128     F51  C~1vgj      
2015 03  24.50554  11 31 54.303  +12 35 58.59  22.2w 33128     F51  C~1vgj      
2015 03  25.49669  11 31 48.802  +12 36 32.81  22.0w 33128     F51  C~1vgj      
2015 03  25.50815  11 31 48.742  +12 36 33.16  22.0w 33128     F51  C~1vgj      
2015 03  25.51960  11 31 48.675  +12 36 33.63  22.0w 33128     F51  C~1vgj      
2015 03  25.53108  11 31 48.601  +12 36 34.00  22.4w 33128     F51  C~1vgj      
2015 04  16.40624  11 29 57.377  +12 46 53.40  21.8w 33128     F51  C~1vgj      
2015 04  16.41784  11 29 57.321  +12 46 53.57  21.9w 33128     F51  C~1vgj      
2015 04  16.42949  11 29 57.272  +12 46 53.82  21.8w 33128     F51  C~1vgj      
2015 04  16.44113  11 29 57.216  +12 46 54.14  22.0w 33128     F51  C~1vgj      

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    -0.19       0.00     0.89
  2   0.0001      0.00     0.51       0.00    -0.73
  3   0.0001      0.00     0.27       0.00    -0.78
  4   0.0193      0.00     0.05       0.00    -0.47
  5   0.0193      0.00    -0.54       0.00    -0.24
  6   0.0194      0.00    -0.20       0.00    -0.88
  7   0.0329      0.00    -0.09       0.00    -0.60
  8   0.0330      0.00    -0.26       0.00    -0.56
  9   0.0330      0.00     0.21       0.00    -0.53
 10   2.0342      0.00     0.10       0.00     0.83
 11   2.0343      0.00    -1.55       0.00    -0.26
 12   2.0343      0.00    -1.08       0.00    -0.06
 13   2.0370      0.00     0.34       0.00    -0.04
 14   2.0373      0.00     0.21       0.00     0.09
 15   2.1049      0.00     0.33       0.00    -0.16
 16   2.1051      0.00     0.16       0.00     0.27
 17   2.1054      0.00    -0.13       0.00     0.45
 18   2.1106      0.00     0.46       0.00     0.05
 19   2.1109      0.00     0.56       0.00    -0.15
 20   2.1297      0.00     0.01       0.00     0.30
 21   2.1300      0.00     0.41       0.00     0.49
 22   2.1350      0.00     0.48       0.00     0.01
 23   2.1351      0.00     0.42       0.00     0.14
 24   2.1351      0.00    -0.08       0.00     0.66
 25   2.1352      0.00    -0.14       0.00     0.19
 26   2.1353      0.00     0.40       0.00     0.02
 27   2.1353      0.00    -0.25       0.00     0.15
 28   3.0655      0.00     0.15       0.00     0.02
 29   3.0655      0.00    -0.02       0.00    -0.09
 30   3.0656      0.00     0.06       0.00    -0.12
 31   3.0825      0.00     0.59       0.00     0.57
 32   3.0825      0.00     0.71       0.00    -0.39
 33   3.0826      0.00     0.55       0.00     0.09
 34   3.1372      0.00     0.18       0.00    -0.36
 35   3.1373      0.00     0.38       0.00    -0.22
 36   3.1397      0.00     0.12       0.00    -0.06
 37   3.1398      0.00     0.13       0.00     0.05
 38   3.9663      0.00    -0.08       0.00     1.21
 39   3.9664      0.00    -0.09       0.00     0.86
 40   3.9771      0.00     0.89       0.00    -0.49
 41   3.9772      0.00     1.35       0.00    -0.47
 42   4.0763      0.00     2.08       0.00     0.20
 43   4.0764      0.00    -0.25       0.00     0.55
 44   4.0764      0.00    -0.81       0.00     0.70
 45   4.1302      0.00    -0.64       0.00    -0.09
 46   4.1306      0.00     0.10       0.00    -0.45
 47   4.1555      0.00     0.53       0.00     0.29
 48   4.1556      0.00    -0.79       0.00     0.73
 49   4.1556      0.00    -0.29       0.00     0.67
 50   6.3481      0.00    -0.14       0.00    -0.11
 51   6.3482      0.00    -0.48       0.00    -0.60
 52   7.2960      0.00    -0.22       0.00     0.01
 53   7.2960      0.00    -0.22       0.00     0.02
