Orbit Fit and Astrometric record for 19521

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: 19521     
# Created Tue Oct 21 01:36:21 2014
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting  110 observations of  110
# Arc:  16.16y
# First observation: 1991/10/17
#  Last observation: 2007/12/14
# Chi-squared of fit:   697.79 DOF:  214 RMS:  0.45
# Min/Max residuals:    -1.46    2.03
# Exact a, adot, b, bdot, g, gdot:
  1.404296E-05  2.284899E-02  2.059104E-06  4.864354E-03  2.374799E-02 -1.774085E-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
   -0.563844   47.938066    0.410782   -0.008907   -0.911021  2448546.873933
# Heliocentric elements and errors
Epoch:              2448546.5000  =  1991/10/17
Mean Anomaly:          309.52794 +/-     0.000
Argument of Peri:       57.92821 +/-     0.000
Long of Asc Node:       49.97948 +/-     0.000
Inclination:            12.04229 +/-     0.000
Eccentricity:         0.10531573 +/-    0.0000
Semi-Major Axis:     45.75223371 +/-    0.0000
Time of Perihelion: 2464394.1694 +/-       0.0
Perihelion:          40.93380369 +/-    0.0000
Aphelion:            50.57066373 +/-    0.0000
Period (y)              309.4758 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           29.12152966 +/-    0.0000
Ecliptic Y           31.66055556 +/-    0.0000
Ecliptic Z           -0.41427911 +/-    0.0000
Ecliptic XDOT        -0.00209131 +/-    0.0000
Ecliptic YDOT         0.00161222 +/-    0.0000
Ecliptic ZDOT         0.00056283 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.01895850 +/-    0.0000
Geocenter to KBO     42.10890920 +/-    0.0000
# Hcoef:  4.85

The following table shows the complete astrometric record for 19521. 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 (19521) followed by the observatory code and reference code for the source of the astrometry.

1991 10  17.37326  03 02 33.63   +16 38 06.3         19521     261   b7504      
1993 11  09.28681  03 10 39.65   +17 47 04.6         19521     261   b7504      
1996 12  05.14444  03 23 48.94   +19 31 11.6   21.1V 19521     691  Cb3558      
1996 12  05.16983  03 23 48.84   +19 31 11.3   21.0V 19521     691  Cb3558      
1996 12  05.19324  03 23 48.74   +19 31 11.0   21.0V 19521     691  Cb3558      
1998 11  19.41122  03 35 39.49   +20 47 23.4   20.2R 19521     695  Ca3208      
1998 11  19.48013  03 35 39.15   +20 47 22.2         19521     695  Ca3208      
1998 11  24.28138  03 35 14.56   +20 46 12.6   20.0R 19521     688  Ca3208      
1998 11  24.28953  03 35 14.53   +20 46 12.8         19521     688  Ca3208      
1998 11  24.29734  03 35 14.53   +20 46 12.8         19521     688  Ca3208      
1998 11  24.30465  03 35 14.47   +20 46 12.7         19521     688  Ca3208      
1998 11  24.31334  03 35 14.45   +20 46 12.3         19521     688  Ca3208      
1998 11  24.32090  03 35 14.39   +20 46 12.2         19521     688  Ca3208      
1998 11  25.14568  03 35 10.23   +20 45 59.9   20.5R 19521     688  Ca3208      
1998 11  25.15321  03 35 10.18   +20 46 00.0         19521     688  Ca3208      
1998 11  25.16051  03 35 10.13   +20 45 59.6         19521     688  Ca3208      
1998 11  25.16782  03 35 10.11   +20 45 59.6         19521     688  Ca3208      
1998 11  25.17620  03 35 10.05   +20 45 59.6         19521     688  Ca3208      
1998 11  25.19426  03 35 09.97   +20 45 59.7         19521     688  Ca3208      
1998 11  25.20611  03 35 09.90   +20 45 59.1         19521     688  Ca3208      
