Orbit Fit and Astrometric record for 168703

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: 168703    
# Created Mon Dec 18 02:36:37 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   94 observations of   94
# Arc:  17.06y
# First observation: 2000/04/02
#  Last observation: 2017/04/26
# Chi-squared of fit:   255.12 DOF:  182 RMS:  0.29
# Min/Max residuals:    -0.53    1.13
# Exact a, adot, b, bdot, g, gdot:
  1.770249E-05  2.902594E-02 -2.217119E-06 -2.492379E-03  2.750139E-02 -1.081366E-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
   -0.261142 -153.312846    0.234993   -0.004688   -0.979219  2451637.033073
# Heliocentric elements and errors
Epoch:              2451636.5000  =  2000/04/02
Mean Anomaly:          325.34101 +/-     0.000
Argument of Peri:      222.56726 +/-     0.000
Long of Asc Node:       23.37599 +/-     0.000
Inclination:             4.92921 +/-     0.000
Eccentricity:         0.07053260 +/-    0.0000
Semi-Major Axis:     39.55994526 +/-    0.0000
Time of Perihelion: 2460386.2444 +/-       0.0
Perihelion:          36.76967946 +/-    0.0000
Aphelion:            42.35021106 +/-    0.0000
Period (y)              248.8237 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -33.46147451 +/-    0.0000
Ecliptic Y          -16.55755389 +/-    0.0000
Ecliptic Z           -0.16578131 +/-    0.0000
Ecliptic XDOT         0.00138882 +/-    0.0000
Ecliptic YDOT        -0.00252623 +/-    0.0000
Ecliptic ZDOT        -0.00024751 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.33433107 +/-    0.0000
Geocenter to KBO     36.36185065 +/-    0.0000
# Hcoef:  6.01

The following table shows the complete astrometric record for 168703. 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 (168703) followed by the observatory code and reference code for the source of the astrometry.

