Orbit Fit and Astrometric record for 11UB411

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: 11UB411   
# Created Tue Nov 30 02:11:18 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     27 observations of     27
# Arc:   8.16y
# First observation: 2011/08/30
#  Last observation: 2019/10/26
# Chi-squared of fit:     9.01 DOF:     48 RMS:  0.10
# Min/Max residuals:    -0.23    0.25
# Exact a, adot, b, bdot, g, gdot:
  1.557354E-05  2.616489E-02  3.298250E-06  6.616505E-03  2.634492E-02  1.502590E-03
# Covariance matrix:
  2.1794E-13 -1.1311E-13  1.1802E-14 -2.8692E-14  1.3897E-13 -5.0910E-13
 -1.1311E-13  1.8327E-13 -2.2688E-14  4.9065E-14 -1.8261E-14  8.8955E-13
  1.1802E-14 -2.2688E-14  7.4215E-14 -2.0964E-14  6.0019E-16 -1.1797E-13
 -2.8692E-14  4.9065E-14 -2.0964E-14  2.6188E-14 -5.8256E-15  2.5500E-13
  1.3897E-13 -1.8261E-14  6.0019E-16 -5.8256E-15  1.8546E-13 -8.9767E-14
 -5.0910E-13  8.8955E-13 -1.1797E-13  2.5500E-13 -8.9767E-14  4.6236E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    4.387323   31.090503    0.820582    0.044578   -0.581460  2455803.988876
# Heliocentric elements and errors
Epoch:              2455804.5000  =  2011/08/31
Mean Anomaly:           44.79497 +/-     0.046
Argument of Peri:      328.28017 +/-     0.053
Long of Asc Node:       13.33909 +/-     0.000
Inclination:            14.87118 +/-     0.000
Eccentricity:         0.04743208 +/-    0.0001
Semi-Major Axis:     39.84617234 +/-    0.0034
Time of Perihelion: 2444372.9496 +/-      11.9
Perihelion:          37.95618545 +/-    0.0050
Aphelion:            41.73615922 +/-    0.0052
Period (y)              251.5290 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           33.33669527 +/-    0.0005
Ecliptic Y           19.14338317 +/-    0.0003
Ecliptic Z            2.90387595 +/-    0.0000
Ecliptic XDOT        -0.00131901 +/-    0.0000
Ecliptic YDOT         0.00238718 +/-    0.0000
Ecliptic ZDOT         0.00069760 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.55172145 +/-    0.0005
Geocenter to KBO     37.95797729 +/-    0.0006
# Hcoef:  8.01

The following table shows the complete astrometric record for 11UB411. 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 (11UB411) followed by the observatory code and reference code for the source of the astrometry.

