Orbit Fit and Astrometric record for 315530

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: 315530    
# Created Fri Oct 20 01:36:43 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   76 observations of   76
# Arc:  26.49y
# First observation: 1989/10/09
#  Last observation: 2016/04/05
# Chi-squared of fit:   260.33 DOF:  146 RMS:  0.33
# Min/Max residuals:    -1.32    1.67
# Exact a, adot, b, bdot, g, gdot:
  1.836047E-05  3.077167E-02  2.140196E-06  4.261008E-03  2.791698E-02  1.824530E-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
   26.348582   87.563278    0.944861    0.142258   -0.287225  2447808.946480
# Heliocentric elements and errors
Epoch:              2447808.5000  =  1989/10/09
Mean Anomaly:           10.94843 +/-     0.000
Argument of Peri:       58.26251 +/-     0.000
Long of Asc Node:       14.86472 +/-     0.000
Inclination:            27.39972 +/-     0.000
Eccentricity:         0.14454857 +/-    0.0000
Semi-Major Axis:     42.04745963 +/-    0.0000
Time of Perihelion: 2444779.7919 +/-       0.0
Perihelion:          35.96955944 +/-    0.0000
Aphelion:            48.12535982 +/-    0.0000
Period (y)              272.6577 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X            2.32283849 +/-    0.0000
Ecliptic Y           32.34988539 +/-    0.0000
Ecliptic Z           15.89834038 +/-    0.0000
Ecliptic XDOT        -0.00302165 +/-    0.0000
Ecliptic YDOT         0.00010413 +/-    0.0000
Ecliptic ZDOT         0.00045397 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.12016637 +/-    0.0000
Geocenter to KBO     35.82048541 +/-    0.0000
# Hcoef:  5.08

The following table shows the complete astrometric record for 315530. 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 (315530) followed by the observatory code and reference code for the source of the astrometry.

