Orbit Fit and Astrometric record for 42301

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: 42301     
# Created Fri Dec 15 02:36:22 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting  116 observations of  116
# Arc:  34.26y
# First observation: 1982/07/27
#  Last observation: 2016/10/31
# Chi-squared of fit:   168.09 DOF:  226 RMS:  0.21
# Min/Max residuals:    -0.84    0.66
# Exact a, adot, b, bdot, g, gdot:
  1.620948E-05  2.275967E-02  8.432460E-07  1.613552E-04  2.314504E-02  6.166758E-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
    0.634432   -0.744865    0.820817    0.006902   -0.594930  2445178.282096
# Heliocentric elements and errors
Epoch:              2445178.5000  =  1982/07/28
Mean Anomaly:           44.75699 +/-     0.000
Argument of Peri:      342.40669 +/-     0.000
Long of Asc Node:      301.79741 +/-     0.000
Inclination:             0.75150 +/-     0.000
Eccentricity:         0.28450087 +/-    0.0000
Semi-Major Axis:     51.40333318 +/-    0.0000
Time of Perihelion: 2428442.8066 +/-       0.0
Perihelion:          36.77904015 +/-    0.0000
Aphelion:            66.02762621 +/-    0.0000
Period (y)              368.5489 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           43.77693896 +/-    0.0000
Ecliptic Y           -1.39629575 +/-    0.0000
Ecliptic Z            0.47838367 +/-    0.0000
Ecliptic XDOT         0.00076980 +/-    0.0000
Ecliptic YDOT         0.00267608 +/-    0.0000
Ecliptic ZDOT         0.00002708 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.80164328 +/-    0.0000
Geocenter to KBO     43.20563716 +/-    0.0000
# Hcoef:  4.06

The following table shows the complete astrometric record for 42301. 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 (42301) followed by the observatory code and reference code for the source of the astrometry.

