Orbit Fit and Astrometric record for 11US410

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: 11US410   
# Created Mon Oct 23 01:37:58 2017
# Orbit generated from Bernstein formalism
# Fitting   27 observations of   27
# Arc:   2.10y
# First observation: 2011/08/29
#  Last observation: 2013/10/05
Preliminary a, adot, b, bdot, g, gdot:
  -0.000380   0.030510   0.000010   0.006297   0.028408   0.000000
# Chi-squared of fit:     5.63 DOF:   48 RMS:  0.08
# Min/Max residuals:    -0.15    0.20
# Exact a, adot, b, bdot, g, gdot:
  1.641867E-05  3.061059E-02  4.091896E-06  6.368555E-03  2.893062E-02  8.222538E-03
# Covariance matrix:
  2.8508E-13 -7.0123E-14 -3.9727E-15  1.5449E-14  1.7888E-13  1.1539E-12
 -7.0123E-14  5.3536E-13 -3.0953E-14  1.2229E-13  2.1312E-13  8.9982E-12
 -3.9727E-15 -3.0953E-14  1.2913E-13 -9.2196E-14 -1.8360E-14 -6.5190E-13
  1.5449E-14  1.2229E-13 -9.2196E-14  1.3164E-13  7.2268E-14  2.5742E-12
  1.7888E-13  2.1312E-13 -1.8360E-14  7.2268E-14  2.9203E-13  5.3364E-12
  1.1539E-12  8.9982E-12 -6.5190E-13  2.5742E-12  5.3364E-12  1.8951E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.868794   30.701961    0.826480    0.018727   -0.574922  2455803.007416
# Heliocentric elements and errors
Epoch:              2455800.5000  =  2011/08/27
Mean Anomaly:           49.97762 +/-     0.024
Argument of Peri:      291.66248 +/-     0.020
Long of Asc Node:       20.55916 +/-     0.001
Inclination:            11.85330 +/-     0.001
Eccentricity:         0.25758941 +/-    0.0005
Semi-Major Axis:     39.78091236 +/-    0.0108
Time of Perihelion: 2443077.6727 +/-       3.3
Perihelion:          29.53377042 +/-    0.0197
Aphelion:            50.02805430 +/-    0.0225
Period (y)              250.9114 +/-      0.10
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           30.62475953 +/-    0.0006
Ecliptic Y           17.22302515 +/-    0.0003
Ecliptic Z            1.12737327 +/-    0.0000
Ecliptic XDOT        -0.00083038 +/-    0.0000
Ecliptic YDOT         0.00288325 +/-    0.0000
Ecliptic ZDOT         0.00062780 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.15365503 +/-    0.0005
Geocenter to KBO     34.56545480 +/-    0.0006
# Hcoef:  8.64

The following table shows the complete astrometric record for 11US410. 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 (11US410) followed by the observatory code and reference code for the source of the astrometry.

