Orbit Fit and Astrometric record for 13FN28

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: 13FN28    
# Created Tue Dec 12 02:37:56 2017
# Orbit generated from Bernstein formalism
# Fitting   81 observations of   84
# Arc:  12.11y
# First observation: 2003/03/25
#  Last observation: 2015/05/06
Preliminary a, adot, b, bdot, g, gdot:
  -0.170200   0.109310   0.026249  -0.016785   0.054642   0.000000
# Chi-squared of fit:   109.51 DOF:  156 RMS:  0.21
# Min/Max residuals:    -0.75    0.54
# Exact a, adot, b, bdot, g, gdot:
  2.260566E-05  5.932618E-02 -2.298696E-06 -9.047969E-03  4.284898E-02 -2.053947E-02
# Covariance matrix:
  3.1531E-13 -5.0393E-14 -2.3694E-14  5.4505E-15 -1.5162E-14 -2.0199E-14
 -5.0393E-14  9.8714E-15  5.4620E-15 -1.2845E-15  1.3425E-15  4.8268E-15
 -2.3694E-14  5.4620E-15  1.6054E-13 -1.5475E-14  1.6352E-15  3.1035E-15
  5.4505E-15 -1.2845E-15 -1.5475E-14  1.6253E-15 -2.1858E-16 -7.3412E-16
 -1.5162E-14  1.3425E-15  1.6352E-15 -2.1858E-16  1.3129E-14  4.3686E-16
 -2.0199E-14  4.8268E-15  3.1035E-15 -7.3412E-16  4.3686E-16  2.7684E-15
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.622456  127.696148   -0.833440   -0.015421   -0.544494  2452723.879703
# Heliocentric elements and errors
Epoch:              2452720.5000  =  2003/03/22
Mean Anomaly:          336.11127 +/-     0.001
Argument of Peri:      249.97806 +/-     0.001
Long of Asc Node:      299.19650 +/-     0.000
Inclination:             8.63225 +/-     0.000
Eccentricity:         0.43016051 +/-    0.0000
Semi-Major Axis:     35.75726645 +/-    0.0007
Time of Perihelion: 2457902.9539 +/-       0.1
Perihelion:          20.37590251 +/-    0.0005
Aphelion:            51.13863039 +/-    0.0010
Period (y)              213.8231 +/-      0.01
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -15.25961114 +/-    0.0000
Ecliptic Y           18.38443296 +/-    0.0000
Ecliptic Z           -0.66081516 +/-    0.0000
Ecliptic XDOT        -0.00219366 +/-    0.0000
Ecliptic YDOT        -0.00337359 +/-    0.0000
Ecliptic ZDOT        -0.00054054 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   23.90145987 +/-    0.0000
Geocenter to KBO     23.33777745 +/-    0.0001
# Hcoef:  8.24

The following table shows the complete astrometric record for 13FN28. 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 (13FN28) followed by the observatory code and reference code for the source of the astrometry.

