Orbit Fit and Astrometric record for 305543

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: 305543    
# Created Sun Oct 22 01:36:41 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   62 observations of   62
# Arc:   6.90y
# First observation: 2008/08/25
#  Last observation: 2015/07/19
# Chi-squared of fit:   113.99 DOF:  118 RMS:  0.24
# Min/Max residuals:    -1.13    0.86
# Exact a, adot, b, bdot, g, gdot:
  1.895088E-05  3.088752E-02  7.602931E-06  8.128234E-03  2.688143E-02 -4.312089E-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
  -21.192562   -9.756208    0.304898   -0.347052   -0.895145  2454703.881384
# Heliocentric elements and errors
Epoch:              2454704.5000  =  2008/08/26
Mean Anomaly:          349.24012 +/-     0.000
Argument of Peri:      331.40239 +/-     0.000
Long of Asc Node:       43.17812 +/-     0.000
Inclination:            25.15963 +/-     0.000
Eccentricity:         0.40942517 +/-    0.0000
Semi-Major Axis:     62.39313971 +/-    0.0000
Time of Perihelion: 2460084.8246 +/-       0.0
Perihelion:          36.84781813 +/-    0.0000
Aphelion:            87.93846129 +/-    0.0000
Period (y)              492.8485 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           35.07904326 +/-    0.0000
Ecliptic Y           -6.34484072 +/-    0.0000
Ecliptic Z          -13.44778576 +/-    0.0000
Ecliptic XDOT         0.00043067 +/-    0.0000
Ecliptic YDOT         0.00312078 +/-    0.0000
Ecliptic ZDOT         0.00093052 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.10048017 +/-    0.0000
Geocenter to KBO     37.20051517 +/-    0.0000
# Hcoef:  5.49

The following table shows the complete astrometric record for 305543. 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 (305543) followed by the observatory code and reference code for the source of the astrometry.