1989 10  09.44583  05 46 28.54   +49 45 33.4         315530    261   ~0AbP      
1992 11  25.40347  06 16 06.14   +50 50 30.9         315530    261   ~0AbP      
1993 12  10.32917  06 25 30.05   +51 01 16.5         315530    261   ~0AbP      
2008 01  11.52181  08 47 17.030  +46 10 01.45  20.5R 315530    675  C~0AbP      
2008 01  11.55207  08 47 16.811  +46 10 02.57  20.7R 315530    675  C~0AbP      
2008 01  14.25824  08 46 57.101  +46 11 21.39  20.3R 315530    675  C~0AbP      
2008 01  14.30254  08 46 56.730  +46 11 23.03  21.1R 315530    675  C~0AbP      
2008 01  31.21143  08 44 48.08   +46 17 29.1         315530    675  C~0AbP      
2008 01  31.26632  08 44 47.62   +46 17 29.8         315530    675  C~0AbP      
2008 01  31.40246  08 44 46.58   +46 17 31.7         315530    675  C~0AbP      
2008 02  13.10462  08 43 10.08   +46 19 26.2         315530    675  C~0AbP      
2008 02  13.18193  08 43 09.51   +46 19 26.5         315530    675  C~0AbP      
2008 02  13.23671  08 43 09.10   +46 19 26.5         315530    675  C~0AbP      
2008 02  27.13798  08 41 32.07   +46 18 40.6         315530    688  C~0AbP      
2008 02  27.22412  08 41 31.51   +46 18 39.6         315530    688  C~0AbP      
2008 04  29.19531  08 38 38.81   +45 44 40.4         315530    675  C~0AbP      
2008 04  29.30146  08 38 38.96   +45 44 35.5         315530    675  C~0AbP      
2008 05  20.23824  08 39 43.18   +45 26 27.3         315530    675  C~0AbP      
2008 10  09.44708  08 58 24.19   +44 27 29.8         315530    675  C~0AbP      
2008 10  09.50043  08 58 24.47   +44 27 31.3         315530    675  C~0AbP      
2008 10  12.43895  08 58 38.15   +44 28 39.0         315530    675  C~0AbP      
2008 10  12.49314  08 58 38.42   +44 28 40.2         315530    675  C~0AbP      
2009 01  28.31585  08 53 49.34   +45 33 54.3         315530    675  C~0AbP      
2009 01  28.37069  08 53 48.94   +45 33 55.5         315530    675  C~0AbP      
2011 01  10.47026  09 12 37.46   +43 52 24.4   19.7R 315530    695  C~0U4X      
2011 01  10.51870  09 12 37.15   +43 52 26.2         315530    695  C~0U4X      
2011 01  10.55611  09 12 36.92   +43 52 27.4         315530    695  C~0U4X      
2012 01  30.361701 09 18 18.054  +43 12 45.67  20.6R 315530    695  C~0d4m      
2012 01  30.364236 09 18 18.030  +43 12 45.33  20.7R 315530    695  C~0d4m      
2012 01  30.391366 09 18 17.824  +43 12 46.26  20.1R 315530    695  C~0d4m      
2012 01  30.393900 09 18 17.808  +43 12 46.25  19.8R 315530    695  C~0d4m      
2012 01  31.278414 09 18 11.531  +43 13 06.90  19.9R 315530    695  C~0d4m      
2012 01  31.280937 09 18 11.508  +43 13 06.79  20.1R 315530    695  C~0d4m      
2012 01  31.296146 09 18 11.425  +43 13 07.32  20.0R 315530    695  C~0d4m      
2012 01  31.325382 09 18 11.187  +43 13 07.81  20.1R 315530    695  C~0d4m      
2012 02  15.40919  09 16 22.900  +43 17 26.09  20.8g 315530    F51  C~1vxL      
2012 02  15.42225  09 16 22.834  +43 17 26.15  20.7g 315530    F51  C~1vxL      
2012 02  15.43627  09 16 22.720  +43 17 26.25  20.6r 315530    F51  C~1vxL      