 54   7.2960      0.00    -0.37       0.00     0.03
 55  10.7885      0.00    -0.05       0.00     0.17
 56  10.7885      0.00    -0.38       0.00     0.05
 57  10.7886      0.00    -0.11       0.00     0.23
 58  10.7887      0.00    -0.07       0.00     0.20
 59  13.9962      0.00    -0.13       0.00    -0.18
 60  13.9963      0.00    -0.38       0.00     0.07
 61  13.9964      0.00    -0.10       0.00    -0.05
 62  14.0676      0.00     0.15       0.00     0.04
 63  14.0676      0.00     0.06       0.00    -0.05
 64  14.0677      0.00     0.27       0.00    -0.08
 65  14.0677      0.00     0.07       0.00    -0.05
 66  14.0677      0.00     0.12       0.00    -0.01
 67  14.0677      0.00     0.12       0.00    -0.10
 68  14.0677      0.00     0.06       0.00    -0.14
 69  15.0639      0.00    -0.14       0.00    -0.18
 70  15.0639      0.00    -0.04       0.00    -0.24
 71  15.0639      0.00    -0.06       0.00    -0.23
 72  15.0639      0.00    -0.03       0.00    -0.24
 73  15.0639      0.00    -0.13       0.00    -0.24
 74  15.0639      0.00    -0.15       0.00    -0.19
 75  15.0640      0.00     0.00       0.00    -0.19
 76  15.0640      0.00    -0.14       0.00    -0.19
 77  16.8331      0.00    -0.40       0.00     0.05
 78  16.8332      0.00    -0.16       0.00     0.02
 79  16.8332      0.00    -0.25       0.00    -0.04
 80  16.8332      0.00    -0.16       0.00     0.03
 81  16.8440      0.00    -0.17       0.00    -0.00
 82  16.8440      0.00    -0.14       0.00    -0.02
 83  16.8441      0.00    -0.21       0.00     0.18
 84  16.8441      0.00    -0.04       0.00     0.11
 85  17.0193      0.00    -0.03       0.00    -0.22
 86  17.0193      0.00    -0.06       0.00    -0.01
 87  17.0193      0.00     0.13       0.00    -0.12
 88  17.0194      0.00     0.03       0.00    -0.04
 89  17.0680      0.00    -0.01       0.00     0.05
 90  17.0680      0.00     0.07       0.00    -0.10
 91  17.0680      0.00     0.21       0.00    -0.04
 92  17.0681      0.00    -0.12       0.00     0.02
 93  17.1668      0.00     0.41       0.00    -0.11
 94  17.1668      0.00     0.17       0.00    -0.29
 95  17.1668      0.00     0.35       0.00    -0.06
 96  17.1695      0.00     0.25       0.00    -0.10
 97  17.1696      0.00     0.31       0.00    -0.14
 98  17.1696      0.00     0.27       0.00    -0.06
 99  17.1696      0.00     0.13       0.00    -0.08
100  17.2295      0.00     0.30       0.00     0.07
101  17.2295      0.00     0.26       0.00    -0.01
102  17.2296      0.00     0.33       0.00    -0.01
103  17.2296      0.00     0.29       0.00     0.06

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.

33128    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        33.353    33.353    33.353
ecceobj         0.386     0.386     0.386
incobj         14.254    14.254    14.254
qmin           19.664    20.409    19.914
qmax           48.492    46.764    50.202
amean          33.118    33.408    34.492
amin           30.978    33.206    33.205
amax           34.420    33.656    35.916
emean           0.390     0.385     0.403
emin            0.351     0.380     0.380
emax            0.415     0.389     0.422
imean          10.706    12.658     8.938
imin            9.574    12.480     6.931
imax           12.842    12.842    12.842
excite_mean     0.432     0.443     0.433
fracstop        0.037     0.001     0.040
cjmean          2.805     2.801     2.806

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       180.1     283.8     206.1
kozaiamp        179.6       1.4     179.6