Orbit Fit and Astrometric record for 08ST291

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: 08ST291   
# Created Sat Jan 19 02:09:06 2019
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   85 observations of   85
# Arc:   9.27y
# First observation: 2008/09/24
#  Last observation: 2017/12/31
# Chi-squared of fit:   155.98 DOF:  164 RMS:  0.24
# Min/Max residuals:    -0.78    1.07
# Exact a, adot, b, bdot, g, gdot:
  8.730288E-06  1.555367E-02  5.400010E-06  4.702104E-03  1.794760E-02  7.561733E-03
# Covariance matrix:
  1.0591E-13 -4.4488E-14  1.0837E-14 -1.0506E-14 -2.7333E-14 -2.6121E-13
 -4.4488E-14  3.2014E-14 -9.3717E-15  8.9910E-15  2.1639E-14  2.2346E-13
  1.0837E-14 -9.3717E-15  6.7759E-14 -1.2046E-14 -1.2884E-15 -7.1623E-14
 -1.0506E-14  8.9910E-15 -1.2046E-14  4.5798E-15  5.1640E-15  6.7168E-14
 -2.7333E-14  2.1639E-14 -1.2884E-15  5.1640E-15  8.6736E-14  1.3240E-13
 -2.6121E-13  2.2346E-13 -7.1623E-14  6.7168E-14  1.3240E-13  1.6678E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   12.458676    5.994227    0.076102    0.215493   -0.975301  2454733.671394
# Heliocentric elements and errors
Epoch:              2454734.5000  =  2008/09/25
Mean Anomaly:           19.31159 +/-     0.006
Argument of Peri:      324.99432 +/-     0.005
Long of Asc Node:      330.97257 +/-     0.000
Inclination:            20.74842 +/-     0.000
Eccentricity:         0.57765186 +/-    0.0001
Semi-Major Axis:    100.46411007 +/-    0.0201
Time of Perihelion: 2435004.3545 +/-       8.4
Perihelion:          42.43083046 +/-    0.0129
Aphelion:           158.49738968 +/-    0.0331
Period (y)             1006.9887 +/-      0.30
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           55.11098523 +/-    0.0009
Ecliptic Y            5.70582546 +/-    0.0001
Ecliptic Z           12.02061803 +/-    0.0002
Ecliptic XDOT         0.00072463 +/-    0.0000
Ecliptic YDOT         0.00246321 +/-    0.0000
Ecliptic ZDOT         0.00094914 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   56.69418315 +/-    0.0009
Geocenter to KBO     55.71741957 +/-    0.0009
# Hcoef:  4.31

The following table shows the complete astrometric record for 08ST291. 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 (08ST291) followed by the observatory code and reference code for the source of the astrometry.