1998 11  25.21355  03 35 09.86   +20 45 59.0         19521     688  Ca3208      
1998 11  25.22179  03 35 09.83   +20 45 58.9         19521     688  Ca3208      
1998 11  26.20644  03 35 04.81   +20 45 44.4   20.6R 19521     688  Ca3208      
1998 11  26.21575  03 35 04.77   +20 45 44.4   21.3V 19521     688  Ca3208      
1998 11  26.22708  03 35 04.70   +20 45 44.2         19521     688  Ca3208      
1998 11  26.23866  03 35 04.65   +20 45 44.1         19521     688  Ca3208      
1998 11  26.27447  03 35 04.46   +20 45 43.6         19521     688  Ca3208      
1998 11  26.28382  03 35 04.43   +20 45 43.4         19521     688  Ca3208      
1998 11  26.31758  03 35 04.26   +20 45 42.9         19521     688  Ca3208      
1998 11  26.32689  03 35 04.21   +20 45 42.8         19521     688  Ca3208      
1998 11  26.36852  03 35 04.00   +20 45 42.3         19521     688  Ca3208      
1998 11  26.37814  03 35 03.94   +20 45 41.8         19521     688  Ca3208      
1998 11  26.41302  03 35 03.80   +20 45 41.6         19521     688  Ca3208      
1998 11  26.42205  03 35 03.74   +20 45 41.3         19521     688  Ca3208      
1998 12  10.21519  03 33 56.23   +20 42 21.5         19521     684  Ca3372      
1998 12  10.24244  03 33 55.96   +20 42 21.1         19521     684  Ca3372      
1998 12  11.95349  03 33 48.13   +20 41 58.1         19521     950  Ca3372      
1998 12  12.21025  03 33 46.89   +20 41 53.7         19521     684  Ca3372      
1998 12  12.28667  03 33 46.56   +20 41 53.4         19521     684  Ca3372      
1999 01  06.15123  03 32 10.62   +20 37 01.6         19521     684  Ca3608      
1999 01  06.18248  03 32 10.55   +20 37 01.3         19521     684  Ca3608      
1999 01  09.20034  03 32 01.86   +20 36 35.0         19521     684  Ca3608      
1999 01  09.23102  03 32 01.82   +20 36 35.8         19521     684  Ca3608      
1999 01  22.27902  03 31 33.97   +20 35 10.7   20.6R 19521     568  Ca5544      
1999 01  22.34266  03 31 33.86   +20 35 10.3         19521     568  Ca5544      
1999 01  23.31906  03 31 32.43   +20 35 06.3         19521     568  Ca5544      
1999 10  07.56587  03 44 17.61   +21 30 32.0         19521     568  Ca7322      
1999 10  07.58927  03 44 17.53   +21 30 31.8         19521     568  Ca7322      
1999 10  08.60839  03 44 14.00   +21 30 24.7   21.0R 19521     568  Ca7322      
1999 10  08.63699  03 44 13.89   +21 30 24.6   20.8R 19521     568  Ca7322      
1999 10  18.11690  03 43 37.49   +21 29 11.5   20.9R 19521     621  Ca7322      
1999 10  18.15006  03 43 37.39   +21 29 10.9   20.5R 19521     621  Ca7322      
1999 10  19.10898  03 43 33.38   +21 29 02.1   20.5R 19521     621  Ca7322      
1999 10  19.14214  03 43 33.21   +21 29 01.6   20.7R 19521     621  Ca7322      
1999 10  20.06748  03 43 29.31   +21 28 53.1   20.7R 19521     621  Ca7322      
1999 10  20.10065  03 43 29.18   +21 28 52.9   20.5R 19521     621  Ca7322      
1999 10  30.19999  03 42 43.66   +21 27 08.7   20.7R 19521     688  Ca7322      
1999 10  30.29300  03 42 43.22   +21 27 06.6         19521     688  Ca7322      
1999 10  30.38443  03 42 42.77   +21 27 06.2         19521     688  Ca7322      
1999 10  31.34138  03 42 38.23   +21 26 54.6   20.5R 19521     688  Ca7322      
1999 10  31.41119  03 42 37.89   +21 26 53.9         19521     688  Ca7322      
1999 11  30.28159  03 40 06.59   +21 20 15.2   20.7R 19521     711  Ca8499      
1999 11  30.33547  03 40 06.31   +21 20 14.7   20.9R 19521     711  Ca8499      