2003 03  25.37896  08 38 41.45   +16 46 36.4   21.9R 13FN28    568  C~1ztR      
2003 03  25.39490  08 38 41.39   +16 46 36.7   22.0R 13FN28    568  C~1ztR      
2003 03  25.41294  08 38 41.33   +16 46 36.9   22.1R 13FN28    568  C~1ztR      
2005 05  10.135278 09 05 08.86   +13 53 27.4   21.8V 13FN28    645  C~1vWx      
2005 05  10.136108 09 05 08.86   +13 53 27.4   21.4V 13FN28    645  C~1vWx      
2005 05  10.138596 09 05 08.87   +13 53 27.4   22.7V 13FN28    645  C~1vWx      
2011 01  30.41408  10 42 10.711  +01 50 34.35  21.4w 13FN28    F51  C~1vWx      
2011 01  30.41540  10 42 10.695  +01 50 34.35  21.4w 13FN28    F51  C~1vWx      
2011 01  30.42885  10 42 10.609  +01 50 34.73  21.7w 13FN28    F51  C~1vWx      
2011 01  30.43019  10 42 10.590  +01 50 34.71  21.5w 13FN28    F51  C~1vWx      
2011 01  30.44491  10 42 10.487  +01 50 35.10  21.4w 13FN28    F51  C~1vWx      
2011 01  30.44622  10 42 10.477  +01 50 35.12  21.5w 13FN28    F51  C~1vWx      
2011 01  30.45970  10 42 10.378  +01 50 35.59  21.6w 13FN28    F51  C~1vWx      
2011 01  30.46102  10 42 10.373  +01 50 35.57  21.5w 13FN28    F51  C~1vWx      
2011 02  04.46018  10 41 34.429  +01 52 59.74  21.5w 13FN28    F51  C~1vWx      
2011 02  04.47444  10 41 34.324  +01 53 00.20  21.5w 13FN28    F51  C~1vWx      
2011 02  04.48890  10 41 34.205  +01 53 00.55  21.5w 13FN28    F51  C~1vWx      
2011 02  04.50339  10 41 34.111  +01 53 01.03  21.6w 13FN28    F51  C~1vWx      
2011 02  05.44831  10 41 27.070  +01 53 30.66  21.4w 13FN28    F51  C~1vWx      
2011 02  05.46254  10 41 26.964  +01 53 31.08  21.3w 13FN28    F51  C~1vWx      
2011 02  05.47700  10 41 26.847  +01 53 31.59  21.5w 13FN28    F51  C~1vWx      
2011 02  05.49143  10 41 26.739  +01 53 32.00  21.4w 13FN28    F51  C~1vWx      
2012 01  19.46782  10 59 20.064  -00 24 03.84  21.5w 13FN28    F51  C~1vWx      
2012 01  19.49067  10 59 19.948  -00 24 03.61  21.5w 13FN28    F51  C~1vWx      
2012 01  19.50473  10 59 19.874  -00 24 03.46  21.5w 13FN28    F51  C~1vWx      
2012 01  19.51880  10 59 19.803  -00 24 03.29  21.5w 13FN28    F51  C~1vWx      
2012 02  15.50363  10 56 19.732  -00 12 55.00  21.4r 13FN28    F51  C~1vWx      
2012 02  15.51548  10 56 19.639  -00 12 54.66  21.2r 13FN28    F51  C~1vWx      
2012 02  15.52936  10 56 19.532  -00 12 54.11  21.0i 13FN28    F51  C~1vWx      
2012 02  15.54219  10 56 19.422  -00 12 53.67  21.0i 13FN28    F51  C~1vWx      
2012 03  16.32116  10 52 13.796  +00 09 10.35  21.2w 13FN28    F51  C~1vWx      
2012 03  16.33546  10 52 13.661  +00 09 10.98  21.4w 13FN28    F51  C~1vWx      
2012 03  16.34976  10 52 13.587  +00 09 11.78  21.4w 13FN28    F51  C~1vWx      
2012 03  19.33894  10 51 49.712  +00 11 37.89  21.3w 13FN28    F51  C~1vWx      
2012 03  19.35289  10 51 49.601  +00 11 38.64  21.3w 13FN28    F51  C~1vWx      
2012 03  19.36685  10 51 49.486  +00 11 39.30  21.3w 13FN28    F51  C~1vWx      
2012 03  19.38081  10 51 49.373  +00 11 39.97  21.3w 13FN28    F51  C~1vWx      
2013 03  16.09813  11 08 48.120  -02 06 25.68  21.3r 13FN28    807  C~1M7X      