2011 08  29.50665  01 51 38.537  +13 28 05.56  24.2r 11US410   568  C~1C6L      
2011 08  29.55038  01 51 38.401  +13 28 05.24  24.1r 11US410   568  C~1C6L      
2011 10  24.41621  01 47 15.923  +13 09 00.97  23.5r 11US410   568  C~1C6L      
2011 10  24.45893  01 47 15.683  +13 08 59.64  23.8r 11US410   568  C~1C6L      
2011 10  24.50160  01 47 15.441  +13 08 58.47  23.8r 11US410   568  C~1C6L      
2011 10  28.49290  01 46 53.017  +13 07 08.49  24.1r 11US410   568  C~1C6L      
2011 10  30.53764  01 46 41.572  +13 06 11.96  24.0r 11US410   568  C~1C6L      
2011 10  31.52047  01 46 36.112  +13 05 44.91  23.9r 11US410   568  C~1C6L      
2011 11  24.24514  01 44 34.598  +12 55 26.93  24.0r 11US410   568  C~1C6L      
2011 11  26.46510  01 44 24.731  +12 54 35.73  23.8r 11US410   568  C~1C6L      
2012 01  25.25212  01 42 54.121  +12 46 38.58  24.0r 11US410   568  C~1C6L      
2012 01  26.23689  01 42 55.876  +12 46 48.49        11US410   568  C~1C6L      
2012 01  27.29405  01 42 57.893  +12 46 59.78  24.3r 11US410   568  C~1C6L      
2012 02  15.24353  01 43 54.106  +12 52 18.76        11US410   568  C~1C6L      
2012 08  17.58997  01 58 15.531  +14 25 42.69  24.0r 11US410   568  C~1C6L      
2012 08  17.59867  01 58 15.527  +14 25 42.61  24.3r 11US410   568  C~1C6M      
2012 08  24.54776  01 58 01.969  +14 25 21.64  24.0r 11US410   568  C~1C6M      
2012 10  17.42115  01 54 08.584  +14 09 47.95  23.8r 11US410   568  C~1C6M      
2012 10  20.48606  01 53 51.372  +14 08 27.31  23.8r 11US410   568  C~1C6M      
2013 01  14.35439  01 48 49.773  +13 42 34.36  23.8r 11US410   568  C~1C6M      
2013 02  03.27083  01 49 20.020  +13 45 07.59  24.4r 11US410   568  C~1C6M      
2013 09  01.60573  02 03 51.67   +15 19 51.5         11US410   568  C~1C6M      
2013 09  01.61574  02 03 51.64   +15 19 51.4         11US410   568  C~1C6M      
2013 09  01.62061  02 03 51.62   +15 19 51.4         11US410   568  C~1C6M      
2013 10  05.48057  02 01 29.39   +15 11 05.7         11US410   568  C~1C6M      
2013 10  05.52644  02 01 29.14   +15 11 04.7         11US410   568  C~1C6M      
2013 10  05.56627  02 01 28.92   +15 11 03.8         11US410   568  C~1C6M      

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     0.06       0.00    -0.13
  2   0.0001     -1.97    -0.01       0.40    -0.03
  3   0.1531  -3990.93     0.03     285.56     0.10
  4   0.1532  -3994.68     0.05     285.57    -0.07
  5   0.1533  -3998.40     0.09     285.73    -0.07
  6   0.1642  -4343.80     0.20     299.57    -0.06
  7   0.1698  -4520.25    -0.12     306.32    -0.02
  8   0.1725  -4604.46    -0.07     309.48     0.01
  9   0.2375  -6485.33    -0.03     366.99    -0.06
 10   0.2436  -6638.51     0.05     370.89     0.01
 11   0.4072  -8048.40     0.02     401.50     0.13
 12   0.4099  -8020.84    -0.12     401.51     0.15
 13   0.4128  -7989.20    -0.01     401.43     0.06
 14   0.4647  -7106.16    -0.10     403.67    -0.02
 15   0.9694   6624.05    -0.15    1226.95     0.15
 16   0.9695   6623.97    -0.03    1226.90     0.03
 17   0.9885   6431.69     0.05    1275.23     0.03
 18   1.1360   2924.24    -0.06    1577.78    -0.02
 19   1.1444   2661.44     0.05    1589.68    -0.02
 20   1.3795  -1995.54     0.03    1681.63     0.03
 21   1.4340  -1529.05     0.01    1668.83    -0.06
 22   2.0099  12327.54    -0.04    2614.73    -0.11
 23   2.0099  12327.09    -0.05    2614.78    -0.13
 24   2.0099  12326.82    -0.11    2614.88    -0.07
 25   2.1026  10206.13     0.16    2820.98     0.02
 26   2.1027  10202.37     0.10    2821.28     0.07
 27   2.1028  10199.07    -0.01    2821.52     0.10

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.

11US410    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.855    39.886    39.823
ecceobj         0.259     0.260     0.258
incobj         11.847    11.847    11.847
qmin           28.347    28.565    28.350
qmax           51.101    51.060    51.169
amean          39.455    39.455    39.455
amin           38.994    38.972    39.012
amax           39.989    40.017    39.985
emean           0.242     0.238     0.244
emin            0.201     0.201     0.201
emax            0.280     0.277     0.280
imean          12.468    12.876    12.190
imin           10.530    11.094    10.154
imax           14.223    14.581    14.037
excite_mean     0.325     0.327     0.324
fracstop        1.000     1.000     1.000
cjmean          2.931     2.930     2.932

libcent 0       180.2     179.4     179.6
libamp  0        89.3     100.0      79.8
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       270.9     271.0     271.3
kozaiamp         49.8      48.1      49.3