1999 11  30.34670  03 40 06.28   +21 20 14.1   20.7R 19521     711  Ca8499      
1999 11  30.36473  03 40 06.19   +21 20 14.1   20.8R 19521     711  Ca8499      
1999 11  30.37458  03 40 06.14   +21 20 14.0   20.9R 19521     711  Ca8499      
1999 12  01.25365  03 40 01.70   +21 20 01.2   20.8R 19521     711  Ca8499      
1999 12  01.26141  03 40 01.70   +21 20 00.7   20.6R 19521     711  Ca8499      
1999 12  01.26936  03 40 01.61   +21 20 00.9   20.6R 19521     711  Ca8499      
1999 12  01.33854  03 40 01.27   +21 19 59.9   20.7R 19521     711  Ca8499      
1999 12  01.34686  03 40 01.22   +21 19 59.6   20.7R 19521     711  Ca8499      
1999 12  01.38074  03 40 01.06   +21 19 59.7   20.3R 19521     711  Ca8499      
1999 12  03.29320  03 39 51.51   +21 19 33.2   21.2V 19521     691  Ca7793      
1999 12  03.31566  03 39 51.34   +21 19 32.4   21.7V 19521     691  Ca7793      
1999 12  03.33808  03 39 51.25   +21 19 31.7   21.8V 19521     691  Ca7793      
1999 12  14.16740  03 38 59.11   +21 17 02.3   21.9V 19521     691  Ca7793      
1999 12  14.19021  03 38 59.02   +21 17 01.3   20.9V 19521     691  Ca7793      
1999 12  14.21267  03 38 58.96   +21 17 01.0   21.2V 19521     691  Ca7793      
2000 09  30.30654  03 50 02.36   +22 05 13.3   22.0V 19521     829  Cf6392      
2000 09  30.31291  03 50 02.32   +22 05 13.5   21.3R 19521     829  Cf6392      
2000 09  30.36374  03 50 02.21   +22 05 13.3         19521     829  Cf6392      
2000 09  30.37434  03 50 02.11   +22 05 13.0         19521     829  Cf6392      
2000 11  25.01641  03 45 54.86   +21 56 14.3   20.5R 19521     621  Cc4698      
2000 11  25.03829  03 45 54.73   +21 56 13.6   20.2R 19521     621  Cc4698      
2000 11  25.05579  03 45 54.64   +21 56 13.5   20.5R 19521     621  Cc4698      
2000 11  25.36396  03 45 53.03   +21 56 09.3         19521     684  Cc2190      
2000 11  25.38228  03 45 52.94   +21 56 09.5         19521     684  Cc2190      
2000 11  25.39941  03 45 52.86   +21 56 09.1         19521     684  Cc2190      
2000 11  27.30659  03 45 43.00   +21 55 42.9         19521     684  Cc2190      
2000 11  27.32768  03 45 42.90   +21 55 42.9         19521     684  Cc2190      
2000 12  04.05218  03 45 08.64   +21 54 10.0         19521     621  Cc4698      
2000 12  29.03097  03 43 16.20   +21 48 50.6   20.7R 19521     621  Cc4698      
2000 12  29.04941  03 43 16.11   +21 48 50.4   20.6R 19521     621  Cc4698      
2001 10  12.30163  03 54 52.08   +22 37 57.8   19.1  19521     304  Cf0913      
2001 10  12.32825  03 54 51.98   +22 37 57.6         19521     304  Cf0913      
2002 11  13.48952  03 57 59.42   +23 06 44.5   21.   19521     644  Cj0766      
2003 11  19.16644  04 03 07.44   +23 38 45.2   22.0V 19521     691  Ck4096      
2003 11  19.19451  04 03 07.27   +23 38 44.8   21.5V 19521     691  Ck4096      
2003 11  19.22194  04 03 07.12   +23 38 44.8   21.5V 19521     691  Ck4096      
2003 11  30.24434  04 02 08.78   +23 36 37.6   20.2R 19521     850  Cj6724      
2003 11  30.28366  04 02 08.54   +23 36 36.0   19.9R 19521     850  Cj6724      
2004 10  11.17526  04 11 40.81   +24 15 22.2         19521     621  Cl8906      
2004 10  22.12737  04 10 59.36   +24 14 41.5         19521     621  Cl8906      
2004 10  23.10211  04 10 55.18   +24 14 37.4   21. R 19521     621  Cl8906      
2004 11  08.93293  04 09 36.31   +24 12 37.7         19521     621  Cl9530      
2004 11  09.09462  04 09 35.51   +24 12 36.5   21. R 19521     621  Cl9530      
2007 12  13.33541  04 23 57.051  +25 40 11.31  22.2R 19521     675  C~0B4R      
