Orbit Fit and Astrometric record for 11UQ412

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: 11UQ412   
# Created Wed Oct 18 01:37:59 2017
# Orbit generated from Bernstein formalism
# Fitting   22 observations of   22
# Arc:   1.43y
# First observation: 2011/08/29
#  Last observation: 2013/02/02
Preliminary a, adot, b, bdot, g, gdot:
  -0.000105   0.034442  -0.000006  -0.010199   0.028301   0.000000
# Chi-squared of fit:     4.06 DOF:   38 RMS:  0.08
# Min/Max residuals:    -0.15    0.13
# Exact a, adot, b, bdot, g, gdot:
  1.850359E-05  3.418192E-02 -5.408910E-06 -1.017347E-02  2.826693E-02 -4.238188E-03
# Covariance matrix:
  3.3257E-13  2.3768E-13  2.7602E-14 -2.2312E-13  4.0300E-13  1.6090E-11
  2.3768E-13  1.1705E-12  7.6886E-14 -6.0732E-13  8.6480E-13  4.3672E-11
  2.7602E-14  7.6886E-14  1.4614E-13 -1.8866E-13  6.7805E-14  3.7981E-12
 -2.2312E-13 -6.0732E-13 -1.8866E-13  6.6606E-13 -5.4194E-13 -2.9798E-11
  4.0300E-13  8.6480E-13  6.7805E-14 -5.4194E-13  8.7796E-13  3.9027E-11
  1.6090E-11  4.3672E-11  3.7981E-12 -2.9798E-11  3.9027E-11  2.1409E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.174179   34.160361    0.859434    0.019876   -0.524321  2455803.033246
# Heliocentric elements and errors
Epoch:              2455800.5000  =  2011/08/27
Mean Anomaly:          352.45352 +/-     0.058
Argument of Peri:      197.24138 +/-     0.202
Long of Asc Node:      219.95458 +/-     0.000
Inclination:            16.68163 +/-     0.001
Eccentricity:         0.48947763 +/-    0.0007
Semi-Major Axis:     68.23112640 +/-    0.0660
Time of Perihelion: 2460115.8339 +/-      32.5
Perihelion:          34.83351626 +/-    0.0611
Aphelion:           101.62873653 +/-    0.1108
Period (y)              563.6143 +/-      0.82
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           30.17242764 +/-    0.0010
Ecliptic Y           19.43501173 +/-    0.0006
Ecliptic Z            1.34194579 +/-    0.0000
Ecliptic XDOT        -0.00217068 +/-    0.0000
Ecliptic YDOT         0.00253561 +/-    0.0000
Ecliptic ZDOT        -0.00100018 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.91512062 +/-    0.0009
Geocenter to KBO     35.37703464 +/-    0.0012
# Hcoef:  7.73

The following table shows the complete astrometric record for 11UQ412. 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 (11UQ412) followed by the observatory code and reference code for the source of the astrometry.