2000 04  02.53233  13 38 39.03   -10 32 04.5   22.1R 168703    568  Cb7016      
2000 04  02.56170  13 38 38.88   -10 32 03.7   22.2R 168703    568  Cb7016      
2000 04  04.54941  13 38 28.93   -10 31 10.2   22.1R 168703    568  Cb7016      
2000 04  04.59319  13 38 28.71   -10 31 09.1   22.2R 168703    568  Cb7016      
2000 05  06.46338  13 35 47.81   -10 16 32.7   21.6R 168703    568  Cb7016      
2000 05  06.50978  13 35 47.59   -10 16 31.6   21.5R 168703    568  Cb7016      
2000 06  01.38243  13 34 01.99   -10 06 54.5   22.0R 168703    568  Cb7016      
2000 06  01.43506  13 34 01.83   -10 06 53.5   22.0R 168703    568  Cb7016      
2001 02  17.18222  13 47 31.79   -11 29 57.9   21.7R 168703    950  Cc6646      
2001 02  17.22012  13 47 31.71   -11 29 57.6   21.4R 168703    950  Cc6646      
2001 02  19.21293  13 47 27.51   -11 29 38.4   21.4R 168703    950  Cc6646      
2001 05  25.23434  13 40 31.42   -10 53 08.9   21.6R 168703    675  Cd1264      
2001 05  25.27879  13 40 31.26   -10 53 08.0   21.6R 168703    675  Cd1264      
2002 05  05.28615  13 48 09.76   -11 44 54.3   22.4V 168703    291  Cf4462      
2002 05  05.31832  13 48 09.64   -11 44 52.4   22.6V 168703    291  Cf4462      
2002 05  05.33713  13 48 09.51   -11 44 53.5   22.8V 168703    291  Cf4462      
2006 05  26.232061 14 11 34.97   -14 27 09.4   21.6V 168703    645  C~1R4o      
2006 05  26.232890 14 11 34.97   -14 27 09.4   21.4V 168703    645  C~1R4o      
2006 05  26.235378 14 11 34.96   -14 27 09.3   22.2V 168703    645  C~1R4o      
2006 05  27.240398 14 11 30.52   -14 26 46.7   21.5V 168703    645  C~2Fp3      
2006 05  27.241227 14 11 30.53   -14 26 46.6   21.2V 168703    645  C~2Fp3      
2007 07  11.99266  14 15 45.60   -14 57 17.2         168703    304  Cv1967      
2007 07  12.07591  14 15 45.53   -14 57 16.9         168703    304  Cv1967      
2011 04  29.03875  14 46 28.704  -17 58 23.91  21.5R 168703    809  C~0Viz      
2011 04  29.12334  14 46 28.249  -17 58 22.29  21.6R 168703    809  C~0Viz      
2011 04  29.21949  14 46 27.715  -17 58 19.88  21.3R 168703    809  C~0Viz      
2011 05  02.04507  14 46 12.327  -17 57 16.70  21.4R 168703    809  C~0Viz      
2011 05  02.12883  14 46 11.858  -17 57 14.68  21.3R 168703    809  C~0Viz      
2011 05  02.34751  14 46 10.664  -17 57 09.25  21.7R 168703    809  C~0Viz      
2012 01  31.63273  14 56 54.481  -18 46 32.97  21.7w 168703    F51  C~1vrf      
2012 01  31.63804  14 56 54.492  -18 46 33.11  21.8w 168703    F51  C~1vrf      
2012 01  31.64337  14 56 54.501  -18 46 33.13  21.6w 168703    F51  C~1vrf      
2012 01  31.64868  14 56 54.505  -18 46 33.18  21.7w 168703    F51  C~1vrf      
2012 05  19.40061  14 51 14.149  -18 28 17.88  21.6w 168703    F51  C~1vrf      
2012 05  19.41608  14 51 14.067  -18 28 17.55  21.6w 168703    F51  C~1vrf      
2012 05  19.43155  14 51 13.976  -18 28 17.22  21.7w 168703    F51  C~1vrf      
2012 05  20.37083  14 51 09.014  -18 27 56.19  21.5w 168703    F51  C~1vrf      
2012 05  20.37149  14 51 09.016  -18 27 56.28  21.6w 168703    F51  C~1vrf      
2012 05  20.38542  14 51 08.942  -18 27 55.88  21.7w 168703    F51  C~1vrf      
2012 05  20.38609  14 51 08.936  -18 27 55.79  21.6w 168703    F51  C~1vrf      
2012 05  20.40002  14 51 08.865  -18 27 55.50  21.6w 168703    F51  C~1vrf      
2012 05  20.40068  14 51 08.858  -18 27 55.51  21.8w 168703    F51  C~1vrf      
2012 05  20.41462  14 51 08.783  -18 27 55.20  21.5w 168703    F51  C~1vrf      
2012 05  20.41528  14 51 08.782  -18 27 55.28  21.4w 168703    F51  C~1vrf      
2013 05  05.39374  14 59 15.387  -19 10 35.12  21.3w 168703    F51  C~1vrf      
2013 05  05.40855  14 59 15.287  -19 10 34.85  21.5w 168703    F51  C~1vrf      
2013 05  05.42333  14 59 15.215  -19 10 34.62  21.3w 168703    F51  C~1vrf      