1982 07  27.78148  23 56 15.42   +00 17 08.9         42301     260   h2921      
1982 11  06.43718  23 50 09.29   -00 22 15.4         42301     260   h2921      
1987 08  23.40799  00 18 20.91   +02 43 36.7         42301     261   f4657      
1990 10  15.27743  00 28 22.55   +03 49 52.3         42301     261   f4657      
1992 11  18.18472  00 35 10.51   +04 33 59.6         42301     261   f4657      
1994 08  11.45833  00 49 27.07   +06 05 02.6         42301     261   f4657      
1995 09  24.29688  00 51 21.93   +06 17 48.1         42301     261   f4657      
2001 09  15.34043  01 16 29.90   +08 53 39.9   21.   42301     644  Cj0240      
2001 09  18.37176  01 16 19.25   +08 52 36.8   21.4V 42301     691  Ce9602      
2001 09  18.39890  01 16 19.14   +08 52 36.1   21.4V 42301     691  Ce9602      
2001 09  18.42473  01 16 19.04   +08 52 35.8   21.5V 42301     691  Ce9602      
2001 10  21.19313  01 14 11.91   +08 39 55.9   20.5R 42301     695  Ce1249      
2001 10  21.25428  01 14 11.68   +08 39 54.4         42301     695  Ce1249      
2001 11  03.07140  01 13 22.49   +08 34 54.0   18.7  42301     304  Ce6659      
2001 11  03.11771  01 13 22.34   +08 34 52.9         42301     304  Ce6659      
2001 11  14.15895  01 12 43.85   +08 30 54.7   20.6R 42301     688  Ce1249      
2001 11  14.23341  01 12 43.58   +08 30 53.6         42301     688  Ce1249      
2001 11  14.26278  01 12 43.50   +08 30 52.8         42301     688  Ce1249      
2001 12  13.80966  01 11 31.39   +08 23 14.0   20.4R 42301     621  Ce4639      
2001 12  13.84000  01 11 31.31   +08 23 13.5   20.4R 42301     621  Ce4639      
2001 12  13.92431  01 11 31.18   +08 23 12.6   20.4R 42301     621  Ce4639      
2001 12  14.78517  01 11 29.96   +08 23 04.7   20.3R 42301     621  Ce4639      
2001 12  14.82324  01 11 29.93   +08 23 04.2   20.3R 42301     621  Ce4639      
2001 12  18.20083  01 11 25.60   +08 22 34.7   22.2R 42301     688  Ce4639      
2001 12  19.20595  01 11 24.48   +08 22 26.9         42301     688  Ce4639      
2001 12  20.06571  01 11 23.60   +08 22 20.8         42301     688  Ce4639      
2002 02  06.12735  01 12 06.06   +08 25 52.3   20.6R 42301     695  Ce9602      
2002 02  07.10688  01 12 08.77   +08 26 07.7         42301     695  Ce9602      
2002 02  07.14213  01 12 08.85   +08 26 08.4         42301     695  Ce9602      
2002 02  08.10771  01 12 11.56   +08 26 24.1         42301     695  Ce9602      
2002 09  15.60455  01 20 27.66   +09 17 33.0   21.   42301     608  Cj0240      
2002 11  22.17086  01 16 17.66   +08 52 31.7   21.5  42301     644  Cj0240      
2003 08  25.06937  01 25 24.77   +09 46 48.0   20.7R 42301     184  Ci4861      
2003 08  27.06550  01 25 20.20   +09 46 22.8   20.9R 42301     184  Ci4861      
2003 08  30.06847  01 25 12.88   +09 45 41.9   21.1R 42301     184  Ci4861      
2003 10  16.28425  01 22 28.43   +09 29 48.8   21.5V 42301     691  Cj0792      
2003 10  16.31214  01 22 28.31   +09 29 48.1   21.8V 42301     691  Cj0792      
2003 10  16.34002  01 22 28.21   +09 29 47.7   22.2V 42301     691  Cj0792      
2003 10  23.27020  01 22 00.70   +09 27 04.0   20.9V 42301     291  Ci8962      