2007 12  13.38219  04 23 56.789  +25 40 10.92  21.7R 19521     675  C~0B4R      
2007 12  14.33831  04 23 51.783  +25 40 01.53  21.7R 19521     675  C~0B4R      
2007 12  14.38509  04 23 51.503  +25 40 00.55  22.0R 19521     675  C~0B4R      

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    -0.22       0.00    -0.45
  2   2.0641      0.00    -0.58       0.00    -0.18
  3   5.1356      0.00     0.54       0.00    -0.27
  4   5.1357      0.00     0.85       0.00    -0.20
  5   5.1357      0.00     1.03       0.00    -0.15
  6   7.0911      0.00    -0.14       0.00    -0.07
  7   7.0913      0.00     0.11       0.00    -0.25
  8   7.1045      0.00    -0.57       0.00     0.05
  9   7.1045      0.00    -0.39       0.00     0.37
 10   7.1045      0.00     0.22       0.00     0.48
 11   7.1045      0.00    -0.11       0.00     0.49
 12   7.1046      0.00     0.26       0.00     0.22
 13   7.1046      0.00    -0.05       0.00     0.23
 14   7.1068      0.00     0.33       0.00     0.01
 15   7.1069      0.00     0.16       0.00     0.22
 16   7.1069      0.00    -0.03       0.00    -0.08
 17   7.1069      0.00     0.24       0.00     0.03
 18   7.1069      0.00    -0.02       0.00     0.15
 19   7.1070      0.00     0.18       0.00     0.51
 20   7.1070      0.00     0.04       0.00     0.08
 21   7.1070      0.00     0.02       0.00     0.09
 22   7.1070      0.00     0.20       0.00     0.10
 23   7.1097      0.00    -0.13       0.00     0.01
 24   7.1098      0.00    -0.02       0.00     0.14
 25   7.1098      0.00    -0.19       0.00     0.11
 26   7.1098      0.00    -0.05       0.00     0.18
 27   7.1099      0.00    -0.13       0.00     0.20
 28   7.1100      0.00     0.14       0.00     0.13
 29   7.1100      0.00     0.19       0.00     0.13
 30   7.1101      0.00     0.16       0.00     0.17
 31   7.1102      0.00     0.22       0.00     0.28
 32   7.1102      0.00     0.06       0.00    -0.07
 33   7.1103      0.00     0.64       0.00     0.24
 34   7.1103      0.00     0.43       0.00     0.08
 35   7.1481      0.00     1.14       0.00    -1.30
 36   7.1482      0.00    -0.96       0.00    -1.32
 37   7.1529      0.00     0.61       0.00    -0.62
 38   7.1536      0.00    -0.29       0.00    -1.46
 39   7.1538      0.00     0.11       0.00    -0.71
 40   7.2218      0.00    -0.20       0.00    -0.44
 41   7.2219      0.00     0.18       0.00    -0.45
 42   7.2302      0.00    -1.16       0.00    -0.34
 43   7.2303      0.00    -0.47       0.00     0.72
 44   7.2660      0.00    -0.16       0.00     0.22
 45   7.2662      0.00    -0.28       0.00     0.12
 46   7.2688      0.00    -0.18       0.00     0.35
 47   7.9731      0.00     0.18       0.00     0.41
 48   7.9732      0.00     0.22       0.00     0.36
 49   7.9760      0.00     0.38       0.00    -0.20
 50   7.9761      0.00     0.27       0.00    -0.10
 51   8.0020      0.00    -0.37       0.00     0.60
 52   8.0021      0.00     0.22       0.00     0.30
 53   8.0048      0.00    -0.02       0.00     0.16
 54   8.0048      0.00    -0.46       0.00    -0.03
 55   8.0074      0.00    -0.40       0.00     0.04
 56   8.0075      0.00    -0.21       0.00     0.15
 57   8.0351      0.00    -0.52       0.00     1.14
 58   8.0354      0.00    -0.43       0.00     0.08
 59   8.0356      0.00    -0.57       0.00     0.72
 60   8.0382      0.00    -0.36       0.00     0.13
 61   8.0384      0.00    -0.37       0.00     0.25