2013 03  16.09813  11 08 48.14   -02 06 25.8         13FN28    W84  C~2J9e      
2013 03  16.16724  11 08 47.555  -02 06 22.04        13FN28    807  C~1M7X      
2013 03  16.16725  11 08 47.56   -02 06 22.3   21.3r 13FN28    W84  C~2J9e      
2013 03  16.23751  11 08 46.954  -02 06 18.59        13FN28    807  C~1M7X      
2013 03  16.23751  11 08 46.97   -02 06 18.8         13FN28    W84  C~2J9e      
2013 05  07.96911  11 03 35.212  -01 27 07.07  21.4r 13FN28    807  C~1M7X      
2013 05  07.98949  11 03 35.161  -01 27 06.44        13FN28    807  C~1M7X      
2013 05  08.98423  11 03 32.868  -01 26 37.77        13FN28    807  C~1M7X      
2014 02  28.45256  11 27 52.901  -04 35 49.00  21.1w 13FN28    F51  C~1vWx      
2014 02  28.46463  11 27 52.800  -04 35 48.53  21.2w 13FN28    F51  C~1vWx      
2014 02  28.47670  11 27 52.701  -04 35 48.03  21.2w 13FN28    F51  C~1vWx      
2014 02  28.48878  11 27 52.602  -04 35 47.48  21.3w 13FN28    F51  C~1vWx      
2014 03  24.39996  11 24 33.447  -04 16 43.36  21.4w 13FN28    F51  C~1vWx      
2014 03  24.41226  11 24 33.341  -04 16 42.52  21.3w 13FN28    F51  C~1vWx      
2014 03  24.42453  11 24 33.231  -04 16 41.97  21.2w 13FN28    F51  C~1vWx      
2014 03  24.43685  11 24 33.136  -04 16 41.34  21.2w 13FN28    F51  C~1vWx      
2014 03  28.05190  11 24 04.08   -04 13 32.3   21.7V 13FN28    W84  C~2J9e      
2014 03  28.12031  11 24 03.53   -04 13 28.8         13FN28    W84  C~2J9e      
2014 03  28.18806  11 24 02.98   -04 13 25.2         13FN28    W84  C~2J9e      
2014 11  28.63957  11 47 34.473  -06 31 22.23  21.6w 13FN28    F51  C~1vWx      
2014 11  28.64219  11 47 34.479  -06 31 22.52  21.5w 13FN28    F51  C~1vWx      
2014 11  28.64482  11 47 34.512  -06 31 22.60  21.5w 13FN28    F51  C~1vWx      
2014 11  28.64746  11 47 34.525  -06 31 22.70  21.6w 13FN28    F51  C~1vWx      
2014 12  02.62189  11 47 58.218  -06 35 39.03  21.5w 13FN28    F51  C~1vWx      
2014 12  02.62650  11 47 58.224  -06 35 39.47  21.7w 13FN28    F51  C~1vWx      
2014 12  02.63110  11 47 58.263  -06 35 39.78  21.7w 13FN28    F51  C~1vWx      
2014 12  02.63569  11 47 58.279  -06 35 40.14  21.6w 13FN28    F51  C~1vWx      
2015 02  25.46992  11 45 29.677  -06 54 59.34  21.7w 13FN28    F51  C~1vWx      
2015 02  25.48388  11 45 29.580  -06 54 58.96  21.5w 13FN28    F51  C~1vWx      
2015 02  25.49784  11 45 29.466  -06 54 58.27  21.6w 13FN28    F51  C~1vWx      
2015 02  25.51173  11 45 29.357  -06 54 57.98  21.3w 13FN28    F51  C~1vWx      
2015 03  22.40187  11 42 03.774  -06 36 27.33  21.4w 13FN28    F51  C~1vWx      
2015 03  22.41574  11 42 03.657  -06 36 26.60  21.3w 13FN28    F51  C~1vWx      
2015 03  22.42957  11 42 03.536  -06 36 25.93  21.3w 13FN28    F51  C~1vWx      
2015 03  22.44339  11 42 03.419  -06 36 25.17  21.2w 13FN28    F51  C~1vWx      
2015 03  23.43068  11 41 55.148  -06 35 34.23  21.2w 13FN28    F51  C~1vWx      
2015 03  23.44460  11 41 55.027  -06 35 33.57  21.4w 13FN28    F51  C~1vWx      