2013 05  05.43812  14 59 15.137  -19 10 34.32  21.4w 168703    F51  C~1vrf      
2013 06  01.35873  14 56 51.502  -19 00 51.93  21.5w 168703    F51  C~1vrf      
2013 06  01.37354  14 56 51.436  -19 00 51.61  21.5w 168703    F51  C~1vrf      
2013 06  01.38835  14 56 51.356  -19 00 51.31  21.5w 168703    F51  C~1vrf      
2013 06  01.40316  14 56 51.275  -19 00 50.99  21.6w 168703    F51  C~1vrf      
2014 05  08.46770  15 05 47.199  -19 45 41.98  21.2w 168703    F51  C~1vrf      
2014 05  08.46836  15 05 47.207  -19 45 42.00  21.2w 168703    F51  C~1vrf      
2014 05  08.47979  15 05 47.135  -19 45 41.76  21.4w 168703    F51  C~1vrf      
2014 05  08.48045  15 05 47.132  -19 45 41.72  21.4w 168703    F51  C~1vrf      
2014 05  08.49191  15 05 47.062  -19 45 41.49  21.2w 168703    F51  C~1vrf      
2014 05  08.49258  15 05 47.059  -19 45 41.64  21.4w 168703    F51  C~1vrf      
2014 05  08.50468  15 05 46.993  -19 45 41.17  21.4w 168703    F51  C~1vrf      
2014 05  30.37969  15 03 48.521  -19 37 59.30  21.2w 168703    F51  C~1vrf      
2014 05  30.39026  15 03 48.484  -19 37 58.94  21.2w 168703    F51  C~1vrf      
2014 05  30.40083  15 03 48.444  -19 37 58.87  21.3w 168703    F51  C~1vrf      
2014 05  30.41140  15 03 48.372  -19 37 58.32  21.5w 168703    F51  C~1vrf      
2014 06  30.27751  15 01 38.150  -19 28 39.63  21.8w 168703    F51  C~1vrf      
2014 06  30.28938  15 01 38.124  -19 28 39.15  22.1w 168703    F51  C~1vrf      
2014 06  30.30126  15 01 38.082  -19 28 39.14  21.9w 168703    F51  C~1vrf      
2014 06  30.31315  15 01 38.041  -19 28 39.03  21.8w 168703    F51  C~1vrf      
2015 02  24.63787  15 17 06.794  -20 33 21.72  21.6w 168703    F51  C~1vrf      
2015 02  24.64885  15 17 06.786  -20 33 21.83  21.6w 168703    F51  C~1vrf      
2015 02  24.65434  15 17 06.787  -20 33 21.88  21.4w 168703    F51  C~1vrf      
2015 02  25.61668  15 17 06.334  -20 33 24.97  21.5w 168703    F51  C~1vrf      
2015 02  25.62665  15 17 06.358  -20 33 25.21  21.9w 168703    F51  C~1vrf      
2015 02  25.63662  15 17 06.328  -20 33 25.06  21.7w 168703    F51  C~1vrf      
2015 02  25.64660  15 17 06.321  -20 33 25.52  21.7w 168703    F51  C~1vrf      
2015 05  24.41679  15 11 11.604  -20 15 34.26  21.6w 168703    F51  C~1vrf      
2015 05  24.42830  15 11 11.537  -20 15 34.12  21.6w 168703    F51  C~1vrf      
2015 05  24.43978  15 11 11.474  -20 15 33.82  21.6w 168703    F51  C~1vrf      
2015 05  24.45129  15 11 11.438  -20 15 33.78  21.7w 168703    F51  C~1vrf      
2015 05  25.37171  15 11 06.440  -20 15 14.58  21.4i 168703    F51  C~1vrf      
2015 05  25.38304  15 11 06.391  -20 15 14.38  21.3i 168703    F51  C~1vrf      
2015 05  25.39434  15 11 06.327  -20 15 14.25  21.4i 168703    F51  C~1vrf      
2015 06  08.39763  15 09 54.464  -20 10 32.01  21.3r 168703    F51  C~1vrf      
2015 06  08.40909  15 09 54.400  -20 10 31.92  21.4r 168703    F51  C~1vrf      
2015 06  08.42072  15 09 54.352  -20 10 31.54  21.2r 168703    F51  C~1vrf      
2015 07  18.29806  15 07 40.911  -20 00 40.67  21.9w 168703    F51  C~1vrf      
2015 07  18.30928  15 07 40.870  -20 00 40.44  21.8w 168703    F51  C~1vrf      
2015 07  18.32047  15 07 40.824  -20 00 40.31  21.7w 168703    F51  C~1vrf      
2015 07  19.27338  15 07 39.426  -20 00 32.66  21.6w 168703    F51  C~1vrf      
2015 07  19.28405  15 07 39.411  -20 00 32.49  21.5w 168703    F51  C~1vrf      
2015 07  19.29532  15 07 39.390  -20 00 32.37  21.6w 168703    F51  C~1vrf      
2015 07  19.30599  15 07 39.379  -20 00 32.20  21.7w 168703    F51  C~1vrf      
2017 04  26.48987  15 27 37.114  -21 31 48.49  21.9w 168703    F51  C~2Ex9      
2017 04  26.50108  15 27 37.002  -21 31 48.26  21.9w 168703    F51  C~2Ex9      
2017 04  26.51228  15 27 36.989  -21 31 48.34  21.8w 168703    F51  C~2Ex9      

