Orbit Fit and Astrometric record for 13VF24

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: 13VF24    
# Created Tue Mar 26 01:09:44 2019
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   84 observations of   84
# Arc:  17.24y
# First observation: 2000/09/27
#  Last observation: 2017/12/24
# Chi-squared of fit:    59.41 DOF:  162 RMS:  0.15
# Min/Max residuals:    -0.36    0.60
# Exact a, adot, b, bdot, g, gdot:
  2.217189E-05  5.005427E-02 -1.433786E-07 -1.684883E-04  3.720057E-02 -6.803815E-03
# Covariance matrix:
  4.5132E-13 -4.8184E-14 -1.5291E-15  2.5828E-16 -1.7129E-14 -1.7529E-14
 -4.8184E-14  6.3438E-15  1.5438E-16 -5.0047E-17  4.4946E-15  2.8531E-15
 -1.5291E-15  1.5438E-16  2.5797E-13 -1.7054E-14 -8.0316E-16  1.2142E-16
  2.5828E-16 -5.0047E-17 -1.7054E-14  1.1650E-15 -1.0963E-16 -2.4997E-17
 -1.7129E-14  4.4946E-15 -8.0316E-16 -1.0963E-16  1.9301E-14  1.8778E-15
 -1.7529E-14  2.8531E-15  1.2142E-16 -2.4997E-17  1.8778E-15  1.5947E-15
#      lat0       lon0       xBary       yBary       zBary        JD0
  -20.527340   23.375938    0.324201   -0.330576   -0.882378  2451814.941168
# Heliocentric elements and errors
Epoch:              2451814.5000  =  2000/09/27
Mean Anomaly:          343.19625 +/-     0.002
Argument of Peri:      303.60768 +/-     0.000
Long of Asc Node:      113.73808 +/-     0.000
Inclination:            19.84259 +/-     0.000
Eccentricity:         0.33383887 +/-    0.0000
Semi-Major Axis:     39.84567018 +/-    0.0001
Time of Perihelion: 2456102.6882 +/-       0.7
Perihelion:          26.54363677 +/-    0.0003
Aphelion:            53.14770360 +/-    0.0003
Period (y)              251.5243 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           24.10689305 +/-    0.0001
Ecliptic Y           10.06959079 +/-    0.0000
Ecliptic Z           -9.42604391 +/-    0.0000
Ecliptic XDOT        -0.00190354 +/-    0.0000
Ecliptic YDOT         0.00319872 +/-    0.0000
Ecliptic ZDOT         0.00016413 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   27.77397992 +/-    0.0001
Geocenter to KBO     26.88140746 +/-    0.0001
# Hcoef:  8.16

The following table shows the complete astrometric record for 13VF24. 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 (13VF24) followed by the observatory code and reference code for the source of the astrometry.