2008 09  24.17064  00 01 49.60   +13 47 51.7   21.5R 08ST291   675  C~0BHs      
2008 09  24.31175  00 01 49.01   +13 47 48.8   22.1R 08ST291   675  C~0BHs      
2008 09  25.16143  00 01 46.03   +13 47 32.2   21.1R 08ST291   675  C~0BHs      
2008 09  25.20268  00 01 45.87   +13 47 32.3   21.5R 08ST291   675  C~0BHs      
2008 10  07.11526  00 01 04.45   +13 43 27.4         08ST291   675  C~0BHs      
2008 10  29.325628 23 59 55.36   +13 35 05.7   21.6V 08ST291   645  C~1Fih      
2008 10  29.326457 23 59 55.36   +13 35 05.7   21.3V 08ST291   645  C~1Fih      
2008 10  29.328945 23 59 55.35   +13 35 05.7   22.5V 08ST291   645  C~1Fih      
2008 11  19.07748  23 59 09.11   +13 27 37.1         08ST291   675  C~0BHs      
2008 11  19.33084  23 59 08.65   +13 27 32.5         08ST291   675  C~0BHs      
2009 06  28.39402  00 07 53.54   +14 25 55.8         08ST291   675  C~0BHs      
2009 06  29.39168  00 07 53.67   +14 26 13.5         08ST291   675  C~0BHs      
2009 06  30.38845  00 07 53.73   +14 26 31.4         08ST291   675  C~0BHs      
2009 07  02.47729  00 07 53.67   +14 27 06.9         08ST291   675  C~0BHs      
2009 07  07.46522  00 07 52.35   +14 28 24.4         08ST291   675  C~0BHs      
2009 07  31.30379  00 07 24.73   +14 31 58.7         08ST291   675  C~0BHs      
2009 07  31.40035  00 07 24.54   +14 31 58.7         08ST291   675  C~0BHs      
2009 07  31.49606  00 07 24.34   +14 32 00.0         08ST291   675  C~0BHs      
2009 08  15.41042  00 06 50.86   +14 31 56.6         08ST291   675  C~0BHs      
2009 08  16.35636  00 06 48.43   +14 31 52.9         08ST291   675  C~0BHs      
2009 10  11.39312  00 03 44.51   +14 18 15.3         08ST291   675  C~0BHs      
2009 10  11.44477  00 03 44.35   +14 18 14.2         08ST291   675  C~0BHs      
2009 10  18.22399  00 03 22.35   +14 15 42.0         08ST291   568  C~0BHs      
2009 10  18.25466  00 03 22.25   +14 15 41.3         08ST291   568  C~0BHs      
2010 09  18.47813  00 07 56.508  +15 01 26.63  22.1G 08ST291   F51  C~2r7I      
2010 09  18.49014  00 07 56.484  +15 01 26.23  21.2G 08ST291   F51  C~2r7I      
2010 10  09.11773  00 06 45.04   +14 54 49.4   21.5R 08ST291   688  C~0NmC      
2010 10  09.18404  00 06 44.81   +14 54 47.0         08ST291   688  C~0NmC      
2011 09  19.35933  00 10 44.624  +15 36 10.39  21.5G 08ST291   F51  C~2r7I      
2011 09  19.36990  00 10 44.604  +15 36 10.48  21.6G 08ST291   F51  C~2r7I      
2011 09  19.38334  00 10 44.538  +15 36 10.15  21.8G 08ST291   F51  C~2r7I      
2011 09  19.39491  00 10 44.498  +15 36 10.03  22.0G 08ST291   F51  C~2r7I      
2011 10  19.26903  00 09 03.099  +15 26 10.65  21.8G 08ST291   F51  C~2r7I      
2011 10  19.28289  00 09 03.051  +15 26 10.23  21.6G 08ST291   F51  C~2r7I      
2011 10  19.29677  00 09 03.018  +15 26 09.91  21.8G 08ST291   F51  C~2r7I      
2011 10  19.31269  00 09 02.964  +15 26 09.51  22.0G 08ST291   F51  C~2r7I      
2012 08  12.60662  00 15 24.389  +16 15 53.91  22.2G 08ST291   F51  C~2r7I      
2012 10  08.29977  00 12 25.325  +16 04 16.38  21.9G 08ST291   F51  C~2r7I      
2012 10  08.31430  00 12 25.280  +16 04 16.18  21.8G 08ST291   F51  C~2r7I      
2012 10  08.32881  00 12 25.228  +16 04 15.78  21.7G 08ST291   F51  C~2r7I      
2012 10  08.34335  00 12 25.174  +16 04 15.49  21.7G 08ST291   F51  C~2r7I      
2013 10  25.42451  00 14 18.055  +16 31 46.01  22.3G 08ST291   F51  C~2r7I      
2013 10  25.43572  00 14 18.023  +16 31 45.61  21.9G 08ST291   F51  C~2r7J      