2011 08  30.48811  01 49 28.024  +15 57 41.69        11UB411   568  C~1C6M      
2011 08  30.58738  01 49 27.724  +15 57 41.16        11UB411   568  C~1C6M      
2011 09  05.58883  01 49 09.234  +15 56 59.40        11UB411   568  C~1C6M      
2011 10  25.33377  01 45 18.662  +15 41 36.99        11UB411   568  C~1C6M      
2011 10  25.38258  01 45 18.394  +15 41 35.80        11UB411   568  C~1C6M      
2011 10  25.43212  01 45 18.132  +15 41 34.54        11UB411   568  C~1C6M      
2011 10  26.28262  01 45 13.685  +15 41 12.98  23.6r 11UB411   568  C~1C6M      
2011 10  26.33520  01 45 13.397  +15 41 11.79  23.8r 11UB411   568  C~1C6M      
2011 10  26.37840  01 45 13.162  +15 41 10.68  23.7r 11UB411   568  C~1C6M      
2011 10  31.28562  01 44 47.562  +15 39 04.86  23.8r 11UB411   568  C~1C6M      
2011 10  31.38837  01 44 47.012  +15 39 02.18        11UB411   568  C~1C6M      
2011 10  31.41441  01 44 46.869  +15 39 01.43        11UB411   568  C~1C6M      
2011 10  31.44399  01 44 46.717  +15 39 00.78        11UB411   568  C~1C6N      
2011 11  24.25366  01 42 52.852  +15 28 58.83  23.9r 11UB411   568  C~1C6N      
2012 01  26.28714  01 41 19.192  +15 17 22.25  24.1r 11UB411   568  C~1C6N      
2012 01  27.22110  01 41 20.801  +15 17 27.77  23.8r 11UB411   568  C~1C6N      
2012 08  23.58144  01 55 01.339  +16 50 49.53  23.8r 11UB411   568  C~1C6N      
2012 08  24.40933  01 54 59.524  +16 50 48.88  23.9r 11UB411   568  C~1C6N      
2012 08  24.45714  01 54 59.395  +16 50 48.72  23.9r 11UB411   568  C~1C6N      
2012 08  27.55400  01 54 51.979  +16 50 42.79  24.1r 11UB411   568  C~1C6N      
2012 10  21.38781  01 50 55.958  +16 36 48.48  23.7r 11UB411   568  C~1C6N      
2013 02  03.29696  01 46 46.298  +16 11 04.44  23.8r 11UB411   568  C~1C6N      
2013 09  30.44854  01 58 06.86   +17 37 24.4         11UB411   568  C~1CKy      
2013 09  30.45882  01 58 06.82   +17 37 24.2         11UB411   568  C~1CKy      
2013 09  30.46910  01 58 06.76   +17 37 24.1         11UB411   568  C~1CKy      
2019 10  26.372690 02 29 00.658  +22 32 33.26  23.5G 11UB411   G37  C~3chz      
2019 10  26.449710 02 29 00.229  +22 32 31.69        11UB411   G37  C~3chz      

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    -0.02       0.00     0.14
     2   0.0003      0.00    -0.17       0.00     0.14
     3   0.0167      0.00    -0.23       0.00     0.13
     4   0.1529      0.00     0.05       0.00    -0.15
     5   0.1530      0.00    -0.06       0.00    -0.11
     6   0.1532      0.00    -0.01       0.00    -0.11
     7   0.1555      0.00     0.13       0.00    -0.07
     8   0.1556      0.00     0.02       0.00     0.06
     9   0.1558      0.00    -0.05       0.00     0.05
    10   0.1692      0.00     0.25       0.00     0.05
    11   0.1695      0.00     0.13       0.00     0.01
    12   0.1695      0.00     0.04       0.00    -0.07
    13   0.1696      0.00     0.10       0.00     0.05
    14   0.2348      0.00    -0.13       0.00    -0.02
    15   0.4074      0.00    -0.09       0.00    -0.19
    16   0.4099      0.00    -0.13       0.00    -0.18
    17   0.9831      0.00    -0.03       0.00     0.05
    18   0.9854      0.00     0.10       0.00     0.13
    19   0.9855      0.00    -0.18       0.00     0.01
    20   0.9940      0.00     0.07       0.00     0.03
    21   1.1441      0.00     0.08       0.00     0.03
    22   1.4314      0.00     0.11       0.00     0.07
    23   2.0861      0.00    -0.09       0.00    -0.05
    24   2.0862      0.00     0.06       0.00    -0.07
    25   2.0862      0.00    -0.09       0.00     0.01
    26   8.1557      0.00     0.02       0.00     0.01
    27   8.1560      0.00    -0.00       0.00     0.00

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.

11UB411    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        39.919    39.919    39.919
ecceobj         0.049     0.049     0.049
incobj         14.858    14.858    14.858
qmin           35.998    33.667    31.177
qmax           43.408    45.837    48.716
amean          39.587    39.417    39.471
amin           39.037    38.929    38.832
amax           39.978    40.003    40.143
emean           0.038     0.049     0.154
emin            0.000     0.000     0.019
emax            0.089     0.150     0.215
imean          11.252    10.957     8.177
imin            7.223     7.345     2.940
imax           15.237    15.236    15.237
excite_mean     0.199     0.197     0.226
fracstop        1.000     1.000     1.000
cjmean          3.006     3.002     2.990

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       178.7     167.1     215.8
kozaiamp        180.0     180.0     180.0