2000 09  27.440425 01 56 47.46   -10 00 56.3   22.7V 13VF24    645  C~2hhx      
2000 09  27.441254 01 56 47.47   -10 00 56.3   22.4V 13VF24    645  C~2hhx      
2000 09  27.443742 01 56 47.46   -10 00 56.4   23.2V 13VF24    645  C~2hhx      
2010 11  07.38858  03 44 41.953  +01 21 03.92  22.1G 13VF24    F51  C~2rXy      
2010 11  16.50211  03 43 37.264  +01 17 32.74  22.6G 13VF24    F51  C~2rXy      
2010 11  16.51343  03 43 37.188  +01 17 32.46  22.7G 13VF24    F51  C~2rXy      
2010 11  30.40364  03 41 57.585  +01 14 09.57  22.2G 13VF24    F51  C~2rXy      
2011 11  25.44413  03 54 08.646  +02 29 56.33  22.2w 13VF24    F51  C~1vX5      
2011 11  25.46184  03 54 08.518  +02 29 56.30  22.5w 13VF24    F51  C~1vX5      
2011 11  25.47649  03 54 08.400  +02 29 56.04  22.2w 13VF24    F51  C~1vX5      
2011 11  25.49104  03 54 08.297  +02 29 55.77  22.2w 13VF24    F51  C~1vX5      
2012 10  20.53972  04 09 39.412  +03 58 18.92  22.5G 13VF24    F51  C~2rXy      
2012 11  12.49088  04 07 13.293  +03 47 57.43  22.2w 13VF24    F51  C~1vX5      
2012 11  12.50383  04 07 13.240  +03 47 57.58  22.1w 13VF24    F51  C~1vX5      
2012 11  12.51677  04 07 13.132  +03 47 56.96  22.4w 13VF24    F51  C~1vX5      
2012 11  12.52972  04 07 13.038  +03 47 56.54  22.0w 13VF24    F51  C~1vX5      
2013 01  25.27543  04 00 03.819  +03 55 38.74  22.9G 13VF24    F51  C~2rXy      
2013 11  06.41581  04 19 34.640  +05 03 52.64  22.3w 13VF24    F51  C~1vX5      
2013 11  06.42955  04 19 34.546  +05 03 52.57  21.9w 13VF24    F51  C~1vX5      
2013 11  06.44327  04 19 34.485  +05 03 52.04  22.1w 13VF24    F51  C~1vX5      
2013 11  28.40523  04 16 58.409  +04 57 24.13  22.2w 13VF24    F51  C~1vX5      
2013 11  28.41824  04 16 58.312  +04 57 23.92  22.4w 13VF24    F51  C~1vX5      
2013 11  28.43126  04 16 58.224  +04 57 23.79  22.3w 13VF24    F51  C~1vX5      
2013 11  28.44429  04 16 58.125  +04 57 23.72  22.4w 13VF24    F51  C~1vX5      
2013 12  10.29988  04 15 31.965  +04 56 05.53  22.1G 13VF24    F51  C~2rXy      
2014 01  21.24347  04 11 40.032  +05 05 56.01  22.5w 13VF24    F51  C~1vX5      
2014 01  21.25634  04 11 39.981  +05 05 56.44  22.6w 13VF24    F51  C~1vX5      
2014 01  21.26930  04 11 39.932  +05 05 56.94  22.3w 13VF24    F51  C~1vX5      
2014 01  21.28236  04 11 39.896  +05 05 57.23  22.0w 13VF24    F51  C~1vX5      
2014 09  18.62131  04 34 22.148  +06 38 47.51  22.6G 13VF24    F51  C~2rXy      
2014 10  02.55033  04 33 59.504  +06 32 06.17  22.4w 13VF24    F51  C~1vX5      
2014 10  02.56504  04 33 59.473  +06 32 05.83  22.1w 13VF24    F51  C~1vX5      
2014 10  02.57983  04 33 59.440  +06 32 05.78  22.4w 13VF24    F51  C~1vX5      
2014 11  23.48409  04 29 16.018  +06 11 11.00  22.3G 13VF24    F51  C~2rXy      
2015 01  09.27222  04 24 01.173  +06 13 01.70  22.4w 13VF24    F51  C~1vX5      
2015 01  09.28532  04 24 01.096  +06 13 01.99  22.5w 13VF24    F51  C~1vX5      
2015 01  09.29844  04 24 01.019  +06 13 02.21  22.4w 13VF24    F51  C~1vX5      
2015 01  15.22404  04 23 32.760  +06 15 09.45  22.3G 13VF24    F51  C~2rXy      
2015 01  15.23558  04 23 32.716  +06 15 09.67  22.2G 13VF24    F51  C~2rXy      
2015 01  15.24707  04 23 32.665  +06 15 09.92  22.0G 13VF24    F51  C~2rXy      
2015 01  15.25857  04 23 32.627  +06 15 10.06  22.3G 13VF24    F51  C~2rXy      
2015 01  19.22406  04 23 16.045  +06 16 49.15  22.4w 13VF24    F51  C~1vX5      