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    -0.23       0.00     0.67
  2   0.0001      0.00    -0.10       0.00     0.21
  3   0.0055      0.00    -0.15       0.00     0.05
  4   0.0056      0.00    -0.10       0.00    -0.04
  5   0.0929      0.00    -0.02       0.00    -0.07
  6   0.0930      0.00     0.04       0.00    -0.19
  7   0.1639      0.00    -0.19       0.00    -0.49
  8   0.1640      0.00     0.04       0.00    -0.43
  9   0.8779      0.00    -0.11       0.00     0.22
 10   0.8780      0.00    -0.12       0.00     0.17
 11   0.8835      0.00    -0.15       0.00     0.12
 12   1.1436      0.00     0.64       0.00    -0.28
 13   1.1437      0.00     0.90       0.00    -0.32
 14   2.0883      0.00    -0.06       0.00     0.08
 15   2.0884      0.00     0.57       0.00     1.13
 16   2.0884      0.00     0.05       0.00    -0.47
 17   6.1457      0.00    -0.40       0.00    -0.51
 18   6.1457      0.00    -0.35       0.00    -0.53
 19   6.1457      0.00    -0.33       0.00    -0.49
 20   6.1484      0.00    -0.28       0.00    -0.27
 21   6.1484      0.00    -0.08       0.00    -0.19
 22   7.2730      0.00    -0.03       0.00     0.04
 23   7.2732      0.00    -0.01       0.00    -0.05
 24  11.0705      0.00     0.98       0.00     0.66
 25  11.0707      0.00     1.12       0.00     0.42
 26  11.0710      0.00     1.07       0.00     0.70
 27  11.0787      0.00     0.68       0.00     0.34
 28  11.0790      0.00     0.59       0.00     0.49
 29  11.0796      0.00     0.85       0.00     0.95
 30  11.8305      0.00    -0.10       0.00     0.00
 31  11.8305      0.00    -0.07       0.00    -0.07
 32  11.8306      0.00    -0.07       0.00    -0.02
 33  11.8306      0.00    -0.14       0.00    -0.01
 34  12.1283      0.00    -0.04       0.00     0.05
 35  12.1284      0.00    -0.02       0.00     0.03
 36  12.1284      0.00    -0.13       0.00     0.02
 37  12.1310      0.00    -0.09       0.00     0.05
 38  12.1310      0.00    -0.01       0.00    -0.05
 39  12.1310      0.00     0.00       0.00     0.04
 40  12.1310      0.00    -0.03       0.00     0.11
 41  12.1311      0.00     0.03       0.00     0.09
 42  12.1311      0.00    -0.03       0.00     0.07
 43  12.1311      0.00    -0.03       0.00     0.07
 44  12.1311      0.00     0.01       0.00    -0.03
 45  13.0893      0.00     0.01       0.00     0.07
 46  13.0893      0.00    -0.24       0.00     0.02
 47  13.0894      0.00    -0.07       0.00    -0.06
 48  13.0894      0.00     0.00       0.00    -0.08
 49  13.1631      0.00    -0.09       0.00     0.04
 50  13.1632      0.00     0.03       0.00     0.05
 51  13.1632      0.00    -0.05       0.00     0.04
 52  13.1632      0.00    -0.15       0.00     0.05
 53  14.0970      0.00    -0.02       0.00    -0.01
 54  14.0970      0.00     0.15       0.00    -0.05
 55  14.0970      0.00     0.04       0.00    -0.05
 56  14.0971      0.00     0.05       0.00    -0.02
 57  14.0971      0.00    -0.03       0.00    -0.03
 58  14.0971      0.00    -0.01       0.00    -0.19
 59  14.0971      0.00     0.02       0.00     0.02
 60  14.1570      0.00    -0.26       0.00    -0.29
 61  14.1570      0.00     0.02       0.00    -0.15
 62  14.1571      0.00     0.25       0.00    -0.30
 63  14.1571      0.00    -0.01       0.00     0.03
 64  14.2416      0.00     0.03       0.00    -0.17
 65  14.2416      0.00     0.20       0.00     0.15
 66  14.2417      0.00     0.14       0.00    -0.01
 67  14.2417      0.00     0.09       0.00    -0.08
 68  14.8969      0.00    -0.06       0.00    -0.22
 69  14.8970      0.00    -0.09       0.00    -0.29
 70  14.8970      0.00    -0.03       0.00    -0.32
 71  14.8996      0.00    -0.16       0.00    -0.07
 72  14.8996      0.00     0.29       0.00    -0.28
 73  14.8997      0.00    -0.07       0.00    -0.09
 74  14.8997      0.00    -0.08       0.00    -0.52
 75  15.1400      0.00    -0.01       0.00    -0.00
 76  15.1400      0.00    -0.06       0.00    -0.10
 77  15.1401      0.00    -0.05       0.00    -0.04
 78  15.1401      0.00     0.36       0.00    -0.24
 79  15.1426      0.00    -0.13       0.00    -0.02
 80  15.1426      0.00     0.07       0.00    -0.05
 81  15.1427      0.00     0.04       0.00    -0.16
 82  15.1810      0.00    -0.08       0.00    -0.08
 83  15.1810      0.00    -0.20       0.00    -0.21
 84  15.1811      0.00    -0.06       0.00    -0.06
 85  15.2903      0.00     0.29       0.00     0.07
 86  15.2903      0.00    -0.04       0.00     0.20
 87  15.2903      0.00    -0.46       0.00     0.24
 88  15.2929      0.00    -0.01       0.00    -0.10
 89  15.2930      0.00     0.02       0.00    -0.02
 90  15.2930      0.00    -0.04       0.00     0.00
 91  15.2930      0.00     0.05       0.00     0.08
 92  17.0649      0.00     0.51       0.00     0.10
 93  17.0649      0.00    -0.26       0.00     0.15
 94  17.0650      0.00     0.45       0.00    -0.11

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.

168703    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        39.552    39.552    39.553
ecceobj         0.071     0.071     0.071
incobj          4.930     4.930     4.930
qmin           35.202    35.180    35.178
qmax           44.663    44.642    44.745
amean          39.800    39.801    39.798
amin           39.435    39.434    39.417
amax           40.156    40.178    40.169
emean           0.077     0.077     0.078
emin            0.035     0.030     0.039
emax            0.113     0.112     0.114
imean          11.867    11.873    11.870
imin            4.990     4.990     4.990
imax           15.603    15.610    15.613
excite_mean     0.222     0.222     0.222
fracstop        1.000     1.000     1.000
cjmean          2.994     2.994     2.994

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       182.7     183.4     181.6
kozaiamp        180.0     180.0     180.0