Orbit Fit and Astrometric record for 11UR410

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: 11UR410   
# Created Mon Dec 18 02:37:42 2017
# Orbit generated from Bernstein formalism
# Fitting   21 observations of   21
# Arc:   2.27y
# First observation: 2011/08/29
#  Last observation: 2013/12/05
Preliminary a, adot, b, bdot, g, gdot:
  -0.000167   0.039446  -0.000054   0.012234   0.033087   0.000000
# Chi-squared of fit:     6.46 DOF:   36 RMS:  0.10
# Min/Max residuals:    -0.21    0.26
# Exact a, adot, b, bdot, g, gdot:
  1.835347E-05  3.896850E-02  5.880551E-06  1.205325E-02  3.299280E-02 -5.626961E-03
# Covariance matrix:
  2.2786E-13 -2.9281E-14 -2.2791E-15  7.8344E-15  1.3929E-13  2.8638E-13
 -2.9281E-14  6.7115E-13 -7.1620E-14  2.9609E-13  3.7569E-13  1.1226E-11
 -2.2791E-15 -7.1620E-14  1.6336E-13 -1.3956E-13 -3.9019E-14 -1.5568E-12
  7.8344E-15  2.9609E-13 -1.3956E-13  2.8499E-13  1.5908E-13  6.4630E-12
  1.3929E-13  3.7569E-13 -3.9019E-14  1.5908E-13  3.8385E-13  6.0165E-12
  2.8638E-13  1.1226E-11 -1.5568E-12  6.4630E-12  6.0165E-12  2.4523E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.137386   32.194052    0.840833    0.010969   -0.553901  2455803.042626
# Heliocentric elements and errors
Epoch:              2455800.5000  =  2011/08/27
Mean Anomaly:          333.65429 +/-     0.034
Argument of Peri:       49.54625 +/-     0.072
Long of Asc Node:       27.04110 +/-     0.000
Inclination:            17.28946 +/-     0.000
Eccentricity:         0.27301975 +/-    0.0003
Semi-Major Axis:     39.71797568 +/-    0.0073
Time of Perihelion: 2462491.4291 +/-       8.4
Perihelion:          28.87418371 +/-    0.0134
Aphelion:            50.56176766 +/-    0.0154
Period (y)              250.3161 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           26.56465144 +/-    0.0005
Ecliptic Y           15.73023129 +/-    0.0003
Ecliptic Z            0.60183969 +/-    0.0000
Ecliptic XDOT        -0.00213792 +/-    0.0000
Ecliptic YDOT         0.00248263 +/-    0.0000
Ecliptic ZDOT         0.00099081 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   30.87852155 +/-    0.0004
Geocenter to KBO     30.30963956 +/-    0.0006
# Hcoef:  9.68

The following table shows the complete astrometric record for 11UR410. 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 (11UR410) followed by the observatory code and reference code for the source of the astrometry.