2011 08  29.53248  02 04 35.124  +14 57 05.64  23.2r 11UQ412   568  C~1CKy      
2011 08  29.57665  02 04 35.014  +14 57 04.97  23.1r 11UQ412   568  C~1CKy      
2011 08  29.62382  02 04 34.916  +14 57 04.30  23.0r 11UQ412   568  C~1CKy      
2011 09  05.56255  02 04 17.858  +14 55 14.93  23.1r 11UQ412   568  C~1CKy      
2011 10  24.44181  02 00 46.023  +14 32 57.91  23.0r 11UQ412   568  C~1CKy      
2011 10  24.48455  02 00 45.792  +14 32 56.48  23.1r 11UQ412   568  C~1CKy      
2011 10  24.52730  02 00 45.567  +14 32 55.02  23.0r 11UQ412   568  C~1CKy      
2011 10  30.56385  02 00 14.122  +14 29 29.77  23.1r 11UQ412   568  C~1CKy      
2011 10  31.54671  02 00 09.033  +14 28 56.19  23.1r 11UQ412   568  C~1CKy      
2011 11  24.30055  01 58 13.970  +14 15 45.77  23.0r 11UQ412   568  C~1CKy      
2011 11  24.30481  01 58 13.953  +14 15 45.62  23.1r 11UQ412   568  C~1CKy      
2011 11  30.34681  01 57 48.977  +14 12 41.51  23.0r 11UQ412   568  C~1CKy      
2012 01  25.28725  01 56 35.422  +13 57 24.06  23.4r 11UQ412   568  C~1CKy      
2012 01  26.27207  01 56 37.134  +13 57 23.89  23.3r 11UQ412   568  C~1CKy      
2012 08  23.53769  02 13 13.939  +15 04 49.95  23.3r 11UQ412   568  C~1CKy      
2012 08  24.57339  02 13 12.413  +15 04 38.63  23.2r 11UQ412   568  C~1CKy      
2012 10  17.40813  02 09 53.948  +14 43 36.05  22.9r 11UQ412   568  C~1CKy      
2012 10  17.42550  02 09 53.859  +14 43 35.48  22.9r 11UQ412   568  C~1CKy      
2012 10  20.50496  02 09 37.907  +14 41 55.04  23.0r 11UQ412   568  C~1CKy      
2013 01  04.33671  02 04 47.564  +14 07 07.56  23.4r 11UQ412   568  C~1CKy      
2013 01  14.32244  02 04 44.938  +14 05 27.69  23.6r 11UQ412   568  C~1CKy      
2013 02  02.25552  02 05 10.838  +14 05 01.30  23.2r 11UQ412   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     0.13       0.00    -0.06
  2   0.0001     -1.73    -0.05      -0.09    -0.06
  3   0.0003     -3.29     0.05      -0.23    -0.10
  4   0.0192   -272.99     0.02     -18.79     0.03
  5   0.1531  -3618.52    -0.04    -221.26    -0.02
  6   0.1532  -3622.16    -0.09    -221.45     0.02
  7   0.1533  -3625.73    -0.07    -221.69     0.00
  8   0.1698  -4125.29    -0.10    -256.85     0.12
  9   0.1725  -4206.28    -0.00    -262.85     0.09
 10   0.2376  -6049.63     0.10    -425.51     0.09
 11   0.2376  -6049.91     0.11    -425.57     0.06
 12   0.2541  -6454.77    -0.12    -472.07     0.02
 13   0.4073  -7779.06     0.06    -959.77    -0.15
 14   0.4100  -7755.73     0.04    -968.62    -0.12
 15   0.9856   7238.49     0.00   -2089.83     0.01
 16   0.9885   7213.85    -0.07   -2093.18     0.08
 17   1.1359   4078.13     0.02   -2324.36     0.09
 18   1.1359   4076.73     0.05   -2324.46     0.07
 19   1.1443   3824.91     0.03   -2341.48     0.02
 20   1.3520   -851.30    -0.13   -2880.57    -0.06
 21   1.3793   -921.24     0.06   -2961.48     0.01
 22   1.4311   -575.85     0.04   -3114.55    -0.14

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.

11UQ412    quality flag:2

Type:       SCATNEAR  SCATNEAR10:3EEEEEE

axisobj        68.481    68.629    68.338
ecceobj         0.491     0.493     0.489
incobj         16.669    16.669    16.669
qmin           33.619    32.591    34.288
qmax          103.335   104.124   101.774
amean          67.291    65.631    67.187
amin           66.108    62.772    66.277
amax           68.784    68.807    68.432
emean           0.481     0.483     0.468
emin            0.464     0.450     0.452
emax            0.502     0.513     0.489
imean          17.403    16.073    18.687
imin           16.237    14.646    17.278
imax           18.393    17.501    19.539
excite_mean     0.567     0.556     0.567
fracstop        1.000     1.000     1.000
cjmean          2.948     2.943     2.948

libcent 0      -180.0    -180.0     179.0
libamp  0      -180.0    -180.0      77.1
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       201.1     172.2     259.5
kozaiamp        180.0     180.0      60.2