2015 01  19.23615  04 23 15.998  +06 16 49.42  22.1w 13VF24    F51  C~1vX5      
2015 01  19.24824  04 23 15.957  +06 16 49.76  22.5w 13VF24    F51  C~1vX5      
2015 01  19.26035  04 23 15.900  +06 16 50.16  22.4w 13VF24    F51  C~1vX5      
2015 10  08.48341  04 45 13.055  +07 39 17.07  22.4G 13VF24    F51  C~2rXy      
2015 10  08.49558  04 45 13.025  +07 39 16.66  22.1G 13VF24    F51  C~2rXy      
2015 10  08.50770  04 45 12.992  +07 39 16.34  22.3G 13VF24    F51  C~2rXy      
2015 10  08.51983  04 45 12.947  +07 39 16.05  22.0G 13VF24    F51  C~2rXy      
2015 10  09.48129  04 45 09.954  +07 38 50.35  22.7G 13VF24    F51  C~2rXy      
2015 10  09.49346  04 45 09.927  +07 38 49.90  23.2G 13VF24    F51  C~2rXy      
2015 10  09.50558  04 45 09.890  +07 38 49.65  22.2G 13VF24    F51  C~2rXy      
2015 10  09.51767  04 45 09.847  +07 38 49.28  22.5G 13VF24    F51  C~2rXy      
2015 11  18.46578  04 41 33.850  +07 23 48.68  22.6G 13VF24    F51  C~2rXy      
2015 12  05.46365  04 39 29.720  +07 20 45.82  22.4G 13VF24    F51  C~2rXy      
2015 12  05.47563  04 39 29.627  +07 20 46.08  22.3G 13VF24    F51  C~2rXy      
2015 12  05.48766  04 39 29.525  +07 20 45.84  21.9G 13VF24    F51  C~2rXy      
2015 12  05.49972  04 39 29.445  +07 20 45.48  22.2G 13VF24    F51  C~2rXy      
2015 12  31.42745  04 36 27.766  +07 21 59.21  22.4G 13VF24    F51  C~2rXy      
2016 01  01.33847  04 36 22.084  +07 22 09.91  22.7G 13VF24    F51  C~2rXy      
2016 01  01.35132  04 36 22.011  +07 22 10.40  22.5G 13VF24    F51  C~2rXy      
2016 01  01.36413  04 36 21.959  +07 22 10.71  22.3G 13VF24    F51  C~2rXy      
2016 01  14.35152  04 35 09.527  +07 25 48.60  23.0G 13VF24    F51  C~2rXy      
2016 01  14.36415  04 35 09.468  +07 25 48.75  22.8G 13VF24    F51  C~2rXy      
2016 01  14.37675  04 35 09.394  +07 25 48.77  22.6G 13VF24    F51  C~2rXy      
2016 01  14.38946  04 35 09.349  +07 25 49.18  22.2G 13VF24    F51  C~2rXy      
2016 01  28.36490  04 34 13.179  +07 31 46.60  22.1G 13VF24    F51  C~2rXy      
2016 10  28.57467  04 55 18.252  +08 39 32.36  22.3G 13VF24    F51  C~2rXy      
2016 10  28.58650  04 55 18.206  +08 39 32.19  22.4G 13VF24    F51  C~2rXy      
2016 10  28.59827  04 55 18.153  +08 39 31.87  22.3G 13VF24    F51  C~2rXy      
2016 10  28.61008  04 55 18.075  +08 39 32.06  22.4G 13VF24    F51  C~2rXy      
2017 11  18.38782  05 04 49.383  +09 41 20.56  22.1G 13VF24    F51  C~2rXy      
2017 11  18.40087  05 04 49.288  +09 41 20.27  22.8G 13VF24    F51  C~2rXy      
2017 11  18.41385  05 04 49.204  +09 41 20.12  22.8G 13VF24    F51  C~2rXy      
2017 11  18.42684  05 04 49.100  +09 41 20.03  22.1G 13VF24    F51  C~2rXy      
2017 11  19.40281  05 04 42.405  +09 41 08.52  22.5G 13VF24    F51  C~2rXy      
2017 12  08.46712  05 02 23.723  +09 38 50.91  22.3G 13VF24    F51  C~2rXy      
2017 12  08.47961  05 02 23.641  +09 38 50.70  22.1G 13VF24    F51  C~2rXy      
2017 12  08.49204  05 02 23.521  +09 38 50.68  22.4G 13VF24    F51  C~2rXy      
2017 12  08.50452  05 02 23.445  +09 38 50.67  21.8G 13VF24    F51  C~2rXy      
2017 12  24.27032  05 00 27.618  +09 39 23.09  22.7G 13VF24    F51  C~2rXy      
2017 12  24.28307  05 00 27.521  +09 39 23.32  22.8G 13VF24    F51  C~2rXy      
2017 12  24.29583  05 00 27.421  +09 39 23.35  22.4G 13VF24    F51  C~2rXy      
2017 12  24.30855  05 00 27.334  +09 39 23.43  22.4G 13VF24    F51  C~2rXy      