2015 03  23.45847  11 41 54.906  -06 35 32.81  21.3w 13FN28    F51  C~1vWx      
2015 04  25.32117  11 37 54.603  -06 06 51.39  21.2r 13FN28    F51  C~1vWx      
2015 04  25.33263  11 37 54.541  -06 06 50.75  21.2r 13FN28    F51  C~1vWx      
2015 04  25.34426  11 37 54.483  -06 06 50.05  21.5r 13FN28    F51  C~1vWx      
2015 04  25.35567  11 37 54.394  -06 06 49.42  21.1r 13FN28    F51  C~1vWx      
2015 05  06.31181  11 37 00.292  -05 58 30.26  21.2i 13FN28    F51  C~1vWx      
2015 05  06.32573  11 37 00.246  -05 58 29.73  20.9i 13FN28    F51  C~1vWx      
2015 05  06.33959  11 37 00.178  -05 58 29.14  20.9i 13FN28    F51  C~1vWx      
2015 05  06.35341  11 37 00.120  -05 58 28.45  20.8i 13FN28    F51  C~1vWx      

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    -0.15       0.00    -0.21
  2   0.0000     -0.91    -0.19       0.07    -0.11
  3   0.0001     -1.79    -0.10       0.05    -0.09
  4   2.1266  25033.85     0.04   -3841.38    -0.10
  5   2.1266  25033.85     0.00   -3841.38    -0.10
  6   2.1267  25033.99     0.03   -3841.34    -0.06
  7   7.8523 136852.68     0.19  -19723.73     0.04
  8   7.8523 136852.36     0.08  -19723.82    -0.03
  9   7.8523 136850.42     0.25  -19723.87     0.04
 10   7.8523 136850.05     0.09  -19724.00    -0.07
 11   7.8523 136847.76     0.12  -19724.14    -0.07
 12   7.8523 136847.55     0.12  -19724.17    -0.09
 13   7.8524 136845.31    -0.01  -19724.19     0.02
 14   7.8524 136845.22     0.11  -19724.24    -0.02
 15   7.8661 136045.54     0.05  -19762.46     0.01
 16   7.8661 136043.19     0.11  -19762.53     0.05
 17   7.8661 136040.61    -0.03  -19762.80    -0.11
 18   7.8662 136038.47     0.27  -19762.78     0.01
 19   7.8688 135881.44     0.14  -19768.65     0.01
 20   7.8688 135879.09     0.21  -19768.77    -0.01
 21   7.8689 135876.47     0.06  -19768.85     0.02
 22   7.8689 135874.08     0.14  -19768.99    -0.03
 23   8.8216 163441.55     0.01  -23360.59     0.10
 24   8.8217 163438.77     0.10  -23360.99     0.09
 25   8.8217 163436.99     0.10  -23361.24     0.09
 26   8.8217 163435.27     0.15  -23361.45     0.12
 27   8.8956 158976.71    -0.12  -23597.16     0.13
 28   8.8957 158974.43    -0.01  -23597.29     0.03
 29   8.8957 158971.72     0.08  -23597.24     0.11
 30   8.8957 158969.01    -0.05  -23597.34     0.03
 31   8.9773 152795.80    -0.05  -23416.98     0.32
 32   8.9773 152792.51    -0.39  -23417.00     0.13
 33   8.9773 152790.45     0.49  -23416.47     0.50
 34   8.9855 152189.83     0.06  -23378.37     0.07
 35   8.9856 152187.00     0.06  -23378.11     0.16
 36   8.9856 152184.13     0.02  -23377.98     0.11
 37   8.9856 152181.31     0.02  -23377.82     0.09
 38   9.9760 180803.81    -0.17  -27749.62    -0.19
 39   9.9760 180803.24    -0.75  -27749.58    -0.15
 40   9.9761 180786.86    -0.46  -27748.20     0.19
 41   9.9761 180787.15    -0.17  -27748.51    -0.12
 42   9.9763 180770.25    -0.12  -27747.45    -0.12
 43   9.9763 180769.72    -0.66  -27747.28     0.06
 44  10.1207 171705.71 (  -0.08) -26572.38 (   0.82)