 62   8.1202      0.00    -0.11       0.00    -0.07
 63   8.1204      0.00    -0.16       0.00     0.20
 64   8.1204      0.00     0.26       0.00    -0.24
 65   8.1204      0.00     0.29       0.00     0.02
 66   8.1205      0.00     0.30       0.00     0.06
 67   8.1229      0.00     0.16       0.00    -0.31
 68   8.1229      0.00     0.75       0.00    -0.70
 69   8.1229      0.00     0.02       0.00    -0.39
 70   8.1231      0.00     0.22       0.00    -0.40
 71   8.1231      0.00     0.11       0.00    -0.58
 72   8.1232      0.00     0.30       0.00     0.01
 73   8.1285      0.00     0.85       0.00     0.53
 74   8.1285      0.00     0.01       0.00     0.05
 75   8.1286      0.00     0.36       0.00    -0.33
 76   8.1582      0.00     0.29       0.00     0.09
 77   8.1583      0.00     0.54       0.00    -0.60
 78   8.1584      0.00     1.21       0.00    -0.60
 79   8.9553      0.00     0.11       0.00    -0.15
 80   8.9553      0.00    -0.21       0.00     0.07
 81   8.9555      0.00     0.37       0.00     0.05
 82   8.9555      0.00    -0.67       0.00    -0.21
 83   9.1079      0.00     0.09       0.00     0.47
 84   9.1079      0.00    -0.15       0.00     0.07
 85   9.1080      0.00    -0.12       0.00     0.21
 86   9.1088      0.00    -0.32       0.00     0.15
 87   9.1089      0.00    -0.23       0.00     0.60
 88   9.1089      0.00    -0.09       0.00     0.44
 89   9.1141      0.00    -0.23       0.00     0.27
 90   9.1142      0.00    -0.07       0.00     0.56
 91   9.1326      0.00     0.10       0.00    -0.07
 92   9.2010      0.00    -0.84       0.00     0.01
 93   9.2010      0.00    -1.13       0.00     0.02
 94   9.9875      0.00    -0.06       0.00    -0.29
 95   9.9876      0.00    -0.06       0.00    -0.33
 96  11.0749      0.00     0.02       0.00     0.38
 97  12.0898      0.00     0.29       0.00    -0.25
 98  12.0899      0.00    -0.02       0.00    -0.35
 99  12.0899      0.00    -0.07       0.00    -0.06
100  12.1201      0.00     2.03       0.00     0.57
101  12.1202      0.00     1.59       0.00    -0.55
102  12.9851      0.00    -0.22       0.00     0.31
103  13.0151      0.00     0.76       0.00    -0.18
104  13.0177      0.00    -0.49       0.00     0.71
105  13.0638      0.00    -0.34       0.00    -0.45
106  13.0643      0.00     0.09       0.00    -0.24
107  16.1560      0.00    -0.18       0.00    -0.27
108  16.1561      0.00    -0.34       0.00    -0.16
109  16.1587      0.00     0.30       0.00     0.37
110  16.1588      0.00    -0.15       0.00    -0.11

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.

19521    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        46.130    46.130    46.130
ecceobj         0.108     0.108     0.108
incobj         11.999    11.999    11.999
qmin           40.258    40.245    40.271
qmax           51.622    51.626    51.611
amean          45.780    45.791    45.783
amin           45.410    45.416    45.399
amax           46.193    46.201    46.187
emean           0.105     0.106     0.105
emin            0.094     0.094     0.094
emax            0.118     0.118     0.118
imean          11.006    11.010    11.004
imin           10.586    10.587    10.587
imax           11.402    11.397    11.397
excite_mean     0.218     0.218     0.218
fracstop        1.000     1.000     1.000
cjmean          3.065     3.065     3.065

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       175.7     175.6     175.6
kozaiamp        179.9     180.0     180.0