Orbit Fit and Astrometric record for 11UD411

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: 11UD411   
# Created Thu Dec 14 02:37:42 2017
# Orbit generated from Bernstein formalism
# Fitting   28 observations of   28
# Arc:   2.27y
# First observation: 2011/08/30
#  Last observation: 2013/12/05
Preliminary a, adot, b, bdot, g, gdot:
  -0.000130   0.021750  -0.000013   0.005899   0.024433   0.000000
# Chi-squared of fit:     4.78 DOF:   50 RMS:  0.07
# Min/Max residuals:    -0.16    0.22
# Exact a, adot, b, bdot, g, gdot:
  1.378699E-05  2.156033E-02  3.576561E-06  5.809690E-03  2.443055E-02 -6.099161E-03
# Covariance matrix:
  1.9784E-13  4.8312E-14 -1.3068E-14  5.2180E-14  1.8588E-13  4.0123E-12
  4.8312E-14  3.2205E-13 -3.4809E-14  1.5472E-13  2.6451E-13  1.2106E-11
 -1.3068E-14 -3.4809E-14  9.8764E-14 -8.9240E-14 -3.6253E-14 -2.0381E-12
  5.2180E-14  1.5472E-13 -8.9240E-14  2.1515E-13  1.5460E-13  9.2955E-12
  1.8588E-13  2.6451E-13 -3.6253E-14  1.5460E-13  3.7135E-13  1.2018E-11
  4.0123E-12  1.2106E-11 -2.0381E-12  9.2955E-12  1.2018E-11  7.3016E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    3.896377   34.091083    0.849715    0.036652   -0.538571  2455804.016986
# Heliocentric elements and errors
Epoch:              2455800.5000  =  2011/08/27
Mean Anomaly:          275.56188 +/-     0.166
Argument of Peri:      130.88856 +/-     0.088
Long of Asc Node:       19.04683 +/-     0.001
Inclination:            15.66436 +/-     0.001
Eccentricity:         0.28649243 +/-    0.0010
Semi-Major Axis:     39.41358604 +/-    0.0229
Time of Perihelion: 2476998.9165 +/-      37.4
Perihelion:          28.12189203 +/-    0.0414
Aphelion:            50.70528004 +/-    0.0481
Period (y)              247.4441 +/-      0.22
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           34.74638336 +/-    0.0009
Ecliptic Y           22.49002693 +/-    0.0006
Ecliptic Z            2.78161272 +/-    0.0001
Ecliptic XDOT        -0.00195884 +/-    0.0000
Ecliptic YDOT         0.00159933 +/-    0.0000
Ecliptic ZDOT         0.00060318 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.48312714 +/-    0.0008
Geocenter to KBO     40.93236544 +/-    0.0010
# Hcoef:  7.12

The following table shows the complete astrometric record for 11UD411. 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 (11UD411) followed by the observatory code and reference code for the source of the astrometry.