2008 08  25.38063  23 59 42.63   -23 14 09.8   20.8R 305543    675  C~034C      
2008 08  25.41557  23 59 42.46   -23 14 11.2   20.9R 305543    675  C~034C      
2008 08  26.35491  23 59 38.08   -23 14 44.7   21.0R 305543    675  C~034C      
2008 08  26.37714  23 59 37.93   -23 14 45.1   20.8R 305543    675  C~034C      
2008 09  25.26109  23 57 04.70   -23 29 11.5         305543    675  C~034C      
2008 09  25.36159  23 57 04.12   -23 29 13.7         305543    675  C~034C      
2008 09  26.25867  23 56 59.38   -23 29 32.0         305543    675  C~034C      
2008 09  26.35971  23 56 58.83   -23 29 34.0         305543    675  C~034C      
2008 10  20.04481  23 54 59.88   -23 33 44.4         305543    807  C~034C      
2008 10  20.14247  23 54 59.41   -23 33 44.4         305543    807  C~034C      
2008 11  30.02582  23 52 56.40   -23 22 10.2         305543    807  C~034C      
2008 11  30.16252  23 52 56.23   -23 22 05.7         305543    807  C~034C      
2009 07  26.38519  00 07 32.65   -21 43 47.3         305543    675  C~0Abb      
2009 07  29.37638  00 07 25.49   -21 45 38.1         305543    675  C~0Abb      
2009 07  29.46897  00 07 25.27   -21 45 41.9         305543    675  C~0Abb      
2009 07  30.37266  00 07 22.95   -21 46 15.7         305543    675  C~0Abb      
2009 07  30.46937  00 07 22.69   -21 46 19.1         305543    675  C~0Abb      
2009 10  12.24925  00 01 44.51   -22 22 31.9   20.7R 305543    688  C~0Abb      
2009 10  12.30853  00 01 44.22   -22 22 32.2         305543    688  C~0Abb      
2010 08  13.16065  00 12 40.80   -20 42 03.6   19.7R 305543    807   ~0NIL      
2010 08  13.26567  00 12 40.41   -20 42 07.6         305543    807   ~0NIL      
2010 08  13.27371  00 12 40.39   -20 42 08.0         305543    807   ~0NIL      
2011 10  01.02937  00 14 50.20   -19 53 41.5   21.0R 305543    304  C~0Z8y      
2011 10  01.17861  00 14 49.40   -19 53 44.6         305543    304  C~0Z8y      
2011 10  01.33933  00 14 48.53   -19 53 47.8         305543    304  C~0Z8y      
2011 10  02.02786  00 14 44.93   -19 54 01.8         305543    304  C~0Z8y      
2011 10  02.19013  00 14 44.06   -19 54 05.1         305543    304  C~0Z8y      
2011 10  02.36498  00 14 43.15   -19 54 08.6         305543    304  C~0Z8y      
2011 10  22.01459  00 13 03.95   -19 58 17.2   20.8R 305543    304  C~0ZU7      
2011 10  22.15245  00 13 03.29   -19 58 17.9         305543    304  C~0ZU7      
2011 10  22.28623  00 13 02.66   -19 58 18.5         305543    304  C~0ZU7      
2011 10  23.02703  00 12 59.21   -19 58 21.9         305543    304  C~0ZU7      
2011 10  23.17317  00 12 58.55   -19 58 22.5         305543    304  C~0ZU7      
2011 10  23.27772  00 12 58.01   -19 58 23.3         305543    304  C~0ZU7      
2012 10  10.35819  00 19 55.725  -18 41 47.86  21.2w 305543    F51  C~1vx8      
2012 10  10.37210  00 19 55.654  -18 41 48.14  21.2w 305543    F51  C~1vx8      
2012 10  10.38603  00 19 55.574  -18 41 48.39  21.2w 305543    F51  C~1vx8      
2012 10  10.39994  00 19 55.507  -18 41 48.59  21.1w 305543    F51  C~1vx8      
2013 08  29.46940  00 29 22.180  -17 06 25.09  21.1r 305543    F51  C~1vx8      
2013 08  29.48043  00 29 22.133  -17 06 25.53  21.2r 305543    F51  C~1vx8      
2013 08  29.49231  00 29 22.082  -17 06 25.93  20.9i 305543    F51  C~1vx8      
2013 08  29.50439  00 29 22.033  -17 06 26.43  21.0i 305543    F51  C~1vx8      
2014 08  22.52795  00 35 41.125  -15 44 46.89  21.2w 305543    F51  C~1vx8      
2014 08  22.53910  00 35 41.080  -15 44 47.28  21.2w 305543    F51  C~1vx8      
2014 08  22.55029  00 35 41.038  -15 44 47.66  21.2w 305543    F51  C~1vx8      
2014 08  22.56150  00 35 40.991  -15 44 48.15  21.1w 305543    F51  C~1vx8      
2014 09  02.45250  00 34 56.251  -15 51 08.05  21.1w 305543    F51  C~1vx8      
2014 09  02.46308  00 34 56.203  -15 51 08.38  21.2w 305543    F51  C~1vx8      
2014 09  02.47368  00 34 56.157  -15 51 08.76  21.1w 305543    F51  C~1vx9      
2014 09  02.48426  00 34 56.109  -15 51 09.13  21.0w 305543    F51  C~1vx9      
2014 09  14.45116  00 33 59.681  -15 57 42.24  20.7i 305543    F51  C~1vx9      
2014 09  14.46281  00 33 59.620  -15 57 42.56  21.0i 305543    F51  C~1vx9      
2014 09  14.47443  00 33 59.556  -15 57 42.90  20.8i 305543    F51  C~1vx9      
2014 09  14.48607  00 33 59.499  -15 57 43.36  20.8i 305543    F51  C~1vx9      
2014 09  22.46803  00 33 18.974  -16 01 39.88  21.1w 305543    F51  C~1vx9      
2014 09  22.48083  00 33 18.905  -16 01 40.22  21.1w 305543    F51  C~1vx9      
2014 09  22.49365  00 33 18.840  -16 01 40.67  21.0w 305543    F51  C~1vx9      
2014 09  22.50649  00 33 18.775  -16 01 41.01  21.1w 305543    F51  C~1vx9      
2015 07  19.56834  00 42 43.119  -14 08 35.18  21.2w 305543    F51  C~1vx9      
2015 07  19.57965  00 42 43.112  -14 08 35.49  21.1w 305543    F51  C~1vx9      
2015 07  19.59088  00 42 43.102  -14 08 35.80  21.3w 305543    F51  C~1vx9      
2015 07  19.60209  00 42 43.089  -14 08 36.11  21.2w 305543    F51  C~1vx9      

