Orbit Fit and Astrometric record for 308193

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: 308193    
# Created Sun Oct 22 01:36:41 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   68 observations of   70
# Arc:  14.29y
# First observation: 2001/12/19
#  Last observation: 2016/04/05
# Chi-squared of fit:   657.11 DOF:  130 RMS:  0.55
# Min/Max residuals:    -0.96    2.03
# Exact a, adot, b, bdot, g, gdot:
  1.091708E-05  2.210655E-02  6.131928E-06  1.148592E-02  2.486099E-02 -2.922634E-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
    8.032087  128.418126    0.637070    0.103630   -0.735108  2452263.063923
# Heliocentric elements and errors
Epoch:              2452262.5000  =  2001/12/19
Mean Anomaly:          302.44080 +/-     0.000
Argument of Peri:       89.29108 +/-     0.000
Long of Asc Node:      112.77189 +/-     0.000
Inclination:            28.56192 +/-     0.000
Eccentricity:         0.14254334 +/-    0.0000
Semi-Major Axis:     43.59790064 +/-    0.0000
Time of Perihelion: 2469074.1001 +/-       0.0
Perihelion:          37.38331047 +/-    0.0000
Aphelion:            49.81249081 +/-    0.0000
Period (y)              287.8767 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -24.71045259 +/-    0.0000
Ecliptic Y           32.18876341 +/-    0.0000
Ecliptic Z            5.62061854 +/-    0.0000
Ecliptic XDOT        -0.00160814 +/-    0.0000
Ecliptic YDOT        -0.00190112 +/-    0.0000
Ecliptic ZDOT         0.00120773 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.96731750 +/-    0.0000
Geocenter to KBO     40.22375725 +/-    0.0000
# Hcoef:  4.70

The following table shows the complete astrometric record for 308193. 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 (308193) followed by the observatory code and reference code for the source of the astrometry.