2014 09  19.51181  00 19 03.375  +17 16 52.04  21.7G 08ST291   F51  C~2r7J      
2014 09  19.52438  00 19 03.327  +17 16 51.81  22.0G 08ST291   F51  C~2r7J      
2014 09  19.53648  00 19 03.287  +17 16 51.65  22.0G 08ST291   F51  C~2r7J      
2014 09  19.54858  00 19 03.244  +17 16 51.44  21.8G 08ST291   F51  C~2r7J      
2014 10  02.30874  00 18 19.443  +17 13 09.69  21.2G 08ST291   F51  C~2r7J      
2014 10  02.32064  00 18 19.392  +17 13 09.55  21.8G 08ST291   F51  C~2r7J      
2014 10  02.33251  00 18 19.361  +17 13 09.20  21.9G 08ST291   F51  C~2r7J      
2014 10  02.34441  00 18 19.314  +17 13 09.05  20.9G 08ST291   F51  C~2r7J      
2014 12  08.33821  00 15 35.785  +16 49 21.45  22.2G 08ST291   F51  C~2r7J      
2015 08  01.50939  00 23 58.412  +17 53 11.08  21.2G 08ST291   F51  C~2r7J      
2015 12  14.26694  00 18 14.188  +17 20 06.13  21.7G 08ST291   F51  C~2r7J      
2015 12  14.27967  00 18 14.188  +17 20 05.85  22.3G 08ST291   F51  C~2r7J      
2015 12  14.29230  00 18 14.178  +17 20 05.61  22.2G 08ST291   F51  C~2r7J      
2015 12  14.30489  00 18 14.167  +17 20 05.51  22.2G 08ST291   F51  C~2r7J      
2016 10  09.30366  00 23 19.248  +18 14 48.26  21.9G 08ST291   F51  C~2r7J      
2016 10  09.31530  00 23 19.209  +18 14 48.10  22.0G 08ST291   F51  C~2r7J      
2016 10  09.31595  00 23 19.210  +18 14 48.02  21.9G 08ST291   F51  C~2r7J      
2016 10  09.32757  00 23 19.163  +18 14 47.48  22.1G 08ST291   F51  C~2r7J      
2016 10  09.32821  00 23 19.181  +18 14 47.71  21.7G 08ST291   F51  C~2r7J      
2016 10  09.33991  00 23 19.133  +18 14 47.68  22.8G 08ST291   F51  C~2r7J      
2016 10  09.34056  00 23 19.125  +18 14 47.39  21.9G 08ST291   F51  C~2r7J      
2016 11  06.38170  00 21 53.809  +18 04 24.10  22.4G 08ST291   F51  C~2r7J      
2016 11  06.38299  00 21 53.800  +18 04 23.92  22.0G 08ST291   F51  C~2r7J      
2016 11  06.39371  00 21 53.773  +18 04 23.64  22.1G 08ST291   F51  C~2r7J      
2016 11  06.39499  00 21 53.776  +18 04 23.61  21.9G 08ST291   F51  C~2r7J      
2016 11  06.40576  00 21 53.746  +18 04 23.39  22.1G 08ST291   F51  C~2r7J      
2016 11  06.40704  00 21 53.749  +18 04 23.45  21.8G 08ST291   F51  C~2r7J      
2016 11  06.41779  00 21 53.715  +18 04 23.06  22.3G 08ST291   F51  C~2r7J      
2016 11  06.41908  00 21 53.709  +18 04 22.94  22.1G 08ST291   F51  C~2r7J      
2017 08  15.45917  00 28 49.400  +18 56 00.48  22.0G 08ST291   F51  C~2r7J      
2017 08  15.47086  00 28 49.375  +18 56 00.29  21.9G 08ST291   F51  C~2r7J      
2017 08  15.48254  00 28 49.347  +18 56 00.08  21.7G 08ST291   F51  C~2r7J      
2017 09  23.33988  00 26 54.80   +18 50 48.5   21.5R 08ST291   G37  C~2LR4      
2017 09  23.43215  00 26 54.51   +18 50 46.9         08ST291   G37  C~2LR4      
2017 09  30.33790  00 26 30.998  +18 48 51.21  21.2G 08ST291   F51  C~2r7J      
2017 09  30.34887  00 26 30.962  +18 48 51.16  21.2G 08ST291   F51  C~2r7J      
2017 09  30.35988  00 26 30.933  +18 48 50.70        08ST291   F51  C~2r7J      
2017 09  30.37094  00 26 30.903  +18 48 50.44  22.1G 08ST291   F51  C~2r7J      
2017 10  18.43759  00 25 30.450  +18 42 49.65  21.9G 08ST291   F51  C~2r7J      
2017 10  18.44981  00 25 30.428  +18 42 49.53  21.7G 08ST291   F51  C~2r7J      
2017 10  18.46207  00 25 30.412  +18 42 48.99  22.2G 08ST291   F51  C~2r7J      
2017 12  31.26452  00 23 34.293  +18 18 56.35  22.3G 08ST291   F51  C~2r7J      