2011 08  30.51622  02 01 51.976  +16 32 46.17  23.2r 11UD411   568  C~1C6N      
2011 08  30.56278  02 01 51.852  +16 32 45.86  23.3r 11UD411   568  C~1C6N      
2011 08  30.60922  02 01 51.735  +16 32 45.85  23.3r 11UD411   568  C~1C6N      
2011 09  05.60600  02 01 35.401  +16 32 11.07  23.1r 11UD411   568  C~1C6N      
2011 10  25.35943  01 58 01.107  +16 18 25.58  23.2r 11UD411   568  C~1C6N      
2011 10  25.41388  01 58 00.824  +16 18 24.38  22.9r 11UD411   568  C~1C6N      
2011 10  26.31804  01 57 56.293  +16 18 03.41  23.0r 11UD411   568  C~1C6N      
2011 10  26.36119  01 57 56.071  +16 18 02.39  23.1r 11UD411   568  C~1C6N      
2011 10  26.41881  01 57 55.776  +16 18 01.08  23.1r 11UD411   568  C~1C6N      
2011 10  31.40998  01 57 30.737  +16 16 03.81        11UD411   568  C~1C6N      
2011 10  31.42747  01 57 30.640  +16 16 03.34        11UD411   568  C~1C6N      
2011 10  31.45293  01 57 30.512  +16 16 02.78  23.1r 11UD411   568  C~1C6N      
2011 10  31.47823  01 57 30.383  +16 16 02.16  23.0r 11UD411   568  C~1C6N      
2011 10  31.48330  01 57 30.355  +16 16 01.95  23.0r 11UD411   568  C~1C6N      
2011 11  24.31408  01 55 38.554  +16 06 41.83  23.1r 11UD411   568  C~1C6N      
2011 12  01.32873  01 55 10.307  +16 04 09.78  23.2r 11UD411   568  C~1C6N      
2012 01  26.32223  01 53 46.811  +15 54 39.53  23.4r 11UD411   568  C~1C6N      
2012 01  27.25646  01 53 47.939  +15 54 42.86  23.0r 11UD411   568  C~1C6N      
2012 08  22.44933  02 06 32.571  +17 17 20.20  23.1r 11UD411   568  C~1C6N      
2012 08  24.56060  02 06 28.598  +17 17 20.05  23.2r 11UD411   568  C~1C6N      
2012 10  17.40387  02 03 03.307  +17 06 15.43  23.0r 11UD411   568  C~1C6N      
2012 10  20.50070  02 02 47.687  +17 05 07.76  23.2r 11UD411   568  C~1C6N      
2013 01  14.33578  01 57 57.368  +16 39 04.95  23.2r 11UD411   568  C~1C6N      
2013 02  02.26027  01 58 14.078  +16 39 28.29  23.2r 11UD411   568  C~1C6N      
2013 02  03.26131  01 58 15.940  +16 39 34.74        11UD411   568  C~1C6N      
2013 12  05.43997  02 03 42.82   +17 33 00.8         11UD411   568  C~1CKy      
2013 12  05.44921  02 03 42.79   +17 33 00.5         11UD411   568  C~1CKy      
2013 12  05.45845  02 03 42.75   +17 33 00.4         11UD411   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     0.03       0.00     0.04
  2   0.0001     -1.78    -0.06       0.32    -0.04
  3   0.0003     -3.36     0.04       0.89     0.13
  4   0.0167   -235.87     0.22      48.98     0.22
  5   0.1529  -3414.63    -0.03     341.47    -0.08
  6   0.1530  -3418.87    -0.07     341.76    -0.00
  7   0.1555  -3487.34     0.05     344.82    -0.04
  8   0.1556  -3490.70     0.03     344.97    -0.05
  9   0.1558  -3495.13     0.03     345.23    -0.03
 10   0.1695  -3874.04     0.09     360.93    -0.00
 11   0.1695  -3875.52    -0.04     360.98    -0.01
 12   0.1696  -3877.44    -0.00     361.10     0.02
 13   0.1696  -3879.40    -0.02     361.16     0.01
 14   0.1697  -3879.85    -0.08     361.11    -0.06
 15   0.2349  -5585.46     0.03     399.69     0.03
 16   0.2541  -6020.38    -0.01     400.25     0.00
 17   0.4074  -7349.44    -0.10     290.45     0.03
 18   0.4100  -7333.02    -0.06     287.82     0.01
 19   0.9800   4697.95    -0.06    1141.44    -0.16
 20   0.9857   4644.32    -0.12    1160.54    -0.02
 21   1.1332   1651.18    -0.01    1536.24     0.07
 22   1.1416   1417.58    -0.05    1549.33     0.01
 23   1.3766  -3033.49     0.08    1522.18    -0.12
 24   1.4285  -2800.19     0.02    1460.46    -0.03
 25   1.4312  -2772.86     0.04    1457.20    -0.12
 26   2.2667   2731.93     0.01    2851.78     0.11
 27   2.2668   2731.43     0.04    2851.65    -0.01
 28   2.2668   2730.85     0.01    2851.75     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.

11UD411    quality flag:3

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

axisobj        39.482    39.546    39.420
ecceobj         0.285     0.288     0.282
incobj         15.644    15.643    15.645
qmin           27.545    27.146    27.508
qmax           52.240    52.747    52.363
amean          39.455    39.455    39.456
amin           38.904    38.959    38.840
amax           40.110    40.108    40.162
emean           0.290     0.290     0.289
emin            0.277     0.268     0.273
emax            0.302     0.315     0.305
imean          15.576    15.675    15.219
imin           15.016    14.723    14.438
imax           16.142    16.567    15.931
excite_mean     0.395     0.397     0.390
fracstop        1.000     1.000     1.000
cjmean          2.873     2.872     2.878

libcent 0       179.6     179.7     180.0
libamp  0       131.3     102.8     138.8
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       186.5     183.8     177.9
kozaiamp        180.0     180.0     180.0