2011 08  29.54186  01 58 26.339  +13 18 10.90  24.1r 11UR410   568  C~1C6L      
2011 08  29.58893  01 58 26.184  +13 18 10.67  24.2r 11UR410   568  C~1C6L      
2011 09  05.52844  01 58 02.876  +13 17 09.11  24.4r 11UR410   568  C~1C6L      
2011 10  24.40763  01 53 35.761  +12 59 50.59  24.2r 11UR410   568  C~1C6L      
2011 10  24.45036  01 53 35.485  +12 59 49.25  24.4r 11UR410   568  C~1C6L      
2011 10  24.49308  01 53 35.198  +12 59 48.08  24.6r 11UR410   568  C~1C6L      
2011 10  26.42741  01 53 22.842  +12 58 54.95        11UR410   568  C~1C6L      
2011 10  31.51590  01 52 50.415  +12 56 34.13  24.1r 11UR410   568  C~1C6L      
2011 11  24.27924  01 50 30.549  +12 46 18.36  24.5r 11UR410   568  C~1C6L      
2012 01  26.24693  01 48 30.556  +12 40 13.58  24.4r 11UR410   568  C~1C6L      
2012 08  23.54629  02 06 23.732  +14 43 44.48  24.1r 11UR410   568  C~1C6L      
2012 08  24.56913  02 06 21.412  +14 43 43.55        11UR410   568  C~1C6L      
2012 10  21.32748  02 01 38.381  +14 28 03.54  24.3r 11UR410   568  C~1C6L      
2012 10  21.35320  02 01 38.217  +14 28 02.66  24.4r 11UR410   568  C~1C6L      
2012 10  21.37928  02 01 38.038  +14 28 02.06  24.5r 11UR410   568  C~1C6L      
2013 02  02.24616  01 56 15.443  +14 06 54.65  24.6r 11UR410   568  C~1C6L      
2013 02  03.25183  01 56 18.292  +14 07 12.98  24.9r 11UR410   568  C~1C6L      
2013 02  06.29444  01 56 27.656  +14 08 11.91  25.0r 11UR410   568  C~1C6L      
2013 12  05.25512  02 05 08.17   +15 36 19.2         11UR410   568  C~1CKy      
2013 12  05.33118  02 05 07.80   +15 36 17.6         11UR410   568  C~1CKy      
2013 12  05.40680  02 05 07.43   +15 36 16.0         11UR410   568  C~1CKy      

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     0.07       0.00    -0.02
  2   0.0001     -2.20    -0.02       0.57     0.11
  3   0.0191   -342.73    -0.18      60.57     0.02
  4   0.1530  -4362.55     0.11     446.33    -0.01
  5   0.1531  -4366.80     0.08     446.49    -0.18
  6   0.1532  -4371.14    -0.04     446.87    -0.12
  7   0.1585  -4559.00     0.15     460.41     0.08
  8   0.1724  -5052.55    -0.12     494.88     0.13
  9   0.2375  -7185.67    -0.08     639.01    -0.03
 10   0.4099  -8959.54     0.00     919.95    -0.02
 11   0.9856   8289.13     0.04    2449.22     0.10
 12   0.9884   8257.09    -0.05    2459.72     0.26
 13   1.1466   4069.92     0.06    2973.87     0.03
 14   1.1466   4067.38     0.06    2973.86    -0.18
 15   1.1467   4064.73    -0.01    2974.19    -0.06
 16   1.4311   -774.69    -0.21    3404.26    -0.11
 17   1.4338   -729.45     0.02    3407.02     0.04
 18   1.4422   -581.22     0.16    3414.88    -0.09
 19   2.2689   8329.11     0.00    5792.13     0.00
 20   2.2691   8323.53     0.00    5792.43     0.01
 21   2.2693   8317.94    -0.04    5792.74     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.

11UR410    quality flag:3

Type:           3:2E      3:2E      3:2E
Type:          6:4II     6:4II     6:4II

axisobj        39.788    39.802    39.774
ecceobj         0.273     0.274     0.273
incobj         17.275    17.274    17.275
qmin           27.882    27.885    27.874
qmax           51.560    51.564    51.671
amean          39.455    39.454    39.455
amin           39.065    39.065    39.063
amax           39.929    39.928    39.965
emean           0.253     0.253     0.253
emin            0.211     0.211     0.209
emax            0.292     0.292     0.293
imean          17.766    17.792    17.744
imin           15.661    15.689    15.642
imax           19.468    19.492    19.452
excite_mean     0.398     0.398     0.397
fracstop        1.000     1.000     1.000
cjmean          2.871     2.871     2.872

libcent 0       179.5     179.3     179.4
libamp  0        55.1      55.4      56.0
libcent 1       179.3     179.9     180.2
libamp  1       173.8     174.2     175.4
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        92.2      92.2      92.2
kozaiamp         41.1      41.0      41.3