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    -0.03       0.00    -1.08
  2   0.0001      0.00     0.08       0.00    -0.71
  3   0.0027      0.00    -0.46       0.00    -0.58
  4   0.0027      0.00    -1.13       0.00    -0.19
  5   0.0845      0.00     0.17       0.00     0.38
  6   0.0848      0.00    -0.37       0.00     0.24
  7   0.0873      0.00     0.00       0.00    -0.05
  8   0.0876      0.00    -0.06       0.00    -0.05
  9   0.1524      0.00     0.86       0.00    -0.01
 10   0.1527      0.00     0.61       0.00     0.08
 11   0.2646      0.00     0.25       0.00     0.26
 12   0.2650      0.00     0.14       0.00     0.06
 13   0.9172      0.00     0.09       0.00     0.35
 14   0.9254      0.00    -0.10       0.00     0.43
 15   0.9256      0.00     0.22       0.00     0.10
 16   0.9281      0.00     0.15       0.00     0.09
 17   0.9284      0.00     0.16       0.00     0.33
 18   1.1304      0.00    -0.05       0.00     0.02
 19   1.1305      0.00     0.10       0.00     0.27
 20   1.9652      0.00     0.25       0.00     0.13
 21   1.9655      0.00     0.14       0.00     0.12
 22   1.9655      0.00     0.29       0.00     0.02
 23   3.0983      0.00    -0.00       0.00    -0.05
 24   3.0987      0.00    -0.00       0.00    -0.04
 25   3.0991      0.00    -0.14       0.00     0.03
 26   3.1010      0.00    -0.02       0.00    -0.01
 27   3.1015      0.00    -0.04       0.00    -0.04
 28   3.1019      0.00     0.32       0.00    -0.11
 29   3.1557      0.00    -0.10       0.00     0.09
 30   3.1561      0.00    -0.09       0.00     0.09
 31   3.1565      0.00     0.03       0.00     0.10
 32   3.1585      0.00    -0.06       0.00     0.06
 33   3.1589      0.00     0.44       0.00     0.07
 34   3.1592      0.00    -0.26       0.00    -0.33
 35   4.1259      0.00     0.03       0.00     0.15
 36   4.1259      0.00     0.06       0.00     0.08
 37   4.1260      0.00    -0.05       0.00     0.04
 38   4.1260      0.00     0.04       0.00     0.05
 39   5.0105      0.00     0.04       0.00    -0.05
 40   5.0105      0.00     0.07       0.00    -0.10
 41   5.0106      0.00     0.09       0.00    -0.09
 42   5.0106      0.00     0.15       0.00    -0.16
 43   5.9908      0.00     0.13       0.00     0.18
 44   5.9909      0.00     0.10       0.00     0.19
 45   5.9909      0.00     0.12       0.00     0.20
 46   5.9909      0.00     0.06       0.00     0.10
 47   6.0207      0.00     0.03       0.00     0.10
 48   6.0208      0.00     0.03       0.00     0.13
 49   6.0208      0.00     0.06       0.00     0.12
 50   6.0208      0.00     0.06       0.00     0.11
 51   6.0536      0.00     0.06       0.00    -0.01
 52   6.0536      0.00     0.02       0.00     0.04
 53   6.0536      0.00    -0.05       0.00     0.06
 54   6.0537      0.00    -0.03       0.00    -0.04
 55   6.0755      0.00    -0.01       0.00    -0.17
 56   6.0756      0.00    -0.04       0.00    -0.15
 57   6.0756      0.00     0.00       0.00    -0.24
 58   6.0756      0.00     0.04       0.00    -0.23
 59   6.8972      0.00     0.12       0.00     0.08
 60   6.8972      0.00     0.14       0.00     0.07
 61   6.8972      0.00     0.11       0.00     0.05
 62   6.8973      0.00     0.03       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.

305543    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        62.628    62.628    62.629
ecceobj         0.412     0.412     0.413
incobj         25.126    25.126    25.126
qmin           35.281    35.269    35.271
qmax           90.041    90.057    89.911
amean          61.992    61.991    61.986
amin           61.265    61.255    61.263
amax           62.960    62.958    62.996
emean           0.412     0.412     0.412
emin            0.394     0.395     0.395
emax            0.431     0.430     0.430
imean          24.002    24.007    24.009
imin           23.318    23.318    23.323
imax           24.825    24.815    24.808
excite_mean     0.579     0.579     0.579
fracstop        1.000     1.000     1.000
cjmean          2.874     2.874     2.874

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       160.0     160.0     160.1
kozaiamp        180.0     180.0     180.0