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     1.07       0.00     0.18
  2   0.0004      0.00    -0.22       0.00    -0.05
  3   0.0027      0.00    -0.17       0.00    -0.37
  4   0.0028      0.00    -0.37       0.00     0.52
  5   0.0354      0.00    -0.78       0.00     0.34
  6   0.0962      0.00     0.45       0.00    -0.40
  7   0.0963      0.00     0.48       0.00    -0.38
  8   0.0963      0.00     0.44       0.00    -0.33
  9   0.1531      0.00     0.04       0.00    -0.61
 10   0.1538      0.00    -0.38       0.00    -0.18
 11   0.7590      0.00    -0.17       0.00     0.19
 12   0.7617      0.00    -0.16       0.00    -0.13
 13   0.7645      0.00    -0.23       0.00     0.19
 14   0.7702      0.00     0.03       0.00     0.16
 15   0.7838      0.00    -0.06       0.00     0.35
 16   0.8491      0.00    -0.09       0.00     0.31
 17   0.8494      0.00    -0.19       0.00    -0.03
 18   0.8496      0.00    -0.43       0.00     0.95
 19   0.8905      0.00    -0.57       0.00     0.04
 20   0.8930      0.00     0.07       0.00    -0.03
 21   1.0465      0.00     0.01       0.00     0.11
 22   1.0466      0.00     0.21       0.00     0.16
 23   1.0652      0.00    -0.02       0.00    -0.28
 24   1.0653      0.00    -0.05       0.00    -0.29
 25   1.9830      0.00     0.07       0.00    -0.03
 26   1.9831      0.00     0.35       0.00    -0.23
 27   2.0396      0.00    -0.23       0.00     1.00
 28   2.0397      0.00    -0.28       0.00     0.02
 29   2.9848      0.00     0.07       0.00    -0.22
 30   2.9848      0.00     0.33       0.00     0.04
 31   2.9848      0.00     0.05       0.00    -0.07
 32   2.9849      0.00     0.05       0.00    -0.00
 33   3.0667      0.00     0.06       0.00    -0.00
 34   3.0667      0.00     0.01       0.00    -0.11
 35   3.0667      0.00     0.19       0.00    -0.12
 36   3.0668      0.00     0.14       0.00    -0.16
 37   3.8835      0.00     0.16       0.00     0.10
 38   4.0387      0.00     0.03       0.00    -0.14
 39   4.0387      0.00     0.10       0.00    -0.03
 40   4.0388      0.00     0.07       0.00    -0.13
 41   4.0388      0.00     0.01       0.00    -0.11
 42   5.0849      0.00    -0.07       0.00    -0.01
 43   5.0849      0.00    -0.04       0.00    -0.15
 44   5.9859      0.00     0.12       0.00    -0.02
 45   5.9859      0.00     0.06       0.00    -0.05
 46   5.9859      0.00     0.08       0.00    -0.02
 47   5.9860      0.00     0.06       0.00    -0.05
 48   6.0209      0.00    -0.01       0.00    -0.12
 49   6.0209      0.00    -0.15       0.00    -0.04
 50   6.0210      0.00     0.00       0.00    -0.16
 51   6.0210      0.00    -0.08       0.00    -0.09
 52   6.2044      0.00     0.22       0.00    -0.06
 53   6.8510      0.00     0.19       0.00    -0.11
 54   7.2200      0.00    -0.01       0.00     0.01
 55   7.2200      0.00     0.09       0.00    -0.07
 56   7.2200      0.00     0.03       0.00    -0.11
 57   7.2201      0.00    -0.05       0.00    -0.01
 58   8.0414      0.00    -0.09       0.00     0.04
 59   8.0415      0.00    -0.08       0.00     0.12
 60   8.0415      0.00    -0.03       0.00     0.05
 61   8.0415      0.00    -0.14       0.00    -0.25
 62   8.0415      0.00     0.16       0.00    -0.01
 63   8.0415      0.00     0.04       0.00     0.20
 64   8.0415      0.00    -0.05       0.00    -0.08
 65   8.1183      0.00     0.03       0.00     0.13
 66   8.1183      0.00    -0.05       0.00    -0.02
 67   8.1183      0.00    -0.04       0.00    -0.06
 68   8.1183      0.00     0.06       0.00    -0.06
 69   8.1184      0.00     0.04       0.00    -0.03
 70   8.1184      0.00     0.13       0.00     0.06
 71   8.1184      0.00     0.04       0.00    -0.08
 72   8.1184      0.00     0.01       0.00    -0.17
 73   8.8906      0.00     0.08       0.00     0.30
 74   8.8906      0.00     0.11       0.00     0.10
 75   8.8907      0.00     0.10       0.00    -0.12
 76   8.9970      0.00    -0.16       0.00     0.39
 77   8.9973      0.00     0.24       0.00     0.24
 78   9.0162      0.00    -0.30       0.00     0.16
 79   9.0162      0.00    -0.27       0.00     0.30
 80   9.0163      0.00    -0.13       0.00     0.04
 81   9.0163      0.00    -0.01       0.00    -0.03
 82   9.0658      0.00    -0.43       0.00    -0.10
 83   9.0658      0.00    -0.16       0.00     0.05
 84   9.0658      0.00     0.20       0.00    -0.23
 85   9.2679      0.00     0.28       0.00    -0.04

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.

08ST291    quality flag:3

Type:       6:1EEEEE  6:1EEEEE  6:1EEEEE

axisobj       100.783   100.784   100.781
ecceobj         0.577     0.577     0.577
incobj         20.757    20.757    20.757
qmin           39.660    39.684    39.635
qmax          163.278   163.555   163.222
amean          99.418    99.419    99.419
amin           97.665    97.654    97.678
amax          101.961   102.078   101.979
emean           0.583     0.583     0.583
emin            0.564     0.564     0.564
emax            0.602     0.602     0.602
imean          20.581    20.587    20.576
imin           19.202    19.229    19.188
imax           22.114    22.114    22.114
excite_mean     0.681     0.681     0.681
fracstop        1.000     1.000     1.000
cjmean          3.066     3.066     3.066

libcent 0        85.2      84.9      85.0
libamp  0        47.1      47.4      47.1
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       302.4     294.3     306.3
kozaiamp        180.0     180.0     180.0