2003 10  23.29366  01 22 00.61   +09 27 03.6   21.1V 42301     291  Ci8962      
2003 10  23.31707  01 22 00.51   +09 27 02.8   21.1V 42301     291  Ci8962      
2008 10  29.394043 01 40 45.54   +11 16 30.0   21.1V 42301     645  C~1QDk      
2008 10  29.394872 01 40 45.54   +11 16 30.0   21.9V 42301     645  C~1QDk      
2008 10  29.397360 01 40 45.53   +11 16 29.9   22.3V 42301     645  C~1QDk      
2010 10  07.38403  01 49 42.753  +12 06 45.67  21.1w 42301     F51  C~1vhs      
2010 10  07.39952  01 49 42.694  +12 06 45.36  21.1w 42301     F51  C~1vhs      
2010 10  07.41512  01 49 42.636  +12 06 45.04  21.0w 42301     F51  C~1vhs      
2010 11  03.45410  01 47 57.581  +11 57 02.93  21.1w 42301     F51  C~1vhs      
2010 11  03.46694  01 47 57.529  +11 57 02.67  21.2w 42301     F51  C~1vhs      
2010 11  03.47951  01 47 57.484  +11 57 02.37  21.1w 42301     F51  C~1vhs      
2012 11  06.29012  01 55 08.398  +12 36 36.31  21.3w 42301     F51  C~1vhs      
2012 11  06.30500  01 55 08.349  +12 36 35.97  21.2w 42301     F51  C~1vhs      
2012 11  06.31997  01 55 08.289  +12 36 35.67  21.2w 42301     F51  C~1vhs      
2012 11  06.33490  01 55 08.228  +12 36 35.34  21.3w 42301     F51  C~1vhs      
2013 02  11.23406  01 53 09.427  +12 24 31.72  21.2w 42301     F51  C~1vhs      
2013 02  11.23931  01 53 09.442  +12 24 31.88  21.4w 42301     F51  C~1vhs      
2013 02  11.24457  01 53 09.447  +12 24 31.81  21.4w 42301     F51  C~1vhs      
2013 02  11.24983  01 53 09.468  +12 24 32.01  21.2w 42301     F51  C~1vhs      
2013 10  03.41748  02 00 58.241  +13 08 01.69  21.0w 42301     F51  C~1vhs      
2013 10  03.43281  02 00 58.173  +13 08 01.40  21.1w 42301     F51  C~1vhs      
2013 10  03.44794  02 00 58.111  +13 08 01.17  21.0w 42301     F51  C~1vhs      
2013 11  26.23559  01 57 37.698  +12 49 58.95  21.1i 42301     F51  C~1vhs      
2013 11  26.25234  01 57 37.624  +12 49 58.49  21.0r 42301     F51  C~1vhs      
2013 11  26.25627  01 57 37.616  +12 49 58.48  21.2r 42301     F51  C~1vhs      
2014 09  02.48693  02 06 05.025  +13 34 48.60  21.3w 42301     F51  C~1vhs      
2014 09  02.49911  02 06 05.003  +13 34 48.41  21.3w 42301     F51  C~1vhs      
2014 09  02.51124  02 06 04.969  +13 34 48.37  21.5w 42301     F51  C~1vhs      
2014 09  02.52334  02 06 04.949  +13 34 48.24  21.5w 42301     F51  C~1vhs      
2014 09  29.52853  02 04 49.528  +13 28 27.78  21.2w 42301     F51  C~1vhs      
2014 09  29.53996  02 04 49.487  +13 28 27.56  21.4w 42301     F51  C~1vhs      
2014 09  29.55140  02 04 49.452  +13 28 27.33  21.2w 42301     F51  C~1vhs      
2014 09  29.56283  02 04 49.412  +13 28 27.21  21.2w 42301     F51  C~1vhs      
2014 11  11.44358  02 02 07.241  +13 14 11.16  20.6i 42301     F51  C~1vhs      
2014 11  11.45725  02 02 07.183  +13 14 10.75  20.7i 42301     F51  C~1vhs      
2014 11  11.47082  02 02 07.145  +13 14 10.92  20.6i 42301     F51  C~1vhs      
2014 11  11.48445  02 02 07.092  +13 14 10.19  20.7i 42301     F51  C~1vhs      
2014 11  18.26395  02 01 42.408  +13 11 56.30  21.5w 42301     F51  C~1vhs      