2001 12  19.56318  08 52 37.70   +25 53 59.0   20.5R 308193    644  Cy2105      
2002 03  11.14476  08 46 01.96   +26 27 48.5   20.5R 308193    644  Cy2105      
2002 03  12.25889  08 45 57.71   +26 28 01.9   20.5R 308193    644  Cy2105      
2003 03  07.32477  08 52 34.63   +26 44 38.8   20.5R 308193    644  Cy2105      
2003 04  26.136541 08 50 50.99   +26 46 53.5   20.7V 308193    645  C~1QZ9      
2003 04  26.137371 08 50 50.99   +26 46 53.5   20.7V 308193    645  C~1QZ9      
2003 04  26.139859 08 50 50.99   +26 46 53.5   21.3V 308193    645  C~1QZ9      
2004 03  17.293695 08 58 13.16   +27 03 40.4   20.7V 308193    645  C~1QZ9      
2004 03  17.294524 08 58 13.15   +27 03 40.4   20.5V 308193    645  C~1QZ9      
2004 03  17.297012 08 58 13.15   +27 03 40.4   21.2V 308193    645  C~1QZ9      
2005 02  06.28440  09 07 45.91   +27 06 57.1   21.3R 308193    644  Cv4440      
2005 02  06.28561  09 07 46.04   +27 06 56.6   20.8R 308193    644  Cv4440      
2005 02  06.30540  09 07 45.82   +27 06 58.1   20.8R 308193    644  Cv4440      
2005 02  06.30660  09 07 45.89   +27 06 57.2   20.8R 308193    644  Cv4440      
2005 02  06.33201  09 07 45.64   +27 06 58.3   21.0R 308193    644  Cv4440      
2005 02  06.33594  09 07 45.73   +27 06 58.0   21.6R 308193    644  Cv4440      
2005 03  11.33968  09 05 01.48   +27 18 28.0         308193    644  Cv4440      
2005 03  13.21523  09 04 53.84   +27 18 52.5         308193    644  Cv4440      
2006 02  23.34024  09 12 47.31   +27 28 36.3         308193    644  Cv4440      
2006 02  23.39112  09 12 47.03   +27 28 37.4         308193    644  Cv4440      
2006 03  25.22142  09 10 39.07   +27 35 47.2         308193    644  Cv4440      
2006 03  25.31881  09 10 38.79   +27 35 47.9         308193    644  Cv4440      
2008 02  12.43454  09 27 00.89   +27 50 12.9   20.4R 308193    675  Cx7535      
2008 02  12.47593  09 27 00.65   +27 50 14.6   20.3R 308193    675  Cx7535      
2008 02  13.42244  09 26 55.49   +27 50 41.3   20.5R 308193    675  Cx7535      
2008 02  13.46460  09 26 55.23   +27 50 42.6   20.1R 308193    675  Cx7535      
2008 12  20.90930  09 37 45.80   +27 30 20.5   20.7R 308193    250  S~06An      
2008 12  20.91624  09 37 45.78   +27 30 20.8         308193    250  S~06An      
2008 12  20.92249  09 37 45.76   +27 30 21.0         308193    250  S~06An      
2008 12  20.92944  09 37 45.74   +27 30 21.3         308193    250  S~06An      
2011 03  11.21984  09 44 56.47   +28 32 31.2   20.1R 308193    688  C~0U0A      
2011 03  11.27299  09 44 56.21   +28 32 32.1         308193    688  C~0U0A      
2011 03  31.93900  09 43 30.44   +28 36 26.0   20.5R 308193    C20  C~0U3K      
2011 03  31.94601  09 43 30.43   +28 36 27.2   20.3R 308193    C20  C~0U3K      
2011 03  31.96267  09 43 30.30   +28 36 27.5   20.7R 308193    C20  C~0U3K      
2012 02  04.56811  09 54 55.449  +28 24 22.09  20.5i 308193    F51  C~1vxD      
2012 02  04.58064  09 54 55.379  +28 24 22.59  20.5i 308193    F51  C~1vxD      
2012 02  04.61663  09 54 55.186  +28 24 23.89  20.4r 308193    F51  C~1vxD      
2012 02  04.63825  09 54 55.070  +28 24 24.66  20.5r 308193    F51  C~1vxD      
2013 02  08.38030  10 01 28.625  +28 33 31.01  20.6g 308193    F51  C~1vxD      
2013 02  08.39326  10 01 28.568  +28 33 31.47  20.4r 308193    F51  C~1vxD      
2013 02  08.40494  10 01 28.512  +28 33 31.97  20.5r 308193    F51  C~1vxD      
2013 02  13.36349  10 01 01.524  +28 36 23.70  20.6w 308193    F51  C~1vxD      
2013 02  13.37730  10 01 01.448  +28 36 24.22  20.6w 308193    F51  C~1vxD      
2013 02  13.39110  10 01 01.372  +28 36 24.59  20.6w 308193    F51  C~1vxD      
2013 02  13.40500  10 01 01.297  +28 36 25.04  20.6w 308193    F51  C~1vxD      
2014 03  25.25098  10 04 40.160  +28 57 15.45  20.7w 308193    F51  C~1vxD      
2014 03  25.26289  10 04 40.108  +28 57 15.62  20.6w 308193    F51  C~1vxD      
2014 03  25.27486  10 04 40.055  +28 57 15.69  20.6w 308193    F51  C~1vxD      
2014 03  25.28693  10 04 40.003  +28 57 15.84  20.6w 308193    F51  C~1vxD      
2014 12  27.46293  10 18 34.244  +28 12 06.25  20.7w 308193    F51  C~1vxD      
2014 12  27.47524  10 18 34.216  +28 12 06.75  20.8w 308193    F51  C~1vxD      
2014 12  27.48757  10 18 34.167  +28 12 07.25  20.7w 308193    F51  C~1vxD      
2014 12  27.49984  10 18 34.135  +28 12 07.79  20.9w 308193    F51  C~1vxD      
2015 01  27.56338  10 16 37.746  +28 34 15.16  20.4w 308193    F51  C~1vxD      
2015 01  27.57435  10 16 37.693  +28 34 15.60  20.4w 308193    F51  C~1vxD      
2015 01  27.58534  10 16 37.637  +28 34 16.06  20.4w 308193    F51  C~1vxD      
2015 01  27.59635  10 16 37.584  +28 34 16.51  20.5w 308193    F51  C~1vxD      
2015 04  20.32560  10 10 15.718  +29 02 53.04  20.5w 308193    F51  C~1vxD      
2015 04  20.33846  10 10 15.693  +29 02 52.85  20.6w 308193    F51  C~1vxD      
2015 04  20.35130  10 10 15.651  +29 02 52.78  20.6w 308193    F51  C~1vxD      
2015 04  20.36428  10 10 15.620  +29 02 52.77  20.6w 308193    F51  C~1vxD      
2016 02  09.36281  10 22 41.45   +28 45 05.3   20.3V 308193    U57  C~1nm8      
2016 02  09.46569  10 22 40.93   +28 45 09.4   20.8V 308193    U57  C~1pIu      
2016 04  05.21690  10 18 02.42   +29 06 44.4   20.0V 308193    U57  C~1xZS      
2016 04  05.25092  10 18 02.28   +29 06 44.7   20.6V 308193    U57  C~1xZS      
2016 04  05.34612  10 18 01.91   +29 06 45.5   20.6V 308193    U57  C~1xZS      
2016 04  05.39659  10 18 01.73   +29 06 45.7   20.6V 308193    U57  C~1xZS      
2016 04  06.19518  10 17 58.82   +29 06 48.4   20.5V 308193    U57  C~1xZS      
2016 04  06.27377  10 17 58.52   +29 06 48.9   21.0V 308193    U57  C~1xZS      

