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 Fri Dec  3 02:11:15 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     32 observations of     32
# Arc:   9.28y
# First observation: 2011/08/30
#  Last observation: 2020/12/09
# Chi-squared of fit:    13.53 DOF:     58 RMS:  0.11
# Min/Max residuals:    -0.32    0.43
# Exact a, adot, b, bdot, g, gdot:
  1.377065E-05  2.156040E-02  3.821195E-06  5.809248E-03  2.443053E-02 -6.104131E-03
# Covariance matrix:
  1.6868E-13 -2.0252E-14  1.6356E-15 -5.4479E-15  1.1126E-13 -8.9987E-14
 -2.0252E-14  1.2600E-13 -1.9875E-14  3.7766E-14  6.6387E-14  6.6357E-13
  1.6356E-15 -1.9875E-14  6.4619E-14 -1.5646E-14 -1.1082E-14 -1.0914E-13
 -5.4479E-15  3.7766E-14 -1.5646E-14  1.7060E-14  1.8480E-14  2.0806E-13
  1.1126E-13  6.6387E-14 -1.1082E-14  1.8480E-14  1.6565E-13  3.3102E-13
 -8.9987E-14  6.6357E-13 -1.0914E-13  2.0806E-13  3.3102E-13  3.6541E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    3.896377   34.091083    0.849715    0.036651   -0.538571  2455804.016986
# Heliocentric elements and errors
Epoch:              2455804.5000  =  2011/08/31
Mean Anomaly:          275.61709 +/-     0.018
Argument of Peri:      130.87418 +/-     0.009
Long of Asc Node:       19.04579 +/-     0.000
Inclination:            15.66332 +/-     0.000
Eccentricity:         0.28667007 +/-    0.0001
Semi-Major Axis:     39.41750967 +/-    0.0026
Time of Perihelion: 2476992.2185 +/-       8.2
Perihelion:          28.11768936 +/-    0.0034
Aphelion:            50.71732998 +/-    0.0044
Period (y)              247.4811 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           34.74639971 +/-    0.0006
Ecliptic Y           22.49003719 +/-    0.0004
Ecliptic Z            2.78162407 +/-    0.0000
Ecliptic XDOT        -0.00195930 +/-    0.0000
Ecliptic YDOT         0.00159903 +/-    0.0000
Ecliptic ZDOT         0.00060310 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.48332006 +/-    0.0005
Geocenter to KBO     40.93257548 +/-    0.0007
# Hcoef:  7.01

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      
2019 10  26.394340 02 36 13.553  +22 24 26.40  22.2G 11UD411   G37  C~3chz      
2019 10  26.480580 02 36 13.091  +22 24 24.96        11UD411   G37  C~3chz      
2020 12  09.111060 02 37 37.951  +22 54 19.64  22.8G 11UD411   G37  C~4U7j      
2020 12  09.166000 02 37 37.754  +22 54 18.09        11UD411   G37  C~4U7j      

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     0.04       0.00     0.00
     2   0.0001      0.00    -0.03       0.00    -0.11
     3   0.0003      0.00     0.01       0.00     0.09
     4   0.0167      0.00     0.16       0.00     0.24
     5   0.1529      0.00     0.01       0.00    -0.12
     6   0.1530      0.00    -0.05       0.00    -0.06
     7   0.1555      0.00     0.08       0.00    -0.05
     8   0.1556      0.00     0.06       0.00    -0.07
     9   0.1558      0.00     0.06       0.00    -0.05
    10   0.1695      0.00     0.10       0.00    -0.01
    11   0.1695      0.00    -0.02       0.00    -0.06
    12   0.1696      0.00     0.00       0.00    -0.01
    13   0.1696      0.00    -0.00       0.00    -0.03
    14   0.1697      0.00    -0.04       0.00    -0.12
    15   0.2349      0.00     0.04       0.00     0.01
    16   0.2541      0.00     0.01       0.00    -0.03
    17   0.4074      0.00    -0.10       0.00    -0.01
    18   0.4100      0.00    -0.05       0.00    -0.02
    19   0.9800      0.00    -0.04       0.00    -0.15
    20   0.9857      0.00    -0.15       0.00    -0.04
    21   1.1332      0.00    -0.07       0.00     0.10
    22   1.1416      0.00    -0.10       0.00     0.03
    23   1.3766      0.00     0.10       0.00    -0.03
    24   1.4285      0.00     0.01       0.00     0.05
    25   1.4312      0.00     0.06       0.00    -0.03
    26   2.2667      0.00    -0.14       0.00     0.21
    27   2.2668      0.00    -0.06       0.00     0.10
    28   2.2668      0.00    -0.14       0.00     0.20
    29   8.1557      0.00    -0.12       0.00    -0.06
    30   8.1560      0.00     0.11       0.00     0.17
    31   9.2775      0.00    -0.32       0.00     0.05
    32   9.2776      0.00     0.43       0.00    -0.25

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        39.486    39.486    39.486
ecceobj         0.285     0.285     0.285
incobj         15.643    15.643    15.643
qmin           27.509    27.425    27.463
qmax           52.356    52.359    52.364
amean          39.455    39.456    39.455
amin           38.888    38.876    38.880
amax           40.158    40.138    40.127
emean           0.290     0.292     0.291
emin            0.277     0.277     0.278
emax            0.304     0.307     0.305
imean          15.491    15.393    15.461
imin           15.013    14.791    14.943
imax           16.011    15.907    15.907
excite_mean     0.395     0.395     0.395
fracstop        1.000     1.000     1.000
cjmean          2.874     2.873     2.873

libcent 0       180.0     179.5     179.7
libamp  0       132.6     132.3     132.2
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       177.4     173.6     173.2
kozaiamp        179.9     180.0     180.0