2014 11  18.27585  02 01 42.371  +13 11 55.80  21.5w 42301     F51  C~1vhs      
2014 11  18.28779  02 01 42.327  +13 11 55.61  21.4w 42301     F51  C~1vhs      
2014 11  18.29981  02 01 42.302  +13 11 55.49  21.4w 42301     F51  C~1vhs      
2014 12  13.33738  02 00 26.858  +13 04 58.08  21.3w 42301     F51  C~1vhs      
2014 12  13.35042  02 00 26.825  +13 04 57.87  21.3w 42301     F51  C~1vhs      
2014 12  13.36334  02 00 26.787  +13 04 57.62  21.5w 42301     F51  C~1vhs      
2014 12  13.37630  02 00 26.766  +13 04 57.54  21.4w 42301     F51  C~1vhs      
2015 01  22.22507  01 59 47.875  +13 00 52.97  21.5w 42301     F51  C~1vhs      
2015 01  22.24044  01 59 47.876  +13 00 53.04  21.4w 42301     F51  C~1vhs      
2015 01  22.25577  01 59 47.885  +13 00 53.06  21.3w 42301     F51  C~1vhs      
2015 01  22.27114  01 59 47.888  +13 00 53.09  21.3w 42301     F51  C~1vhs      
2016 10  29.28942  02 10 05.048  +13 56 00.55  21.1w 42301     F51  C~212c      
2016 10  29.30254  02 10 05.005  +13 56 00.24  21.1w 42301     F51  C~212c      
2016 10  29.30908  02 10 04.986  +13 56 00.11  21.0w 42301     F51  C~212c      
2016 10  29.31564  02 10 04.968  +13 56 00.02  21.0w 42301     F51  C~212c      
2016 10  29.32878  02 10 04.910  +13 55 59.66  21.0w 42301     F51  C~212c      
2016 10  29.33537  02 10 04.887  +13 55 59.44  21.0w 42301     F51  C~212c      
2016 10  29.34945  02 10 04.829  +13 55 59.14  21.0w 42301     F51  C~212c      
2016 10  29.35606  02 10 04.804  +13 55 59.20  21.1w 42301     F51  C~212c      
2016 10  29.36269  02 10 04.770  +13 55 58.91  21.1w 42301     F51  C~212c      
2016 10  29.36940  02 10 04.756  +13 55 58.81  21.0w 42301     F51  C~212c      
2016 10  29.37615  02 10 04.718  +13 55 58.75  21.2w 42301     F51  C~212c      
2016 10  29.38299  02 10 04.695  +13 55 58.53  21.1w 42301     F51  C~212c      
2016 10  29.38991  02 10 04.669  +13 55 58.41  21.1w 42301     F51  C~212c      
2016 10  29.45756  02 10 04.400  +13 55 57.09  21.2w 42301     F51  C~212c      
2016 10  29.47927  02 10 04.320  +13 55 56.66  21.1w 42301     F51  C~212c      
2016 10  29.48583  02 10 04.280  +13 55 56.53  21.1w 42301     F51  C~212c      
2016 10  29.49238  02 10 04.263  +13 55 56.29  21.3w 42301     F51  C~212c      
2016 10  29.49894  02 10 04.234  +13 55 56.24  21.1w 42301     F51  C~212c      
2016 10  29.50552  02 10 04.223  +13 55 56.06  20.2w 42301     F51  C~212c      
2016 10  29.51207  02 10 04.186  +13 55 55.99  21.2w 42301     F51  C~212c      
2016 10  29.51862  02 10 04.160  +13 55 55.78  21.2w 42301     F51  C~212c      
2016 10  31.28397  02 09 57.287  +13 55 20.24  21.2w 42301     F51  C~212c      
2016 10  31.29051  02 09 57.255  +13 55 20.01  21.1w 42301     F51  C~212c      
2016 10  31.32578  02 09 57.139  +13 55 19.36  21.2w 42301     F51  C~212c      
2016 10  31.33296  02 09 57.097  +13 55 19.12  21.1w 42301     F51  C~212c      
2016 10  31.33955  02 09 57.055  +13 55 18.78  20.9w 42301     F51  C~212c      
2016 10  31.34617  02 09 57.042  +13 55 18.81  21.3w 42301     F51  C~212c      
2016 10  31.35280  02 09 57.028  +13 55 18.69  21.0w 42301     F51  C~212c      