2012 02  15.44870  09 16 22.630  +43 17 26.41  20.7r 315530    F51  C~1vxL      
2013 02  15.36050  09 24 02.452  +42 27 15.93  20.4r 315530    F51  C~1vxL      
2013 02  15.37234  09 24 02.376  +42 27 16.06  20.4r 315530    F51  C~1vxL      
2013 02  15.38485  09 24 02.279  +42 27 16.15  20.8g 315530    F51  C~1vxL      
2013 02  15.39707  09 24 02.195  +42 27 16.43  21.1g 315530    F51  C~1vxL      
2014 01  20.52923  09 34 30.340  +41 24 49.03  20.8r 315530    F51  C~10Sc      
2014 01  20.54099  09 34 30.220  +41 24 49.69  20.8r 315530    F51  C~10Sc      
2014 12  26.57590  09 43 54.181  +40 14 27.53  20.7w 315530    F51  C~1vxL      
2014 12  26.58875  09 43 54.121  +40 14 28.13  20.6w 315530    F51  C~1vxL      
2014 12  26.60164  09 43 54.071  +40 14 28.64  20.6w 315530    F51  C~1vxL      
2014 12  26.61452  09 43 54.009  +40 14 29.15  20.9w 315530    F51  C~1vxL      
2015 01  11.56115  09 42 36.538  +40 25 16.57  20.3i 315530    F51  C~1vxL      
2015 01  11.57311  09 42 36.475  +40 25 16.95  20.3i 315530    F51  C~1vxL      
2015 01  11.58499  09 42 36.402  +40 25 17.44  20.3i 315530    F51  C~1vxL      
2015 01  11.59689  09 42 36.335  +40 25 17.87  20.3i 315530    F51  C~1vxL      
2015 01  13.56247  09 42 25.239  +40 26 32.45  20.3i 315530    F51  C~1vxL      
2015 01  13.57439  09 42 25.171  +40 26 32.91  20.3i 315530    F51  C~1vxL      
2015 01  13.58625  09 42 25.096  +40 26 33.40  20.3i 315530    F51  C~1vxL      
2015 01  13.59810  09 42 25.031  +40 26 33.81  20.3i 315530    F51  C~1vxL      
2015 03  20.29725  09 35 27.289  +40 43 20.63  20.6w 315530    F51  C~1vxL      
2015 03  20.30935  09 35 27.225  +40 43 20.51  20.6w 315530    F51  C~1vxL      
2015 03  20.32151  09 35 27.164  +40 43 20.34  20.6w 315530    F51  C~1vxL      
2015 03  20.33370  09 35 27.097  +40 43 20.20  20.5w 315530    F51  C~1vxL      
2015 03  22.30382  09 35 17.102  +40 42 54.73  20.6w 315530    F51  C~1vxL      
2015 03  22.31600  09 35 17.041  +40 42 54.63  20.6w 315530    F51  C@0618      
2015 03  22.32820  09 35 16.974  +40 42 54.40  20.6w 315530    F51  C@0618      
2015 03  22.34040  09 35 16.914  +40 42 54.29  20.6w 315530    F51  C@0618      
2015 05  02.25824  09 33 24.883  +40 22 39.60  20.6i 315530    F51  C~1vxL      
2015 05  02.26917  09 33 24.830  +40 22 39.07  20.1i 315530    F51  C~1vxL      
2015 05  02.28013  09 33 24.829  +40 22 39.14  20.4i 315530    F51  C~1vxL      
2015 05  02.29108  09 33 24.838  +40 22 38.60  20.6i 315530    F51  C~1vxL      
2015 05  03.25492  09 33 24.678  +40 21 56.42  20.3i 315530    F51  C~1vxL      
2015 05  03.26580  09 33 24.663  +40 21 56.05  20.4i 315530    F51  C~1vxL      
2015 05  03.27665  09 33 24.676  +40 21 55.55  20.6i 315530    F51  C~1vxL      
2015 05  03.28752  09 33 24.671  +40 21 54.98  20.4i 315530    F51  C~1vxL      
2016 04  05.124110 09 41 15.47   +39 45 15.5   21.2V 315530    H21  C~1qgc      
2016 04  05.141586 09 41 15.45   +39 45 15.0   21.0V 315530    H21  C~1qgc      
2016 04  05.153180 09 41 15.38   +39 45 14.9   21.2V 315530    H21  C~1qgc      