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     0.13
  2   0.2234      0.00    -0.26       0.00    -0.47
  3   0.2264      0.00    -0.44       0.00    -0.32
  4   1.2122      0.00    -0.46       0.00    -0.35
  5   1.3486      0.00    -0.46       0.00    -0.96
  6   1.3486      0.00    -0.46       0.00    -0.95
  7   1.3486      0.00    -0.47       0.00    -0.93
  8   2.2416      0.00     0.10       0.00    -0.74
  9   2.2416      0.00    -0.01       0.00    -0.75
 10   2.2416      0.00     0.13       0.00    -0.77
 11   3.1341      0.00    -0.02       0.00     1.40
 12   3.1341      0.00     2.03       0.00     0.87
 13   3.1341      0.00     0.37       0.00     1.82
 14   3.1341      0.00     1.52       0.00     0.88
 15   3.1342      0.00    -0.12       0.00     1.28
 16   3.1342      0.00     1.56       0.00     0.87
 17   3.2246      0.00    -0.71       0.00    -0.55
 18   3.2297      0.00    -0.47       0.00    -0.06
 19   4.1801      0.00     0.07       0.00    -0.57
 20   4.1802      0.00    -0.16       0.00    -0.57
 21   4.2619      0.00    -0.59       0.00    -0.40
 22   4.2622      0.00     0.02       0.00    -0.31
 23   6.1489      0.00     0.82       0.00     0.86
 24   6.1490      0.00     0.65       0.00     1.38
 25   6.1516      0.00     0.68       0.00     1.01
 26   6.1517      0.00     0.27       0.00     1.13
 27   7.0044      0.00    -0.56       0.00    -0.45
 28   7.0044      0.00    -0.56       0.00    -0.40
 29   7.0044      0.00    -0.60       0.00    -0.43
 30   7.0044      0.00    -0.60       0.00    -0.38
 31   9.2229      0.00    -0.17       0.00    -0.06
 32   9.2230      0.00    -0.17       0.00    -0.11
 33   9.2796      0.00    -0.07       0.00     1.65
 34   9.2796      0.00 (   0.14)      0.00 (   2.82)
 35   9.2797      0.00 (  -0.96)      0.00 (   3.05)
 36  10.1273      0.00    -0.18       0.00    -0.22
 37  10.1274      0.00    -0.21       0.00    -0.17
 38  10.1275      0.00    -0.19       0.00    -0.15
 39  10.1275      0.00    -0.18       0.00    -0.15
 40  11.1398      0.00    -0.32       0.00    -0.20
 41  11.1398      0.00    -0.10       0.00    -0.21
 42  11.1399      0.00     0.02       0.00    -0.13
 43  11.1535      0.00    -0.19       0.00    -0.21
 44  11.1535      0.00    -0.18       0.00    -0.16
 45  11.1535      0.00    -0.17       0.00    -0.26
 46  11.1536      0.00    -0.14       0.00    -0.28
 47  12.2620      0.00     0.05       0.00    -0.20
 48  12.2620      0.00     0.05       0.00    -0.16
 49  12.2620      0.00     0.04       0.00    -0.23
 50  12.2621      0.00     0.05       0.00    -0.21
 51  13.0209      0.00    -0.03       0.00    -0.02
 52  13.0210      0.00     0.01       0.00    -0.04
 53  13.0210      0.00    -0.27       0.00    -0.05
 54  13.0210      0.00    -0.29       0.00    -0.03
 55  13.1061      0.00     0.17       0.00    -0.06
 56  13.1061      0.00     0.18       0.00    -0.07
 57  13.1062      0.00     0.16       0.00    -0.07
 58  13.1062      0.00     0.17       0.00    -0.07
 59  13.3327      0.00     0.37       0.00     0.10
 60  13.3327      0.00     0.45       0.00    -0.00
 61  13.3328      0.00     0.27       0.00     0.02
 62  13.3328      0.00     0.26       0.00     0.10
 63  14.1405      0.00    -0.28       0.00    -0.14
 64  14.1407      0.00     0.19       0.00    -0.04
 65  14.2934      0.00     0.51       0.00    -0.41
 66  14.2935      0.00     0.34       0.00    -0.24
 67  14.2937      0.00     0.16       0.00     0.20
 68  14.2939      0.00     0.28       0.00     0.22
 69  14.2960      0.00     0.07       0.00    -0.01
 70  14.2963      0.00    -0.07       0.00     0.23

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.

308193    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        43.349    43.349    43.350
ecceobj         0.139     0.139     0.139
incobj         28.617    28.617    28.617
qmin           36.766    36.808    36.779
qmax           50.428    50.415    50.411
amean          43.409    43.408    43.408
amin           43.064    43.066    43.063
amax           43.806    43.800    43.798
emean           0.135     0.135     0.135
emin            0.120     0.120     0.120
emax            0.151     0.151     0.151
imean          27.162    27.162    27.162
imin           26.787    26.790    26.787
imax           27.535    27.537    27.542
excite_mean     0.476     0.476     0.476
fracstop        1.000     1.000     1.000
cjmean          2.812     2.812     2.812

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       187.3     187.4     187.5
kozaiamp        179.9     180.0     179.9