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    -0.18       0.00    -0.05
  2   0.0000      0.00     0.04       0.00    -0.01
  3   0.0000      0.00     0.11       0.00     0.01
  4  10.1107      0.00     0.10       0.00    -0.10
  5  10.1357      0.00     0.07       0.00    -0.14
  6  10.1357      0.00     0.17       0.00    -0.19
  7  10.1738      0.00     0.09       0.00    -0.03
  8  11.1595      0.00     0.04       0.00    -0.18
  9  11.1595      0.00     0.09       0.00     0.03
 10  11.1596      0.00    -0.06       0.00    -0.03
 11  11.1596      0.00     0.00       0.00    -0.10
 12  12.0632      0.00    -0.01       0.00     0.02
 13  12.1261      0.00    -0.32       0.00     0.17
 14  12.1261      0.00     0.28       0.00     0.60
 15  12.1262      0.00     0.06       0.00     0.25
 16  12.1262      0.00     0.04       0.00     0.11
 17  12.3281      0.00    -0.36       0.00     0.05
 18  13.1088      0.00    -0.33       0.00    -0.26
 19  13.1088      0.00    -0.35       0.00    -0.01
 20  13.1088      0.00     0.12       0.00    -0.22
 21  13.1690      0.00    -0.13       0.00    -0.02
 22  13.1690      0.00    -0.12       0.00    -0.09
 23  13.1690      0.00     0.02       0.00    -0.08
 24  13.1691      0.00    -0.00       0.00    -0.01
 25  13.2015      0.00     0.21       0.00     0.07
 26  13.3164      0.00     0.08       0.00     0.05
 27  13.3164      0.00    -0.04       0.00     0.09
 28  13.3164      0.00    -0.12       0.00     0.21
 29  13.3165      0.00     0.01       0.00     0.11
 30  13.9745      0.00     0.22       0.00    -0.09
 31  14.0126      0.00    -0.26       0.00    -0.01
 32  14.0127      0.00    -0.12       0.00     0.08
 33  14.0127      0.00    -0.01       0.00     0.47
 34  14.1548      0.00     0.12       0.00     0.06
 35  14.2829      0.00     0.04       0.00    -0.11
 36  14.2829      0.00    -0.09       0.00    -0.08
 37  14.2830      0.00    -0.21       0.00    -0.11
 38  14.2992      0.00    -0.09       0.00    -0.02
 39  14.2992      0.00     0.03       0.00    -0.07
 40  14.2993      0.00     0.05       0.00    -0.09
 41  14.2993      0.00     0.27       0.00    -0.22
 42  14.3102      0.00    -0.21       0.00     0.03
 43  14.3102      0.00    -0.18       0.00    -0.02
 44  14.3102      0.00    -0.06       0.00     0.00
 45  14.3103      0.00    -0.18       0.00     0.08
 46  15.0282      0.00    -0.16       0.00     0.07
 47  15.0282      0.00    -0.03       0.00    -0.02
 48  15.0282      0.00     0.05       0.00    -0.01
 49  15.0283      0.00    -0.05       0.00     0.02
 50  15.0309      0.00    -0.13       0.00     0.02
 51  15.0309      0.00     0.06       0.00    -0.11
 52  15.0310      0.00     0.10       0.00    -0.04
 53  15.0310      0.00     0.06       0.00    -0.09
 54  15.1404      0.00     0.14       0.00    -0.15
 55  15.1869      0.00     0.13       0.00    -0.05
 56  15.1870      0.00     0.09       0.00     0.28
 57  15.1870      0.00    -0.08       0.00     0.11
 58  15.1870      0.00     0.09       0.00    -0.18
 59  15.2580      0.00     0.19       0.00     0.04
 60  15.2605      0.00    -0.09       0.00    -0.20
 61  15.2605      0.00     0.04       0.00     0.13
 62  15.2606      0.00     0.47       0.00     0.28
 63  15.2961      0.00    -0.08       0.00     0.26
 64  15.2962      0.00    -0.02       0.00     0.15
 65  15.2962      0.00    -0.18       0.00    -0.10
 66  15.2962      0.00     0.10       0.00     0.04
 67  15.3345      0.00     0.25       0.00    -0.00
 68  16.0852      0.00    -0.25       0.00    -0.17
 69  16.0853      0.00     0.02       0.00    -0.09
 70  16.0853      0.00     0.18       0.00    -0.16
 71  16.0853      0.00    -0.03       0.00     0.28
 72  17.1415      0.00     0.05       0.00     0.01
 73  17.1416      0.00    -0.02       0.00    -0.12
 74  17.1416      0.00     0.08       0.00    -0.12
 75  17.1416      0.00    -0.13       0.00    -0.05
 76  17.1443      0.00    -0.07       0.00     0.06
 77  17.1965      0.00    -0.03       0.00     0.05
 78  17.1965      0.00     0.16       0.00    -0.13
 79  17.1966      0.00    -0.22       0.00    -0.11
 80  17.1966      0.00     0.06       0.00    -0.09
 81  17.2398      0.00     0.18       0.00    -0.05
 82  17.2398      0.00     0.10       0.00     0.09
 83  17.2399      0.00    -0.02       0.00     0.03
 84  17.2399      0.00     0.05       0.00     0.03

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.

13VF24    quality flag:3

Type:           3:2E      3:2E      3:2E
Type:          6:4II     6:4II     6:4II

axisobj        39.884    39.884    39.884
ecceobj         0.334     0.334     0.334
incobj         19.842    19.842    19.842
qmin           26.012    26.012    26.012
qmax           53.418    53.419    53.417
amean          39.454    39.454    39.454
amin           39.118    39.118    39.118
amax           39.884    39.883    39.884
emean           0.271     0.271     0.271
emin            0.160     0.160     0.160
emax            0.340     0.340     0.340
imean          20.793    20.794    20.792
imin           17.664    17.665    17.663
imax           24.426    24.426    24.426
excite_mean     0.450     0.450     0.450
fracstop        1.000     1.000     1.000
cjmean          2.819     2.819     2.819

libcent 0       179.4     179.4     179.4
libamp  0        18.8      18.7      18.8
libcent 1       180.9     180.9     180.9
libamp  1       136.7     136.6     136.9
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       278.0     278.0     278.0
kozaiamp         65.7      65.7      65.7