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    -0.16       0.00    -1.00
  2   3.1292      0.00     0.19       0.00    -0.03
  3   4.1694      0.00     0.29       0.00     0.01
  4  18.2562      0.00    -0.12       0.00    -0.05
  5  18.2563      0.00    -0.09       0.00     0.19
  6  18.2637      0.00    -0.09       0.00     0.22
  7  18.2638      0.00    -0.69       0.00     0.59
  8  18.3101      0.00    -0.10       0.00     0.22
  9  18.3103      0.00    -0.56       0.00     0.09
 10  18.3106      0.00    -0.16       0.00    -0.01
 11  18.3454      0.00     0.05       0.00     0.22
 12  18.3456      0.00     0.16       0.00     0.21
 13  18.3458      0.00     0.17       0.00     0.02
 14  18.3838      0.00     1.53       0.00    -1.12
 15  18.3841      0.00     1.67       0.00    -1.32
 16  18.5537      0.00    -0.03       0.00    -0.40
 17  18.5540      0.00    -0.20       0.00     0.06
 18  18.6113      0.00    -0.48       0.00     0.13
 19  19.0007      0.00     0.24       0.00     0.15
 20  19.0008      0.00     0.59       0.00     0.42
 21  19.0089      0.00    -0.50       0.00    -0.19
 22  19.0090      0.00    -0.05       0.00    -0.34
 23  19.3042      0.00     0.02       0.00    -0.06
 24  19.3044      0.00     0.36       0.00     0.10
 25  21.2540      0.00     0.07       0.00     0.04
 26  21.2541      0.00     0.18       0.00     0.16
 27  21.2542      0.00     0.39       0.00     0.08
 28  22.3078      0.00    -0.34       0.00     0.30
 29  22.3078      0.00    -0.42       0.00    -0.10
 30  22.3079      0.00    -0.56       0.00     0.19
 31  22.3079      0.00    -0.52       0.00     0.12
 32  22.3103      0.00    -0.05       0.00    -0.04
 33  22.3103      0.00    -0.12       0.00    -0.21
 34  22.3103      0.00     0.29       0.00    -0.03
 35  22.3104      0.00    -0.09       0.00    -0.22
 36  22.3517      0.00    -0.08       0.00     0.07
 37  22.3517      0.00     0.34       0.00    -0.01
 38  22.3518      0.00     0.15       0.00    -0.06
 39  22.3518      0.00     0.15       0.00    -0.03
 40  23.3536      0.00     0.03       0.00     0.18
 41  23.3537      0.00     0.15       0.00     0.16
 42  23.3537      0.00     0.03       0.00     0.09
 43  23.3537      0.00     0.08       0.00     0.22
 44  24.2822      0.00     0.58       0.00    -0.12
 45  24.2823      0.00    -0.07       0.00     0.16
 46  25.2132      0.00     0.17       0.00    -0.10
 47  25.2133      0.00     0.08       0.00    -0.04
 48  25.2133      0.00     0.14       0.00    -0.08
 49  25.2133      0.00     0.02       0.00    -0.11
 50  25.2570      0.00     0.06       0.00     0.04
 51  25.2570      0.00     0.13       0.00    -0.04
 52  25.2571      0.00     0.05       0.00    -0.00
 53  25.2571      0.00     0.06       0.00    -0.02
 54  25.2625      0.00     0.14       0.00     0.02
 55  25.2625      0.00     0.16       0.00     0.04
 56  25.2625      0.00     0.07       0.00     0.09
 57  25.2626      0.00     0.14       0.00     0.06
 58  25.4424      0.00     0.24       0.00    -0.01
 59  25.4425      0.00     0.24       0.00     0.01
 60  25.4425      0.00     0.29       0.00    -0.01
 61  25.4425      0.00     0.25       0.00    -0.01
 62  25.4479      0.00     0.22       0.00    -0.05
 63  25.4480      0.00     0.23       0.00     0.02
 64  25.4480      0.00     0.16       0.00    -0.04
 65  25.4480      0.00     0.20       0.00     0.01
 66  25.5601      0.00     0.39       0.00    -0.27
 67  25.5601      0.00    -0.34       0.00    -0.32
 68  25.5601      0.00    -0.30       0.00     0.22
 69  25.5602      0.00    -0.11       0.00     0.16
 70  25.5628      0.00    -0.11       0.00    -0.13
 71  25.5628      0.00    -0.30       0.00    -0.02
 72  25.5628      0.00    -0.07       0.00    -0.05
 73  25.5629      0.00    -0.11       0.00    -0.14
 74  26.4878      0.00    -0.36       0.00     0.08
 75  26.4879      0.00     0.32       0.00    -0.00
 76  26.4879      0.00    -0.09       0.00     0.17

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.

315530    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        41.981    41.981    41.981
ecceobj         0.144     0.144     0.144
incobj         27.405    27.405    27.405
qmin           35.314    35.336    35.348
qmax           48.692    48.659    48.662
amean          41.846    41.843    41.844
amin           41.509    41.506    41.522
amax           42.232    42.232    42.232
emean           0.137     0.137     0.137
emin            0.120     0.120     0.120
emax            0.154     0.154     0.153
imean          27.319    27.318    27.318
imin           26.844    26.837    26.839
imax           27.741    27.761    27.758
excite_mean     0.479     0.479     0.479
fracstop        1.000     1.000     1.000
cjmean          2.794     2.794     2.794

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       172.6     172.5     172.7
kozaiamp        180.0     180.0     179.9