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 Oct 24 01:37:57 2017
# Orbit generated from Bernstein formalism
# Fitting   25 observations of   25
# Arc:   2.09y
# First observation: 2011/08/30
#  Last observation: 2013/09/30
Preliminary a, adot, b, bdot, g, gdot:
  -0.000262   0.026387   0.000002   0.006635   0.026159   0.000000
# Chi-squared of fit:     8.21 DOF:   44 RMS:  0.10
# Min/Max residuals:    -0.17    0.26
# Exact a, adot, b, bdot, g, gdot:
  1.556268E-05  2.616522E-02  3.276986E-06  6.616610E-03  2.634509E-02  1.511787E-03
# Covariance matrix:
  2.2684E-13 -7.6098E-14 -4.2171E-15  1.0252E-14  1.6341E-13  7.0343E-13
 -7.6098E-14  6.6401E-13 -4.1630E-14  1.9303E-13  2.2430E-13  1.4072E-11
 -4.2171E-15 -4.1630E-14  1.1006E-13 -9.3785E-14 -2.2857E-14 -1.1136E-12
  1.0252E-14  1.9303E-13 -9.3785E-14  1.9778E-13  9.3412E-14  5.1140E-12
  1.6341E-13  2.2430E-13 -2.2857E-14  9.3412E-14  3.1336E-13  6.7503E-12
  7.0343E-13  1.4072E-11 -1.1136E-12  5.1140E-12  6.7503E-12  3.7258E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    4.387323   31.090503    0.820582    0.044578   -0.581461  2455803.988876
# Heliocentric elements and errors
Epoch:              2455800.5000  =  2011/08/27
Mean Anomaly:           44.99754 +/-     0.461
Argument of Peri:      328.02288 +/-     0.537
Long of Asc Node:       13.33904 +/-     0.001
Inclination:            14.87115 +/-     0.001
Eccentricity:         0.04771001 +/-    0.0006
Semi-Major Axis:     39.84781470 +/-    0.0048
Time of Perihelion: 2444316.5448 +/-     117.6
Perihelion:          37.94667493 +/-    0.0239
Aphelion:            41.74895447 +/-    0.0240
Period (y)              251.5446 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           33.33649005 +/-    0.0007
Ecliptic Y           19.14325893 +/-    0.0004
Ecliptic Z            2.90385674 +/-    0.0001
Ecliptic XDOT        -0.00131821 +/-    0.0000
Ecliptic YDOT         0.00238769 +/-    0.0000
Ecliptic ZDOT         0.00069768 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.55150212 +/-    0.0006
Geocenter to KBO     37.95774352 +/-    0.0008
# Hcoef:  8.11

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      

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     0.14
  2   0.0003     -4.23    -0.10       1.04     0.19
  3   0.0167   -268.39    -0.16      56.52     0.20
  4   0.1529  -3706.44     0.00     382.09    -0.15
  5   0.1530  -3710.48    -0.08     382.37    -0.08
  6   0.1532  -3714.46    -0.04     382.55    -0.10
  7   0.1555  -3782.16     0.11     385.48    -0.11
  8   0.1556  -3786.47     0.05     385.86     0.05
  9   0.1558  -3790.04    -0.01     386.05     0.06
 10   0.1692  -4180.44     0.26     401.46    -0.04
 11   0.1695  -4188.82     0.13     401.82    -0.04
 12   0.1695  -4191.01     0.03     401.86    -0.08
 13   0.1696  -4193.30     0.13     402.04     0.01
 14   0.2348  -5946.06    -0.10     433.83     0.02
 15   0.4074  -7462.58    -0.15     275.46    -0.15
 16   0.4099  -7438.85    -0.17     272.14    -0.12
 17   0.9831   5611.54    -0.03    1301.16     0.05
 18   0.9854   5586.87     0.12    1309.62     0.09
 19   0.9855   5585.08    -0.17    1310.11     0.06
 20   0.9940   5483.13     0.05    1341.60     0.00
 21   1.1441   2013.96     0.05    1747.89    -0.00
 22   1.4314  -1892.96     0.06    1579.72     0.03
 23   2.0861   9077.23    -0.06    3005.75    -0.00
 24   2.0862   9076.62     0.07    3005.76    -0.07
 25   2.0862   9075.78    -0.04    3005.96     0.05

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        39.920    39.936    39.905
ecceobj         0.050     0.051     0.048
incobj         14.858    14.858    14.858
qmin           34.306    35.908    34.413
qmax           45.344    43.512    45.094
amean          39.488    39.576    39.486
amin           38.941    38.967    38.937
amax           40.008    39.987    40.006
emean           0.082     0.053     0.074
emin            0.019     0.016     0.001
emax            0.135     0.090     0.130
imean          11.023    10.322    11.028
imin            7.776     4.982     8.025
imax           15.243    15.252    15.229
excite_mean     0.211     0.188     0.210
fracstop        1.000     1.000     1.000
cjmean          3.000     3.007     3.002

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       191.7     179.3     186.8
kozaiamp        180.0     180.0     180.0