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    -0.16       0.00    -0.84
  2   0.2783      0.00    -0.17       0.00     0.01
  3   5.0722      0.00     0.31       0.00    -0.01
  4   8.2176      0.00     0.38       0.00     0.12
  5  10.3119      0.00    -0.12       0.00     0.08
  6  12.0402      0.00     0.23       0.00     0.30
  7  13.1595      0.00    -0.44       0.00     0.07
  8  19.1364      0.00     0.06       0.00     0.25
  9  19.1447      0.00    -0.33       0.00    -0.49
 10  19.1447      0.00    -0.51       0.00    -0.62
 11  19.1448      0.00    -0.60       0.00    -0.38
 12  19.2345      0.00     0.00       0.00     0.33
 13  19.2347      0.00     0.23       0.00     0.29
 14  19.2698      0.00    -0.21       0.00    -0.09
 15  19.2699      0.00     0.15       0.00    -0.14
 16  19.3001      0.00     0.66       0.00    -0.05
 17  19.3003      0.00     0.33       0.00     0.36
 18  19.3004      0.00     0.59       0.00     0.16
 19  19.3813      0.00     0.32       0.00     0.29
 20  19.3814      0.00    -0.18       0.00     0.09
 21  19.3816      0.00    -0.22       0.00     0.03
 22  19.3840      0.00    -0.05       0.00     0.41
 23  19.3841      0.00     0.33       0.00     0.27
 24  19.3933      0.00     0.08       0.00     0.00
 25  19.3961      0.00     0.03       0.00    -0.08
 26  19.3985      0.00     0.11       0.00     0.05
 27  19.5300      0.00     0.06       0.00     0.11
 28  19.5327      0.00     0.40       0.00     0.06
 29  19.5328      0.00     0.16       0.00     0.21
 30  19.5355      0.00     0.07       0.00     0.27
 31  20.1364      0.00    -0.51       0.00    -0.25
 32  20.3214      0.00    -0.10       0.00    -0.09
 33  21.0768      0.00    -0.04       0.00    -0.48
 34  21.0822      0.00    -0.17       0.00    -0.40
 35  21.0905      0.00    -0.27       0.00    -0.51
 36  21.2197      0.00     0.00       0.00    -0.01
 37  21.2198      0.00    -0.10       0.00    -0.05
 38  21.2199      0.00     0.09       0.00     0.21
 39  21.2388      0.00     0.02       0.00     0.23
 40  21.2389      0.00     0.08       0.00     0.38
 41  21.2390      0.00    -0.02       0.00     0.14
 42  26.2577      0.00     0.30       0.00    -0.35
 43  26.2577      0.00     0.35       0.00    -0.33
 44  26.2577      0.00     0.35       0.00    -0.38
 45  28.1960      0.00     0.14       0.00    -0.01
 46  28.1961      0.00     0.14       0.00     0.00
 47  28.1961      0.00     0.17       0.00     0.00
 48  28.2702      0.00     0.05       0.00    -0.03
 49  28.2702      0.00     0.02       0.00    -0.01
 50  28.2702      0.00     0.08       0.00    -0.04
 51  30.2793      0.00    -0.21       0.00    -0.08
 52  30.2793      0.00    -0.09       0.00    -0.11
 53  30.2794      0.00    -0.12       0.00    -0.10
 54  30.2794      0.00    -0.17       0.00    -0.12
 55  30.5447      0.00    -0.37       0.00     0.05
 56  30.5447      0.00    -0.32       0.00     0.15
 57  30.5447      0.00    -0.41       0.00     0.03
 58  30.5447      0.00    -0.27       0.00     0.17
 59  31.1859      0.00     0.30       0.00     0.08
 60  31.1859      0.00     0.12       0.00     0.08
 61  31.1859      0.00     0.02       0.00     0.13
 62  31.3332      0.00     0.16       0.00     0.10
 63  31.3333      0.00    -0.13       0.00    -0.07
 64  31.3333      0.00    -0.06       0.00    -0.01
 65  32.1005      0.00     0.23       0.00     0.07
 66  32.1005      0.00     0.28       0.00    -0.00
 67  32.1006      0.00     0.16       0.00     0.08
 68  32.1006      0.00     0.25       0.00     0.07
 69  32.1745      0.00     0.22       0.00     0.07
 70  32.1746      0.00     0.20       0.00     0.05
 71  32.1746      0.00     0.28       0.00     0.02
 72  32.1746      0.00     0.27       0.00     0.10
 73  32.2920      0.00     0.14       0.00     0.25
 74  32.2921      0.00     0.04       0.00     0.12
 75  32.2921      0.00     0.24       0.00     0.56
 76  32.2921      0.00     0.22       0.00     0.11
 77  32.3107      0.00     0.04       0.00     0.08
 78  32.3107      0.00     0.13       0.00    -0.19
 79  32.3108      0.00     0.11       0.00    -0.15
 80  32.3108      0.00     0.39       0.00    -0.04
 81  32.3793      0.00    -0.13       0.00     0.11
 82  32.3794      0.00    -0.15       0.00     0.08
 83  32.3794      0.00    -0.25       0.00     0.00
 84  32.3795      0.00    -0.09       0.00     0.10
 85  32.4886      0.00    -0.06       0.00    -0.18
 86  32.4886      0.00    -0.15       0.00    -0.14
 87  32.4886      0.00    -0.12       0.00    -0.14
 88  32.4887      0.00    -0.19       0.00    -0.14
 89  34.2574      0.00    -0.23       0.00     0.09
 90  34.2574      0.00    -0.09       0.00     0.04
 91  34.2574      0.00     0.01       0.00     0.05
 92  34.2575      0.00     0.13       0.00     0.09
 93  34.2575      0.00     0.04       0.00    -0.01
 94  34.2575      0.00     0.09       0.00    -0.10
 95  34.2575      0.00     0.05       0.00    -0.11
 96  34.2576      0.00     0.07       0.00     0.08
 97  34.2576      0.00    -0.04       0.00    -0.07
 98  34.2576      0.00     0.15       0.00    -0.04
 99  34.2576      0.00    -0.02       0.00     0.04
100  34.2576      0.00     0.04       0.00    -0.04
101  34.2577      0.00     0.06       0.00    -0.02
102  34.2578      0.00     0.06       0.00     0.03
103  34.2579      0.00     0.15       0.00     0.04
104  34.2579      0.00    -0.06       0.00     0.04
105  34.2579      0.00     0.07       0.00    -0.06
106  34.2580      0.00     0.03       0.00     0.02
107  34.2580      0.00     0.25       0.00    -0.03
108  34.2580      0.00     0.09       0.00     0.04
109  34.2580      0.00     0.09       0.00    -0.04
110  34.2628      0.00     0.02       0.00     0.21
111  34.2629      0.00    -0.08       0.00     0.11
112  34.2630      0.00     0.27       0.00     0.17
113  34.2630      0.00     0.07       0.00     0.08
114  34.2630      0.00    -0.17       0.00    -0.13
115  34.2630      0.00     0.03       0.00     0.03
116  34.2630      0.00     0.21       0.00     0.05

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.

42301    quality flag:3

Type:       9:4EEEEE  9:4EEEEE  9:4EEEEE

axisobj        52.013    52.014    52.013
ecceobj         0.284     0.284     0.284
incobj          0.753     0.753     0.753
qmin           36.368    36.369    36.368
qmax           67.939    67.939    67.940
amean          51.701    51.701    51.701
amin           51.095    51.096    51.095
amax           52.425    52.424    52.426
emean           0.285     0.285     0.285
emin            0.274     0.274     0.274
emax            0.296     0.296     0.296
imean           2.408     2.408     2.407
imin            2.185     2.187     2.184
imax            2.614     2.614     2.614
excite_mean     0.288     0.288     0.288
fracstop        1.000     1.000     1.000
cjmean          3.092     3.092     3.092

libcent 0       179.7     179.6     179.8
libamp  0       110.1     109.8     110.3
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       167.9     167.4     168.4
kozaiamp        179.9     179.9     180.0