 45  10.1208 171704.11 (  -0.08) -26571.89 (   0.86)
 46  10.1235 171631.68     0.13  -26549.13     0.42
 47  10.9324 218229.16    -0.05  -33119.33     0.08
 48  10.9325 218225.80    -0.03  -33119.26     0.04
 49  10.9325 218222.48     0.02  -33119.13     0.05
 50  10.9325 218219.11     0.04  -33118.94     0.13
 51  10.9980 211527.39     0.19  -32682.04    -0.18
 52  10.9980 211523.70    -0.08  -32681.48     0.08
 53  10.9981 211520.13    -0.24  -32681.36    -0.09
 54  10.9981 211516.92    -0.02  -32681.04    -0.06
 55  11.0080 210541.18    -0.19  -32587.96    -0.05
 56  11.0082 210522.82    -0.03  -32586.31    -0.14
 57  11.0084 210504.38    -0.11  -32584.52    -0.07
 58  11.6804 263155.57    -0.19  -36432.48    -0.25
 59  11.6804 263156.08    -0.44  -36432.91    -0.50
 60  11.6804 263157.36     0.07  -36432.83    -0.24
 61  11.6804 263157.94    -0.12  -36432.91    -0.14
 62  11.6913 264281.57     0.01  -36698.88     0.33
 63  11.6913 264282.23    -0.55  -36699.55    -0.03
 64  11.6913 264283.97    -0.03  -36699.81     0.02
 65  11.6913 264284.92    -0.29  -36700.29    -0.15
 66  11.9236 260053.88    -0.11  -39455.15     0.24
 67  11.9236 260050.02     0.49  -39455.12     0.13
 68  11.9237 260045.25     0.18  -39454.68     0.42
 69  11.9237 260041.04     0.43  -39454.86     0.10
 70  11.9918 251719.85     0.30  -38903.01    -0.16
 71  11.9919 251715.11     0.34  -38902.55    -0.12
 72  11.9919 251710.30     0.29  -38902.21    -0.20
 73  11.9920 251705.53     0.29  -38901.70    -0.11
 74  11.9947 251371.49     0.08  -38870.35    -0.08
 75  11.9947 251366.69     0.06  -38870.03    -0.19
 76  11.9947 251361.79    -0.06  -38869.55    -0.14
 77  12.0847 241659.91     0.44  -37617.87    -0.27
 78  12.0847 241657.29     0.54  -37617.25    -0.12
 79  12.0848 241654.74 (   0.75) -37616.53 (   0.15)
 80  12.0848 241651.24    -0.04  -37616.09     0.13
 81  12.1148 239426.80    -0.50  -37174.60     0.05
 82  12.1148 239424.83     0.01  -37174.07     0.05
 83  12.1149 239422.08    -0.26  -37173.57     0.01
 84  12.1149 239419.57    -0.31  -37172.87     0.18

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.

13FN28    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        35.401    35.403    35.399
ecceobj         0.425     0.425     0.425
incobj          8.649     8.649     8.649
qmin           20.275    20.284    20.271
qmax           51.130    51.722    51.219
amean          35.189    35.531    35.349
amin           34.737    34.780    34.848
amax           35.806    36.455    35.880
emean           0.418     0.404     0.419
emin            0.409     0.386     0.411
emax            0.428     0.428     0.428
imean          10.658    12.873    10.906
imin           10.195    10.195    10.195
imax           11.382    14.353    11.459
excite_mean     0.458     0.462     0.460
fracstop        0.002     0.009     0.003
cjmean          2.784     2.783     2.783

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       255.7     264.3     257.1
kozaiamp          6.5      11.2       6.0